Urban Property Declaration for IMI (Declaração de prédio urbano para o IMI)
Tax and Customs Authority (Finanças) form for entering a new urban property in the property tax register or updating the details of an existing one. You receive it blank, with an explanation of what is required.
Official form: Modelo 1 do IMI · Autoridade Tributária e Aduaneira
What it is for
- Enter a newly built urban property in the property tax register
- Report changes to a property already registered, such as extension works or a change of use
- Declare independent units or a land subdivision using the relevant annexes
What it is
IMI Form 1 (Modelo 1 do IMI) is the Tax and Customs Authority form for entering or updating an urban property in the property tax register. It includes annexes for the holders (co-ownership, usufruct, surface rights), for independent units or divisions and for land subdivisions; only use the ones your case requires. It is not a property ownership registration (that is handled at the Land Registry), a valuation, or an already issued property record (caderneta). Old instructions for the form cannot be used to confirm current rates or benefits.
What you receive
You receive the official blank PDF form, with an explanation of what it is for. The Titus assistant answers your questions about filling it in. You can combine it with other documents in the same request, with a single payment. We do not ask for any password for forms.
The assistant explains; it does not fill in or submit anything on your behalf. Do not type passwords or third parties' data.
Things to note
This PDF is blank: the person indicated on the form fills it in and signs it, and we do not submit it or guarantee any outcome. Before using it, check with the tax authority (Finanças) that the version and annexes are current for your property.
Frequently asked questions
Which annex do I use if the property has several owners?
Annex I is used to list holders in co-ownership, usufruct or surface rights. If there are more people than the form has room for, attach additional sheets as described in the instructions.
Does this form replace registering the property at the Land Registry?
No. The property tax register is a tax record kept by the tax authority (Finanças); ownership is registered separately, at the Land Registry.
Related documents
An application to the Tax and Customs Authority (Finanças) for exemption from the annual property tax on properties let for housing under old contracts, under Article 46-A of the Tax Benefits Statute (Estatuto dos Benefícios Fiscais).
Property Purchase Declaration for IMT (Declaração de compra de imóvel para o IMT)A Tax and Customs Authority (Finanças) form for declaring a property purchase, or another transfer for consideration, and calculating the tax due. It is not a form from the Institute for Mobility and Transport (Instituto da Mobilidade e dos Transportes).
Text reviewed in November 2026.