Mastros is neither a contractor nor a project manager. We don't perform the work and we don't run your project for you.
Mastros is the trust infrastructure between you and the artisan you choose. Every step of the project (verification, contract, milestone payments, mediation) is structured like a real construction project: clear, documented, verifiable. You stay in control. You choose the artisan. You validate each step. We hold the framework.
The founder spent ten years designing and overseeing construction projects. The discipline of a construction project (milestones, validations, document trails) is essential for work to land well. Mastros applies that same discipline to renovation between homeowners and artisans.
Our revenue comes from artisans, after project completion. This structure aligns our work with the quality of your experience, with no fees passed on to you.
Trois éléments concrets :
Mastros structures the administrative, financial, and documentary elements of a renovation: contract, milestone payments, mediation, project archives. You build the relationship with your artisan. We hold the framework that protects both parties during and after the project.
Before an artisan appears on Mastros, we verify their company registration, professional qualifications, ten-year guarantee insurance (décennale), professional liability, and identity. Without a complete file, the profile is rejected.
We monitor these documents over time. An artisan whose documentation is no longer valid cannot receive new projects until regularised.
our data is stored in Europe, GDPR-compliant. You retain ownership of your project information and can export or delete it at any time. No data is sold to third parties.
Mastros is 100% free for clients: 0% commission, no signup fees, no hidden fees.
You pay exactly the quote agreed with your artisan. Our revenue comes from artisans, after project completion.
Payments are structured in milestones tied to project progress. Each payment is secured until the corresponding milestone is validated by the client. The artisan receives funds after your confirmation.
A single project description on Mastros lets you reach multiple artisans. You receive their proposals and choose at your own pace.
The contract is generated and signed electronically in your project space, compliant with French e-signature law. You receive a timestamped PDF copy, accessible anytime from your space.
Energy renovation (insulation, heat pump, windows, ventilation), interior renovation (kitchen, bathroom, painting, space optimization, complete apartment renovation), technical equipment (electrical, plumbing, heating, diagnostics, safety systems), architectural services (building permits, design, project management, quality inspection). From small repairs to complete transformations.
At each step, you validate or contest progress. In case of disagreement, unreleased funds stay protected. Our team opens mediation to help reach a resolution that's fair to both parties.
For our launch, we operate in Île-de-France (Paris and surrounding region). During this phase, our team personally supports each project: we identify the artisans who match your needs and present them to you. As our network grows, you'll be able to select artisans directly from the platform. Expansion to other regions is progressive. You can register now to be notified when your area opens.