How to choose a builder in Portugal (and the traps to avoid)

Here's something most foreign buyers don't know: in Portuguese residential construction there is no mandatory certification for individual tradesmen. Anyone with a van and a logo can call themselves a builder. The flip side surprises people even more — a big, well-marketed renovation brand is not automatically safer. Plenty of the glossiest names in the sector are franchises: they sell the job, take their margin, and subcontract the actual building work to whoever is available.

Judge builders by buildings, not badges

Awards, seals and five-star ratings are marketing instruments in this industry, and many are easier to obtain than the public assumes. We've seen highly decorated companies leave jobs abandoned mid-renovation. Ignore the badges. Ask to see completed projects — real addresses, not photographs — and speak to the owners. A builder proud of their work will arrange it without hesitation. One who makes excuses has answered your question. It’s a fair test to put to anyone, us included: ask, and a good builder will happily point you at finished jobs and the people who paid for them.

Who you’re really hiring — the moves to watch for

I get called in two ways: before a job, to tell someone whether a builder is worth hiring, and after one, to work out what went wrong and who’s responsible — usually once the company that did it has gone quiet. After enough of the second kind you see the same handful of moves, and almost none of them are illegal. That’s exactly the problem. The first is the engineer who owns the website but won’t stand on the roof: a slick, professional builder site, and behind it an engineer with no building alvará who uses the brand to draw clients in, subcontracts the building out, and takes no responsibility for what happens on site. When the work fails, the engineer points at the subcontractor, the subcontractor has moved on, and you’re holding it. So ask three questions and notice if the answers differ: who holds the alvará, who will actually be on site, and whose name goes on the contract? Those can be three different people, and the gap between them is where your money disappears.

The second is subtler. You line up three or four “different” companies to quote and feel like you’re comparing the market — but I’ve seen clusters of polished builder websites, different names and logos, sometimes different cities, that route back to the same operator. You think you’ve got three competing quotes; you’ve got one operator quoting himself three times and letting you pick the price he was always going to charge. Before you trust a brand, find out who is actually behind it: the company, the people, the history — not just the homepage.

And you can’t trust the reviews, for two reasons that both favour the bad operator. Portugal has criminal defamation laws — injúria and difamação — so an unhappy customer who publicly names and shames a bad builder can find themselves on the wrong end of a legal complaint, and a great many simply stay quiet. The worst operators therefore look cleaner online than they are. Second, a glowing “resolution rate” on a complaints platform very often just means complaints time out and auto-close, not that anyone was helped. So read the content of the complaints, not the score at the top of the page. The pattern in the words is the truth; the rating is theatre.

Deposits: what's normal, and what makes you a mark

First, what's normal: deposits in Portugal are bigger than what UK or Australian buyers are used to, and that's legitimate — materials are expensive here, and the contractor carries those costs up front. A sizeable deposit on its own is not a red flag.

The trap is different: handing over a large sum — often in cash — to the first contractor who happens to be available, with nothing in writing. Do that and you're a mark. Most renovation firms here are small limited companies (Lda); when one fails mid-job, litigating the dispute routinely takes years, and by the end the company has often been dissolved with nothing left to recover. So vet the company before any money moves (the checks below take ten minutes), pay the deposit by bank transfer against a proper invoice and a signed contract, and tie the remaining payments to completed, inspected stages of work.

Keep your finance away from your builder

Renovation credit arranged at the point of sale by the contractor is convenient right up until the job stalls — then you're paying instalments on a half-finished house while the company that signed the contract disappears. If you need finance, arrange it independently, through your own bank, on your own terms.

Five checks you can run in ten minutes

Portugal actually gives you decent public tools for vetting a contractor — almost nobody uses them. Before you sign anything:

• Check their IMPIC licence (alvará) at impic.pt — the public register of licensed construction companies. A "renovation company" with no licence, or one limited to trivial works, is telling you something.
• Look them up on the corporate register. A company claiming twenty years of experience that was incorporated eighteen months ago with €5,000 of capital is a brand, not a builder.
• Check the registered activity matches the work. We've seen firms registered for industrial maintenance selling home renovations. The register doesn't lie; the website might.
• Read their complaint history on Portal da Queixa — and read the actual complaints, not the star rating or the badges. Look for abandoned jobs and deposit disputes; those patterns repeat.
• Ask who actually does the work and who signs the contract. If the brand on the van is not the company on the contract, understand exactly who is responsible when something goes wrong — because the contract is what counts.

And a sixth check worth making in person: ask for proof of liability insurance — and whether the people who'll actually be on your site are employed and insured by the company you're contracting. If an uninsured subcontractor is injured on your property, the problem can land at your door. A serious contractor answers that question without flinching; the other kind changes the subject.

A proper scope of works is your best protection

Most renovation disputes don't start with bad workmanship — they start with a vague quote. A one-page estimate for "remodelação geral" protects nobody. What you want is a detailed scope of works: what's being done, with which materials, in what sequence, paid on what milestones. It makes quotes comparable, keeps extras honest, and gives you something enforceable when memories differ.

What a proper contract looks like

The contract is where good intentions either become enforceable or evaporate. A serious one has the detailed scope of works attached as an annex, a payment schedule tied to defined milestones rather than dates, a stated programme with consequences for drift, and a written variations procedure — any extra priced and signed before the work happens, not negotiated from memory at the end. If the "contract" is one page with a price and a start date, you don't have a contract; you have a receipt for a donation.

Have someone on your side of the table

The single best protection is independent oversight — a builder who works for you, not the contractor, checking quality at each stage and signing off payments against actual progress. That's what we do. We scope the job before it's priced, bring in Portuguese trades we know and trust, and stay until handover. Read more about how we run construction projects, or talk to us before you sign anything — the cheapest time to fix a renovation is before it starts.

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