How much does it cost to build a drywall wall?

I've already put up drywall at home and the cost really depends on the size, whether it's basic or with insulation, and local labor rates - but figure roughly 15 to 25 euros per square meter, maybe a bit less if you do it yourself.

Do you mean an entire wall or a small partition? The price varies quite a bit depending on the size, whether you need special finishes, and what region you're in, but generally it's around 30 to 50 euros per square meter for labor, not including materials. If it's complete professional work (boards, framing, cutouts, painting), it can go up to 80-100 euros/m² or more, whereas if you do the board installation yourself and just hire basic labor, it comes out much cheaper. Best thing is to get quotes from local companies, since they'll calculate costs based on your specific project.

The price varies too much to give you a fixed number, but yeah, that's really it - material plus labor add up quite a bit. Here in Brazil you're looking at something between 80 to 150 reais per square meter if it's just the plate and basic structure, but it goes up to 200+ if you include acoustic or thermal insulation. People don't mention that it changes a lot depending on the region and the worker you hire.

What nobody talks about is that if you have a bit of patience and help with the installation (or do it yourself if it's not a structural wall), you can save a lot. Like, taking responsibility for bringing the plates, marking the outlet points and holes reduces the professional's quote. It's also worth buying material directly from a construction supply store instead of hiring someone who already includes everything in the price - it works out cheaper.

Another thing: if the wall is temporary or you want to change it later, drywall is perfect for that exact reason, but the upfront investment might seem high if you're comparing it to regular brickwork. If it's a small partition wall, the fixed cost of the professional's travel and setup ends up weighing more on the per-square-meter cost.

The most reliable way to find out the price is to ask local companies for quotes, because it really varies a lot depending on the region, the type of structure, and whether you include insulation or special finishes. From what I've seen around here, the cost per square meter for labor plus materials is somewhere between 25 and 40 euros, but that's a pretty rough estimate - there are areas where it's more expensive, others where it's cheaper. The important thing is not to let yourself be swayed by the lowest number, because a poorly done installation will cause problems down the line.

The guys already covered the right prices, but there's a practical detail missing: if you're not in a rush, buy the materials little by little when there are sales (Leroy Merlin, Telhanorte and similar places usually run seasonal discounts) and that cuts the final cost quite a bit. Another thing is to negotiate directly with the contractor to pay just for labor if you can manage to gather everything yourself, because sometimes the markup on materials built into the quote gets pricey.

The most important thing is to separate the material cost from the labor cost, because the difference is huge! The prices I see there with Brazil and other currencies don't apply to Portugal, where simple drywall actually runs around 15-25€/m² in materials, but then you have to add labor costs that easily double or triple that value depending on the complexity and the professional you hire.