Energy Performance Renovation

Comprehensive energy renovation solutions from complete DPE upgrades to individual improvements. RGE-certified artisans and coordinated approach ensure compliance with Paris energy standards.

The challenges of energy renovation in Paris
Imminent Rental Ban
Copropriété Blocks
5-7 Trades to Coordinate
Finding Qualified RGE Artisans
How Mastros coordinates your energy upgrade
Describe your project
Receive matched proposals
Select your team
Track execution
Complete & verify
What's included in a full energy renovation

Scope of work
- ✓Pre-renovation energy audit and planning
- ✓RGE-certified professionals per trade
- ✓Detailed project timeline with coordination
- ✓Quality materials and specifications
- ✓Verified artisan insurance (Décennale + RC Pro)

Typical timeline
- ✓Full energy renovation - 4-8 weeks
- ✓Heat pump installation - 3-5 days
- ✓Window replacement - Made to order
- ✓Interior insulation - 1-2 weeks
- ✓VMC installation - 2-4 days

Trades involved
- ✓RGE energy diagnostician
- ✓RGE insulation specialist
- ✓RGE heating technician
- ✓Window installation specialist
- ✓Ventilation specialist (VMC)
- ✓Electrician (NF C 15-100)
Not Haussmann, Paris 20ème
Involved from the very beginning of the apartment search, the client presented us with this 32 m² apartment in Paris's 20th arrondissement. While attracted by the large windows and unobstructed view, he was nonetheless perplexed by the amount of work required and the existing layout: a disproportionately large kitchen, bathroom, and toilet, making the main room too small and difficult to furnish, single-glazed windows, and outdated finishes.
Our initial role was to guide our client through the purchase process by analyzing the energy performance certificate, the quality of the building's management, and the apartment's inherent qualities.
Since the apartment was structurally divided in two by a load-bearing wall, our concept was to consolidate all the wet rooms into the first zone, thus freeing up the second zone, which would benefit from the light and view, to create a 23 m² living space.
The two zones are separated by an original glass door and distinguished by their flooring: tiles for the waterproof zone and natural linoleum for the living area. This keeps the "technical" spaces grouped together and isolated from the more formal living and sleeping areas.
A simple layout, custom-made furniture, and meticulous attention to detail to achieve the right dimensions for each function allowed us to create a comfortable and spacious apartment. A small apartment that feels like a large one.
The exposed concrete walls, revealed by stripping away the layers of plaster, led us to choose raw and understated materials for an original and calming decor. The use of raw MDF for all the woodwork adds a touch of softness, contrasting with the concrete and aluminum countertops. The light gray tiles and natural linoleum bring light and highlight the colorful objects in the home.
Despite a tight budget, we replaced the windows with double-glazed wooden frames whose white paint is guaranteed for 20 years in order to best respect the original building and promote the use of bio-sourced materials.


Our services
Full energy renovation (DPE upgrade)
Heat pump installation
Window replacement (double glazing)
Interior thermal insulation
Ventilation system (VMC)
What your investment includes
PRICE RANGE — Full energy renovation
- Skilled labor (RGE certified): 40 to 45%
- Equipment and materials: 40 to 45%
- Project coordination: 8 to 12%
- DPE and energy audit: 2 to 4%
Why Mastros
Transparent cost breakdown
Milestone payment protection
Full visibility on scope and pricing
You approve every change
Verified RGE certified artisans
Post-work DPE certification

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Describe your project and receive proposals from verified RGE artisans within 72 hours. No commitment, 0% commission.