Renovating in Fribourg: A complete guide for property owners

In Fribourg, the federal building register lists 3'307 residential buildings and 22'990 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.

Source : Registre fédéral des bâtiments et des logements (RegBL), OFS, 2026. Existing residential buildings; percentages of recorded values.

Located at an average altitude of 587 meters, Fribourg has climatic conditions that directly influence the thermal management of buildings.1°C and about 79 frost days per year, heating needs are significant.7°C.

The building stock in Fribourg, rich in history, requires special attention during renovations. Adapting these structures to current standards must take into account the severity of the local climate.

The use of high-performance insulation materials and moisture management are essential to ensure the longevity of the building while ensuring optimal indoor comfort.

Understanding these climatic factors is the first step for any successful renovation in Fribourg, in order to transform existing structures into efficient and sustainable housing.

Improving energy efficiency is the priority for any property owner in Fribourg. The first step is to act on the building envelope: thermal insulation of facades and replacement of windows are the most effective levers for reducing energy consumption.

These interventions not only reduce heating needs but also stabilize indoor temperatures throughout the year.

The canton of Fribourg offers support for this work, notably through the Buildings Programme, encouraging owners to undertake comprehensive renovations.

In addition, the installation of renewable energy production systems is encouraged. Global irradiation in Fribourg, estimated at 1346 kWh/m²/year, offers interesting potential for solar photovoltaics, with an estimated yield of 1184 kWh/kWp/year.

By investing in insulated roofing and solar systems, owners increase the value of their property while sustainably reducing their energy bill.

This approach is in line with cantonal climate goals, aimed at limiting the use of fossil fuels in residential and commercial building stock.

When replacing a fossil or electric heating system, it is now required that at least 10% of the necessary heat be covered by renewable energies or district heating. This measure aims to gradually decarbonize the building stock.

However, exceptions exist, notably if the replacement is deemed disproportionate by the authority or if expensive energy efficiency measures have been carried out recently.

In Fribourg, district heating (CAD Fribourg) managed by Groupe E is a preferred solution. Connection to the network, the conditions of which vary depending on the sector and infrastructure deployment, avoids the installation of an individual boiler.

For those opting for an autonomous solution, air-to-water or brine-to-water heat pumps are encouraged, with cantonal and federal subsidies available.

Choosing the right system requires an analysis of the geographic and technical situation of the building, in order to meet legal requirements while optimizing comfort and long-term operating costs.

Before starting work affecting the exterior appearance, structure, or insulation of a building, a check with the urban planning department is essential.

Listed properties or buildings in protected areas are subject to strict aesthetic and technical constraints, aiming to preserve the city's unique architectural identity.

These procedures ensure that renovations enhance the existing heritage while integrating modern solutions.

Outside of strictly protected areas, renovation remains subject to standard urban planning rules. Any significant project requires the submission of a compliant file to obtain the necessary permits.

It is highly recommended to integrate energy requirements from the design phase, as a well-planned renovation allows for the combination of heritage preservation and high energy performance.

Working with architects or firms specialized in the local context of Fribourg is a major asset to anticipate administrative constraints, ensure the compliance of the work, and sustainably increase the market value of the building.

Subsidies primarily concern energy renovation, including facade insulation, window replacement, and the installation of renewable heating systems such as heat pumps or solar thermal.

These grants, often cumulative with federal contributions from the Buildings Programme, are essential to reduce the initial investment.

For photovoltaics, a one-off federal payment, calculated according to the installed power (kWp), is available through Pronovo.

Tax-wise, the canton of Fribourg actively encourages the energy transition. Investments intended to improve energy efficiency, use renewable energies, or protect the environment are deductible from taxable income.

If these expenses exceed the income of the building for the current year, the excess can be carried forward to the two following tax periods.

In addition, owners can choose between deducting effective costs or a flat rate (20% for buildings over 10 years old, 10% for newer ones). This tax flexibility is a major advantage for planning work over several years.

Successful renovation in Fribourg relies on rigorous planning. Before starting work, it is advisable to draw up a complete energy audit and prioritize interventions based on their impact and eligibility for subsidies.

Coordination between different trades is crucial, especially for comprehensive renovations involving multiple areas, such as insulation, heating, and solar electricity.

Working with local professionals is highly recommended, as they know the specifics of Fribourg buildings, municipal regulations, and procedures for obtaining aid.

When selecting contractors, systematically request detailed quotes and check their qualifications, particularly for work related to the energy transition.

Prefer certified companies or those accustomed to high energy performance standards, as the quality of implementation is decisive for the final efficiency of the installations.

Do not hesitate to ask for references of similar projects carried out in the region. Good planning, including prudent budget and schedule management, helps avoid unforeseen events and guarantees a sustainable enhancement of your property in Fribourg.