Portugal places no legal requirement on anyone to inspect a property before it is sold, and since Decreto-Lei n.º 10/2024, de 8 de janeiro no municipal authority checks the building against its paperwork before the deed. A buyer signing from another country inherits both gaps at the escritura. The practical question is narrower than it sounds: a photograph is not a weak substitute for a viewing, it is a different instrument, and some categories of defect sit outside what any photograph can record no matter how many are supplied. This guide sets out which ones, why the season changes the answer, and what evidence a remote buyer can ask for instead. The buyer protection guide covers the structural gaps in the system; this one covers the evidence problem.
Table of Contents
- What does a listing photograph actually record?
- Which defects are invisible to a camera by their nature?
- Why does the time of year change what a photograph shows?
- What can you ask for instead, from abroad?
- What still requires someone physically present?
- Frequently Asked Questions
What does a listing photograph actually record?
A photograph records three things only: a surface, a chosen frame, and a single moment. The seller controls all three.
None of that implies bad faith, and the useful version of this argument avoids the accusation. An agent photographing a flat in Lisbon in July is doing an ordinary job, competently, and the result is still a set of images that carries almost no information about condition.
Surface. A camera captures the outermost layer. In Portuguese stock that layer is usually paint, plaster, tile or render, all of which are applied over the thing a buyer needs to know about.
Frame. Every photograph is a decision about what to leave out. A room has four corners and a photograph typically shows two of them.
Moment. A photograph is one instant. Several defects in Portuguese buildings are not constant; they appear under conditions that were not present when the shutter opened.
Something worth separating out, because it is the more common failure and it is not this article's subject. Unlicensed works are frequently visible in listing photographs. An enclosed balcony, an extension, a converted basement: these often sit in plain view and stay undetected because nobody compares the image against the licence the building was granted. Our guide to spotting illegal extensions covers that case. The defects below are the opposite problem. They do not appear in the photographs at all.
Which defects are invisible to a camera by their nature?
Moisture, electrical condition, structural behaviour and below-ground drainage sit behind finishes, which is where a photograph stops.
Five categories, and the distinction in each is between what is shown and what is load-bearing.
Moisture behind finishes. A wall reads as dry in an image if its surface is dry. Capillary rise, lateral infiltration through a retaining wall and condensation from inadequate ventilation all produce damage that is developing behind the finish long before it reaches it. According to INE ICOR 2025, 32.1% of the Portuguese population lived in dwellings with damp or infiltrations, rising to 41.8% among the population at risk of poverty. The damp and mould guide covers the diagnosis.
Electrical condition. A photograph of a consumer unit shows a consumer unit. It does not show earthing arrangements, differential protection, circuit loading, or whether the installation behind it is one system or four partial renovations layered under one board. Residential installations in Portugal sit outside mandatory periodic inspection under Decreto-Lei n.º 96/2017, de 18 de agosto, so no certificate exists to request in its place.
Structural behaviour. Cracking that matters is distinguished from cracking that does not by pattern, width progression and location relative to the structural system, none of which a single image resolves. Portuguese stock varies enormously by build era, and the structural risk by build era guide sets out what each period fails at.
Drainage and everything below ground. Drains, the condition of a septic system on rural property, and water ingress paths beneath a ground floor slab are outside the frame by definition.
The documentary layer. No photograph reconciles the area recorded in the Caderneta Predial Urbana (tax register) against the area in the descrição predial at the Conservatória do Registo Predial (Land Registry), and those two frequently disagree. Harmonisation is waived only where the difference against the larger figure stays inside 10% for urban property. Above that, correction is required before a clean sale. The due diligence guide covers the registry problem in full.
To put the scale on it: INE, Censos 2021 records 35.8% of Portuguese buildings as needing repair, split 21.8% light, 9.4% medium and 4.6% deep, with 14% carrying serious condition problems. None of that survey looks at conformity against what was licensed, which is a separate question again and equally invisible.
Why does the time of year change what a photograph shows?
Portuguese damp is seasonal in expression, so a property photographed in August can present as sound and read differently in February.
Most Portuguese listing photography is taken in good conditions, for the obvious reason that it produces better images. That is also the condition under which the largest category of defect in the national stock is least visible.
Rising damp, lateral infiltration and condensation all express themselves after sustained rain and during the cold months, when heating runs and ventilation drops. A ground floor or semi-basement unit in Porto or Lisbon photographed in summer can show nothing at all and carry a well-established problem.
The practical consequence for a remote buyer is that the date the photographs were taken is information, and it is information a seller will usually supply without hesitation because the question sounds administrative. A set of images from the previous summer, offered for a property listed in January, is not evidence of concealment. It is a reason to ask for something more recent.
What can you ask for instead, from abroad?
Specific, named, dated evidence is answerable remotely. A request for more photographs is not.
The difference between a useful request and a useless one is specificity. "Could you send more pictures" produces more of the same instrument. Naming the thing to be photographed changes what the instrument records.
Dated images of named locations. The consumer unit with its cover off, the underside of sinks and the area behind any washing machine, the junction between roof and wall on each elevation, the lowest point of any external wall at ground level, and the interior of any basement or storage area. Ask for the date each was taken.
A walkthrough recorded to instruction rather than a produced tour. A continuous video, taken at walking pace, with the camera held toward the floor and wall junction rather than into the room. A produced video tour is a marketing asset and selects its frames the same way stills do.
The documents, which are the part that does travel well. The licença de utilização (use licence), the Caderneta Predial Urbana, the certidão permanente from the Land Registry, and the certificado energético required under Decreto-Lei n.º 101-D/2020, de 7 de dezembro, whose absence carries fines from €250 to €3,740 for individuals. These are the elements a remote buyer can genuinely verify at distance, and they are also the elements that establish what should be on site.
The gap between the documents and the images is the whole question. Once both sets exist, the comparison is possible, and it is the comparison rather than either half that produces a finding.
From 1 October 2026, under Decreto-Lei n.º 108/2026, de 29 de maio, whose entry into force was deferred to that date by Decreto-Lei n.º 155-B/2026, de 31 de julho, the document titling the transfer must mention the status of the urbanistic title declared by the seller. That adds a declaration. It adds no verification, and no part of it involves anyone looking at the building.
What still requires someone physically present?
Measurement, instruments, access and the comparison of built against licensed all require a person on site, and none of them has a remote substitute.
Four things fall outside what any quantity of supplied evidence can settle.
Measurement. Whether the built area matches the registered area is answered with a tape and a plan, not an estimate from a photograph.
Instruments. Moisture content in a material is read with a meter. Thermal behaviour of an envelope is read with a camera that does not record visible light. Both distinguish an active problem from a historic stain, which is the distinction a buyer actually needs.
Access. Someone has to open the consumer unit, look into the roof void, lift an inspection cover and get behind the appliances.
The comparison. Somebody has to hold the approved drawings against the building as constructed. This is the one that matters most under the current regime, because since 1 January 2024 no public authority performs it before a sale completes, and the liability transfers with the property.
If a defect surfaces after completion, the position is governed by the hidden defect regime: Article 913.º of the Código Civil gives the remedy, Article 916.º gives one year from becoming aware to notify, Article 917.º gives six months from that notification to bring the action on an ordinary resale, and Article 342.º n.º 1 places the burden of proof on whoever invokes the right. Proving a defect predated the deed, without a dated technical record from before it, is the part that fails. Unauthorised works carry their own exposure, with RJUE fines running from €498.80 to €99,759.58 for individuals and reaching €249,398.95 for companies.
An InspectOS pre-purchase inspection sends an engineer registered with the Ordem dos Engenheiros to the property, measures, instruments and opens what needs opening, compares the result against the licence and the registry, and returns a bilingual report within 48 hours with the engineer's cédula number identified. Our guide to what a property condition report contains sets out the deliverable. For a buyer who cannot attend, that report is the viewing.
Need the document and valuation picture before the site visit? RealOS reads the legal and registry position without attending the property. → realos.pt
Frequently Asked Questions
Can a video tour replace a viewing when buying from Portugal abroad?
A produced video tour selects its frames the same way still photographs do, so it adds coverage rather than a different kind of information. A continuous walkthrough recorded to your instruction is more useful, particularly if the camera is held toward wall and floor junctions. Neither reaches the categories that sit behind finishes or below ground.
What documents should I ask for before making an offer on a Portuguese property?
The licença de utilização, the Caderneta Predial Urbana, the certidão permanente from the Conservatória do Registo Predial, and the certificado energético. These verify at distance, which photographs do not, and they establish what should be present on site so the two can be compared.
Does the 1 October 2026 change mean somebody now checks the property for me?
No. Decreto-Lei n.º 108/2026 requires the document titling the transfer to mention the status of the urbanistic title, in most cases as declared by the seller. It creates a declaration and no inspection, and the notary performs no physical check of the building either before or after that date.
I am buying in the Algarve and cannot travel before the CPCV. What is the minimum?
Get the comparison between the built property and its paperwork done before the promissory contract (CPCV) is signed, because the deposit is committed at signature and the inspection window closes there. A report produced while the price is still open is also the document that establishes condition at a date, which matters later if a defect surfaces.
Are photographs useless for assessing a Portuguese property?
They are useful for what they record, which is layout, finish level, orientation and the presence of visible alterations. The error is treating an absence of visible defects in a photograph as evidence that none exists, when the categories that carry the highest cost in Portuguese stock are the ones a camera cannot reach.
Conclusion
A remote purchase is not a worse version of an ordinary purchase. It removes one specific instrument, physical presence, and the market has no substitute for it because there is no mandatory condition diagnostic in Portugal to fall back on.
What a buyer abroad can do is separate cleanly the evidence that travels from the evidence that does not. Documents travel. Photographs travel badly and are frequently misread as evidence of condition. Measurement, instruments, access and the comparison of built against licensed do not travel at all, and since January 2024 no public authority performs the last of them before completion.
A pre-purchase inspection closes that specific gap and returns a dated document while the price is still negotiable. Against RJUE exposure reaching €99,759.58 for an individual owner, and a sinal committed at CPCV signature, it is a small line in the purchase.
→ Book a Pre-Purchase Inspection · get a quote at inspectos.pt/en/home-inspections
Updated September 2026 | Reviewed by the InspectOS engineering team, engineers registered with the Ordem dos Engenheiros | InspectOS Portugal · Legal position verified 17 September 2026
Sources: Decreto-Lei n.º 10/2024, de 8 de janeiro · Decreto-Lei n.º 108/2026, de 29 de maio · Decreto-Lei n.º 155-B/2026, de 31 de julho, Diário da República n.º 147/2026, 5.º Suplemento, Série I · Decreto-Lei n.º 101-D/2020, de 7 de dezembro · Decreto-Lei n.º 96/2017, de 18 de agosto · Código Civil, Articles 913.º, 916.º, 917.º and 342.º · RJUE (Decreto-Lei n.º 555/99, de 16 de dezembro), Art. 98 · Código do Registo Predial, Art. 28.º-A · INE, Censos 2021 · INE, ICOR 2025 · Ordem dos Engenheiros · Diário da República.