A snagging list handed over at completion and met with silence is the most common new-build complaint in Portugal, and the fear attached to it is usually the wrong one. Owners believe the guarantee is draining away while the developer stalls. Under Decreto-Lei n.º 84/2021, de 18 de outubro, the guarantee periods suspend from the moment the consumer communicates the non-conformity, so a defect properly notified does not expire while it sits unanswered. What does erode is proof: site conditions change, other trades work over the evidence, and the argument about what the property was like at delivery gets harder every month. The new build snagging inspection guide covers the inspection itself. This guide covers what happens after the list exists and nobody acts on it.
Table of Contents
- Why do developers let snagging lists go quiet?
- Is your warranty actually running out while they stall?
- What makes a defect notice count in Portugal?
- What happens when the developer blames how you use the property?
- What leverage exists outside a courtroom?
- Where does a construction defect dispute actually go?
- Who you pursue depends on whether the fault is design or execution
- Frequently Asked Questions
Why do developers let snagging lists go quiet?
Stalling costs a developer very little in the short term, because the buyer has already paid and the remaining pressure is reputational rather than financial.
The commercial position reverses at completion. Before the deed, the developer wants the money and the buyer holds the timing. After the deed the money has moved, the keys are handed over, and the outstanding items are a cost centre with no revenue attached.
What follows is rarely a refusal. It is a sequence of partial responses: an acknowledgement, a site visit that does not happen, a subcontractor who will come next month, a request to re-send the list in a different format. Each step is individually reasonable and the aggregate effect is delay.
Two structural features make it worse in Portugal. Projects are often built through a single-purpose company, so the entity on the contract may hold few assets and have no continuing business to protect. And the work is usually executed by layered subcontractors, which lets a developer route a complaint into a chain that has already been paid and dispersed.
None of that changes the owner's legal position. It changes what the owner has to do to act on it.
Is your warranty actually running out while they stall?
Decreto-Lei n.º 84/2021 suspends the guarantee period from the date the consumer communicates the non-conformity, and for any period the property cannot be used.
This is the provision that answers the anxiety, and it is the one most owners have never been told about.
For a consumer buying from a professional seller, DL 84/2021 gives ten years on structural construction elements and five years on other non-conformities, counted from delivery. Those periods do not simply run down in the background. They suspend from the date the consumer communicates the non-conformity to the professional, and they suspend again for the time the consumer is deprived of use of the property.
The practical consequence is direct. A defect notified in month eight of year one does not quietly time out because the developer spent two years not answering. The clock stopped when the notice landed.
Two conditions sit behind that sentence and both matter. The suspension attaches to the communication, so an undated conversation on site does nothing. And it attaches to the specific non-conformity communicated, not to the property in general, which is why a list that describes items precisely protects more than a list that says the finishes are poor.
Where the seller is not a professional, or where the buyer is pursuing the builder directly rather than the seller, different periods apply and they are not interchangeable. The new-build warranties guide sets out the two regimes and keeps them apart, which is the single most common error in this area.
What genuinely degrades with time is evidence. Render gets patched, a terrace gets recoated, a neighbouring unit's works disturb the same junction, and the question of what the property was like at delivery becomes a matter of competing recollection.
What makes a defect notice count in Portugal?
A defect notice works when it is dated, delivered by a method that proves receipt, and describes each item specifically enough to be identified later.
Portuguese practice for a denúncia de defeitos under DL 84/2021 is a registered letter with acknowledgment of receipt, the carta registada com aviso de receção. Email is used, and an email carrying delivery and read confirmation is defensible, but the registered letter removes the argument entirely.
Content decides how much the notice is worth two years later. Four things belong in it.
Each defect described as a discrete item, located in the property and stated in physical terms. "Water ingress at the junction between the terrace slab and the north wall of the second bedroom" survives scrutiny. "Damp problems" does not.
Dated photographic evidence of each item, taken and retained with the file rather than sent alone.
An explicit statement that this is a denúncia of non-conformities under DL 84/2021, so the communication cannot later be characterised as a courtesy note.
A requested remedy and a deadline. DL 84/2021 sets no hierarchy of remedies for immovable property, so the owner may seek repair, a proportional price reduction, or termination in serious cases. Naming the remedy makes the later position consistent.
Keep the acknowledgment slip. The date on it is what suspends the period, and it is the one piece of paper the developer cannot dispute.
What happens when the developer blames how you use the property?
Under the consumer regime the developer carries the burden of proving that a defect appearing within the guarantee period was caused after delivery.
The standard response to a persistent complaint is attribution: condensation caused by insufficient ventilation, cracking caused by an owner's alterations, a failing seal caused by cleaning products. Sometimes that is correct. Often it is a way of moving the argument from construction to conduct.
DL 84/2021 places the presumption the other way. A non-conformity appearing within the guarantee period is presumed to have existed at delivery, and the professional must prove otherwise. That reversal is the single strongest feature of the consumer regime, and it is why establishing that the seller acted as a professional matters so much.
The presumption helps and it does not win on its own. What settles these disputes is an independent technical report, a peritagem, produced by an engineer with no relationship to the developer. The report does two things a homeowner cannot: it characterises the mechanism, distinguishing a construction fault from a use or maintenance fault, and it dates and locates the finding so the account cannot drift.
Damp is where this fight happens most often, because condensation and infiltration produce similar staining and have completely different owners. The damp and mould inspection guide sets out how the distinction is established with hygrometry and thermal imaging. The property condition report guide covers what the deliverable contains and why the format matters if it is ever read by anyone other than the owner.
One point of sequencing. A report commissioned after a developer has already attributed the defect to misuse is worth less than the same report commissioned before, because the developer's account is on the record first and the report reads as a response to it.
What leverage exists outside a courtroom?
Three regulators hold powers over a developer that a private owner does not, and each responds to a formal complaint rather than to correspondence.
Litigation is slow and most owners do not want it. The routes below run in parallel with a defect notice and cost far less.
IMPIC and the construction licence. The Instituto dos Mercados Públicos, do Imobiliário e da Construção licenses and supervises construction firms under Lei n.º 41/2015, and operates a formal complaint channel, the canal de denúncia. On sanctioning a company IMPIC can impose accessory measures including prohibition of activity and suspension of permits, certificates and registrations, which includes the alvará. A developer with projects still to sell has a strong interest in an unblemished registration.
The professional orders. The diretor de obra and the diretor de fiscalização carry personal technical and disciplinary responsibility for the work, and are registered with the Ordem dos Engenheiros or the Ordem dos Arquitectos depending on their qualification. A disciplinary complaint goes to the order rather than to the developer, and where fault is established their professional civil liability insurance becomes relevant. This route reaches individuals who are usually far more responsive than the company.
The Câmara Municipal. Where the built work does not match the licensed project, the municipality can inspect. A participação filed by an owner or by the condominium can trigger that inspection, and the municipality can withhold or block outstanding licences on the development. Under the Regime Jurídico da Urbanização e Edificação the promoters and owners, the authors of the project and the building directors can be jointly responsible for work executed without an urbanistic title or in non-conformity with one.
A note on that last point. The RJUE is being consolidated by Decreto-Lei n.º 108/2026, de 29 de maio, in force 1 October 2026, and article numbering shifts with it. Cite the diploma rather than an article number until the consolidated text is published and read.
Money still held. Where a retention was negotiated into the contract, unreleased funds remain the most direct pressure available. Retention is a negotiated mechanism in Portugal rather than a statutory one, and the mechanics sit in the snagging inspection guide.
Where does a construction defect dispute actually go?
Arbitration centres and the Julgados de Paz resolve small and mid-value property disputes in months, while ordinary civil courts commonly take years.
Route choice changes the timeline more than the merits do.
Julgados de Paz handle small-value disputes with a competence ceiling of €15,000, raised from €5,000 by Lei n.º 54/2013, and resolve property matters in about two and a half months on average. Appeal is possible above €2,500.01.
Arbitration centres supported by the Ministry of Justice run roughly two to three months, with a twelve-month cap. Construction and consumer disputes are routed through consumer or voluntary arbitration centres, or through an arbitration clause written into the contract. One correction worth carrying: CAAD is the tax arbitration centre, and it should not be assumed to have competence over a building defect.
Ordinary civil courts are materially slower. First-instance defect litigation commonly runs multiple years before any appeal to a Tribunal da Relação, and no current national average is published here because the figure moves.
Two consequences follow. An arbitration clause is worth negotiating into a purchase contract before signing rather than after a dispute exists, which is one of several reasons the pre-contract inspection guide treats the contract stage as the decisive one. And a claim sized just above the Julgados de Paz ceiling deserves a deliberate look, because the difference between €15,000 and €15,500 can be the difference between ten weeks and several years.
Document-level verification of the developer and the project runs in parallel and answers different questions. RealOS gives the legal and valuation picture from the records before a physical inspector visits. → realos.pt
Who you pursue depends on whether the fault is design or execution
A defect caused by a design error reaches the project author, while a defect caused by poor execution reaches the builder, and the two carry separate insurance.
Owners tend to treat the developer as the only target. The chain is wider.
Where the fault sits in the design, in specification or detailing, liability runs to the autor do projeto, the architect or engineer who produced it. Where the fault sits in execution, the work departed from a sound design, and it runs to the empreiteiro. Both carry professional or corporate liability separate from the developer's own position, and both are reachable where the developer's company is not.
That last point is the reason the distinction matters commercially rather than academically. Under Código Civil Art. 1225.º a third-party acquirer can act directly against the builder for defects in a building intended to last, which is the principal route around a developer that has dissolved or become insolvent. The deadlines under that article differ from the consumer regime and the two must not be merged.
Establishing which category a defect falls into is a technical question and it is answered by inspection, not by correspondence. What an independent engineer produces is a characterisation of the mechanism, and the mechanism is what points at the responsible party. The inspection standards guide covers what an Ordem dos Engenheiros registration means and what it does not.
Frequently Asked Questions
Does the warranty clock keep running while the developer stalls?
No, not for a defect that has been formally communicated. Decreto-Lei n.º 84/2021 suspends the guarantee period from the date the consumer communicates the non-conformity to the professional, and for any period during which the property cannot be used. The suspension attaches to the item communicated rather than to the property generally, which is why a specific, dated notice protects more than a general complaint.
Does an email count as a formal defect notice in Portugal?
An email with delivery and read confirmation is defensible, and a registered letter with acknowledgment of receipt removes the argument entirely. The point of the formality is the date and the proof of receipt, since that is what suspends the guarantee period. Where a dispute is already likely, use the registered letter and keep the acknowledgment slip with the file.
Can the developer blame the defects on how the property has been used?
The developer can argue it and carries the burden of proving it. Under the consumer regime a non-conformity appearing within the guarantee period is presumed to have existed at delivery, so the professional must show the cause arose afterwards. An independent technical report that characterises the mechanism is what usually settles the question, and it is stronger when commissioned before the developer has put an account on the record.
Is it worth complaining to IMPIC about a developer?
It is worth doing where the complaint is substantiated and put formally through the complaint channel. IMPIC supervises construction firms under Lei n.º 41/2015 and can impose accessory measures on sanctioning a company, including prohibition of activity and suspension of the alvará. A developer with units still to sell has a commercial interest in its registration that ordinary correspondence does not touch.
How long does a construction defect dispute take in Portugal?
Route decides it. Julgados de Paz resolve property disputes in about two and a half months on average, within a €15,000 competence ceiling. Ministry-supported arbitration centres run roughly two to three months with a twelve-month cap. Ordinary civil courts commonly take multiple years at first instance before any appeal.
Conclusion
A snagging list that goes unanswered is a proof problem before it is a legal one. The guarantee does not drain away while a developer stalls, provided the defect was communicated in a form that fixes the date. What drains away is the ability to show what the property was like at delivery, and that loss is permanent.
Three actions hold the position. Put the denúncia in writing with proof of receipt and item-level description. Get an independent characterisation of the mechanism before the developer's account of it is the only one on record. Use the regulators, because a formal complaint reaches a developer in ways that correspondence does not.
An InspectOS Snagging Inspection produces exactly the instrument these disputes turn on: each finding located, photographed, dated and classified, in a bilingual report signed by an engineer whose Ordem dos Engenheiros registration number appears in the document. Set against a ten-year structural liability that only survives if the defect can be evidenced, the report is the part of the claim that cannot be reconstructed later.
→ Book a Snagging Inspection · get a quote at inspectos.pt/en/home-inspections
Updated September 2026 | Reviewed by the InspectOS Engineering Team, Ordem dos Engenheiros licensed | InspectOS Portugal · Legal position last reviewed 9 September 2026
Sources: Decreto-Lei n.º 84/2021, de 18 de outubro · Código Civil, Arts. 342.º e 1225.º · Lei n.º 41/2015, de 3 de junho · Lei n.º 54/2013, de 31 de julho · Decreto-Lei n.º 555/99, de 16 de dezembro (RJUE) · Decreto-Lei n.º 108/2026, de 29 de maio · Decreto-Lei n.º 10/2024, de 8 de janeiro · Instituto dos Mercados Públicos, do Imobiliário e da Construção · Ordem dos Engenheiros · Ordem dos Arquitectos · Direção-Geral da Política de Justiça