To find out what permits you need to build a house, you must apply for a planning permit from the local council, submit an approved technical project, and obtain authorizations for installations and occupancy. In addition, upon completion, you will need the final building certificate and the first occupancy license to legally inhabit the property.
When you think about building a house, the first thing that many people don't consider is the number of permits required. But they are essential to ensure that everything is legal and to avoid penalties. In this guide, I explain in simple terms what permits you need to build a house, step by step.
Permits to build a house: overview by stages
Before going into detail, it is important to understand that permissions are organized by stages of the process:
Before applying for a permit → check that the land is suitable for building.
Before starting construction → urban planning permit and approved technical project.
During construction → technical management and safety compliance.
Upon completion → final certificate and first occupancy license.
This structure helps you to not skip any key steps.
1. Verify that the land is suitable for building.
Before starting any application, confirm that the land is suitable for construction.
You should review:
That it is classified as urban or developable land.
That it is not affected by protected areas, environmental restrictions, or easements.
That municipal planning allows for height, occupancy, setbacks, and residential use.
If the land is not buildable, the city council will reject the application even if the project is correctly drafted.
What exactly to check
Permitted use (single-family dwelling, for example).
Minimum surface area required.
Maximum occupancy percentage.
Permitted height and number of floors.
An architecture firm is responsible for preparing the technical project and processing the necessary permits to build a house.
2. Planning permission or building permit
The building permit is the main permit required to build. Without it, you cannot start construction.
To apply, you will normally need:
Basic technical project signed by architect.
Plans and descriptive report.
Justification of compliance with planning.
Payment of municipal taxes.
The city council checks that the project complies with regulations before authorizing its commencement.
3. Technical project and approval
Two different technical documents are required to build a house:
Basic project
It is used to obtain the license.
Implementation project
Includes construction details, installations, and structure necessary to execute the work.
This project is usually approved by the relevant professional association. In addition, it is common practice to carry out a geotechnical study of the land in order to correctly define the foundations.
4. Authorizations for facilities and services
In addition to the main license, you must manage permits related to utilities:
Electrical connection and approval of the installation project.
Connection to drinking water and sanitation.
Gas network, if applicable.
Additional authorizations if required by the municipality.
These steps can be taken simultaneously, but they must be approved before commissioning.
5. Notification of commencement of works and occupation of public roads
Many local councils require formal notification of the start of work before work can begin.
If you need to place:
Scaffolding
Containers
Construction site huts
Machinery on the street
You must apply for a specific permit to occupy public roads.
6. Construction management and safety coordination
During implementation, mandatory technical managers are involved:
Construction manager.
Director of Execution.
Health and safety coordinator (if several teams are involved).
These figures ensure that the construction complies with the approved project and that technical and safety conditions are met.
7. Completion of construction: certificate and first occupancy license
When construction is complete, there are still essential procedures to be completed.
You will need:
Final certificate of completion, issued by the responsible technician.
Application for a first occupancy license.
In your case, certificate of occupancy.
Without these documents, you will not be able to legally occupy the property or sign a permanent contract for utilities.
Afterwards, it is advisable to:
Register the property in the Land Registry.
Update the data in the Land Registry.
Visual summary of what permits you need to build a house
| Moment/phase | Permit or required document |
|---|---|
| Prior verification | Verification of buildability |
| Project presentation | Planning permission |
| Technical documentation | Approved technical project + geotechnical study |
| Facilities | Electricity, water, and gas permits |
| Commencement of work | Prior notification + public road permit |
| During the construction work | Technical management + safety coordination |
| Completion | Final certificate + occupancy permit |
| Registration | Registration and cadastral updating |
Common mistakes that complicate execution
Buying land without checking its buildability.
Commencing construction work without a permit.
Do not anticipate municipal processing time.
Forget permits for occupying public roads.
Do not apply for the first occupancy license upon completion.
Avoiding these mistakes reduces delays and potential penalties.
Frequently Asked Questions
What permits are needed to build a house?
To build a house, it is usually necessary to have an architectural plan and apply for the corresponding building permit from the local council.
Who processes the permits to build a house?
Generally, the architect or architectural firm is responsible for preparing the technical documentation and processing the necessary licenses.
How long does it take to get permits to build a house?
The timeframes may vary depending on the municipality, but obtaining licenses can take anywhere from several weeks to a few months.
Is it mandatory to have an architectural plan to build a house?
The timeframes may vary depending on the municipality, but obtaining licenses can take anywhere from several weeks to a few months.
Are you thinking about building your own home?
Author
Cabana Team
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