
Warning signs when choosing a renovation contractor
A single sign condemns no one; two or three together at the visit, in the quote or in payment terms are a reason to stop and ask.
View detailsBCN YARD
Practical guides to house construction, turnkey renovation and interior design. Decisions, questions and examples for your project in Barcelona and the wider province.

A single sign condemns no one; two or three together at the visit, in the quote or in payment terms are a reason to stop and ask.
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A verbal quote fixes neither scope, materials, timing nor payment terms, and in a dispute nothing can be proved. Where expectations usually clash and how to get it onto paper.
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Cash with no invoice leaves you with no proof of payment, no tax document and no footing for a claim. Pay by transfer to the company account, in contract stages.
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A few minutes with BORME, a nota simple and the insolvency register confirm that the company exists, who runs it and whether it is insolvent.
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Without liability insurance, damage to neighbours or shared areas during the works can end up on you. How to check the policy before signing.
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A contractor’s address is not decoration: it is where claims reach them if a defect appears after the works. How to check it in half an hour.
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Demanding a decision today is almost always a sales tactic. Real urgency comes with documents, and deciding takes as long as comparing does.
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If a quote is far cheaper for the same scope, something is almost always missing. Check it line by line against your most detailed quote.
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An increase is legitimate if you change the scope, a hidden defect appears, measured quantities differ under a remeasurement contract or you pick a pricier material. Anything else deserves questions.
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A swap is not caught by eye but by checking references against the approved specification before installation. Where to look and what to do about a mismatch.
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Document the state, stop paying, demand in writing with a deadline, and get the work valued before another firm steps in.
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A review is worth something when you can check who wrote it and which job it describes. How to read Google reviews, verify project photos and what to ask a former client.
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A serious renovation contract pins down eight things: parties, scope, price, changes, timeline, payments, permits and liability, and warranty with dispute resolution.
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Document first, make a written demand, then choose a route; what you do in the first 48 hours often decides the outcome.
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The final checklist: what to check about a contractor at each step, from the first call to signing the contract and the first payments.
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Renovating a flat in Barcelona with BCN YARD costs from €1,000/m² excluding VAT: a 100 m² flat at Basic starts at €100,000. What pushes the price up and how to get an exact quote.
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Basic from 1,000 EUR/m², Standard from 2,000 and Luxury from 3,000, excluding VAT. The exact price comes in the estimate after a site visit.
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A kitchen quote is seven or eight independent items, from electrics to worktop. That is how offers should be compared, not by the bottom line.
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In a full renovation the bathroom sits within the overall price from €1,000/m² excluding VAT, yet it packs in more items than any other room. We go through them in site order.
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On our resale-home renovations VAT is usually 21%. Building a new home is taxed at 10%. We explain why, and when a renovation can drop to 10%.
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What most often sits outside a renovation quote: permits, logistics, hidden services, utility connections and everything that is not building work.
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A fixed price gives predictability when the design is fully defined; measurement is fairer where quantities are unknown. In practice a mix of both, with agreed unit rates, usually works best.
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A reasonable deposit covers the contractor’s specific start-up orders. Around 10–30% of the quote is common; 100% upfront is a reason to stop.
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Paying against verifiable milestones and progress valuations, with a final retention, stops you paying ahead of the work.
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When the budget grows mid-renovation, first split the overrun by cause, then decide what to pay for, what to simplify and what to postpone.
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Save on what is easy to replace later and on late changes. Cutting corners on concealed services, waterproofing and substrates ends up costing the most.
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A partial renovation costs less in total but more per metre, and two partial jobs in a row almost always cost more than one full renovation.
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A renovation price is materials, labour and site organisation, in a different balance for each item. That decides where you can safely save.
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Renovations are funded with savings, a personal loan, a mortgage or public grants. How to work out the real amount, which documents the bank needs and where people usually go wrong.
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A first renovation figure takes a minute: floor area times the tier rate. Which area to use, how to pick a tier, and why the final quote then differs.
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The procedure depends on whether the works touch structure, facade, layout or common elements; the architect classifies it and the council confirms.
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The comunicat immediat is the simplest route for a finishes-only renovation in Barcelona: you file it and start work. Where its limit lies and how not to cross it mid-job.
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The comunicat diferit sits between the immediate notice and a full licence: technical documents are filed first, and work starts only once the review period ends.
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Major works apply when structure, volume or the number of dwellings change, and they reshape the team, the budget and the order of works.
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Works become major when they affect the structure, façade, floor area, number of dwellings or use. How to check your case before getting a quote.
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Unpermitted works do not go away: they surface through a neighbour complaint, a sale or an insurance claim, and the owner is liable. The risks and what to do.
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The ITE shows the state of the building's shared elements and the comunidad's plans. Read it before buying and before setting the programme.
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The cédula is required to sell, let and connect utilities. A renovation that changes the layout is checked against it before the design is approved.
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Opening a business in refurbished premises needs a works permit and legalisation of the activity, and a clinic usually needs health authorisation as well. The activity regime sets the fit-out requirements, so check it before leasing.
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An interior renovation usually needs only notice; anything touching the facade, stacks or load-bearing walls needs a meeting resolution. Where the line is and how long it takes.
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With an immediate notice work starts almost at once; major works can take months. Build the schedule on the actual procedure, not on a generic figure.
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Who signs depends on the type of work: architect, arquitecto técnico, engineer or licensed installer. What each one answers for and how to check they are entitled to sign.
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The council asks for three groups: who and where, what is being done (description, drawings, budget, project) and supporting papers (community, waste, fees). It publishes the exact list.
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In a listed building, what changes is what you can touch: façade, windows and protected elements need more design work and approval.
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What to ask your contractor about permits at the first meeting, before signing and before starting, and which answers should set off alarms.
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A Barcelona renovation passes through five levels: City Council, housing offices, Generalitat, state registers and professional bodies. Here is who does what and which guide to read next.
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Most offices and shops in Barcelona need an activity notice rather than a licence. You can file it yourself on the Oficina Virtual, though almost always with a technician's certificate.
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The Catastro and the Land Registry are separate records. The Catastro must be told within two months of completion unless someone does it for you; the Land Registry records an extension through a notarial deed.
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A lift in an old building needs three things: a simple-majority owners' vote, a City Council permit (works notice or licence depending on whether it goes inside or outside) and a commissioning declaration to the Generalitat.
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Barcelona owners' associations have two Consorci de l'Habitatge lines: energy refurbishment of the building and accessibility, lifts included. Requirements, amounts, documents and what is open in 2026.
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Barcelona's Next Generation grant for individual flats closed on 30 June 2026. Two realistic routes remain: renovating for the Borsa d'Habitatge de Lloguer and the IRPF energy-efficiency deduction.
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The owners' association or the building owner orders the ITE, a technician inspects, and the Agència de l'Habitatge de Catalunya issues the certificat d'aptitud. Deadlines, documents and filing.
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Owners do not remove asbestos themselves: only a RERA-registered company with an approved work plan may. Your part is finding it, choosing the firm, getting the works permit and claiming the incentives.
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For an ordinary domestic gas installation nothing is filed with the Generalitat. The installer and the distributor issue the papers, and a mandatory inspection comes round every five years.
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Only a registered electrical installation company can issue and sign the certificate. Rewiring inside a flat is not registered in Catalonia; a new installation is, through an online responsible declaration.
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A technician prepares the energy certificate, and it only counts once it is entered in the ICAEN registry. You order it, pay the fee and get the label for your listings.
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You need a cèdula d'habitabilitat to sell, rent out or connect utilities. A technician signs the certificate, but you can file the application yourself.
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Works done without a permit are regularised by applying now for the missing permit, with a technician documenting what was built. Here is when that works, what the six-year limit means and how to register the result.
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In Barcelona a shop sign counts as type II minor works and must fit the urban landscape bylaw. Here are the sizes, allowed positions and how to file it yourself.
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A pool is not minor work: in Barcelona and towns such as Castelldefels it needs a major works licence with a technical project. Here is the full route, from project to Catastro.
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A self-consumption solar system goes through three desks: the City Council, the Generalitat and the tax office. Here is what each one needs, who files what and which tax savings you can claim.
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New windows change the facade, so a simple notice is rarely enough. Here is which procedure applies depending on the building's protection and how to file it yourself.
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In Barcelona you cannot simply bolt an outdoor unit to the street facade: the landscape bylaw prefers the roof and requires an integration project. Here is what is allowed and how to file it.
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Barcelona keeps private building permit files in different archives depending on the year. Many are already digitised and open straight from the PIU; the rest can be requested online or viewed by appointment.
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In Barcelona you can check a building's protection level and the plot's zoning for free on the Portal d'Informació Urbanística, and order an urban planning report or certificate online when you need an official document.
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In Catalonia the waste deposit for licensed works is no longer paid to the Ajuntament but to an authorised waste manager, who issues the document you attach to the application. For minor works the municipal ordinance decides.
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In Barcelona, scaffolding over the pavement is declared with the works permit, scaffolding on the roadway needs its own licence, and a lift or truck for a few days needs a work-vehicle parking permit. Here is which one to request and how.
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In Barcelona a rubble sack or skip goes on the street through an approved company, and responsibility is shared with whoever holds the works permit. Here is what to check and where fines usually come from.
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In Barcelona, ICIO is 4% of the material execution cost of the works and is paid together with the planning fee through a self-assessment. Here is when the payment slip arrives, how to pay it and what to do when the works finish.
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To file works procedures online in Barcelona you need idCAT Mòbil, Cl@ve, an electronic DNI or a digital certificate. With an NIE you can get all three, but each route asks for different documents and not all allow video identification.
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A major works licence is the permit Barcelona requires for new buildings, major refurbishment, changes of use or global structural work. An architect signs the project, but you are the licence holder and several steps depend on you.
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The comunicat diferit is the regime for type I minor works in Barcelona: you file the project and wait one month while the City Council reviews it. The technician writes the project; you handle the application, the owner's declarations and the payment.
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A comunicat immediat lets you start type II minor works in Barcelona right after filing and paying. You can run the procedure yourself, but the project and the technical suitability report come from a technician.
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An extension is decided by the plot's planning parameters and the house's structure, not by how much free land you see. What to check before design and which mistakes cannot be undone.
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A firm house budget comes with the construction design; before that you get a range driven mostly by the plot and a handful of key decisions.
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Earthworks bring the plot to the design levels and prepare the base for the foundations. The sequence, ground surprises and what to check as an owner.
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The engineer sets the foundation type from the soil data; the owner's job is to plan service entries early and keep records of what gets buried.
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The frame goes up in a formwork, reinforcement and pour cycle on every floor; for the owner, the check before each pour is what matters most.
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Services go in after the structure and partitions and before plaster, screed and tiles: gravity drainage first, bulky ducts next, flexible cabling last. Before closing, a walk-through with the owner.
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A roof does not leak in the middle but at junctions and wherever water ponds. What to check on each layer while it is still visible.
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A house's thermal performance is set by roof, facade, ground slab, thermal bridges and airtightness, all decided before the structure goes up.
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Windows are chosen on five things at once: frame, glass, opening type, resistance to the environment and installation. Compare the finished window at its real size, not the profile in a brochure.
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The options: render (often on ETICS), stone, ceramic on a rainscreen, timber and panels. The site’s climate, the upkeep you accept and the insulation decide.
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Seven stages of building a pool and what to check at each; the shell goes up fast, but the risks sit in waterproofing and services.
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Solar for a new house is sized from future consumption and built into the design together with the roof, cable routes and the inverter location.
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Garden and paving come last, but levels, drainage and buried services are decided during the build. What cannot wait, and the order to do it all in.
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Before the walls close, lay the infrastructure: cables, conduit, power and a cabinet space. Devices and scenes can be chosen after you move in.
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A quiet house comes from structural mass, floating floors, windows and where the plant goes, not from the finishes at the end.
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The certificado final de obra is signed by the site’s technical directors; the cédula de habitabilidad is issued by the authorities on the back of it. Without both, utilities, registration and sale get difficult.
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In year one a house dries out, settles and goes through every season for the first time. What to check, when, and how to log it so the warranty works.
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A plot is bought on its paperwork, not the view from the street: what house you may build, how it connects to utilities and what it costs to prepare the land.
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A topographic survey describes the surface, a geotechnical study the ground beneath. A house needs both, and the survey comes first.
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A room brief lists spaces with areas, relationships and priorities, and is written before any sketch so the layout fits the way you live.
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Near Barcelona, main rooms and large glazing work best facing south under an overhang, while the west is protected with vertical and movable screens. The result is checked against real scenarios on the actual plot.
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Choosing between one and two floors starts with the plot parameters and an identical room brief. Where the real differences lie in daily life and in cost.
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Every interior decision has a point in construction after which changing it means redoing work; the decision schedule is set alongside the build schedule.
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During the structural stage, openings, service penetrations and supports for future systems get cast in. The client's job is to check their own decisions in time and leave structural judgement to the site direction team.
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Before colour and texture come the wall build-up, window positions, junctions, everything else that will sit on the facade, and municipal rules.
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A roof terrace is designed from its uses; thresholds, drains, balustrades and services are resolved before any finish is chosen.
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A checklist for every window in a new house: how it opens, who takes the final measurement, which glass and shading, how junctions are solved and what goes in the order.
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Site logistics are settled before the first lorry arrives: machine route, unloading area, storage, waste and temporary utilities. Otherwise the programme breaks in the first month.
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House procurement is counted back from installation, and the key date for the client is the approval deadline, not the delivery date.
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The house, pool and garden share levels, services and machine access, so they are designed together rather than adding the pool afterwards.
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A house’s equipment needs more room than the catalogue suggests: service clearances, a way in to replace it, drainage, ventilation and noise control. Plant rooms are designed with the house, not squeezed into leftover corners.
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A useful archive is concealed work photographed before it is closed, with a location reference and date. What to shoot, how to store it and how to use it later.
View detailsEvery decision in building a house has a deadline: layout before design, openings before the pour, sockets before the walls close.
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A full flat renovation in Barcelona usually takes 3 to 6 months on site, plus preparation. We walk through the phases, what causes delays and how to shorten the schedule.
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In a Barcelona flat, the kitchen hinges on old downpipes, electrical capacity and extractor routing. What to check before design and in what order to decide.
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What gets rebuilt in a Barcelona bathroom, what turns up when old walls are opened and how the price is set.
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A full flat renovation in Barcelona starts at €1,000/m² excluding IVA. What turns up behind the walls of older buildings, the order of works and where money is usually lost.
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Building refurbishment covers the shared elements: facade, roof, structure and services. The community of owners commissions it, usually starting from the ITE report.
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How to renovate an office in Barcelona without closing: phasing, noisy-work hours, services with spare capacity and reference prices.
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A Barcelona hotel can be renovated without closing: in blocks of rooms, with a pilot room and a schedule tied to bookings.
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A healthcare space is designed around a specific activity and its licensing before any works start. Sequence, building services and a real 250 m² case in the Eixample.
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Rule out companies without verifiable details or a contract first, then judge the site visit and estimate, and only then compare prices.
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A full renovation in the Eixample starts with the floor structure, walls and stacks, not the finishes. From €1,000/m² excluding VAT; the exact price follows a survey.
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A full renovation in Castelldefels starts from €1,000/m² excluding VAT. How a flat differs from a house with a plot, what the sea changes and how to approach permits.
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The quote follows a site visit and measurements; before that there is a guide of €1,000 to €3,000/m² excluding VAT depending on tier. Here is how we go from enquiry to itemised quote.
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An existing house is renovated starting with a survey of structure, roof, damp and services, not with the design.
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A penthouse differs from a regular flat in its terrace, the roof overhead and the loads on the slab. The interior is priced like a flat; the terrace separately.
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Every detail about BCN YARD you can verify before meeting us: company, insurance, projects and terms of work, and how to check each one.
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A kitchen renovation follows a strict order: layout, services, specific appliances, cabinetry, finishes. Each step explained, plus the mistakes that cost the most.
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A bathroom is renovated in strict stages, and the costliest mistakes hide under the tiles: in the stack, the pipework and the waterproofing.
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Flooring, lighting and furniture on a balcony are usually your call; anything that changes the facade is not. Where the line sits and what to do first.
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Underfloor heating raises the floor and depends on the structure, the heat source and the finish, all of which are decided at design stage.
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If your renovation includes airtight windows, ventilation must be designed at the same time: once ceilings are closed there is nowhere to run ducts.
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In a full renovation it pays to run smart-home cabling from the start; in a partial one, wireless systems do the job. What to decide before the walls close.
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A universal-design bathroom is set up during the renovation: a level shower, blocking for grab bars, the right door and a thermostatic mixer. Most of it is invisible, and adding it later means new tiles.
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Bathroom damp almost always has one of three causes: weak extraction, water behind the tiles or a wrong floor fall. All three are dealt with before tiling.
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In a full renovation it is not realistic; in a partial one it can be, if there is a bathroom, water, power and a dust-sealed zone.
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It is worth keeping what is in good condition and can live with new services. How to assess the floors, cornicing, doors and windows of an older building, and why you compare complete solutions.
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Before strip-out, three things are recorded: what goes, what stays and the state of everything around it. A marked plan, a list and dated photos prevent disputes.
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Deliveries are planned around the route, storage space and who receives them; large items are ordered only after the route is measured.
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To keep a substitute from spoiling the interior, first define why the original was chosen, then compare samples, knock-on work and the full cost.
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A bespoke kitchen is designed around specific models, not categories. What to take from each manual, which clashes to check and how to freeze the design before manufacture.
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With one bathroom, plan around the time it is unusable: choose everything early, decide where to live and never cut curing times.
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Junctions between floors, walls and doors shape how a renovation looks more than the materials do. They are found on the plan and approved before buying.
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A sample is approved next to its neighbouring materials, under light close to the final one, and recorded in writing down to the reference and batch. The master sample stays on site until the end.
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A good renovation report answers four questions: what is done, what is next, what you need to decide, and where money and time stand. The structure, with an example.
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First the end of works and snagging, then fine cleaning, then deliveries and assembly, and the move last, with utilities already active.
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Different totals usually mean different scopes. How to bring the offers onto a common basis, where exclusions hide and what to ask about how the job will be run before choosing.
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Any change during the works is first assessed for cost, time and knock-on effects, then approved in writing, and only then carried out. When it is cheap, when it is expensive and how to keep one version.
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Prepare for handover in advance: the quote, drawings and approved changes, a room-by-room walk testing everything that opens or switches on, and a written snagging list.
View detailsPreparing a renovation starts with how you will live in the space, not a list of materials. What to gather and think through before the contractor's first visit.
View detailsPremises are bought for a specific activity: first check that it is allowed there and what the fit-out will require, and only then negotiate the price.
View detailsAn estimate shows every item with unit, quantity and price, VAT separately, plus exclusions, provisional quantities and how changes are priced.
View detailsFor a business, the biggest cost of a refurbishment is often the days of closure, not the quote. So the works are planned back from opening day, with an early decision on closing or phasing and a brief on how the business really runs.
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What makes a small kitchen comfortable is a short fridge-sink-hob route and storage up to the ceiling, not the amount of worktop.
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In a small bathroom space comes from the layout and what goes inside the walls: wall-hung fixtures, a level shower, a fixed glass panel, a pocket door and niches.
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A living-dining room works when zones, walkways and electrics are decided together with furniture to scale, before the works begin.
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A main bedroom works when the bed position, clearances, bedside lighting, climate and route to the bathroom are fixed before finishes. Curtains and furniture come later.
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A dressing room pays off when there are 4–5 m² to spare without shrinking the bedroom. If space must be taken, a 60 cm deep wardrobe holds nearly as much.
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Only the part of a loft with enough headroom, a floor that takes the load and heat that insulation can control can become a real room.
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A duplex staircase is planned first: step sizes, the slab opening and headroom fix its place on both floors, and the material is chosen afterwards.
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A washing machine and drying area fit on a terrace inside a closed, ventilated technical cabinet with water and drainage, with slats hiding the washing. Start with facade rules.
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An entrance stops collecting clutter once every item has a place of the right depth. Dimensions and the design sequence.
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An island needs clear space on all four sides and drainage and extraction in the middle of the room; a peninsula fits in fewer metres.
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A kitchen needs three layers of light: general, task lighting over the worktop, and ambient. They are planned with the cabinet drawings, before the wiring goes in.
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A fitted wardrobe is designed early and measured late: the wiring goes in before plastering, the final survey after the finishes.
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For a remote brief the studio needs how you live, a plan and photos with unverified dimensions flagged, the budget level and clear approval rules. An on-site survey is still needed.
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In a small living room you settle the main function and walkways first, then pick specific pieces by their real dimensions.
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Each diner needs about 60 cm of table edge, and at least 80 cm between table and wall. How to turn that into a dining zone, a table shape and a light position.
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A home workspace is designed around how you work: hours, calls, equipment. That sets its location, lighting, acoustics, sockets and storage.
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A bedroom needs daylight, evening privacy and darkness for sleep: usually two layers plus persianas, with the track recess planned before the ceiling.
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An entrance is designed around what you do in your first minutes home: belongings, circulation and services come before decoration.
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In a child’s room, the renovation fixes only what is hard to change: electrics, lighting, built-in storage carcasses, flooring and sound insulation. Furniture, colour and decor stay changeable.
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A laundry room works when every step has its place and the machines can be serviced and replaced. Dimensions, services and common mistakes.
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Room echo, airborne noise, impact noise and services noise are each solved differently; decoration only fixes the first.
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Upkeep depends as much on how you live as on the material itself. We go zone by zone: worktop, parquet, microcement, grout, taps and walls, with Barcelona's hard water and sea air in mind.
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Plan the collection before first fix: which walls stay clear of switches and sockets, where to add backing for heavy pieces, what lighting, and where art must not hang.
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An adaptable home rests on a few hard-to-change decisions made early; furniture and finishes can be adjusted later without building work.
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Before work starts, decide the materials that the first-fix work depends on: floor build-up, concealed sanitaryware, kitchen appliances and doors. The rest can wait.
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A good layout starts from a brief that describes your life, not a request to make it feel spacious. What to tell the designer and how to compare options.
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Plan lighting from what happens in each room: scenes, circuits and controls before first fix, with the fittings chosen last.
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An open kitchen suits moderate cooks willing to invest in extraction; an enclosed one suits heavy fryers who want a quiet living room.
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Bathroom tiles are chosen last: first decide who uses the room and how, where the fittings go, which systems are built into the walls, where light is needed and how the materials will be cared for.
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Bespoke furniture is designed from the inside out: first the items and fittings, then the carcass, and only then the doors. What to check before production.
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Flooring is chosen by how each area is used, the substrate underneath, the transitions and the upkeep; the photo comes last.
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A calm interior gains character from a permanent base, a single recurring accent and contrasting textures, not from adding more colours.
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