Energy retrofit obligations for Spanish property in 2026: what Directive 2024/1275 means for owners after the transposition deadline

The EU’s recast Energy Performance of Buildings Directive set a 29 May 2026 transposition deadline that no member state met, triggering infringement proceedings against all 27 on 15 July 2026. For owners of Spanish property, energy retrofit obligations depend on whether the building is a permanently occupied home or a holiday residence. The directive (Directive 2024/1275, known as the EPBD) sets a national renovation trajectory, not individual retrofit mandates, and exempts holiday homes used under four months a year. The binding obligations will come from Spain’s transposing law, still in progress.

What does the EPBD recast actually require?

The recast directive, adopted by the European Parliament and Council on 24 April 2024 and published in the Official Journal on 8 May 2024, replaces the earlier Directive 2010/31/EU (repealed from 30 May 2026). Its stated aim, set out in Article 1, is to achieve a fully decarbonised building stock by 2050. The European Commission reports that buildings account for around 40 per cent of final energy consumption in the Union and 36 per cent of energy-related greenhouse gas emissions, while 85 to 95 per cent of the buildings that exist today will still be standing in 2050 and 75 per cent of the building stock has poor energy performance. The annual energy renovation rate remains persistently low at around 1 per cent. The directive’s mechanism is not a direct EU fine on individual owners; it obliges member states to draw up national building renovation plans (Article 3), set minimum energy performance standards for the worst-performing buildings (Article 9), and make all new buildings zero-emission from 2030 (Article 7). Each member state chooses the specific tools, which is why the Spanish transposition matters more than the directive text itself.

For residential buildings the directive creates a national trajectory, not an individual mandate. Article 9(2) requires each member state to reduce the average primary energy use of its entire residential building stock by at least 16 per cent by 2030 and 20 to 22 per cent by 2035, both measured against 2020 levels, with further progressive reductions every five years until the stock reaches zero-emission status by 2050. At least 55 per cent of that decrease must come from renovating the 43 per cent worst-performing residential buildings. Member states may use minimum energy performance standards, financial support or technical assistance to hit those targets, and must not disproportionately exempt rental properties. The directive explicitly allows countries to exempt various categories of building from renovation requirements, including holiday homes and buildings of historical merit, as explained below.

Which buildings must be renovated and by when?

The directive draws a sharp line between residential and non-residential stock. For non-residential buildings, Article 9(1) sets EU-level minimum energy performance standards based on maximum energy thresholds. Member states must renovate the 16 per cent worst-performing non-residential buildings by 2030 and the 26 per cent worst-performing by 2033, with compliance checked against energy performance certificates. For residential buildings, the flexibility is greater: each country sets its own national trajectory to hit the 16 per cent and 20 to 22 per cent stock-wide reductions, choosing which buildings to target and which measures to take.

EPBD obligations and deadlines at a glance

Obligation	Buildings in scope	Deadline	Legal basis
Minimum energy performance standard (non-residential)	16 per cent worst-performing	2030	Art 9(1)(a)
Minimum energy performance standard (non-residential)	26 per cent worst-performing	2033	Art 9(1)(b)
National residential trajectory	Entire residential stock	16 per cent cut by 2030	Art 9(2)
National residential trajectory	Entire residential stock	20 to 22 per cent cut by 2035	Art 9(2)
Zero-emission new build	Public-body buildings	1 Jan 2028	Art 7(1)(a)
Zero-emission new build	All new buildings	1 Jan 2030	Art 7(1)(b)
Transposition into national law	All provisions	29 May 2026	Art 35(1)
Solar on new public and non-residential buildings	Above 250 m2	31 Dec 2026	Art 10(3)(a)
Solar on existing non-residential (major renovation)	Above 500 m2	31 Dec 2027	Art 10(3)(c)
Solar on existing public buildings	Above 2,000 m2	31 Dec 2027	Art 10(3)(b)
Solar on existing public buildings	Above 750 m2	31 Dec 2028	Art 10(3)(b)
Solar on new residential buildings	All sizes	31 Dec 2029	Art 10(3)(d)
Fossil fuel boiler incentive ban	Stand-alone fossil fuel boilers	1 Jan 2025	Art 17(15)
National building renovation plan (first draft)	All member states	31 Dec 2025	Art 3(5)
National building renovation plan (final)	All member states	31 Dec 2026	Art 3(5)

The key distinction for a Costa del Sol owner is this: a permanently occupied apartment in Marbella’s old town or a 1970s urbanisation in Nueva Andalucía falls within the residential trajectory. A holiday apartment used for ten weeks a year falls under the exemption in Article 9(6)(d), which applies to residential buildings used for less than four months of the year or with expected energy consumption below 25 per cent of year-round use. The directive does not use the term “holiday home”, but the exemption is drafted to cover exactly that category.

The residential vs non-residential divide

The distinction matters because the two tracks enforce differently. Non-residential MEPS are EU-level thresholds: every qualifying building must individually fall below the 16 per cent (2030) or 26 per cent (2033) worst-performing band, checked against its EPC. There is no flexibility in which buildings are targeted. The residential trajectory, by contrast, is a stock-wide average: Spain chooses which buildings to renovate and how, as long as the overall primary energy use falls by the required percentage. This means a single residential owner faces no EU-level obligation to retrofit, only whatever the Spanish transposing law imposes through the PNRE.

What happened after the 29 May 2026 transposition deadline passed?

The 29 May 2026 deadline passed with no member state having achieved full transposition. On 15 July 2026 the European Commission decided to open infringement procedures by sending letters of formal notice to all 27 EU member states for failing to fully transpose Directive (EU) 2024/1275. The Commission considers transposition essential to accelerate the renovation of Europe’s building stock, which is currently being renovated at a rate of only 1 per cent per year. Member states now have two months to respond, complete their transposition and notify the Commission. The two-month window from the 15 July letters closes around mid-September 2026, making that the next procedural checkpoint. In the absence of a satisfactory response, the Commission may decide to issue a reasoned opinion, the next stage in the infringement procedure.

Spain’s transposition follows the pattern established for earlier EPBD revisions: amendments to the CTE (through the Ministry of Housing and Agenda Urbana, MIVAU, and MITERD), the RITE, and the energy certification framework under RD 390/2021. The CTE website confirms that a draft royal decree modifying the CTE, which “transposes partially” Directive 2024/1275, was in public consultation from 7 November 2025 until 9 December 2025. The modification also updates several basic documents of the CTE, including the fire safety (DBSI) and accessibility (DBSUA) sections. As of August 2026, the final royal decree has not been published in the BOE, meaning Spain, like all member states, missed the 29 May 2026 deadline for full transposition.

The European Commission has already used its infringement powers on a related provision. In March 2025, it sent letters of formal notice to nine member states (Belgium, Bulgaria, Germany, Greece, Luxembourg, Austria, Poland, Romania and Slovenia) for failing to transpose Article 17(15) on phasing out financial incentives for stand-alone fossil fuel boilers by the 1 January 2025 deadline. Spain was not among them, having already aligned its national rules. The July 2026 proceedings are broader, covering the entire directive’s transposition gap across all 27 states.

How is Spain’s National Building Renovation Plan progressing?

Spain met the parallel deadline for its National Building Renovation Plan. Spain was one of seven member states (of 27) that submitted its draft PNRE before the 31 December 2025 deadline under Article 3(5). On 14 July 2026 the Commission published its first assessment report, prepared by the Joint Research Centre and the Directorate-General for Energy, covering the 16 complete draft plans received by June 2026, including Spain’s. A second assessment, covering the remaining plans, will follow later in 2026.

The Commission assesses the ambition of the draft plans in terms of targets, sufficiency and integration of policies and financial resources. Member states must then submit their final plans by 31 December 2026. The PNRE replaces the earlier Estrategia de Rehabilitacion a Largo Plazo as Spain’s national renovation planning instrument and will be reviewed every five years. MIVAU’s PNRE page confirms the plan establishes a national trajectory for residential buildings: a 16 per cent reduction in average primary energy use by 2030 and 20 to 22 per cent by 2035, both measured against 2020 levels. For non-residential buildings, Spain must set MEPS ensuring all buildings fall below the 16 per cent threshold by 2030 and the 26 per cent threshold by 2033.

The existing Spanish framework already covers several EPBD elements. RD 390/2021 governs the energy performance certificate (certificado de eficiencia energetica), which uses the A to G scale the directive requires and has a maximum validity of ten years. The CTE sets minimum energy performance requirements for new and renovated buildings. The RITE governs thermal installations. MIVAU has also launched the ARCE 2050 programme (Arquitectura Cero Emisiones), which opened the Sello ARCE 2050 call on 8 May 2026 to identify and disseminate good practices in building renovation that contribute to decarbonisation.

What is the solar energy mandate and when does it bite?

Article 10 of the directive introduces graduated solar energy installation requirements by building type and floor area. The first material deadline after the transposition date is 31 December 2026, by which all new public and non-residential buildings with a useful floor area above 250 m2 must have solar energy installations. From 31 December 2027, existing non-residential buildings above 500 m2 that undergo a major renovation or an action requiring an administrative permit for building renovations, roof works or technical building system installation must also comply. From 31 December 2027, existing public buildings above 2,000 m2 must comply. From 31 December 2028, the threshold for existing public buildings drops to 750 m2. From 31 December 2029, all new residential buildings must have solar installed. Member states may exempt buildings where the solar installation is not technically, functionally or economically feasible, but they must define those criteria in their transposing law.

The directive also requires all new buildings to be solar-ready from 29 May 2026, meaning designed and constructed to host photovoltaic or solar thermal installations without costly structural modification. This includes structural load capacity for the panels, pre-installed electrical conduit runs, and roof layouts that preserve viable installation zones. For a buyer of new-build property on the Costa del Sol, this means building permits submitted after the transposition date must meet the solar-ready standard, even if panels are not fitted at construction.

What is a zero-emission building and when does it apply?

Article 2(2) of the directive defines a zero-emission building as one with very high energy performance, zero on-site carbon emissions from fossil fuels, and zero or very low operational greenhouse gas emissions. Its annual primary energy use must be covered by energy from renewable sources generated on-site or nearby, from a renewable energy community, from efficient district heating and cooling, or from carbon-free sources. The threshold must be at least 10 per cent below the level set for nearly zero-energy buildings (nZEB) as of May 2024.

From 1 January 2028, all new buildings owned by public bodies must be zero-emission. From 1 January 2030, all new buildings must meet the standard. Until those dates, new buildings must remain at least nearly zero-energy and comply with minimum energy performance requirements under Article 5. The directive also requires life-cycle global warming potential (GWP) to be calculated and disclosed in the energy performance certificate for new buildings: from 1 January 2028 for buildings over 1,000 m2, and from 1 January 2030 for all new buildings. The Commission published a Delegated Regulation (EU 2026/52) on 4 May 2026 establishing the Union framework for the national calculation of life-cycle GWP, ensuring that member states use comparable methodologies. This means a buyer of new-build property on the Costa del Sol after 2030 will see a GWP figure on the EPC, adding a carbon-cost dimension to the existing energy label.

Which buildings are exempt from retrofit obligations?

Article 9(6) lists six categories that member states may exempt from the minimum energy performance standards in paragraphs 1 and 2. The most relevant for international owners of Spanish property are:

• Buildings of architectural or historical merit (Article 9(6)(a)): protected buildings where compliance would unacceptably alter their character, or where renovation is not technically or economically feasible. This is significant for the Costa del Sol’s older stock, including listed buildings in Marbella’s casco antiguo.
• Holiday homes (Article 9(6)(d)): residential buildings used for less than four months of the year, or with a limited annual time of use and expected energy consumption below 25 per cent of year-round use. This is the exemption that applies to many foreign-owned second homes on the coast.
• Small stand-alone buildings (Article 9(6)(e)): buildings with a total useful floor area of less than 50 m2.
• Places of worship (Article 9(6)(b)) and temporary, industrial or agricultural buildings (Article 9(6)(c)) are also exempt.

The European Commission’s own EPBD summary confirms that countries can exempt “various categories of buildings from renovation requirements, including historical buildings and holiday homes”. This is not a blanket exemption from the energy performance certificate requirement, which applies separately, but it does mean that a qualifying holiday home is not caught by the minimum energy performance standards that drive mandatory renovation.

What support is available for retrofits?

The directive requires member states to support compliance with financial measures, technical assistance and one-stop shops, prioritising vulnerable households and people affected by energy poverty. Spain already operates energy renovation grant programmes through the IDAE and regional governments, which we cover in our energy renovation subsidies guide. The Plan Estatal de Vivienda 2026-2030 (RD 326/2026, in force from 24 April 2026) provides EUR 7,000 million over five years, with rehabilitation grants up to EUR 22,000 per dwelling for accessibility, EUR 20,500 for energy efficiency and EUR 8,000 for safety, covering up to 80 per cent of works cost. The directive also introduces the renovation passport (Article 12), a voluntary roadmap for staged deep renovation that can be issued jointly with the EPC. From 1 January 2025, member states must not grant financial incentives for stand-alone fossil fuel boilers, though hybrid systems combining a boiler with solar thermal or a heat pump remain eligible.

For a property owner planning renovation work, the interaction between the EPBD obligations and the existing planning regime matters. Our refurbishment permits guide explains the licencia de obra process, and our building and renovating villa cost guide covers real EUR per m2 construction costs on the Costa del Sol.

Retrofit cost ranges and payback in Spain

The cost-benefit picture for retrofit measures in Spain in 2026, drawn from IDAE and Cype generator data, shows the following ranges: external wall insulation (SATE) runs EUR 60 to 120 per m2 installed and can cut heating bills by 40 to 60 per cent; cavity-wall insulation (insuflado) costs EUR 15 to 30 per m2 and reduces bills by 15 to 30 per cent; roof insulation runs EUR 25 to 50 per m2; and a full aerotermia (air-source heat pump) system for a 90 to 140 m2 property costs EUR 8,000 to 15,000, replacing a fossil-fuel boiler entirely. Combined with Next Generation EU subsidies and the IRPF rehabilitation deduction, the payback period for insulation measures typically falls between 4 and 8 years, and for aerotermia between 7 and 13 years depending on the subsidy level and the price of the replaced fuel. An energy retrofit that qualifies for the national grant programme and uses the renovation passport to plan stages can spread the cost over several years rather than requiring a single deep renovation.

Retrofit measure	Cost range (EUR)	Energy bill saving	Indicative payback
External wall insulation (SATE)	60 to 120 per m2	40 to 60 per cent	5 to 8 years
Cavity insulation (insuflado)	15 to 30 per m2	15 to 30 per cent	3 to 6 years
Roof insulation	25 to 50 per m2	15 to 30 per cent	4 to 7 years
Air-source heat pump (aerotermia)	8,000 to 15,000 per unit	50 to 70 per cent	7 to 13 years
Window replacement (thermal break)	350 to 700 per opening	20 to 35 per cent	8 to 12 years

What are the practical compliance steps for a Spanish property owner?

Five practical steps cover what a Spanish property owner can do now, before the final CTE amendment and PNRE arrive in the BOE. The directive’s obligations land on member states, not directly on individual owners, but the transposing law will eventually create compliance triggers that flow from the national renovation trajectory and the minimum energy performance standards.

Compliance step	What to check	Why it matters	Deadline
Obtain or update your EPC	Current energy rating (A to G) under RD 390/2021	Establishes your baseline; worst-performing buildings are first in line	Now
Check exemption eligibility	Holiday home under 4 months/year or energy use below 25 per cent	Qualifying properties are exempt from minimum energy performance standards	Now
Review solar readiness	New public and non-residential buildings above 250 m2	First solar installation deadline under Article 10(3)(a)	31 Dec 2026
Monitor the BOE	Final CTE amendment and PNRE adoption	These create the binding individual obligations, not the directive	Through 31 Dec 2026
Track the infringement response	Spain’s response to the Commission’s letter of formal notice	Two-month window closes around mid-September 2026	Through Sep 2026

The EPC is the starting point because the directive’s minimum energy performance standards are checked against it. Under RD 390/2021, the certificate uses the A to G scale and has a maximum validity of ten years. A property with an EPC in the F or G band falls within the worst-performing category that member states must prioritise. Obtaining or updating the certificate is the single most actionable step an owner can take before the transposing law arrives. Our energy performance certificate guide explains how to obtain one.

Monitoring the transposition timeline and tenant safeguards

The transposition timeline has two tracks running in parallel. The infringement track opened on 15 July 2026 when the Commission sent letters of formal notice to all 27 member states. Spain has two months to respond, complete transposition and notify the Commission, a window that closes around mid-September 2026. In the absence of a satisfactory response, the Commission may issue a reasoned opinion, the next stage. The planning track requires Spain to submit its final PNRE by 31 December 2026, alongside the final CTE amendment. A property owner watching the BOE for these instruments will have the earliest signal of which individual obligations will apply.

The directive’s tenant safeguards are also worth noting. Article 17(19) requires member states to introduce effective protections when renovation work is carried out on rented buildings, including rent support or caps on rent increases, particularly for vulnerable households. A non-resident landlord letting a Costa del Sol property long-term should watch how Spain implements this provision, as it could affect the economics of a retrofit that improves the EPC class but raises the rentable value.