Legal due diligence before buying property in Portugal: what the buyer must verify

Due diligence asks whether the file supports the purchase

Legal due diligence is the evidence review that should happen before the buyer commits substantial money. It is distinct from contract review: the contract allocates risk, while due diligence tests the property, seller and supporting documents.

The result should state what is confirmed, what remains missing and what must be resolved before the CPCV or completion.

Identify the legal property

Compare the land-registry description, tax description, address, fraction, area references, parking, storage and any associated land.

Marketing plans and photographs help identify the commercial product, but the legal records define what is registered. Material inconsistencies require explanation and, where necessary, correction.

Confirm ownership and authority

Check the registered owner and the authority of the person signing. Company sellers require corporate records and signing powers. Representatives require a valid power of attorney. Inheritance, co-ownership and marital-property issues may require additional parties or documents.

The buyer should know who can legally promise and transfer the property.

Review charges and pending registrations

The land registry can show mortgages, attachments, usufructs and other registered positions, together with pending requests. Identify which items may remain and which must be cancelled before or at completion.

A seller mortgage is common, but the cancellation mechanics and settlement evidence must be planned.

Compare tax and registration information

The tax record should align sufficiently with the property being sold. Differences in description, area or use may indicate an administrative issue that requires clarification.

Due diligence should not assume that two official records are consistent simply because both exist.

Review construction and use evidence

Depending on the property, examine use licensing or exemption, technical records, energy certification, plans and evidence relating to alterations.

Renovations, extensions, enclosed balconies, converted storage or changed use may create legal and financing issues. An architect or other technical professional may be required where the question goes beyond legal document review.

Apartment and condominium review

For an apartment, request the administrator's declaration, meeting minutes, budgets, accounts, insurance and building rules.

Identify seller debts, approved works, future assessments, reserve-fund weakness, litigation and restrictions that affect the buyer's intended use.

Special project and seller risks

New-build and off-plan purchases require review of the developer or SPV, land relationship, permits, specifications, project financing, instalment payments and completion conditions.

Rural land, protected areas, rights of preference, tenancies, leases or other use arrangements may also require specialised review.

Documents that are missing matter

A due-diligence report should not fill gaps with assumptions. It should identify the missing item, why it matters and the consequence if it is not produced.

The CPCV can then require delivery of the evidence and give the buyer a remedy if the issue remains unresolved.

Connect findings to the contract

Due diligence is most useful when the findings become contractual protections. Examples include a clean-title condition, seller document deadline, repair obligation, mortgage cancellation mechanism, condominium cost allocation or right to terminate.

The report and CPCV should tell the same risk story.

Know the limits

Legal due diligence does not assess hidden physical defects, structural condition, market value, investment return or detailed tax planning. Those questions require other specialists.

Pre-CPCV Legal Due Diligence provides a buyer-side legal file review. The buyer should proceed only when the evidence is sufficient for the next commitment, not merely because a sales timetable is moving quickly.## Check occupation, leases and third-party rights

Confirm whether the property is vacant, occupied by the seller, rented or used by another person. Request the relevant lease, licence or termination evidence where occupation exists. Depending on the location and characteristics of the property, statutory rights of preference or protected-area procedures may also require specific handling.

The buyer should not discover after the CPCV that possession, a tenant, a public notice or another third-party right affects the completion plan.

Use a findings matrix

A disciplined report records each issue, supporting document, risk level, responsible party and required contractual response. This makes it possible to distinguish a correctable document gap from a reason not to proceed and gives the CPCV drafter a precise list of conditions rather than a vague request for clean due diligence.