Il est important d’avoir une idée approximative de la zone à remettre en état.
The average costs of an extension based on area in Switzerland
The price of a house enlargement in Switzerland mainly depends on the size of the added volume. For an extension of about 20 m², a budget of between 20,000 and 40,000 CHF should be planned. A project of 30 m² generally ranges between 30,000 and 60,000 CHF, while a project of 50 m² can reach 50,000 to 100,000 CHF in Switzerland.
These amounts most often include:
- the load-bearing structure,
- the insulation of the new volume,
- the interior walls,
- standard finishes.
The price per square meter generally varies between 1,000 and 2,000 CHF/m², depending on the complexity of the project and the quality of the materials chosen in Switzerland. These values serve as a basis for estimation, as many elements can adjust the final cost of your enlargement project in Switzerland.
The various elements that influence the price of a house extension in Switzerland
To establish the budget for an extension of your home, the professional must take into account several essential aspects. In Switzerland, Avenir Rénovations helps you manage your expenses with an excellent balance between quality of execution and cost of the services offered.
Each project has technical particularities, which means that the amounts mentioned below are general estimates. To obtain a quick and reliable simulation, feel free to use our efficient online tool designed to assess the cost of your work in Switzerland.
Other costs to consider for a house extension project in Switzerland
The budget document prepared for the expansion of your home in Switzerland will include expenses related to the intervention of each professional participating in the construction site. Avenir Rénovations relies on experts in Switzerland who charge reasonable rates while providing impeccable execution quality.
To ensure controlled financial management in Switzerland, it is also essential to include in your forecast the costs associated with administrative permits as well as those related to insurance covering any potential damages that may affect the construction.
Example of a quote for a house extension in Switzerland
On our platform, you can use an estimator to obtain a preliminary assessment of the cost of your extension project in Switzerland, taking into account several essential technical parameters.
For a complete quote, your Project Manager will come directly to your home in Switzerland to conduct a thorough study perfectly tailored to your needs.
The final pricing document will then be provided to you within 8 days, and the amounts indicated remain applicable for 1 month before the final validation of your order in Switzerland.
Quote for extension with roof terrace in Switzerland
| Designations (Switzerland) | Quantity | Unit Price Excl. VAT (CHF) | VAT | Amount Excl. VAT (CHF) | Amount Incl. VAT (CHF) |
|---|---|---|---|---|---|
| EARTHWORK – Work in Switzerland | |||||
| Daily rental of a mini-excavator (1.2 to 1.7 T) | 2 U | 690.00 CHF | 8.1 % | 1 380.00 CHF | 1 492.00 CHF |
| Mechanical stripping – class A/B – depth 0.30 m | 20 m² | 61.00 CHF | 8.1 % | 1 220.00 CHF | 1 319.82 CHF |
| Trench for buried networks | 25 ML | 110.00 CHF | 8.1 % | 2 750.00 CHF | 2 973.00 CHF |
| Drainage Ø100 mm – water pipeline | 25 ML | 69.00 CHF | 8.1 % | 1 725.00 CHF | 1 864.73 CHF |
| PVC collector Ø125 mm – drainage | 25 ML | 180.00 CHF | 8.1 % | 4 500.00 CHF | 4 864.50 CHF |
| MASONRY – Work in Switzerland | |||||
| Scaffolding: supply + assembly/disassembly | 55 m² | 32.00 CHF | 8.1 % | 1 760.00 CHF | 1 902.56 CHF |
| Concrete slab 20 cm | 20 m² | 250.00 CHF | 8.1 % | 5 000.00 CHF | 5 405.00 CHF |
| Continuous footing concrete 45×25 cm | 20 ML | 160.00 CHF | 8.1 % | 3 200.00 CHF | 3 459.20 CHF |
| Overlay screed 5 cm | 30 m² | 78.00 CHF | 8.1 % | 2 340.00 CHF | 2 529.54 CHF |
| Wall in hollow concrete blocks 20 cm | 55 m² | 105.00 CHF | 8.1 % | 5 775.00 CHF | 6 244.78 CHF |
| Concrete chain 20×20 cm | 15 ML | 68.00 CHF | 8.1 % | 1 020.00 CHF | 1 102.62 CHF |
| Corner block chain 20 cm | 16 ML | 49.00 CHF | 8.1 % | 784.00 CHF | 847.50 CHF |
| Lintel block 20 cm | 2 ML | 78.00 CHF | 8.1 % | 156.00 CHF | 168.64 CHF |
| Support 30 cm | 2 ML | 185.00 CHF | 8.1 % | 370.00 CHF | 399.97 CHF |
| Wooden floor 15.5 cm | 20 m² | 210.00 CHF | 8.1 % | 4 200.00 CHF | 4 539.02 CHF |
| One-coat render – facade finish | 55 m² | 92.00 CHF | 8.1 % | 5 060.00 CHF | 5 470.86 CHF |
| WATERPROOFING ROOF-TERRACE – Switzerland | |||||
| Two-layer waterproofing with gravel – inaccessible terrace | 0 m² | 215.00 CHF | 8.1 % | 0.00 CHF | 0.00 CHF |
| Two-layer waterproofing with slabs – accessible terrace | 20 m² | 290.00 CHF | 8.1 % | 5 800.00 CHF | 6 269.80 CHF |
| FURNISHING – PARTITIONING / FALSE CEILING (Switzerland) | |||||
| Ceiling 1 panel 13 mm | 20 m² | 82.00 CHF | 8.1 % | 1 640.00 CHF | 1 772.84 CHF |
| Partition 72 mm – distribution partition | 10 m² | 98.00 CHF | 8.1 % | 980.00 CHF | 1 059.38 CHF |
| Counter-partition 13 mm | 45 m² | 70.00 CHF | 8.1 % | 3 150.00 CHF | 3 405.15 CHF |
| Mineral wool 100 mm – insulation walls/ceilings | 65 m² | 23.00 CHF | 8.1 % | 1 495.00 CHF | 1 615.10 CHF |
| Interior door frame with post-formed door | 1 U | 370.00 CHF | 8.1 % | 370.00 CHF | 399.97 CHF |
| COATING / PAINTING – Work in Switzerland | |||||
| Complete painting walls/ceilings – finish | 85 m² | 40.00 CHF | 8.1 % | 3 400.00 CHF | 3 676.00 CHF |
| WALL TILING – Switzerland | |||||
| Waterproofing system under tiles | 20 m² | 26.00 CHF | 8.1 % | 520.00 CHF | 562.12 CHF |
| Tile wall installation... | |||||
Extension Budget by Type of Construction in Switzerland
The chosen expansion method greatly influences the total cost. Each configuration has specific advantages and variable rates depending on the technical constraints encountered in Switzerland.
Price of a Conservatory in Switzerland
The conservatory is often the most accessible extension solution in Switzerland. For an area of 20 m², expect 15,000 to 35,000 CHF.
Aluminum models start around 800 CHF/m², while wooden versions are around 1,200 CHF/m².
High-end conservatories, equipped with insulated roofs and high-performance glazing, can exceed 1,500 CHF/m² in Switzerland.
This type of extension allows for a quick increase in living space while offering a very good value for money.
Installation generally involves a concrete slab and some electrical connections, elements to be included in your budget in Switzerland.
Cost of an Attached Garage in Switzerland
An attached garage represents a budget ranging from 8,000 to 25,000 CHF, depending on the area and services chosen.
For a 20 m² garage, prices range between 400 and 800 CHF/m².
Versions equipped with a motorized door, complete insulation, and advanced finishes easily reach 1,000 CHF/m² in Switzerland.
If you add an additional level for storage, the cost generally increases by 30 to 50 %.
This type of extension enhances the value of your property in Switzerland while providing secure parking space.
The construction requires suitable foundations, ventilation, and connections, to be considered in your budget envelope.
Price Assessment Based on Project Complexity in Switzerland
The degree of technical difficulty directly influences the total amount of your extension in Switzerland. Any structural intervention or significant architectural modification incurs additional expenses.
Simple Extension Without Structural Modification
When an extension is attached to the house without impacting the load-bearing structure, it is the most affordable option in Switzerland. Expect between 1,000 and 1,400 CHF/m².
This method mainly involves opening the existing wall and constructing the adjoining part, without altering the original foundations.
It is an ideal solution for enlarging a kitchen, creating a bedroom, or installing a workspace.
Deadlines are generally short, reducing nuisances and additional costs in Switzerland.
Extension Involving Roof Modification
Adapting the roof to integrate the new space results in an increase of 20 to 40 % in the overall price in Switzerland. For these more elaborate projects, the budget ranges between 1,400 and 2,000 CHF/m².
This approach requires the intervention of experts, as it includes partial removal of the covering, adjustment of the framework, and creation of perfectly watertight joints.
Even though the cost is higher, this solution ensures a harmonious integration with the existing structure and better valuation of your home in Switzerland.
During the work, enhanced protection against Swiss rain and weather is essential.
The administrative procedures and their impact on the budget in Switzerland
Administrative formalities also represent an expense item in the context of an extension in Switzerland.
A preliminary application incurs costs of approximately 150 CHF, while a building permit, required beyond a certain volume, can cost up to 760 CHF, depending on the municipality.
The involvement of an architect becomes mandatory if the extension brings the total living area beyond 150 m², which adds 8 to 12 % to the overall budget.
Some areas also require a soil study, charged between 1,000 and 2,500 CHF, depending on the nature of the Swiss terrain.
Moreover, some municipalities impose specific aesthetic or technical rules that can increase the cost of materials and the complexity of the site.
Why choose our general company for your extension in Switzerland?
The choice of provider directly influences the success of your expansion in Switzerland.
Avenir Rénovations simplifies the entire process with a comprehensive solution: design, preparation, and execution integrated into a single structure.
No need to manage multiple parties! Our unique team ensures smooth coordination and optimizes costs through our direct partnerships with Swiss suppliers.
Unlike some architects who subcontract the work, we control every phase of the project to ensure an impeccable level of quality.
This centralized management reduces errors, eliminates defects, and guarantees adherence to your deadlines as well as your initial budget in Switzerland.
Guarantees and support after your extension in Switzerland
Avenir Rénovations stands out for its high level of requirements to protect your investment in Switzerland.
Our ten-year warranty covers defects that could compromise the strength or normal use of your extension. You thus benefit from total protection and absolute peace of mind.
In case of imperfections, our intervention is quick, complete, and transparent.
The guarantee of perfect completion, valid for one year, allows for the correction of all minor anomalies related to finishes in Switzerland.
Unlike other companies that multiply maintenance contracts, we focus on impeccable execution to ensure the durability of your expansion.
With Avenir Rénovations in Switzerland, you enjoy a controlled project, with no hidden costs and no unpleasant surprises.
Tips to optimize the budget of your extension in Switzerland
Our company transforms your budget into a real asset thanks to in-depth expertise of the Swiss market.
Your Project Manager studies your project for free to determine the most advantageous solutions:
- optimized dimensions,
- high-performance materials at the best quality-price ratio,
- strategic organization of the site.
Our knowledge of Swiss suppliers allows us to negotiate exclusive rates, inaccessible to individuals.
We also offer modular options to adapt your investment to your financial capabilities.
Our transparent quotes guarantee total visibility on your project in Switzerland.
With Avenir Rénovations, optimizing your budget becomes simple: we maximize every franc invested to realize the extension you envision.
