Do I need a permit for home renovations?
Depends on the work: it may be exempt, need prior notice, or need a licence. The basis is the RJUE (DL 555/99), simplified by the Urban Simplex (DL 10/2024). Interior conservation, repair or minor alterations that don't touch structure, roof, facade or use are exempt (no licence, no prior notice). Many alteration works became prior notice, and can start straight away with technical-responsibility declarations. The licence (alvará) remains for new construction, major extensions and heritage areas. Any work touching the facade, roof, structure or common parts needs condominium approval (a majority representing 2/3 of building value). In short: it depends on the scope.
📋 The rules
- Interior conservation/repair: exempt
- Many alterations: prior notice (Simplex)
- New construction/extension/heritage: licence
- Facade/structure/common parts: condominium approval
- Condominium: majority of 2/3 of value (art. 1425)
🔓 Exceptions
- Heritage zones (ARU, classified buildings): licence and opinions
- Tacit approval doesn't legalise an illegal project
- Interior works affecting common elements need consent
⚠️ Penalties & fines
Doing works without the proper control (art. 98 of the RJUE) is an offence: for an individual, a fine of €500 to €200,000; for a company, €1,500 to €450,000. Paying the fine doesn't excuse legalisation or demolition, and there can be embargo and administrative possession. Beware a myth: "since the 2024 Simplex I don't need anything" is false — the Simplex broadened exemptions, but new construction, structural/extension works and heritage zones remain subject to control, and condominium approval applies whenever common parts are touched. And don't import Brazil's "alvará da Prefeitura" — the framework is the national RJUE. Before works: check with the municipality which regime applies and arrange condominium approval if needed.
📎 Official sources
❓ Frequently asked
Do I need a permit for home works?
It depends on the work. Interior conservation, repair or minor alterations, which don't touch the structure, roof, facade or use, are exempt from a licence and prior notice. Many alteration works now require a prior notice to the municipality, and new construction or major extensions require a licence.
What changed with the Urban Simplex?
The Urban Simplex, in force since 2024, simplified procedures, broadening exemptions and replacing many licences with prior notice, which lets the work start earlier, with the technicians' responsibility declarations. But it didn't remove control: new construction and structural or heritage-area works still require a licence.
Do I need condominium approval?
Yes, whenever the work affects the facade, roof, structure or other common parts of the building, or alters its architectural line, such as enclosing a balcony or placing air conditioning outside. These innovations need assembly approval, by a majority representing two-thirds of the building's total value.
What's the fine for works without a permit?
Doing works without the proper control is an offence, with a fine of €500 to €200,000 for individuals and €1,500 to €450,000 for companies. Beyond the fine, you may be required to legalise the work or even demolish it, and there can be an embargo. Paying the fine doesn't excuse the regularisation.
Can I start the work as soon as I submit the prior notice?
In many cases, yes. With the Simplex, the prior notice generally lets you start the work right after submission, with the technicians' responsibility declarations, without waiting for municipal approval. It's important, though, to ensure the project complies with the rules, as liability falls on the technicians who sign it.
🔎 Common searches
What people search to land here:
- “home works permit portugal”
- “exempt works prior notice”
- “urban simplex 2024”
- “condominium approval facade works”
- “works without permit fine”
- “structural works licence”