The EPBD requires Spain to upgrade its worst-performing homes by 2030 and 2035. For an owner, that arrives through three things: the building code sets the U-value new windows must meet, the renovation plan and grants target poorly rated homes, and the tax deduction runs until the end of 2026. Below: the requirements themselves, the key dates, and the figures for your province.
The adopted Directive (EU) 2024/1275 (EPBD recast) works at country level rather than at the level of an individual flat or house:it sets no energy-class requirement for an individual home. The frequently quoted “class F by 2030, E by 2033” thresholds apply to the worst-performing non-residential buildings — offices and shops.
Instead, each member state must cut the average primary energy use of its residential stock — in Spain’s case by 16% by 2030 and 20–22% by 2035 — with at least 55% of that reduction coming from the worst-performing homes. Spain delivers this through its National Building Renovation Plan, the Código Técnico (CTE) and the energy certificate (CEE). Two practical conclusions follow for an owner: poorly rated homes are the priority of the renovation plan and its grants, and any new windows must meet the building code’s U-value for your climate zone.
40% deduction ends
Last day works qualify for the IRPF deductions on dwellings — up to 40% back. This is the real deadline.
Act before thisStock −16%
Spain must cut the average primary energy use of its housing stock by 16%, mostly by renovating the worst-performing homes.
Stock −20–22%
The required cut in average primary energy use rises to 20–22%.
The colder your climate zone, the lower the U-value the building code demands — and the more capable the glazing has to be. Pick your province to see the U-value your windows must meet and an illustrative installed cost. The cost figures are code-derived estimates, not market quotes — use the calculator for an exact price for your size.
Comunitat Valenciana
Illustrative cost — code-compliant window, installed
| Efficient PVC (from) | €355 |
| Typical | €515 |
| Thermal-break aluminium | €680 |
Per ~100×100 cm unit. Illustrative estimate derived from the CTE U-value requirement for this zone — not a market quote.
Reach class A/B and you could claim back up to €3,000 via the 40% IRPF deduction (until end 2026).
Figures last verified 15 June 2026. Data licensed CC BY 4.0 — reuse with attribution.
You don't have to carry the cost alone. Two schemes can stack on the same window project — and the tax deduction has a hard deadline.
Plan Estatal de Vivienda 2026–2030 — up to 40% of the cost, capped at €7,500 per dwelling.
Up to 40% back (max €3,000) — for dwellings, until 31 December 2026.
The revised EU Energy Performance of Buildings Directive (EPBD) has been in force since 2024, and Spain's deadline to transpose it passed in May 2026. Here's what the directive requires of the housing stock, how those targets reach an individual flat or house, and where windows fit into the picture.
The colder your climate zone, the lower the U-value the building code demands — and the pricier the glazing. Here's how window costs change across Spain to meet the code, why poorly rated regions face the most renovation pressure under the EU's energy rules, and how the 40% deduction changes the maths before it expires at the end of 2026.
Spain's income-tax deductions pay back 20%, 40% or even 60% of an energy-efficiency upgrade — and window replacement qualifies. But for homes the clock runs out on 31 December 2026. Here's exactly which tier you can claim, what each one requires, the certificate trap that disqualifies most rushed jobs, and how to estimate your refund.
The directive contains no obligation to replace windows by any date: the EPBD (Directive (EU) 2024/1275) sets no energy-class requirement for individual homes. It requires Spain to cut the average primary energy use of its housing stock, and windows are the cheapest single lever to lift a home’s rating. A separate rule applies once you do replace them: the new windows must meet the CTE U-value for your climate zone.
Spain must cut the average primary energy use of its residential stock by 16% by 2030 and 20–22% by 2035, with at least 55% of that cut coming from renovating the worst-performing buildings. So poorly rated homes are exactly what the National Building Renovation Plan must target.
The Spanish building code (CTE DB-HE1) caps the U-value of new or replacement windows by climate zone — from ≤ 2.7–3.2 W/m²·K on the warm coast down to ≤ 1.8 in the cold interior. Use the map above to see your zone’s limit.
Yes: there is no legal energy-class ban for homes. But the energy certificate is mandatory for a sale or a rental and appears in the listing, and a low rating means higher heating and cooling bills — which affects both the price and how fast the deal closes.
As an illustrative, code-derived guide, an installed window that meets your climate zone’s requirement ranges roughly €320–€830 per ~100×100 cm unit across Spain. Use the map for your province, then the calculator for your exact size.
Yes — a regional grant (up to 40% / €7,500 per dwelling) and the IRPF tax deduction (up to 40%) can stack on the same project. The deduction for dwellings ends 31 December 2026. See the savings guide for the details and a calculator.
Price a code-compliant window in a minute, then get quotes from verified installers in your province.