Renovation and construction in Castelldefels

What gets renovated and built here

Castelldefels is really several towns in one. On the slopes of Montmar and Bellamar you find detached houses with sea views, terraces and pools. Near the beach it is mostly apartments and townhouses, many built as summer homes and now being adapted for year-round living. The centre has apartment blocks from several decades.

Typical projects: a complete rebuild of a newly bought house, a new layout that merges rooms and opens the living area onto the terrace, a new kitchen and bathrooms, or refreshing a seafront flat before letting it or moving in. We also build new houses on the client's own plot, from design through to handover.

Houses: plot, pool, facade and roof

A house on a slope has its own weak points. Retaining walls and drainage decide whether storm water leaves the plot or ends up in the basement. Pools eventually need new waterproofing, lining and filtration equipment. Facades crack and fade in the sun, and flat roof terraces start leaking wherever the waterproofing has not been renewed for years.

We look at the whole house, not only the rooms you want to change. If it makes sense to insulate the facade, replace windows or add solar panels at the same time, we price those as separate line items so the decision stays yours.

Seafront flats: damp and salt

Sea air eats metal: railings, fixings, aluminium frames, the outdoor units of air conditioners. So near the sea we pick materials made for that climate, such as grade 316 stainless steel, properly coated profiles, and paints and grouts designed for damp conditions.

The other issue is moisture indoors. When a flat has been shut up for a long time, mould often appears in bathrooms and on external walls. We deal with the cause, meaning ventilation and waterproofing of terraces and junctions, rather than painting over the stain.

Permits

Which permit you need is decided by Castelldefels town hall, based on the scope of work. Replacing a kitchen in a flat is not the same as extending a house, adding a pool or changing the facade, and each case comes with its own requirements. In apartments, the building's community rules also apply.

We check this before quoting, so the timeline and the cost of the paperwork are in the quote from the start. If the project needs an architect, we bring one in and handle the documents together.

What it costs

Guide prices, excluding VAT: Basic from €1,000/m², Standard from €2,000/m², Luxury from €3,000/m². For a house, work outside the rooms has a big effect on the total: the plot, the pool, the facade and the roof. We price those separately.

The exact figure comes from an itemised quote after the site visit and measurements, with every task and every material on its own line.

How we work in Castelldefels

We reply to enquiries within an hour. With the office in the same town, a measuring visit is easy to arrange, and the project lead can get to site without crossing half the province.

Our own crew does the work, with trusted subcontractors on specialist trades. You deal with one person, in Russian or Spanish. The design and itemised quote are ready before work starts, and payment is staged under the contract.

If you are still house-hunting, we can look at a property before you buy and estimate the scope of work. That makes it easier to negotiate and to know what budget you will need once the deal is done.