House Extension in Vernier — Free Quote
Hiring a house extension in Vernier should not involve a mountain of paperwork. SOS-Travaux.ch reduces the process to three steps: you describe your project online, a qualified tradesperson from the canton of Genève contacts you to arrange a site visit, and you receive a clear written quote before any work begins. No registration, no admin fees, no unnecessary follow-up calls — just an efficient connection with the right professional for your work in Vernier.
Indicative price in Vernier: 47200–177000 CHF/fixed price
Request a free quoteWhy trust us with your house extension work in Vernier?
- Network of local professionals active in Vernier and throughout the canton of Genève
- Transparent pricing: indicative price ranges published, zero commission on your project
- Support from quote request through to project completion if needed
- Professional liability and accident insurance verified before every listing
- Service available 7 days a week — including urgent callouts (leaks, breakdowns, damage)
Our house extension services in Vernier
In Vernier, our partner house extension professionals work on all types of building: apartment blocks, detached houses, commercial premises and renovated historic properties. Each project begins with a thorough assessment of the client's needs and technical constraints, whether the building is an older structure or a recent construction subject to Minergie energy standards. Tradespeople in the canton of Genève listed on SOS-Travaux.ch coordinate their work with other trades when multiple specialities are required, ensuring smooth execution and a result that meets your expectations.
Extension et agrandissement de maisons en Suisse romande : surélévation, annexe, véranda.
How does a house extension project work in Vernier?
Analysing your needs
Contact SOS-Travaux.ch and describe your house extension project in Vernier: the more detail you provide, the faster and more accurate the match will be. We identify the best-placed professional in our network — by speciality, location and availability — from among the tradespeople active in the canton of Genève.
On-site visit and diagnosis
The house extension tradesperson visits Vernier for a free initial assessment. They evaluate the existing condition, identify hidden constraints (concealed pipework, structural condition, moisture) and check applicable regulatory requirements. This step prevents unwelcome surprises during the works and produces a realistic, well-founded quote.
Detailed proposal and schedule
You receive a complete commercial proposal: technical description of the works, list of materials with brand names and references where relevant, a week-by-week schedule and the total budget in CHF. The price is firm and final, subject only to unforeseen issues documented in writing. You have all the time you need to compare and ask questions before signing.
Professional execution with daily updates
Works begin on the agreed date. The tradesperson complies with the Swiss standards specific to their trade — electricians must hold an ESTI authorisation, plumbers must be SSIGE-approved — and coordinates any other trades needed. You are offered regular progress updates to keep you informed at each stage of the works.
Quality check and resolution of snags
Before final handover, the tradesperson carries out their own internal quality inspection. At the handover in Vernier, you note any outstanding items on a snagging list: the tradesperson commits contractually to resolving them within an agreed timeframe. Only after your sign-off does the final payment become due.
House Extension prices in Vernier — Indicative rates 2026
Price ranges based on the Swiss market — Canton of Genève
| Service | Min. price | Max. price | Unit |
|---|---|---|---|
| House Extension | 47 200 CHF | 177 000 CHF | fixed price |
Indicative price — the final rate depends on the complexity of the project.
Budget and financing — House Extension in Vernier
The budget for a house extension project in Vernier depends on the area involved, the quality of finish selected and any technical constraints specific to your building. As a guide, prices in the canton of Genève range from 47200 to 177000 CHF/fixed price for a standard service including labour and materials. Budget an additional 10–15% reserve for unforeseen items, which are common in older buildings. On the financing side, Swiss homeowners have several levers: maintenance costs are deductible from income tax, energy efficiency investments qualify for Building Programme subsidies (potentially several thousand CHF depending on the canton of Genève), and major works can be financed through a supplementary mortgage or an early withdrawal from the third pillar. Compare these options with your bank advisor to find the most advantageous arrangement for your project in Vernier.
Regulations and standards — House Extension in the canton of Genève
Undertaking house extension work in Vernier without understanding the regulatory framework risks leaving you with a non-compliant installation that your building insurance may refuse to cover in the event of a claim. Swiss construction law operates on two levels: federal legislation sets out the general principles, while the canton of Genève has its own implementing regulations. In practice, these cover fire protection (AEAI requirements, mandatory for any building permit), electrical installations (NIBT standard and ESTI inspection after works), sanitary connections (SSIGE approval and compliance with municipal requirements in Vernier) and thermal insulation (verified by the cantonal energy office for subsidised projects). A qualified tradesperson in the canton of Genève knows and automatically complies with these requirements — but it is useful for you to be aware of them too, to confirm that the works are being carried out correctly.
Frequently asked questions — House Extension in Vernier
How much does house extension cost in Vernier?
How quickly can I get a tradesperson in Vernier?
What qualifications should a house extension professional hold in Switzerland?
Are there subsidies available for this type of work in Genève?
What warranty applies to house extension work in Vernier?
Need a house extension professional in Vernier?
Describe your project and we will connect you with a qualified tradesperson in the canton of Genève. Free and with no obligation.