Portugal's EPBD transposition deadline was 29 May 2026. Portugal did not wait for that deadline: Decreto-Lei n.º 11/2025, de 19 de fevereiro, partially transposed the directive more than a year ahead of it, bringing in the Renovation Passport, minimum energy performance standards (MEPS), the zero-emission obligation for new buildings from 2030, and the end of financial incentives for fossil-fuel boilers from 1 January 2025. Full transposition of the remaining articles is still outstanding. For buyers in active transactions, a property's energy rating already affects financing conditions and resale value, and will affect legal liability further as the remaining transposition lands. Decreto-Lei n.º 10/2024, de 8 de janeiro removed municipal verification at sale, which means buyers carry full responsibility for verifying compliance before signing anything.
What is the EPBD and why does the May 2026 deadline matter?
The Energy Performance of Buildings Directive (EPBD/2024/1275) requires EU member states to implement minimum energy standards for all buildings by 29 May 2026. Portugal transposes through the Sistema de Certificação Energética dos Edifícios (SCE) framework overseen by ADENE and DGEG.
The EPBD has existed since 2002 and has been revised three times, most recently through Directive 2024/1275/EU, published in the Official Journal of the EU on 8 May 2024. The deadline for member states to bring national law fully into line was 29 May 2026. The directive sets binding minimum energy performance targets (MEPS), below which a building cannot be sold or rented once a member state implements them.
Portugal already has a functioning energy certification system. All residential properties sold or rented since 2013 require a valid EPC rated A+ to F under Decreto-Lei n.º 118/2013, de 20 de agosto, as amended, now integrated with Decreto-Lei n.º 101-D/2020, de 7 de dezembro. ADENE (Agência para a Energia) administers the SCE system, with qualified experts (Peritos Qualificados) registered on ADENE's national registry. The May 2026 deadline tightens that system by introducing mandatory minimum ratings and a renovation pathway for the lowest-performing stock.
The transposition process is led by the GT-EPBD working group, created under Despacho n.º 8023/2024, de 19 de julho. The group is chaired by ADENE with the participation of DGEG, the Agência Portuguesa do Ambiente (APA), the Instituto da Habitação e da Reabilitação Urbana (IHRU), the Laboratório Nacional de Engenharia Civil (LNEC), the Instituto da Mobilidade e dos Transportes (IMT), and the IMPIC. Portugal transposed the directive's first tranche through Decreto-Lei n.º 11/2025, de 19 de fevereiro, ahead of the working group's own consultation timetable. Full transposition of the remaining articles of DL 101-D/2020 was still moving through the legislative circuit and public consultation as of the most recent public communications from DGEG and ADENE leadership (Edifícios e Energia n.º 163, January/February 2026). Confirm the current state of that remaining transposition against the Diário da República before citing a specific article number or a firm completion date.
ADENE's national EPC registry holds approximately 1.6 million residential certificates as of March 2024. Distribution across classes is uneven: around 22% rate A or B, 44% rate C or D, and 23% rate E or F (ADENE data published by Novoperfil). The bottom of the distribution is the part the EPBD targets first.
What does the directive require from Portuguese buildings?
The EPBD requires member states to set minimum energy performance standards that eliminate the worst-performing building stock from the transaction market in stages between 2026 and 2033, with the wider parque moving towards zero-emission buildings by 2050.
The directive distinguishes residential from non-residential buildings. For residential stock, the primary obligation is that all properties reaching the market for sale or rental must hold a valid EPC. Portugal already requires this. The change is that F-rated properties face transaction restrictions and lose eligibility for standard mortgage financing under updated EBA (European Banking Authority) guidelines now being adopted by Portuguese banks.
For non-residential buildings (commercial, office, public), the directive introduces stricter audit cycles. Zero-emission building (ZEB) requirements apply to new public buildings from 2028 and to all new construction from 2030.
The full calendar set by Diretiva (UE) 2024/1275 runs across four post-transposition milestones for the Portuguese parque:
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2028. ZEB obligation for new public buildings.
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2030. ZEB obligation extends to all new construction — already confirmed Portuguese law under DL 11/2025. Transaction restrictions on classes F and G are the directive's own target for this date; Portugal's confirmed law does not yet fix how, or whether, that restriction will be implemented domestically. Treat it as the trajectory, not yet as an enacted rule. The directive also targets rehabilitation of the worst-performing 15% of non-residential stock by this date.
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2033. Minimum class D for residential property is the directive's target for this date. As with the 2030 F/G restriction, this has not been confirmed as enacted Portuguese law as of this writing — it is where the transposition is heading, not a rule in force today. The directive also targets a further 10% of non-residential stock for rehabilitation.
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2040. All buildings in class A or B as an intermediate decarbonisation target.
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2050. Full ZEB parque, decarbonised, with verified indoor environmental quality.
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Minimum performance threshold. Properties rated below a nationally-defined minimum (Portugal is expected to set this at E or F depending on building age and typology) will require a Renovation Passport (Passaporte de Renovação) to demonstrate a credible improvement pathway before they can be offered for sale or rent.
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Renovation Passport obligation. Buildings that cannot demonstrate a path to compliance must obtain a formal Passaporte de Renovação under the EPBD Art. 12 and Anexo VIII framework. InspectOS issues the Renovation Passport covering energy audit, BIM modelling, ROI roadmap, green mortgage eligibility assessment, and structural survey.
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Solar readiness. New buildings and those undergoing major renovation must meet solar-readiness standards under Art. 10(6) of Directive 2024/1275/EU. The Plano Nacional de Renovação de Edifícios (PNRE), due 31 December 2026, will define national renovation targets, financing instruments, and intervention priorities by typology. The PNRE replaces the Estratégia de Longo Prazo para a Renovação de Edifícios (ELPRE) and is the document buyers should track in the second half of 2026 to understand the trajectory for their property class.
How does the May 29 deadline affect property buyers?
A buyer who purchases a property rated F or below after 29 May 2026 without a confirmed Renovation Passport takes on full legal and financial responsibility for bringing the building into compliance, with no recourse against the seller after deed signing.
Under DL 10/2024 (the Simplex Urbanístico reform), Portugal removed mandatory municipal verification at the point of sale. The notary no longer checks habitation license validity, urban conformity, or energy certificate status before signing the escritura. That responsibility now sits entirely with the buyer.
The EPBD deadline compounds this. A buyer who fails to verify:
- Whether a valid EPC exists (legally required under DL 101-D/2020, integrating DL 118/2013, Art. 12)
- The current energy rating and whether it meets the post-May 2026 minimum
- Whether a Renovation Passport is required and, if so, whether one exists ...will inherit all associated costs and legal obligations at the moment of signing. The property due diligence checklist for Portugal sets out all four mandatory documents buyers must verify before the CPCV alongside EPC and energy compliance status.
For buyers financing through Portuguese banks, this matters beyond compliance. Banks including Caixa Geral de Depósitos, Millennium BCP, Santander Totta, and BPI are adjusting mortgage products to reflect EBA guidance on energy-efficiency risk. Properties rated F are increasingly facing higher loan-to-value restrictions or require mandatory renovation commitments as a condition of mortgage approval. The market term used internally by banks for the rate penalty applied to non-compliant property is the brown discount (desconto castanho).
Foreign buyers face additional exposure. Properties in the Algarve, where over 80% of transactions involve foreign buyers (INE, 2025), include a high proportion of older villa stock rated E or F. Many sellers are listing before the deadline to avoid the Renovation Passport obligation, transferring that cost to buyers who do not conduct EPC verification before signing the CPCV (contrato-promessa de compra e venda). The complete guide for foreign buyers in Portugal covers how EPBD exposure compounds the risks of purchasing remotely.
For buyers acquiring new construction, the EPBD interacts with the existing DL 84/2021 consumer warranty regime. A new-build apartment delivered after the transposition must meet ZEB readiness on top of the structural and non-structural warranty obligations. The new build snagging inspection guide covers the verification framework for handover, including the energy compliance dimension.
Verify EPC validity and rating before the CPCV, not after.
Buying a property in Portugal? Verify the energy certificate before signing anything.
What are the risks for owners who do not comply?
Advertising or transacting a property without a valid EPC is illegal under DL 101-D/2020 with fines from €250 to €3,740 for residential properties and up to €44,890 for non-residential buildings.
An EPC is valid for 10 years from the date of issue. Owners whose certificate has expired before the May 2026 deadline must renew before listing. ADENE maintains a public registry where any buyer can verify certificate validity, but in practice many buyers and agents do not check until late in the transaction, by which point the closing timeline is at risk.
Beyond fines for missing or expired certificates, owners of low-rated properties face three specific post-deadline risks.
Transaction restriction comes first. If Portugal implements minimum performance thresholds as the directive requires, F-rated properties may only be listed with a Renovation Passport in place. Owners without one may face delays completing a sale or rental contract once those thresholds are in force domestically.
Mortgage penalty is the second risk. Banks are not obligated to offer standard mortgage terms on non-compliant properties. A buyer who discovers mid-process that their lender is applying the brown discount because of a low energy rating may renegotiate the purchase price, or withdraw entirely if the CPCV contains appropriate inspection clauses.
Renovation cost liability is the third. If a sale completes without disclosure of the energy rating, buyers may have legal recourse under Código Civil, Art. 905 (sale of defective goods) or Art. 913 (defeitos ocultos), but litigation is slow and costly. Pre-CPCV verification is faster and cheaper.
The 29 May 2026 deadline is the trigger for these risks materialising at scale. After that date, the PNRE will set the renovation pace through to 2033 and beyond. Owners who delay action push their property towards the bottom of an increasingly active market for non-compliant stock.
Which buildings are most exposed?
Buildings constructed before 1990 account for approximately 58% of Portugal's residential stock (INE, Censos 2021) and are most likely to carry E or F ratings, making them the primary target of the EPBD's minimum performance requirements.
Exposure varies by region.
Lisbon has the highest aggregate risk. Pre-1960 Pombaline and Estado Novo-era buildings dominate the Avenidas Novas, Arroios, and Mouraria districts. These buildings were constructed before any thermal regulation existed in Portugal and typically rate E or F. 68% of the building stock in the Lisbon metropolitan area predates the seismic-protection legislation approved in 1958 (Público, February 2023), and those buildings also predate modern insulation and HVAC standards. These buildings require both energy and structural assessment, the structural and seismic inspection Portugal guide covers the Eurocode 8 seismic vulnerability framework for pre-1983 stock. For the full Lisbon defect profile, see the Lisbon apartment inspection guide.
Algarve carries the highest foreign-buyer exposure. Older villa construction from the 1970s and 1980s tends to rate E or below due to single-glazed windows, minimal roof insulation, and electric heating systems with high primary energy consumption. Buyers paying above-average prices (Algarve foreign-buyer average: €406,000 per transaction, INE 2025) take on substantial renovation obligations if EPC verification is skipped.
Porto has significant pre-war stone construction in Bonfim, Paranhos, and Campanhã that rates poorly under SCE methodology due to thermal mass and wall U-values. The casa burguesa stock in the historic centre carries the same exposure with the added UNESCO classification constraints on intervention type. Porto's tight housing market means sellers hold more negotiating power, and buyers who discover energy issues post-CPCV have limited leverage. For the Porto-specific framework, see the Porto property inspection guide.
How does the EPBD interact with DL 10/2024 (Simplex Urbanístico)?
DL 10/2024 removed municipal pre-sale verification in January 2024. The EPBD May 2026 deadline adds energy compliance to the list of obligations that now sit entirely with the buyer from the moment of deed signing.
DL 10/2024 eliminated the municipal check that previously confirmed certificates, including the EPC, were in order before a sale proceeded. For the full legislative detail, see the Simplex Urbanístico guide.
The practical result for EPBD compliance: a property can be sold without a valid or current EPC. The seller bears responsibility for the fine under DL 101-D/2020, but that fine is far smaller than the cost a buyer faces in renewing an expired certificate, obtaining a Renovation Passport, or carrying out the improvement works.
Buyers using independent due diligence through RealOS can verify EPC validity and rating through the EPBD Compliance Calendar feature, which pulls live data from the ADENE registry and flags expiry dates, renovation obligations, and financing risk scores. This can be done before any offer is made.
For buyers who want physical verification of thermal performance, moisture penetration, and actual HVAC condition rather than a certificate review alone, the pre-purchase property inspection includes an assessment of installed systems relevant to the EPC rating, not document review only.
What does an Energy Performance Certificate cover?
An EPC issued under Portugal's SCE framework assesses thermal performance, HVAC systems, hot water production, renewable energy sources, and CO2 emissions to produce a rating from A+ (most efficient) to F (least efficient), valid for 10 years from issue date.
The assessment methodology, rating scale, exemptions, validity periods, and how to obtain a certificate are covered in full in the Energy Performance Certificate Portugal guide. Certificate validity is publicly verifiable at evitce.pt, to check before making any offer. Properties with gas installations must also verify the mandatory gas inspection Portugal (Boletim de Inspeção under DL 97/2017) separately — gas compliance is a distinct legal obligation not assessed by the EPC.
The relationship between the EPC and the new Renovation Passport is one of complement rather than substitution. The EPC classifies a building at a point in time. The Renovation Passport defines the staged pathway from the current class to compliance with the relevant minimum at each EPBD milestone. The two documents share the ADENE database and the qualified expert pool. A buyer of an E or F-rated property typically needs both to make an informed decision.
What improvement path does InspectOS recommend?
For properties rated E or below, the Renovation Passport produces a costed improvement roadmap, green mortgage eligibility assessment, and structural survey, giving a buyer the complete picture before committing to a low-rated property.
A property rated D is manageable without major works. Window replacement, HVAC upgrade, or solar water heating can often move a D to a B or C, and the cost is proportionate. Banks typically offer standard mortgage terms on D-rated properties with minor improvement commitments.
A property rated E or F requires more detailed analysis before purchase. The Renovation Passport gives a buyer:
- An energy audit identifying which fabric and system interventions produce the best cost-per-rating-class improvement
- A BIM model of the building as-found
- A costed improvement schedule with contractor-ready specifications
- A green mortgage pathway assessment showing which lenders offer preferential rates after renovation
- A structural survey, because buildings rated E or F on energy grounds are often also at risk structurally; the moisture inspection guide covers concealed moisture damage commonly uncovered during energy renovation For buyers at the offer stage who want a fast initial read before committing to a full Renovation Passport, the EPC provides the current rating and remaining certificate validity. For complete pre-purchase coverage including physical condition assessment, the Buyer Essentials Bundle (Pre-Purchase Inspection plus Simplex Safe plus EPC) is available at inspectos.pt.
Frequently Asked Questions
My property has an EPC from 2015. Is it still valid for the May 2026 deadline?
A certificate is valid for 10 years from issue date. A 2015 certificate expired in 2025 and must be renewed before any transaction or rental. Certificates issued in 2016 or later remain valid today, but those from 2016 need renewal before 2027. The expiry date is on the document itself and verifiable on the ADENE registry at evitce.pt.
Can a buyer use the energy rating to negotiate a lower price?
Yes, and this is increasingly common. A property rated E or F carries documented renovation needs. An InspectOS EPC combined with a independent contractor quotes for the required works gives a buyer a factual basis for price negotiation before signing the CPCV. Some buyers negotiate a price reduction based on documented improvement scope, then carry out the works after purchase. Portuguese banks pricing the brown discount on non-compliant properties effectively confirm this market practice at the financing level.
What is a Renovation Passport and when is it required?
A Renovation Passport (Passaporte de Renovação) is a formal document that maps a building's path from its current energy rating to compliance with minimum performance standards. Under the EPBD transposition, it will be required for properties that fall below the minimum performance threshold, expected to apply to F-rated residential properties from 29 May 2026. The instrument is defined by Diretiva (UE) 2024/1275 Art. 12 and Anexo VIII. The InspectOS Renovation Passport covers energy audit, BIM model, costed improvement roadmap, green mortgage assessment, and structural survey. Get a quote at inspectos.pt.
Does the EPBD affect commercial property differently from residential?
Yes. For non-residential buildings (offices, retail, hospitality), the EPBD introduces stricter requirements including mandatory smart-readiness indicators, more frequent energy audits, and zero-emission building standards for new construction from 2028. The worst-performing 15% of non-residential stock must be rehabilitated by 2030, with a further 10% by 2034. Commercial property buyers should commission a technical due diligence inspection alongside any EPC review. Contact InspectOS for a commercial assessment quote via inspectos.pt/en/schedule.
How long does it take to get an EPC in Portugal?
An InspectOS EPC completes within 5 to 7 working days from the site visit, covering the on-site assessment, ADENE submission, and certificate delivery. For buyers working to a CPCV deadline, booking early in the due diligence process avoids timeline pressure.
What is the brown discount and how does it affect my mortgage?
The brown discount (desconto castanho) is the rate or LTV penalty Portuguese banks apply to property loans where the underlying asset is rated F or G. It is not a single fixed adjustment; each bank prices the discount according to its internal energy-efficiency risk model, aligned with EBA Guidelines on Loan Origination and Monitoring. Caixa Geral de Depósitos, Millennium BCP, Santander Totta, and BPI have all adjusted product terms to reflect this risk. A buyer expecting standard mortgage terms on a low-rated property should request a pre-approval indication before signing the CPCV.
What happens to my property if I do nothing before 29 May 2026?
For most owners, the immediate effect on 30 May 2026 is limited. The transposition takes effect, but enforcement and the formal minimum performance thresholds will roll out in phases through 2030 and 2033. The practical change is at the transaction level: any sale or new rental contract initiated after the deadline triggers the buyer or tenant verification requirements. Owners planning to sell or list for rental within the next three years should commission a current EPC and assess whether a Renovation Passport is needed. Owners planning to retain the property for the long term have the PNRE timeline (publishing 31 December 2026) to plan against.
Conclusion
Portugal's EPBD compliance deadline of 29 May 2026 is already affecting mortgage conditions, seller behaviour, and buyer risk in active transactions. Properties rated E or F are being listed by sellers who want to transfer renovation obligations before the Renovation Passport requirement takes full effect. Under DL 10/2024, those obligations transfer to the buyer at deed signing with no institutional safeguard.
The entry point for any buyer is verifying the current energy rating. The Energy Performance Certificate establishes the current rating, remaining validity, and whether a Renovation Passport is needed before any further commitment is made.
Originally published 2 April 2026 | Updated 18 May 2026 | Reviewed by InspectOS Engineering Team | ADENE-Accredited Experts | InspectOS Portugal
Sources
- Directive 2024/1275/EU (EPBD recast, OJ 8 May 2024)
- Decreto-Lei n.º 101-D/2020, de 7 de dezembro (SCE framework)
- Decreto-Lei n.º 118/2013, de 20 de agosto (SCE prior framework, integrated)
- Decreto-Lei n.º 10/2024, de 8 de janeiro (Simplex Urbanístico)
- Decreto-Lei n.º 84/2021, de 18 de outubro (consumer warranty)
- Despacho n.º 8023/2024, de 19 de julho (GT-EPBD)
- Código Civil Arts. 905 and 913
- ADENE national EPC registry
- ADENE data on certificate distribution (March 2024, via Novoperfil)
- Edifícios e Energia n.º 163 (January/February 2026), DGEG and ADENE leadership communications
- INE Censos 2021
- INE property transaction data 2025
- CML Programa ReSist
- EBA Guidelines on Loan Origination and Monitoring (EBA/GL/2020/06, updated 2024)