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immofix

An all-in-one process to buy an energy-guzzling house and turn it into an energy-efficient home.

June 2025

immofix

An all-in-one process to buy an energy-guzzling house and turn it into an energy-efficient home.

  • World Alliance Member
  • Featured Solution
  • Labelled Solution
Label Date June 20, 2025
By IMMOFIX
From France
Maturity stage TRL 6 / 7 - Prototype demonstration 1:1

Immofix specializes in transforming energy-inefficient homes into sustainable, high-performance living spaces. We handle every aspect of the renovation process, from project design to execution, ensuring improvements in energy efficiency, accessibility, and aesthetics. Our innovative approach includes financing solutions, making it easier for homeowners to afford renovations. By focusing on reducing energy consumption and enhancing thermal comfort, Immofix contributes to lowering carbon emissions in the residential sector. With a commitment to sustainability, we guarantee the energy performance of our renovations for 10 years, offering peace of mind to homeowners while fostering a greener future.

The Environmental Benefits

  • Homes renovated with Immofix reduce energy consumption by up to 70%, translating into annual heating cost savings of approximately €3,200 for a typical 100m² home
  • Immofix renovations upgrade energy-inefficient homes (EPC E, F, G) to at least a B rating, meeting BBC standards, boosting property value by 24%, and mitigating regulatory risks
  • Immofix combines renovation costs into one financing plan. For example, a €300,000 loan at 3.5% over 20 years saves over €20,000 compared to separate operations, making renovations more affordable
  • Immofix cuts CO₂ by ~10 t/year by reducing energy use (46,200 to 7,700 kWh). Adding 3 kWp solar panels saves ~0.25 t more, cutting ~10.25 t/year total
  • Quick Emissions Payback: The combined annual reduction of ~10.25 tons of CO₂ offsets the renovation and solar panel production emissions (~10.1 tons) in about one year
  • Renovation uses 40-80 times fewer materials per m² than new construction, e.g., 0.03 tons vs. 1.2 tons per m² for a new home
  • New construction uses 85% granulates, sand, and cement, while renovation conserves scarce resources like sand.

The Financial Benefits

  • Using alternatives like a real estate agent (4-6%), a broker (1-2%), and a project manager (3-4%) can total over 10% of the property's pre-renovation price, compared to 6.90% incl. VAT for Immofix’s all-in-one offer, providing a lower cost and simplified
  • Including renovation costs in a mortgage, as Immofix does, is cheaper over time compared to separate renovation loans. Mortgage rates are usually lower than personal or renovation loan rates, reducing total interest costs and offering a single, manageable
  • Immofix offers a lower total cost of ownership than traditional alternatives due to key factors: integrated energy renovations significantly cut energy bills, mortgage-level financing includes renovation costs at lower interest rates, and eligible governm
  • For homes initially rated F or G, renovations to reach low-energy building standards can increase property value by 20 to 30% on average. This significant boost is due to the major energy performance improvement, appealing to buyers focused on energy

Target client profile

Activity Region

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Company Profile

IMMOFIX

The new real estate platform guaranteeing buildings long-term energy performance, to take care of both homes and people.

Headquarters 31000 Toulouse, France
Type Startup or self-employed
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator IMMOFIX has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.