Energy Renovation in Strasbourg
In Strasbourg, energy renovation must take account of a highly varied architectural heritage: buildings on the Grande Île, properties in the Neustadt, co-owned buildings, half-timbered houses, timber-framed buildings and detached homes across the Eurométropole. In the Bas-Rhin (67), the cold winters of the semi-continental climate increase the importance of a high-performing building envelope and correctly sized equipment. GRAM Énergie supports you in defining a project suited to the property, its architecture and any heritage protection constraints. Audits, insulation, ventilation, heat production and controls can therefore be organised within a coherent plan rather than treated as separate interventions.
Tip: have your energy performance certificate (DPE) and energy bills to hand for a more accurate estimate.
Why renovate your home in Strasbourg
On the Grande Île and in the Neustadt, interventions may be subject to heritage constraints affecting façades, roofs or windows and doors in particular. Depending on the location of the building and the nature of the project, the opinion of the architecte des Bâtiments de France may be required. Energy improvements must therefore seek solutions that are compatible with the existing architecture: treatment from the inside, window improvements, work on the roof or adaptation of equipment. The choice consequently depends not only on the performance sought, but also on the characteristics of the building and the rules applying to the property.
Strasbourg also has many co-owned buildings. In these properties, some operations are private while others concern the building as a whole. A façade, roof covering, boiler room or certain networks cannot be treated like a simple piece of equipment within a flat. The audit and improvement plan must therefore distinguish the scope of the individual property from that of the co-ownership. This organisation makes decisions easier and can also help prepare an appropriate application for grants, financing or support according to the actual nature of the interventions.
Half-timbered homes and timber-framed buildings found in certain areas require a different approach again. The behaviour of the walls, moisture management and the choice of materials must be examined before selecting a solution. By contrast, a more recent detached house on the outskirts of the Eurométropole may mainly have requirements relating to equipment, insulation or ventilation. Connection to a district heating network can also be considered on a case-by-case basis where the location and technical conditions allow it. Climaxion and the France Rénov’ public service of the Eurométropole de Strasbourg are among the information and support schemes available in the area.
The audit helps identify priorities while taking account of the building, the climate and any heritage constraints.
Our services in Strasbourg
Global energy renovation
A global energy renovation makes it possible to coordinate several areas: the building envelope, heating, ventilation, hot water and controls. This approach is useful when a property has several weaknesses at the same time or when a co-owned building is preparing a broader programme. It helps build a plan, organise the different tasks and avoid an operation carried out too early making the following stages more difficult.
Heat pump
A heat pump can be considered when the heating system needs to evolve. Its suitability depends on the requirements of the property, the condition of the building envelope, the heat emitters and the space available. In Strasbourg, architectural constraints or those relating to a co-owned building may also influence the installation of an outdoor unit. Feasibility must therefore be assessed before requesting a final quotation.
Insulation
Insulation work may target the walls, loft, roof or certain floors. In a protected building or timber-framed construction, the techniques must be adapted to the substrate and the way it performs. External work is not always possible. The choice of materials and method then depends on the building, moisture, architecture and the space available.
Thermodynamic water heater
A thermodynamic water heater can be considered for domestic hot water production. Its installation requires a suitable volume, appropriate connections and a good understanding of the spaces concerned. In a flat or detached home, its installation must remain consistent with the ventilation, other equipment and the general organisation of the project.
Energy audit
An energy audit makes it possible to analyse the building envelope, consumption and equipment in order to compare several scenarios. It provides useful information for prioritising interventions and preparing a more structured project file. In a co-owned building or older property in Strasbourg, this stage notably helps distinguish improvements that can be carried out immediately from those requiring a broader decision.
Mechanical ventilation
Ventilation must evolve with the airtightness of the property. When windows are replaced or walls are treated more effectively, uncontrolled air leakage is reduced. Mechanical ventilation can help maintain appropriate air renewal, provided that its sizing matches the configuration of the rooms. This issue is particularly important in older housing where airflow patterns may have changed over time.
Smart thermostat
A smart thermostat controls heating equipment according to schedules and usage. It can complement an existing or recent installation without replacing the necessary work on the building envelope. Its usefulness depends on the system in place, the distribution of the rooms and occupancy habits. Within a coherent overall approach, it is therefore one control tool among others.
Typical projects in Strasbourg
Flat in an older building within a heritage area
Windows and doors, walls and certain equipment may require improvement, but interventions visible from outside must take architectural constraints into account. The project may therefore favour certain internal solutions or systems compatible with the applicable rules. The distinction between private areas and elements falling under the co-ownership must be established before the works.
Half-timbered or timber-framed house
In this situation, the aim is not simply to add insulation. The composition of the walls, moisture management, ventilation and existing materials must be understood before any intervention. An environmentally responsible approach can use solutions compatible with the behaviour of timber, but every building requires a specific assessment and cannot be treated according to a single model.
Detached house in the Eurométropole with ageing equipment
A more recent home may have a partially efficient building envelope but still retain an older system or basic controls. The project then involves examining the remaining heat losses, ventilation and heating requirements before upgrading the equipment. Depending on the area, the possibility of connection to the district heating network can also be checked on a case-by-case basis.
Grants for your works in Strasbourg
Several grants can be considered depending on the project: MaPrimeRénov’, the CEE (energy savings certificates) scheme, reduced VAT and the éco-PTZ (zero-interest eco-loan). Anah is also involved in various schemes relating to housing improvement. Certain grants require the use of an RGE-certified professional. Co-owned buildings may follow specific pathways depending on the nature of the project, while an AMO, or project management assistance service, may be involved in certain projects to support organisation and monitoring of the procedures without this role being automatically necessary.
Climaxion, the Grand Est regional programme, and the France Rénov’ public service of the Eurométropole de Strasbourg can also provide information about procedures and existing schemes. Grants must nevertheless remain consistent with the technical requirements of the property. To present your project to GRAM Énergie, use the contact page. You can also consult France Rénov’ to check national conditions, the CEE scheme and the support pathways applicable to your project.
MaPrimeRénov’, the CEE scheme, the éco-PTZ and reduced VAT can be considered depending on the project and the applicant’s situation.
How we work
Assessment of your request
We identify the type of property, equipment, any architectural constraints and the objectives being pursued.
Building assessment
The walls, roof, openings, ventilation and heating equipment are examined in order to identify priority areas.
Definition of the solutions
The options are compared according to the architecture, materials, climate and any co-ownership or protection rules.
Planning the interventions
The operations are ordered to maintain consistency between the building envelope, equipment, ventilation and administrative constraints.
Monitoring the stages
The support maintains the link between the initial assessment, the project file, the decisions taken and the planned implementation.
We also work across Grand Est
GRAM Énergie also supports renovation projects in Colmar, Mulhouse and Nancy. To view the département level, go to the page dedicated to energy renovation in the Bas-Rhin. The page dedicated to energy renovation in Grand Est provides access to the other areas of the region.
Frequently asked questions
Can a flat in a heritage area of Strasbourg be improved?
Yes, but interventions visible on the façade, roof or certain windows and doors may be regulated. Depending on the location and the nature of the project, the opinion of the architecte des Bâtiments de France may be required. Solutions must therefore be defined by taking account of both the desired comfort and the architectural constraints.
What precautions should be taken with a half-timbered house?
The composition of the walls, the condition of the timber, the movement of water vapour and ventilation must be understood before selecting materials. An older wall should not be treated like a recent construction. The aim is to improve comfort without blocking moisture transfer or creating problems within the structure.
How should works be prepared in a co-owned building in Strasbourg?
Start by distinguishing private equipment from common elements. Façades, the roof, a boiler room or certain networks may require a collective decision, while other interventions relate directly to the flat. This distinction makes it possible to prepare a realistic project file and identify which decisions must be taken at building level.
Is connection to a district heating network always possible in Strasbourg?
No. The possibility depends on the location of the building, the presence of the network nearby and the technical characteristics of the site. Where connection can be considered, it must be compared with other solutions in order to select an option that is consistent with the requirements of the property and the organisation of the building.
Which documents should you gather before considering an energy improvement in Strasbourg?
Prepare energy bills, information about the equipment, available surveys, any plans and useful co-ownership documents. For a property located in a protected area, information concerning architectural constraints may also be important. To send these documents to GRAM Énergie, use the contact page.
Let’s talk about your project
Tell us about your home and your goals: we help you prioritise the works and identify the grants worth looking into.