End of ‘F’ & ‘G’ Energy Certificates in Spain: What to Do

A massive legislative and market shift is rapidly approaching the Spanish real estate sector, driven by the EU’s Energy Performance of Buildings Directive (EPBD). The era of treating energy efficiency as an optional luxury is over. Property owners are now on a strict countdown to upgrade their building envelopes or face severe financial and market consequences.

The Phase-Out of 'F' and 'G' Certificates

The revised European directive aims to drastically reduce carbon emissions from buildings by establishing minimum energy performance standards. The reality for the Spanish housing stock is stark: approximately 80% to 85% of homes currently hold a low energy performance rating (E, F, or G). While modern apartments make up about 75% of the national housing stock, the remaining 25% consists of single-family properties, rural fincas, and historic homes. These traditional buildings, frequently constructed with thick natural stone or single-skinned masonry, are the most thermally vulnerable. If your property remains an uninsulated energy sink by 2030, the real-world consequences are severe. Unrenovated 'F' and 'G' homes are already facing downward price pressure, and buyers will increasingly struggle to secure favourable mortgages as banks factor energy performance into their risk assessments.

To fix this, property owners must slash their primary heating loads. However, attempting to do this quickly with modern synthetic insulation—like spray foam or foil-backed plastic boards (PIR)—is a proven disaster. Across Europe, these non-breathable materials are failing in historic buildings because they trap damp inside porous masonry, leading to hidden condensation, spalling stone, and rotting structural timbers. The only safe way to upgrade an old stone home and improve its energy rating is with breathable, natural insulation like cork and wood fibre.

Exposing Heritage: Above-Rafter Insulation & Laser Cleaning

Upgrading your roof's thermal envelope doesn't mean you have to hide its history behind plasterboard. In traditional Spanish homes, we regularly specify solid above-rafter insulation systems (such as Steico wood fibre). By placing the thick thermal barrier on top of the roof structure rather than between or below it, you achieve exceptional energy performance while leaving the historic internal wooden beams fully exposed. This adds immense architectural character and market value to the property.

However, exposing these antique timbers often reveals a monumental restoration challenge. Historically, Spanish roof spaces were used to smoke and cure meats, leaving the chestnut beams coated in decades—or centuries—of stubborn, greasy, rock-hard soot. Conventional sandblasting is far too aggressive and destroys the wood's original patina and craftsmen's adze marks. This exact challenge is why ECS is currently developing a high-production, mobile laser cleaning service. Our laser ablation technology instantly vaporises this historic grime without touching the original wood, allowing you to sympathetically restore and display your home's historic timbers while fully complying with 2030 insulation standards.

The Financial Lifeline: NextGenerationEU & The 2026–2030 State Plan

Recognising the monumental cost of overhauling the nation's housing stock, Spain channelled billions in European NextGenerationEU funds into deep energy retrofits. As those initial direct grants wind down in 2026, the financial support has evolved into the new State Housing Plan (Plan Estatal de Vivienda 2026–2030).

This new framework mobilises a €7 billion national budget. Crucially, 30% of these funds are strictly dedicated to building rehabilitation, accessibility, and urban renewal. Under this plan, homeowners can access direct subsidies of up to €20,500 per dwelling for structural energy efficiency upgrades. Furthermore, for traditional and historic properties, there is an additional supplementary grant of up to €30,000 per dwelling for buildings with heritage or cultural protection status, acknowledging the higher costs of sympathetic restoration.

Stacking the Savings: IRPF Tax Deductions

To further incentivise property owners, the State offers highly lucrative personal income-tax (IRPF) deductions for energy-efficiency works, which remain legally active through to 31 December 2027. These deductions can be combined with direct regional grants, allowing homeowners to recover a massive percentage of their initial investment:

• The 20% Deduction: Available for renovation works that successfully reduce a home's heating and cooling demand by at least 7%. The base is capped at €5,000 per year.
• The 40% Deduction: Available for deeper retrofits that reduce non-renewable primary energy consumption by at least 30%, or that elevate the home’s energy rating to an 'A' or 'B'. The base is capped at €7,500 per year.
• The 60% Deduction: Designed for whole-building energy renovations that reduce non-renewable primary energy consumption by at least 30% or achieve an 'A' or 'B' rating. This offers a cumulative maximum limit of €15,000 per taxpayer.

The Strict Rules of Engagement: How to Apply

Accessing these EU funds and state grants requires strict adherence to building physics and bureaucratic procedure. The absolute main condition for claiming these benefits is proving a measurable reduction in non-renewable primary energy consumption—typically requiring a minimum reduction of 30%.

1. The "Before" Assessment: Before any installation begins, you must commission an official Energy Performance Certificate (CEE) to establish the property's baseline. Skipping this initial certificate means you forfeit both the direct grants and the tax deductions entirely.
2. Submit the Application: You must submit your technical project (signed by a qualified technician outlining the breathable insulation upgrades) via official regional housing portals or the IDAE platforms.
3. Execute and Track Works: Cash payments are strictly prohibited. You must retain all full invoices showing the VAT breakdown alongside verifiable proof of bank payments (transfers or card receipts).
4. The "After" Certification: After the renovation, a second CEE is required. The administration will compare the "before" and "after" certificates to verify that the required 30% energy savings were actually achieved.
5. Justification and Payout: Submit this final certificate, your proof of bank payments, the detailed invoices, and a declaration of responsibility signed by your technician to close the file and receive the funds.

The Bottom Line

The push for energy efficiency is fundamentally reshaping the Spanish property market. Upgrading your building's thermal envelope is no longer an optional aesthetic choice; it is an economic necessity to keep your property viable. Undertaking proper, breathable insulation upgrades now means the EU and the Spanish government help foot the bill. Waiting means paying for the entire structural overhaul yourself when the market eventually forces your hand.