Energy Certification in Portugal: What International Investors Need to Know

When buying a house in Portugal, understanding the energy certification system is essential. This document isn’t just a formality—it plays a crucial role in every real estate transaction. Whether you’re purchasing, selling, or renting a property, the energy certificate is mandatory and provides a detailed overview of the building’s energy efficiency. Let’s break down what international investors need to know.

Contents hide

1 What is Energy Certification?

2 Hot to Get an Energy Certificate in Portugal?

3 What Does it Cost?

4 How Long Does It Take?

5 Required Documents

6 How Long is It Valid?

7 Why It Matters For International Investors?

What is Energy Certification?

The energy certificate evaluates a property’s energy performance, rated from A+ (most efficient) to F (least efficient). It reveals insights into energy consumption, environmental impact, and potential savings.

Since 2008, the certificate has been required for all new constructions (Decree-Law 78/2006 and Ordinance 461/2007), and since 2013, for all properties listed for sale or rental (Decree-Law 118/2013).

Only certified professionals accredited by ADENE (Portuguese Energy Agency) are authorized to issue it. They assess elements like insulation, heating and cooling systems, hot water production, and solar exposure.

Hot to Get an Energy Certificate in Portugal?

To start, search for licensed professionals via the Certificar é Valorizar website. Get several quotes, as prices can vary based on location, property type, and expert.

What Does it Cost?

The fees for obtaining this certificate may vary and are twofold:

Government registration fees range from €28 (T0-T1) to €65 (T6 or larger), plus VAT.
Expert service fees are separate and not standardized, so comparing rates is recommended.

How Long Does It Take?

After a property inspection, the certificate is typically issued within 2–3 working days, assuming no delays.

Required Documents

You’ll need the following documents to request the energy certificate:

Floor plan of the property
Urban property register (“caderneta predial”)
Land registration certificate (“certidão de registo na conservatória”)
Technical specifications of the property

Here are some helpful links where you can find the documents:

How Long is It Valid?

The validity period of the document varies depending on the type of certificate and building: 10 years for residential properties and small commercial buildings and 8 years for large commercial and service buildings. It must be renewed after the validity period.

Why It Matters For International Investors?

Here’s why energy certification is a smart consideration for anyone making a real estate investment in Portugal:

Identifies areas for energy cost reduction
May qualify you for tax benefits, such as reductions on IMI and IMT
Boosts your property’s market value

At Vasco Invest, we guide you every step of the way, making the certification process smooth and stress-free — ensuring you make smart, informed decisions when buying a house in Portugal.