Urban Rehabilitation in Porto: ARU, 6% VAT, and Available Incentives (2026)

Do you own a property in Porto and are thinking about rehabilitating it? You’ve probably heard about the 6% VAT or IMI exemptions for rehabilitation works—but understanding exactly what you are entitled to, and under what conditions, is not always simple. This article explains, with accuracy and accessible language, the set of tax benefits available to owners rehabilitating properties in Porto: from the legal framework of Urban Rehabilitation Areas (ARU) to the practical process of accessing reduced VAT. The information is based on official sources—Porto Citizen’s Portal, Porto Vivo SRU, Tax Authority, and current legislation.

Important Note The application of tax benefits always depends on the specific situation of the property, the type of work, and the owner’s specific conditions. This article is for general informational purposes. We always recommend consulting an architect and a certified accountant before making decisions.

1. What is an Urban Rehabilitation Area (ARU)?

An Urban Rehabilitation Area is a territory delimited by the Municipal Assembly where the state of degradation or obsolescence of buildings and infrastructure justifies coordinated intervention. The creation of an ARU is not just a technical classification: it is the legal instrument that opens access to a significant set of tax benefits for those who rehabilitate within that perimeter. You can read more about ARUs and ORUs in our article.

2. Porto’s ARUs — Which areas are covered?

Porto is one of the Portuguese cities with the highest ARU coverage. The Municipality, coordinated by Porto Vivo, SRU (Urban Rehabilitation Society), has delimited an extensive set of areas over the years covering much of the city’s historical and consolidated fabric.

The following table summarizes Porto’s ARUs, the corresponding geographic area, and whether they have an approved ORU in force—a relevant condition for 6% VAT:

Aqui tens a tabela com a mesma formatação: contornos em cinza escuro em todas as células, cabeçalho destacado e o preenchimento necessário para manter a consistência visual.

How to know if your property is in an ARU?

Consult the Porto Citizen’s Portal (portaldomunicipe.cm-porto.pt) in the Planning and Rehabilitation section, where you can check the location of ARUs and ORUs in force. Porto Vivo, SRU also provides information to investors and owners—contact at portovivosru.pt.

3. 6% VAT on rehabilitation works — how does it work?

The 6% VAT is probably the most sought-after benefit and also the most complex in terms of access conditions. There are two relevant items (verbas) in the VAT Code (CIVA) that function differently:

Item 2.23 of List I of CIVA — urban rehabilitation contracts in ARUs

Applies to contracts carried out on properties located in ARUs for which an Urban Rehabilitation Operation (ORU) has been approved. This requirement was clarified by a ruling of the Supreme Administrative Court in March 2025, which established that it is not enough for the property to be in an ARU—the ARU must have an approved ORU.

This means that for properties within Porto ARUs that do not yet have an approved ORU, this item may not apply. Always check the updated status of your ARU before assuming you are entitled to reduced VAT in this framework.

Item 2.27 of List I of CIVA — works on residential properties

This item is broader and less restrictive: it applies to contracts for improvement, remodeling, renovation, restoration, repair, or conservation of properties or units used for housing, regardless of whether they are in an ARU. The property must actually be used as a residence by the owner of the work—it does not apply to vacant properties acquired for resale.

There is an important condition regarding materials: if the cost of materials included in the contract does not exceed 20% of the total value, the 6% rate applies to the global value. If it exceeds 20%, labor is invoiced at 6% and materials at 23%—or, alternatively, the invoice can be global at the normal rate (23%) if not itemized.

Practical Example — Item 2.27

Renovation work on an apartment inhabited by the owner: total value €12,000.

Labor: €9,600 (80%) — Materials: €2,400 (20%).

Since materials do not exceed 20%, 6% VAT applies to the total: €720 VAT.

If materials were €3,600 (30%), the contractor would invoice 6% on €8,400 (€504) and 23% on €3,600 (€828): Total VAT = €1,332.

Source: Caixa Geral de Depósitos / Saldo Positivo (Oct 2025) and APCMC.

4. IMI Exemption — what applies in Porto?

After completing a rehabilitation work that raises the property’s state of conservation by at least two levels (reaching at least ‘Good’ level) and meets energy efficiency and thermal quality requirements, the owner can apply for an IMI exemption. In Porto, Porto Vivo, SRU provides information on three distinct modalities:

1. Exemption for 3 years (Art. 45 EBF): For properties in ARUs or completed over 30 years ago, after certified rehabilitation. Renewable for another 5 years if the property is intended for permanent residential rental.

2. Exemption for 5 years with energy valorization (Arts. 3 and 14 of Porto Exemption Regulation): Additional issuance of an Energy Valorization Certificate by the Porto Energy Agency. No possibility of renewal.

3. Exemption for 5 years without energy valorization (Art. 15 of the Exemption Regulation): Conditions identical to the previous modality but without the energy certificate.

Essential condition for IMI exemptions

It is mandatory to request an initial technical inspection from the City Council BEFORE starting the work, so that the starting state of conservation is assigned. Without this inspection, it is impossible to prove the two-level increase. After completion, a final inspection and an energy certificate are required.

Sources: Jornal Expresso

5. Other tax benefits — IMT and IRS

IMT Exemption on Acquisition

Anyone acquiring a property in an ARU or completed over 30 years ago, with the aim of rehabilitating it, can benefit from IMT (Municipal Property Transfer Tax) exemption. The condition is that works must start within a maximum of three years after acquisition.

On the first sale subsequent to the rehabilitation intervention, if the property is intended for permanent residential rental or own permanent residence in an ARU, there is also an IMT exemption.

IRS Deduction — 30% of expenses

Individual owners who carry out rehabilitation works on properties located in an ARU can deduct 30% of the expenses incurred from their IRS, up to a limit of €500 per year.

Reduced 5% rate on capital gains

On the first sale of a rehabilitated property in an ARU, the capital gains are taxed at an autonomous rate of 5% (instead of the normal progressive rates), which can represent significant savings for investors.

6. Summary of Benefits — Complete Table

Sources: Porto Vivo SRU · Tax Benefits Statute (EBF) · CIVA, List I.

7. How to apply for rehabilitation tax benefits in Porto

To access incentives, it is essential to understand the administrative procedure:

a) For IMI and IMT exemption effects

1. Applicant submits the request to Porto Municipality.

2. Municipal services verify instructional documents.

3. Request is analyzed.

4. A certificate relative to the rehabilitation work is issued.

5. Recognition proposal follows for approval by the Municipal Executive.

6. Decision is communicated to the Tax Office.

b) For IRS/IRC deduction effects

1. Applicant submits the request to the Municipality.

2. After analysis, a certificate is issued.

3. The certificate is delivered to the applicant to present to the Tax Authority if requested.

c) For reduced VAT rate effects

1. Applicant submits the request and pays the municipal fee.

2. Municipal services issue a declaration regarding the property’s location.

3. Declaration is delivered to the applicant to present to the Tax Authority.

8. Rehabilitation in Porto seen by MJARC

We have been working on rehabilitation projects in Porto for two decades. What distinguishes us is not just technical mastery—it’s process knowledge: knowing how to interact with legal entities and anticipating requirements that make a difference in accessing tax benefits.

If you have a property in Porto and are considering rehabilitating it—whether for your own home, rental, or investment—MJARC can conduct a first feasibility assessment and help you through the process. Talk to us and schedule a meeting.