Full permit
The most complete prior-control route, with municipal appraisal of the architectural design and the engineering packages. The typical path for a new permanent dwelling on land requiring full appraisal.
Legal guide
Permitting modular homes in Portugal
Being modular does not exempt you from a permit. Here is what changed under the 2026 planning regime, which procedure applies to your case, and the real risks of installing without a title.
What changed under the new regime
Portugal's new planning and building regime was approved by Decree-Law 108/2026 of 29 May, and most of its provisions entered into force on 3 August 2026. Among the changes is the repeal of the former article 1-A, which expressly regulated permanent modular construction.
Many people read that repeal as an exemption. It is not. The new article 2 defines a building as work intended for human use, or work incorporated into the ground with a permanent character, regardless of the construction system used. In other words: modularity lost its dedicated provision precisely because it is now treated like any other construction.
What determines the procedure
The relevant question is not «is it modular?» but a set of concrete factors the municipality will assess:
- The intended use — housing, tourism, agricultural support, office.
- The permanence sought and the duration of the installation.
- The degree of physical integration into the ground and the type of foundations.
- The existence of utility connections for water, power and drainage.
- Associated ground works: excavation, fill, retaining structures, access roads.
- The real mobility of the unit once installed.
- What the territorial planning instruments — municipal and detail plans — allow at that location.
- Easements, public interest restrictions and specific municipal regulations.
Framing based on analysis of the new regime applied to modular construction, SSE HF. The regime had previously been amended by Decree-Law 10/2024 of 8 January. This page is informative and does not replace legal advice on your specific case.
Three routes
Which procedure applies
Prior notification
A simpler procedure, available where the planning framework is already defined and the operation falls within established parameters. It still requires a complete design and professional liability.
Preliminary information request
Not a permit, but a formal question to the council about viability. A favourable answer binds the authority and is valid for two years, with one possible confirmation and a further year.
A preliminary request is the best tool before buying land
If you have not bought the land yet, or you have and are not certain what you can build, a preliminary information request is the most useful and cheapest instrument available to you. It formalises the question «can I build this, here, with these characteristics?» and obliges the council to answer.
A favourable response binds the competent authorities and is valid for two years, with the possibility of one confirmation and a further year. That turns an expectation into a solid basis for investment — and stops you buying land for an idea the council will never approve.
After the works: the occupancy title
Once installation is complete, you need the title that allows the building to be used. The new regime distinguishes a simple utilisation notification, effective immediately, from a notification with a period, during which the council may carry out an inspection. Without an occupancy title there is no proper registration, no bank finance, and any future sale is compromised.
Risks
What happens if you install without a permit
This is not a theoretical list. These are the consequences set out in the regime and applied by municipalities.
| Consequence | Practical impact |
|---|---|
| Works embargo | Immediate stop, with modules already paid for and on site |
| Suspension of use | Prohibition on living in or operating the unit |
| Administrative offence and fine | Financial penalty for the owner and, in some cases, the professional |
| Corrective works | Works imposed to bring the construction into compliance |
| Obligation to legalise | A legalisation process, which is not always possible |
| Removal or demolition | Order to remove the unit at the owner's expense |
| Sale and finance blocked | Without an occupancy title the property is not mortgageable or registrable in normal terms |
One point deserves emphasis: not all unlawful works can be legalised. If the operation is incompatible with the municipal plan, with agricultural or ecological reserve designations, or with an easement, no legalisation process will save it. Source: SSE HF.
Checks before buying land or a module
This is the list we work through with every client before accepting an order. We recommend you work through it even if you do not buy from us.
- Confirm that the intended use is permitted at that location by the municipal plan and any detail plan.
- Check whether the land falls within the National Agricultural Reserve or the National Ecological Reserve, which severely restrict building.
- Check heritage and environmental restrictions and easements relating to aviation, roads, water resources or power lines.
- Confirm the solution meets requirements for structural safety, health and sanitation, thermal and acoustic performance, accessibility and fire safety.
- Confirm that an occupancy title can be obtained at the end of the process — not just a construction permit.
- Get the technical specification from the supplier in writing: insulation type and thickness, wall U-value, structural calculations, seismic and wind zones considered.
If a supplier tells you that «modular does not need a permit», they are transferring to you a risk that can cost the full value of the house.
FAQ
Permits: specific questions
What if the house is on wheels or not fixed to the ground?
Real mobility is one of the assessment factors, but it is not an automatic way out. If the unit is connected to utilities, used continuously as housing and stays in place with a permanent character, the likelihood of it being treated as a building is high. A mobile unit is also neither registrable nor mortgageable as property.
How long does permitting take in Portugal?
It varies enormously by council: from around a month for a simple, well-prepared prior notification to more than six months for a full permit requiring consultation of external bodies. It is the least predictable stage of the whole process.
Are permits included in the module price?
No. Design fees and charges are quoted separately, because they vary a great deal from one council to another and from one country to another. We prepare and lodge the application and tell you what to budget for in your own municipality; the charges are paid directly to the council.
Are the rules the same in the other countries you deliver to?
No. Each country, and often each region, has its own regime. In Spain control is municipal with strong influence from the autonomous communities; in Germany each Land's Bauordnung applies; in France it depends on the local plan and the permis de construire. We work with local partners and permitting is always handled under the law of the country of installation.
Get a quotation for your plot
Tell us where the land is and which layout you are after. We reply within 48 hours with a detailed quotation, a lead time and a clear list of what is and is not included.