Photo: Diego Delso, CC BY-SA 3.0
How to find and vet a reliable builder in Valencia
There is no builder's licence to look up here, only a public register of construction firms. What protects you is the quote, the contract and the payment schedule, so this is how to read all three.
In Spain there is no builder's licence that proves a reformista is legitimate, which changes how you have to vet one. Firms taking on construction work are meant to be inscribed in the public Registro de Empresas Acreditadas (REA), which anyone can check online, but it records capacity and workplace-safety requirements, not the quality of the work or the fairness of a price.
In several countries the first move is to look up a licence number. That instinct does not transfer. What exists here instead is a set of verifiable facts that a real business will have and an improvised one will not, and a quote structure that makes an honest contractor easy to distinguish from a vague one.
The market divides roughly in two. Empresas de reformas are companies that take on the whole job and coordinate the trades under one contract and one point of accountability. Individual gremios, the plumber, the electrician, the tiler, work directly for you and are cheaper on paper because you become the project manager.
Neither is wrong. Managing your own trades genuinely saves money if you speak the language, live nearby and can be on site. If you are doing this from abroad or in a language you are still learning, the company route is buying you coordination, and that is worth paying for.
What to verify before you take a quote seriously
None of these is exotic and all of them are answerable in an email. A contractor who is evasive about any of them has told you something.
A real fiscal identity
Ask for the CIF or NIF the business invoices under, and check the invoicing name matches the name on the quote. A quote from one entity and an invoice from another is the beginning of a problem, not a formality.
Liability insurance
Ask for a current certificate of responsabilidad civil and read the cover amount. If a burst pipe floods the flat below, this is the document that decides whether the neighbour's claim lands on your contractor or on you.
Social security registration for the crew
The people on site should be registered. Undeclared labour is cheaper and it moves the accident risk onto you as the person whose property they are working in.
References you can actually reach
Ask for two recent jobs in Valencia of a similar scope and speak to those owners. Photographs prove somebody can finish a bathroom, not that they finish on time or answer the phone in month three.
Willingness to name the technician
If the works need a project, ask who signs it. A contractor who works with a regular architect or technical architect will name them immediately; one who is vague about it may be planning to file the job as something it is not.
A written guarantee
Ask what is guaranteed, for how long, and by which line of work. Flooring, electrics, plumbing, tiling and paint do not all carry the same realistic guarantee period and a serious quote says so.
What a real presupuesto contains
A Spanish works quote is organised into capítulos, the chapters of the job (demolition, masonry, flooring, installations, painting), and inside each chapter into partidas, the individual units of work.
Each partida should show:
- a technical description
- a unit of measurement: square metres for tiling, linear metres for skirting, units for sockets
- a quantity
- a unit price
A chapter total with no measurements underneath cannot be compared against anything.
A serious quote also states:
- the brand and model of the key materials
- the timeline
- the payment terms
- the guarantee
- what is excluded
Read the exclusions twice. The gap between two quotes often sits there rather than in the prices, and a contractor who writes exclusions down intends to be held to the rest.
Photo: 19Tarrestnom65, CC BY-SA 4.0
Payment schedules and what is normal
Reform work in Spain is paid in stages, and an upfront payment is standard rather than suspicious. The sector norm for the initial anticipo sits in the range of twenty to thirty percent of the total.
Tie each payment to an objective milestone rather than a date. A structure common in the trade runs:
- 20 percent on signature
- 35 percent when work starts, once the permit is in place
- 35 percent against measurable progress
- 10 percent on delivery
The final retention is the important part. Holding a meaningful percentage until the job is finished and inspected is what gets the last ten percent of the work actually done, and that last ten percent is where abandoned reforms are abandoned.
Pay by traceable bank transfer against invoices, always. A cash discount in exchange for no invoice removes your guarantee, removes your evidence in a dispute, and leaves you unable to prove the works were legal when you sell.
Invoicing, IVA and why the paperwork protects you
Your invoices should show the works, the base amount and the IVA separately. For qualifying home reforms the rate is ten percent rather than twenty-one, and the conditions for that are covered in detail on our cost guide.
Keep every invoice. They are the evidence that the work was done, by whom and when, and they matter twice: once if something fails and you need the guarantee, and again when you sell and a buyer's lawyer asks what was done to the property.
Invoices are also what substantiate the declared budget behind your permit filing. A works budget declared to the city that bears no relationship to the invoices is an inconsistency that is easier to avoid than to explain.
The one rule that matters most
No contract, no invoices, no guarantee. Every protection described on this page runs through paper, and a job done off the books has none of them, however good the price looked.
Red flags when hiring a builder: when to walk away
A quote with no measurements
A single price with no partidas and no quantities cannot be compared, cannot be enforced and will grow. This is the most common warning sign and the easiest to ignore because the number looks good.
Pressure for a large cash deposit
An anticipo of twenty to thirty percent by transfer is normal. A demand for half the job in cash before anyone has been on site is not, and no legitimate business needs it.
Refusing to put the timeline in writing
Somebody who will not commit a start date and a duration to paper is reserving the right to disappear onto a bigger job. Written dates with consequences attached are what stop that.
A price far below the others
When one quote sits dramatically under the rest on the same scope, it is usually missing work, missing tax, or planning to find both later as extras. Compare what is inside before you celebrate.
How to choose a builder in Valencia, step by step
- 1
Write the scope yourself first
Put the job in writing, room by room, before you contact anybody. Contractors quoting against your document rather than their own guess produce comparable numbers.
- 2
Shortlist three and check the basics
Fiscal identity, insurance certificate, two reachable references in Valencia. Do this before the site visits, so you are not emotionally invested in someone who fails the check.
- 3
Compare partida by partida
Lay the three quotes side by side at chapter level and find where they differ. The differences are the real conversation, and they usually reveal what one of them has quietly left out.
- 4
Sign a contract, not a quote
The contract should carry the scope, the price, the milestone payment schedule, the timeline, the guarantee and the exclusions. A signed quote with none of that is a hopeful email.
Planning a renovation in Valencia?
Tell us about the job: a kitchen, a bathroom, a full renovation or an office fit-out. We check which permits and paperwork the work needs, then put you in touch with local builders or an architect for quotes.
Language barriers when hiring a builder in Valencia
Most of this trade operates in Spanish and, in Valencia, often in Valencian. Quotes arrive in Spanish, site conversations happen in Spanish, and the moment something goes wrong the conversation gets faster and more technical, not slower and clearer.
If you are not comfortable at that level yet, that is a solvable problem rather than a reason to postpone the reform. Having someone read the presupuesto with you before you sign is the cheapest intervention available in this whole process.
It is also worth saying plainly that most reformistas in Valencia are perfectly honest. The vetting on this page is not about suspicion, it is about making sure the honest ones can be told apart from the improvised ones at the point where it still costs nothing.
Official sources
- Ley 37/1992 del IVA - the reduced 10 percent rate for home renovation, art. 91, BOE
- Registro de Empresas Acreditadas (REA) - purpose and public consultation of registered construction firms, Ministerio de Trabajo (Spanish only)
- REA in the Comunitat Valenciana - any person can request a registration certificate, Generalitat Valenciana (English version)
Resident in Valencia since 2016. Founder of BeTranslated. 25+ years in translation, interpretation and multilingual SEO.
Reviewed 4 October 2026 by Michael Bastin