Do I need to request permission to carry out home renovations?: Guide to licenses and procedures
In Studio by Clikalia , we know very well that undertaking a renovation is an exciting project, but we also know that to ensure its success and avoid legal and coexistence problems, good planning is as crucial as choosing the right professionals and establishing a clear budget. But it is equally important to know what permits and licenses to apply for so that there are no surprises.
If you are thinking about renovating your home and wondering, "Do I need to request permission to carry out work on my home?", the answer is yes, although the type of permission will depend directly on the scale of the work you plan to carry out.
Permits to renovate a home are local authorizations issued by the municipal councils of each municipality. These administrations define both the requirements and the necessary conditions for the work, and they are responsible for setting the fees and possible penalties for non-compliance.
Do I need to request permission to carry out construction work on my home? The definitive answer
It is essential to obtain the necessary municipal authorization for any large-scale project. The key to determining what type of procedure is required is the technical complexity and scope of the project. Local councils mainly distinguish between two categories of licenses, in addition to considering cases where a simple notification is sufficient.
What type of work do you want to carry out?
To know for sure what authorization you need, you must differentiate whether the work affects the structure of the building, its layout, or whether it is a minor intervention.
Major building permit: When the structure is affected
A major works permit is required for any work that involves modifying the structure of the property, altering its internal layout, or increasing its surface area. This type of work is considered to be large-scale and technically complex, and usually involves a significant budget.
Renovations that require a major building permit include:
- The comprehensive renovation of a building.
- The extension of the house upwards.
- Interventions affecting common elements of the building, such as facades, roofs, or staircases.
- Modify the structure of the home, such as knocking down a load-bearing wall or a partition wall to enlarge a living room, or enclosing a terrace.
- Major construction projects require the submission of a technical project that must be signed by a qualified professional, such as an architect or quantity surveyor.
Minor works license: Minor renovations
Minor work permits are designed for smaller-scale projects that, although they do not modify the structure or function of the building, do involve a change that goes beyond simple maintenance.
Common examples of works that generally require a minor works permit are:
- Replace doors and windows (although this may vary depending on the local council).
- Install kitchens and bathrooms.
- Make changes to interior partitions (raise or demolish non-structural partitions).
- Adapting housing for people with reduced mobility.
- Installation of plumbing, electrical, or HVAC systems.
If the renovation work also involves occupying public roads (for example, to place a rubble container), you will need to apply for an additional specific license for the bags and/or containers.
When do I not have to request permission to carry out construction work on my home?
Not all work carried out in the home requires a formal license, although it is essential to understand the difference between not needing a license and not having to report it.
Prior notification and affidavit
The situations in which you are exempt from applying for a license are limited, and generally refer to basic conservation or maintenance work that does not alter the structure or protected elements. Even in these cases, most local councils require prior notification or a declaration of responsibility. By submitting a declaration of responsibility, you are notifying the local council that you will be carrying out the renovation and guaranteeing that you will comply with current regulations, allowing you to start the work immediately.
Works that are typically considered exempt from formal licensing (although subject to notification) are:
Paint the interior of the house or the ceilings.
Sand the parquet flooring or replace the flooring or ceramic tiles.
Replace basic fixtures (faucets, pipes, outlets, or radiators) as long as the location is not changed and the electrical power is not increased.
Touch up interior carpentry, such as replacing interior doors or windows, without affecting load-bearing walls.
Procedures, costs, and where to apply for licenses
Regardless of whether I have to request permission to carry out major or minor home renovations or simply notify the authorities, the application must always be processed by the relevant local administration.
How much will the permit cost me?
The final price of the building permit consists of two main items, the percentages of which vary depending on the local administration:
Municipal fees: These are paid at the time of applying for the license (even if the permit is not granted) and usually range between 4% and 6% of the material execution budget for the work.
Tax on Construction, Installations, and Works (ICIO): This tax is paid once the license has been granted and generally represents between 2% and 4% of the total budget for the work (excluding VAT).
Where should I go to ask if I need to request permission to carry out building work on my house?
Licenses and notifications are requested or submitted to the local council where the property to be renovated is located. This entity will determine whether the work requires a minor or major license, or whether prior notification is sufficient. It is crucial to complete this process before starting any work.
The procedure can be carried out in person or online, so it is advisable to consult the official website of the local council to find out about their specific procedures. Also, bear in mind that, when applying for a minor license, documents such as the official form, plans, a descriptive report of the work, and the approved budget are usually required, along with proof of payment of the fees.
For these reasons and many more, we recommend that you always hire a renovation company that includes the application and processing of these types of licenses and permits among its services. You will save yourself a lot of paperwork, back-and-forth trips, and future headaches. At Studio by Clikalia, we have a team of professionals who specialize in managing permits and licenses so that your renovation is well covered and carried out in a timely manner.
What are the risks of renovating without a license?
The temptation to start work without the proper paperwork is high, but so are the risks and fines. If permits are not obtained to renovate a house, the owner faces fines and, in serious cases, an order to halt the work or even demolish what has been built.
Penalties vary greatly depending on the location and severity of the offense, ranging from €300 to €3,000,000, with the highest fines reserved for construction in protected areas.
As a general reference, violations are classified as follows:
- Minor offenses: Minor works carried out without a license, with fines ranging from €600 to €30,000.
- Serious offenses: Carrying out major works without a license, with fines ranging from €30,001 to €600,000.
- Very serious offenses: Activities affecting public property or protected assets, with penalties of up to €3,000,000.
In addition to fines, irregular construction work makes it difficult to sell or rent the property in the future, as it complicates legal and market procedures. In short, if you are wondering whether you need to apply for a permit to carry out work on your home, remember that planning properly and obtaining the relevant authorizations is the best way to transform your home with complete peace of mind.
So, if you need a high-quality comprehensive renovation project that meets your expectations, at Studio by Clikalia we will prepare a quote and proposal for you completely free of charge and with no obligation. And if you're happy with it, we'll take care of applying for all the necessary permits and licenses.
* A quick note: This post or guide provides a general explanation of the types of permits and licenses that may be required if you want to carry out major work on your home. As this is a process that depends on the local council where the work is to be carried out, the permits and licenses required may vary from one council to another, so we recommend that you always check with your local council before starting the work.

