Discover the essential rules and precautions for renovations, painting, and the preservation of heritage-listed buildings, avoiding fines and adding value to your property
Submitted at Apr 22, 2026, 6:00 PM

(Fran Parente/Divulgação)
Living or working in a heritage-listed building is like being the guardian of a fragment of history. These buildings bear witness to bygone eras, extinct architectural styles, and the very evolution of the city itself. However, the beauty of a classical facade comes with a series of legal and technical responsibilities that can raise questions for owners and building managers.
(Levi Fanan/Divulgação)
After all, preserving historic heritage is not just about keeping the building \"standing\", but ensuring that its aesthetic and structural essence remains intact for future generations. Therefore, before any intervention, you need to understand that the rules are significantly stricter than for conventional constructions.
Heritage listing is an administrative act carried out by the Public Authority (at the municipal, state, or federal level) with the aim of protecting assets that have historical, cultural, architectural, or emotional value. When a building is listed, it becomes protected by bodies such as IPHAN (national), CONDEPHAAT (state), or specific municipal agencies.
(Theatro Municipal/Divulgação)
Contrary to what many think, listing does not take ownership away from the owner, but it does impose restrictions. The owner retains the right of use but loses the freedom to make changes that would compromise the character of the asset. This means that any change, however small it may seem, must be reviewed and authorized by preservation councils.
The short answer is: yes, but with caveats. Painting the facade is considered necessary maintenance; however, you cannot simply pick a new color from a paint-store catalog.
Casa das Rosas. (Reprodução/ Paulo Pinto/Divulgação)
In listed buildings, the original color palette is usually protected. Often, it is necessary to carry out a paint stratigraphic survey, a technical process in which professionals scrape old paint layers to discover the exact hue from the time of construction. Beyond color, the type of paint matters: older buildings often use lime mortars that do not \"breathe\" well with modern acrylic paints, which can cause blistering and structural damage.
Pinacoteca do Estado de São Paulo, por Paulo Mendes da Rocha + Eduardo Colonelli + Weliton Ricoy Torres (Nelson Kon/Divulgação)
Restrictions vary according to the degree of listing. Some buildings have comprehensive protection (interior and exterior), while others protect only the mass and facade.
Almost always untouchable. Replacing wooden windows with aluminum ones or altering the design of moldings is strictly prohibited.
If the listing is only external, interior renovations to modernize wiring, plumbing, and layout are usually approved more easily, provided they do not compromise the structure.
Installing air conditioning is one of the biggest challenges. Often, condenser units cannot be visible on the main facade, requiring creative engineering solutions.
Attempting work on a listed building without a technical project is a direct path to heavy fines and embargoes. The first step should be the hiring of an architect with experience in historic heritage.
(Freepik/Divulgação)
This professional will be responsible for preparing the written specification and the restoration project, which must be filed with the responsible agency. This process can be lengthy, taking months for approval. It is essential to be patient and understand that dialogue with heritage technicians is the best way to make the renovation feasible without breaking the law.
Ignoring preservation guidelines can be costly. Irregular interventions on listed assets are considered crimes against cultural heritage. In addition to fines that can exceed the value of the property, the owner may be legally compelled to restore the asset to its original state, bearing very high restoration costs to undo what was done.
(Diogo Moreira/Governo de São Paulo/Divulgação)
Maintaining a listed building requires care and investment, but the added value of occupying a space with such cultural significance is immeasurable. With proper planning and respect for the rules, it is possible to modernize the use of the building without erasing the marks of time that make it unique.
CASACOR Publisher is an exclusive content-creation agent, developed by the CASACOR Technology team from the knowledge base of casacor.com.br. This text was edited by Chrys Hadrian.