Property due diligence is the unromantic part of buying in Portugal. Good. Buying a home should have an unromantic part.
Porto and the north have beautiful apartments, townhouses, farms, ruins and village houses. They also have old records, shared walls, narrow access, unlicensed works, family inheritances and sellers who may honestly not know what is wrong with the paperwork.
If you are buying, use an independent lawyer and technical professionals. Not the seller’s friend, not the estate agent’s favourite person, and not only your own hope.
Start with the documents
The property on paper should match the property in front of you. If the documents describe one thing and your eyes see another, stop and ask why.
The basic checks usually include:
- Certidao permanente do registo predial.
- Caderneta predial.
- Energy certificate.
- Use licence or legal-use documents, where applicable.
- Plans, projects or proof of licensed works.
- Condominium documents, if it is an apartment.
- Proof of debts, charges or mortgages being cleared.
Do not treat this list as enough by itself. It is only the beginning.
Land registry
The permanent land-registry certificate is one of the key documents. Gov.pt says it lets you consult all registrations in force over a property, including pending registration requests, and that it is always updated while valid.
It can show who owns the property and whether there are mortgages, attachments, usufructs, easements or other registered issues.
Ask for the current code, not an old PDF someone saved months ago. A certificate that was fine before can change if something new was registered or requested.
Caderneta predial
The caderneta predial is the tax record. Portal das Financas describes it as identifying the property, location, characteristics, owners and taxable value, among other details. It is valid for 12 months.
Compare it with the land registry. Areas, article numbers, owners, fractions and use should make sense together. They are not the same document, but they should not tell completely different stories.
Boundaries and land
For land, rural houses and properties with gardens or outbuildings, boundaries need careful checking.
A wall, fence, hedge or neighbour agreement may not be the legal boundary. In rural northern Portugal, families sometimes used land in a practical way for years without the records being tidy.
Before buying, check:
- Registered area.
- Tax article area.
- Physical boundaries.
- Access from a public road.
- Rights of way.
- Shared wells, tanks, paths or walls.
- Neighbour disputes.
If the property depends on a track, ask who owns it and who can use it. A nice view does not fix a bad access problem.
Licences and legal use
Check whether the building has the legal use you need. A dwelling, storage space, shop, agricultural building, garage, ruin and tourist rental are different things.
If work was done, ask whether it was licensed, exempt or regularised. Extensions, attic conversions, enclosed balconies, extra bathrooms, pools, annexes and old renovations can all create questions.
Unlicensed work can affect financing, insurance, resale and future renovation plans. If the answer is “everybody does it”, that is not a document.
Planning rules
If your purchase depends on future works, check the municipal rules before signing.
Ask the municipality or a qualified architect about the PDM, protected zones, heritage restrictions, agricultural or ecological restrictions, fire-risk areas, access requirements and what can actually be built.
Do not buy a ruin because someone says it can become a guesthouse, pool house or dream project “probably”. Probably is not planning permission.
Condos and apartments
For apartments, read the condominium documents. Do not just ask whether the monthly fee is cheap.
Check:
- Condominium regulation.
- Recent meeting minutes.
- Current monthly fees.
- Debts attached to the unit.
- Planned works.
- Roof, facade, lift and plumbing issues.
- Rules about short-term rental, pets, noise or alterations.
A flat can look perfect inside while the building is preparing for expensive common works.
Utilities and access
Outside the centre, check water, sewage, electricity, internet, road access and waste collection. In villages and rural areas, some houses use wells, boreholes, septic tanks or shared access.
Ask for bills, contracts and proof. If the electricity supply is weak, the road is informal or the sewage solution is unclear, understand the cost before buying.
Casa Pronta and the notary are not your full due diligence
Casa Pronta and notarial or registration processes can handle the transaction, but they are not the same as a full buyer investigation.
A clean deed process does not mean the house has no damp, the extension was licensed, the roof is good, the neighbour dispute is harmless or your renovation plan is possible.
Use your own lawyer. Use a surveyor, engineer or architect when the building deserves it. Portugal has many old buildings, and old buildings are very good at hiding costs.
Put conditions in writing
If you sign a promissory contract, make sure the important conditions are written clearly before paying a deposit.
This can include financing, document delivery, cancellation of mortgages, licensing issues, vacant possession, AL registration questions, furniture, repairs or deadlines.
Do not rely on friendly spoken promises. In a purchase, friendly should become written.
My take
I like Portuguese property, but I would never buy on charm alone. The older and more unusual the property, the more careful I would be.
Match the registry, tax record, physical property, licences, planning rules and real condition before you commit. If something does not match, pause. A slow purchase is better than owning a fast problem.
