The short answer: yes, you need a permit. But don’t worry, it’s easy.
The question we get asked most before starting any bathroom renovation isn’t about tiles or budgets. It’s this: do I need any kind of permit to renovate the bathroom? And we understand. The idea of battling municipal bureaucracy before someone even removes the old bathtub can make you lose the will to renovate.
But here’s the good news: 95% of bathroom renovations only need a responsible declaration (declaracion responsable). A quick, cheap process you can sort out in one morning. You don’t need an architect, you don’t need a technical project, and it costs around €50 in fees. At the Urban Planning Office in Valencia’s Town Hall, on the Plaza del Ayuntamiento, you can file the responsible declaration in 10 minutes and start work the very next day.
What you do need to know is exactly which type of permit applies to your specific work. Because if you get it wrong — or worse, don’t file anything at all — you risk fines that can far exceed what the paperwork would have cost. And that’s not in anyone’s interest.
Responsible declaration: the permit you need for almost any bathroom renovation
The responsible declaration is the simplest process in the planning world. It’s not technically a licence: it’s a communication to the Town Hall in which you, as the property owner, declare that the work you’re going to do complies with current regulations and that you take responsibility for it.
When is a responsible declaration sufficient?
For the vast majority of bathroom renovations. Specifically, when the work doesn’t modify the building’s structure, doesn’t change the dwelling’s layout and doesn’t affect the facade or communal elements. According to the Land Planning, Urbanism and Landscape Act of the Valencian Community (LOTUP), minor interior renovation works are processed by responsible declaration.
In practice, this includes:
- Swapping the bathtub for a shower (the most common renovation)
- Replacing tiles, fixtures and taps
- Renewing the plumbing within the bathroom (as long as you don’t affect communal waste pipes)
- Updating the bathroom’s electrical installation
- Installing a new vanity unit, shower screen, mirror
- Waterproofing and retiling
- Painting, changing the floor, updating the lighting
In other words: a standard full bathroom renovation where everything stays within the four walls of the existing bathroom. If that’s your case — and it is for the majority of our clients — the responsible declaration is all you need.
What do you need to file it?
The process is straightforward. At Valencia Town Hall you can do it in person at the Urban Planning Office or online through the electronic headquarters. You need:
- Responsible declaration form (download from the council website or request at the counter)
- Photocopy of the property owner’s ID
- Brief description of the works (no project required, just an explanation of what will be done)
- Estimated budget for the works (the one your renovation company has given you)
- Payment of municipal fees (around €50 for minor works in Valencia; varies by municipality)
You don’t need plans, you don’t need an architect, you don’t need professional association approval. Fill in the form, pay the fee, submit the documents and you can begin works the day after submission. The Town Hall has a subsequent period to verify everything is correct, but you don’t need to wait for a response to start.
What if I don’t live in Valencia city?
The process is virtually identical in all municipalities across the Valencian Community. In Paterna, Torrent, Mislata, Burjassot, Gandia or Sagunto the procedure is the same: responsible declaration at the relevant town hall with similar documentation. Fees may vary slightly, but the concept doesn’t change.
Minor works licence: when you need it
Here things step up a level. A minor works licence is required when the renovation goes beyond replacing elements and begins to modify the dwelling’s interior layout or touch elements that affect the structure or communal services.
Examples that require a minor works licence
- Knocking down a partition to enlarge the bathroom by absorbing part of a hallway or adjacent room
- Relocating the toilet or shower from one side of the bathroom to the other (involves rerouting waste pipes and drains)
- Opening a new gap for ventilation or to connect two spaces
- Modifying communal services such as waste pipes, risers or general ventilation
If your bathroom renovation includes any of these interventions, you need a minor works licence. This involves:
- Technical project signed by an architect or building surveyor
- Submission to the Town Hall with all documentation (project, detailed budget, plans)
- Waiting for a decision: the Town Hall has up to one month to grant or refuse the licence (in practice they usually take 2–4 weeks in Valencia)
- Higher fees: the cost depends on the works budget, but usually falls between €200 and €600 including municipal fees and the ICIO (Construction, Installation and Works Tax)
- Technical supervision: you’ll need a qualified professional to oversee and certify the works
Is it worth enlarging the bathroom?
It depends on each case, but knocking down a partition to gain half a square metre can transform a tiny bathroom into a comfortable space. If you’re planning a renovation that includes a layout change, it’s best to consult us beforehand. Tell us about your project and we’ll advise on what permits you’ll need and how much that adds to the budget.
Major works licence: you don’t need it for a bathroom
Let’s make this clear so you don’t worry: a major works licence is never needed to renovate a bathroom. This type of licence is reserved for works affecting the building’s structure (pillars, load-bearing walls, floor slabs), for extensions to the built area or for changes of use of the building.
Renovating a bathroom, even with a layout change, doesn’t fall into this category. If someone tells you that you need a major works licence for your bathroom, be wary.
Summary table: type of work vs. required permit
| Type of bathroom work | Required permit | Approximate cost | Time to start |
|---|---|---|---|
| Swap bathtub for shower | Responsible declaration | ~€50 | Next day |
| Replace tiles and fixtures | Responsible declaration | ~€50 | Next day |
| Renew interior plumbing | Responsible declaration | ~€50 | Next day |
| Update electrical installation | Responsible declaration | ~€50 | Next day |
| Full renovation without moving walls | Responsible declaration | ~€50 | Next day |
| Knock down partition to enlarge bathroom | Minor works licence | €200–600 | 2–4 weeks |
| Relocate fixtures (moving waste pipes) | Minor works licence | €200–600 | 2–4 weeks |
| Open new gap in wall | Minor works licence | €200–600 | 2–4 weeks |
| Modify communal services | Minor works licence | €200–600 | 2–4 weeks |
| Alter building structure | Major works licence | Variable | Months |
The practical rule: if everything stays within the existing bathroom perimeter and you’re not knocking down walls, responsible declaration. If you’re moving walls or touching communal elements, minor works licence.
Step by step: how to file the responsible declaration in Valencia
So you’re crystal clear, here’s the actual process, no fuss.
Option A: in person
- Go to the Urban Planning Office at Valencia Town Hall (Plaza del Ayuntamiento, 1). Opening hours: Monday to Friday 8:30 to 13:30.
- Request the form for responsible declaration of minor works, or download it beforehand from valencia.es.
- Fill it in: your details, property address, description of works (“full bathroom renovation: replacement of tiles, fixtures, taps, interior plumbing and electrics”), estimated budget.
- Attach: photocopy of your ID and the renovation company’s quote.
- Pay the fees at the Town Hall cashier or with a payment slip at the bank.
- Submit everything at the registry. You’ll receive a receipt with the date and registry number.
- You can start work the next day. The responsible declaration authorises immediate commencement of works.
Option B: online
- Access Valencia Town Hall’s electronic headquarters.
- Search for “responsible declaration works” in the procedures search.
- You need a digital certificate or Cl@ve to identify yourself.
- Complete the online form, attach the scanned documents and pay fees electronically.
- You’ll receive the submission receipt by email.
In our experience, the in-person option is still the quickest for those without a digital certificate. Literally 10 minutes if you go prepared.
What happens if you do the work without a permit?
This is where it pays to take notice. Because many property owners — and some renovation companies, unfortunately — skip the process thinking “it’s just a bathroom.” And it can prove expensive.
Fines and penalties
Under Valencian planning legislation, carrying out works without the required notification or licence is considered a planning infringement. Penalties depend on the severity:
- Minor works without a responsible declaration: fine of €600 to €6,000 depending on the municipality and the scale of the works.
- Works requiring a minor licence carried out without one: fine of €6,000 to €60,000 and possible restoration order (meaning you undo what you’ve done).
Is it worth the risk to save yourself a €50 process? The numbers speak for themselves.
Problems when selling
If you sell your property and the buyer (or their bank during the valuation) detects undeclared renovations — for example, a layout change that doesn’t match the cadastral plans — they can demand you regularise the situation before completing the sale. That means technicians, fees and, in the worst case, redoing work. A headache that’s avoided with a €50 piece of paper.
Insurance
If you have a problem in the newly renovated bathroom — a leak causing damage to the neighbour below, for example — and your home insurance discovers the renovation was done without a permit, they can refuse to cover the damages. It’s a clause many policies include in the small print.
The residents’ association: rules you should know
Renovating your bathroom is your right as a property owner, but if you live in a residents’ community, there are cohabitation rules you should respect. They’re not permits as such, but breaching them can cause problems.
Working hours
Most municipal regulations in the Valencian Community set the following hours for residential works:
- Monday to Friday: 8:00 to 20:00 (in some municipalities, 8:00 to 21:00)
- Saturdays: 8:00 to 14:00 (in many municipalities, prohibited)
- Sundays and public holidays: prohibited
Additionally, your residents’ association may have stricter internal rules. Check the community regulations before agreeing the work schedule with your renovation company.
Rubble and lift use
Rubble removal is the responsibility of the company carrying out the work. It must be done in authorised skips, not in the domestic rubbish bins. In many buildings, the community requires that the lift be protected during the renovation (with wooden or cardboard panels) and that communal areas are cleaned daily.
At Reformarte, we handle all of this as part of the service. We protect communal areas, remove rubble with authorised skips and scrupulously respect the timetable. This is how we work step by step.
Notifying the community
Although you don’t need permission from the residents’ association to renovate your own bathroom (it’s a private element), it’s good manners — and avoids conflict — to notify the community president and your nearest neighbours. A message in the community WhatsApp group or a note on the entrance noticeboard: “We’ll be renovating the bathroom of flat 3B over the next two weeks. Apologies for any inconvenience.” It’s appreciated and smooths over any friction.
For more detail on obligations to the community, see our guide to renovating your bathroom in a residential community.
What if my renovation is more complex? We handle the permit
You don’t have to battle with the Town Hall or learn the planning regulations. At Reformarte, permit management is included in our service. Whether it’s a responsible declaration or a minor works licence, we handle the paperwork.
Our process
- We assess your renovation: during the first visit we identify exactly what type of permit you need based on what you want to do in your bathroom.
- We prepare the documentation: we fill in the forms, prepare the works description and, if a minor works licence is needed, coordinate with the building surveyor.
- We submit the application: we take it to the relevant Town Hall (Valencia, Paterna, Torrent, wherever your property is).
- We start when due: if it’s a responsible declaration, the next day. If it’s a minor works licence, when it’s granted.
Municipal fees are at your expense (it’s a tax, we can’t absorb it), but all the management is included in the budget. No surprises.
Calculate your budget with our online calculator and you’ll get a complete estimate that includes permit management. We also recommend reviewing the real breakdown of a bathroom renovation budget to know exactly what each line item includes.
Frequently asked questions about building permits for bathroom renovation
Can I start work the same day I submit the responsible declaration?
Technically, the responsible declaration authorises works from the moment of submission. However, most town halls recommend waiting until the following day so it’s registered in the system. In any case, you don’t need to wait for a decision: the responsible declaration doesn’t require prior approval.
What happens if my neighbour below complains about the work?
If you’re within the permitted hours and have filed the responsible declaration, your neighbour can complain but has no legal basis to stop the work. It’s a different matter if actual damage occurs (leaks, excessive vibrations), in which case the renovation company is liable through their public liability insurance. That’s why it’s essential to work with a company that has insurance, like us.
Do I need a permit if I’m only swapping the bathtub for a shower and nothing else?
Yes, even then. Although it’s a localised intervention, it involves plumbing work and in many cases masonry (fitting the shower tray, waterproofing). A responsible declaration is sufficient, costing around €50 and processed in minutes. Better to do it than risk a fine.
Does the renovation VAT include the permit fees?
No. Municipal fees are a separate tax paid directly to the Town Hall. They don’t form part of the renovation company’s invoice and no VAT applies to them. Regarding the VAT on the renovation itself, see our complete guide to VAT on bathroom renovations: 10% vs 21% to know exactly how much you’ll pay.
Does the responsible declaration expire? Is there a deadline to finish the work?
Yes. The responsible declaration usually has a validity period of 6 to 12 months depending on the municipality. If the work isn’t started within that period, it expires and you need to submit a new one. For a bathroom renovation lasting 7 to 15 days, this shouldn’t be any concern. Just bear in mind that if you plan the renovation well in advance, don’t submit the declaration too early.
A €50 piece of paper saves you thousands in problems
In summary: renovating your bathroom in Valencia in 2026 requires an administrative process. But it’s such a simple process that it shouldn’t take more than half an hour of your life. A responsible declaration, 50 euros, and off you go.
What you must not do is ignore it. The fines for working without a permit are disproportionate compared to the cost of the process, and the problems that can arise when selling the property or claiming on insurance aren’t worth the risk.
At Reformarte we handle everything: the permit, the work, the rubble and making sure your residents’ community has no reason to call you out. Calculate your budget with all costs included — permits, materials, labour, VAT — and start planning your renovation with complete peace of mind.
Got a particular case that doesn’t fit what we’ve described? Tell us about your project and we’ll advise you at no obligation. After more than 12 years renovating bathrooms in Valencia and the surrounding area, we handle the permits topic with our eyes closed.
Your new bathroom is just one form away.
