What it costs to build a house in Portugal in 2026: the official numbers

No official body publishes a market price per square metre for building a house. What exists is better: INE's cost index, the State's own 570 €/m² value, the median prices of finished homes by region, and the taxes and fees around the building — with how to read the quote that decides your price.

Published 9 April 2025Updated 19 September 2026Facts checked against official sources

Building costs rose 6,8 % in a year (INE, July 2026): materials +6,3 %, labour +7,3 %
570 €/m² is the official "average construction value" the tax authority uses in 2026 to value new houses (Portaria n.º 471/2025/1) — a reference, not a builder's price
What finished houses sell for: 2 337 €/m² median in Portugal in the first quarter of 2026, 3 836 €/m² in Greater Lisbon, 2 552 €/m² in the Porto area (INE)
Land carries tax: IMT of 5 % on rural land, 6,5 % on building land, plus 0,8 % stamp duty

“How much does it cost to build a house in Portugal?” has one honest answer: the number on the quote your builder signs, for your plot, your drawings and your finishes. Anything else is a guess dressed as a figure. What this article gives instead is the set of official numbers that frame that quote — how fast costs are moving, what the State itself counts as the value of a square metre of new construction, what finished houses are worth on the market, and every cost around the building that people forget: land taxes, projects, permits, utilities, the tax on the finished house.

The official numbers, September 2026

Cost trend. The INE construction-cost index for new housing rose 6,8 % between July 2025 and July 2026; the price of materials went up 6,3 % and the cost of labour 7,3 %. Labour has outpaced materials all year. A quote signed in 2025 and started in 2026 is therefore short by roughly that much, which is why builders now quote with price-revision clauses.

The State’s own square metre. Every year a ministerial order fixes the valor médio de construção por metro quadrado used by Finanças to value buildings for property tax. For 2026 it is 570 €, up from 532 € in 2025 (Portaria n.º 471/2025/1). It is the base of the tax valuation formula, and the State’s benchmark for what a square metre of ordinary construction costs — before the land, the projects, the fees and the margin of anyone involved. Market quotes for a turnkey house sit well above it; the gap is what you are paying for design, quality, location and risk.

What a finished house is worth. INE’s price statistics give the other end of the calculation. In the first quarter of 2026 the median price of a home sold in Portugal was 2 337 €/m², 19,8 % more than a year earlier. By sub-region: Greater Lisbon 3 836 €/m², Algarve 3 352 €/m², Setúbal peninsula 2 996 €/m², Madeira 2 863 €/m², Porto metropolitan area 2 552 €/m². The Lisbon municipality stood at 5 292 €/m², Cascais at 5 000 €/m². Bank valuations tell the same story: the median appraisal value for mortgage purposes was 2 240 €/m² in July 2026, up 15,2 % in a year. If a plot plus construction comes in clearly under the local median, building makes financial sense; if it does not, buying an existing house is the cheaper road.

How much is being built. 48 844 dwellings were licensed in 2025, the highest number since 2011, and 30 425 were completed (INE). In the second quarter of 2026 the number of new dwellings licensed rose another 10,8 %. Demand for builders is high — which shows in the labour figure above.

The costs around the building

Cost	Rule or source
IMT on the land	5 % of the price for rural land (prédio rústico), 6,5 % for building land and other urban property (CIMT art. 17.º, n.º 1 d) and e)); a 10 % flat rate if the buyer is domiciled in a listed tax haven (n.º 4)
Stamp duty on the purchase	0,8 % of the price (CIS, verba 1.1)
Notary and registration of the land	Deed and land-registry fees at the notary’s tariff and the registry’s price list — ask for the quote with the deed
Projects	Architecture plus the speciality projects (structure, water, electricity, gas, thermal, acoustic, fire), each signed by a qualified professional — fees agreed with each office
Municipal fees	Licensing fee and infrastructure fee, set by each council’s regulation (RJUE art. 116.º) — no national tariff; ask the council for its table
Utilities	Connection to water, sewage and electricity at the operators’ tariffs; on a plot without infrastructure, the extension is yours to pay
IMI once built	0,3 % to 0,45 % a year of the taxable value the tax office assigns with the 570 €/m² base (CIMI art. 112.º); a three-year exemption exists for a main home whose taxable value does not exceed 125 000 € for households with income up to 153 300 € (EBF art. 46.º)
Own-construction VAT	Building for yourself is not a business: the VAT on materials and contractors is a cost, not a credit

Land that cannot be built on is the expensive mistake. A cheap rural plot is cheap because the municipal plan does not allow a house on it. Before signing anything, obtain the council's pedido de informação prévia: what may be built, how big, with which access and utilities. Our guide to building permits in Portugal explains the procedure and the deadlines.

Reading a builder’s quote

The quote is where the price is decided, so read it the way a surveyor would:

Per-item, not per-square-metre. A serious quote lists quantities and unit prices by chapter — earthworks, foundations, structure, walls, roof, windows, plumbing, electricity, finishes — and states what is excluded. A single €/m² figure hides where the money goes.
Specifications attached. Brand and grade of windows, insulation thickness, kitchen and bathroom fittings, floor materials. “Equivalent” is where disputes start.
Price-revision clause. With materials and labour moving 6–7 % a year, the quote must say whether the price is fixed and for how long, and which index applies otherwise.
Deadline and penalties. Start date, completion date, what happens per week of delay — and the licence’s own completion deadline, which the works must respect (RJUE art. 71.º).
Payment against progress. Instalments tied to finished stages, never to calendar dates; a final retention until the completion statement is filed with the council.
Insurance and registration. The contractor’s licence with IMPIC for the value of the works, and the site insurance.

A worked frame, without invented prices

Take a 150 m² house on a 600 m² plot bought for 60 000 €. The land costs 60 000 € plus 6,5 % IMT (3 900 €) and 0,8 % stamp duty (480 €) if it is classified as building land, plus deed and registration. Add the architecture and speciality projects, the municipal fees from the council’s table, the utility connections — and then the construction quote itself, per item. Once finished, Finanças values the house with the 570 €/m² base and the location, quality and age coefficients of the CIMI, and IMI follows at the municipal rate. Compare the total with the local median price of a finished home: 2 337 €/m² nationally, or your municipality’s figure in INE’s quarterly release. That comparison, not a rule of thumb, tells you whether to build or to buy.

What is the average cost per square metre to build in Portugal?

There is no official market figure. The State's reference for tax valuation is 570 €/m² in 2026; market quotes for turnkey houses are higher and vary by region, design and finishes. The reliable number is a per-item quote from a licensed builder.

Are building costs still rising?

Yes. INE's index for new housing construction was 6,8 % higher in July 2026 than a year earlier, with labour up 7,3 %.

Is it cheaper to build than to buy?

Compare the full cost of land, taxes, projects, fees and construction with the median price of existing homes where you want to live (2 337 €/m² nationally in early 2026; much more in Lisbon, Cascais or the Algarve). In high-price areas building often wins; in inland areas the existing stock is often cheaper than construction.

Which taxes apply when I buy the plot?

IMT at 5 % for rural land or 6,5 % for building land, plus 0,8 % stamp duty, paid before the deed. Both are calculated on the higher of the price and the tax value.

Can a foreigner buy land and build?

Yes; there is no nationality restriction on buying land or obtaining a building licence. You need a Portuguese tax number (NIF) and, for a non-resident, a tax representative may be required — see our NIF guide.

Sources and official references

Contents

The official numbers, September 2026

The costs around the building

Reading a builder’s quote

A worked frame, without invented prices

Sources and official references

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