How much space a table needs
Here is the rule of thumb: about 60 cm of table edge per diner, at least 80 cm from the table edge to a wall or furniture so a chair can be pulled out and someone can stand up, and 100 to 120 cm if people need to walk behind those seated. For six people at a 180 × 90 cm rectangular table, that gives a zone of roughly 340 × 250 cm. It is not a regulation, just a practical minimum below which the table feels cramped.
Check these figures before the lighting, sockets and surrounding furniture are fixed. A table bought from a photo that "fits" the room often blocks the way to the kitchen or stops the sideboard from opening. How to plan the whole living-dining room is covered in a separate article; here we deal only with the table and what surrounds it.
Uses first, size second
Write down how many people sit at the table on a normal day and how many gather on special occasions. If it is four and ten, a table for ten will stand half-empty every day and eat into the circulation space. A table for six that extends makes more sense.
Ask yourself what else happens at the table. Children do homework, someone works on a laptop, jigsaws come out at weekends. Working needs a nearby socket and light that does not glare on the screen. Children need a surface that can take it. The shape follows from use as well: a round table for four to six works well in a square zone and for conversation, an oval fits a narrow room with no corners in the way, and a rectangular one with a bench against the wall saves clearance on one side.
Chairs and movement around the table
Draw the chairs not tucked in but at the moment someone sits down or stands up: the chair slides back 30 to 40 cm. Chairs with armrests need more width and do not always slide under the top. Check the table legs: a table with four corner legs seats fewer people along its long side than one on a central pedestal.
Now everything around it. Does the sideboard open while people are seated? Does the hallway door hit the back of a chair? Does the route from hob to fridge run behind people's backs? Does the table block the way to the balcony? Each of these small things irritates every day and can only be fixed by rearranging the whole space.
The extending table: two positions
An extending table solves "four every day, ten at Christmas", but it does not remove the need for space. The plan should show both positions: closed, with its clearances, and extended, checking where the extra chairs go and whether the table runs into the sofa.
Two more things. Where do the leaves live if they do not store inside the table? A cupboard needs a shelf of the right length. Where do the extra chairs live: folding ones in a storeroom, or regular chairs spread around the flat? Without an answer, the leaves end up behind the sofa within a year and the table never gets extended.
Light follows the table, not the room
The pendant is centred on the table, not on the room's ceiling, and the light point is only set out once the table position is fixed. The bottom of the fitting usually hangs 70 to 80 cm above the tabletop: lower and it blocks the view across, higher and it dazzles anyone standing. For a long or extending table, a linear pendant or two fittings work better than a single one in the middle.
If the table position might still change, allow some slack: an offset ceiling box, a hook with a decorative swag, or a track. A dimmer over the dining area pays for itself on the first evening with guests. If people work at the table, a socket is needed nearby, in the wall or the floor, and its position depends on the table too.
Open kitchens, floors and what to give your designer
In a flat with an open kitchen like Urgel in the Eixample, 109.80 m² with four bedrooms, the table often sits between the kitchen area and the living room and acts as a boundary. The route from kitchen to table must then stay clear of chairs, and the light over the table should form one composition with the kitchen lighting. On herringbone parquet, chairs need felt pads from day one, and a rug under the table should extend 60 to 70 cm beyond the tabletop, or the back legs of the chairs catch on its edge.
Give your designer the table model and dimensions in both positions, the chair model, the number of people on a normal day and on special occasions, how the table is used for work, and the chosen light fitting. At BCN YARD we check the table, lighting and clearances together at the design stage, while electrical points can still be moved without chasing finished walls.