Bathroom renovation in Switzerland: a complete 2026 guide

Renovating a bathroom is one of the most common jobs in Swiss homes, and one of the hardest to coordinate. Plumbing, electrics, tiling, ventilation, sanitaryware: many trades are involved. This practical guide helps you plan your project, understand what influences your budget and choose the right tradespeople in French-speaking Switzerland.

Stages of a bathroom renovation in Switzerland

A successful renovation follows a precise sequence. Here are the main stages in chronological order:

1. Design and plans

Before any work starts, define your project precisely: where the fittings go, the style you want, the budget available. For spacious bathrooms, or if you are substantially changing the sanitary layout, calling in an architect or an interior designer is often wise. Plans help avoid costly mistakes during the works.

In Switzerland, the SIA 500 standard recommends certain accessibility standards (a minimum door width of 80 cm, turning space for a wheelchair) that are worth building in from the design stage, even if your home is not legally subject to them: an accessible bathroom is an asset when you sell.

2. Demolition and structural work

Demolition covers removing the existing tiles, non-load-bearing partitions, sanitaryware and taps. Its cost depends on the floor area, the number of layers of covering to be removed, how easy the home is to access (floor level, lift) and the volume of rubble to be taken away. Depending on the canton and municipality, a waste-disposal fee may apply.

Note: if the work affects water risers or load-bearing walls, coordination with the building manager or the condominium (PPE) administrator is essential. In some cantons (Geneva in particular), major demolition work requires prior notification to the municipality.

3. Plumbing and pipework

Plumbing is often the largest item in a bathroom renovation. Its cost varies with the length of concealed pipework, the number of water points, the quality of the taps and the connections to be redone. It rises if the risers have to be replaced or if the sanitary layout changes, because walls and floors then have to be reopened.

The Swiss SIA 385/1 standard sets out requirements for domestic hot water installations, notably to prevent legionellosis (a minimum of 60°C at the point of production, 55°C on the return). New installations must respect these temperatures.

4. Electrics

Bathrooms are subject to strict electrical requirements in Switzerland under the NIBT (SEV 1000) standard. The whole installation must be carried out by a licensed electrician. The key points to respect:

• A 30 mA residual-current device is mandatory for all bathroom circuits
• Protection zones around the shower or bath (zones 0, 1, 2 under NIBT)
• No electrical socket within 60 cm of a shower tray or a bath
• Controlled mechanical ventilation (VMC) or a ventilation grille is required under cantonal regulations

The cost of the electrics depends on the number of light fittings and sockets, the condition of the electrical panel, the length of cabling to be run and the type of lights chosen. An old panel that must be brought up to standard can push this item up.

5. Tiling and waterproofing

Tiling makes up a large share of the total budget of a bathroom renovation. Before laying, a waterproofing layer (waterproof screed or a membrane such as SIGA or Schlüter) is essential in wet areas (shower, tray, around the bath). This stage is often underestimated but is critical to prevent leaks.

Several factors affect the cost of this stage:

• The size and quality of the tiles: large formats, natural stone or special tiles require more care and laying time.
• Preparing the substrates: an uneven wall or screed must be corrected before laying.
• The type of shower or bath: a walk-in shower requires careful waterproofing and a careful slope, which is more complex than a simple tray.
• The type of WC: a wall-hung WC with a support frame needs specific casing and connections.
• The furniture: a made-to-measure vanity unit differs from a standard model in both price and installation.

6. Ventilation

Adequate ventilation is mandatory in bathrooms without a window and strongly recommended in all Swiss bathrooms, where humidity and condensation encourage mould. A humidity-sensing extractor fan (triggered by the humidity level) remains the most effective solution. Its cost depends on the model, the length of the exhaust duct and how easily it can be routed through the building structure.

What makes the overall budget vary

There is no standard budget: every bathroom is a particular case. The main factors behind the differences are:

• The level of renovation: a light renovation (paint, taps, accessories) involves few trades; a full renovation involves several and costs more still if the sanitaryware is moved.
• The floor area and layout of the room, which determine the quantity of materials and the working time.
• The condition of what is already there: ageing pipes, damaged walls or traces of damp can reveal unexpected work during demolition.
• The range of fittings: entry-level, mid-range or high-end, the gaps are considerable for sanitaryware, taps and tiles.
• The region and the season: urban areas are generally more expensive than rural areas or less urban cantons such as Jura or Upper Valais, and demand is higher in summer.
• Access constraints: a high floor, no lift or difficult parking increase the time on site.

To get a reliable estimate, ask for several detailed quotes, item by item, and compare what they actually include (rubble removal, supplies, finishes, cleaning). Also allow a margin for the unexpected, which is common in older buildings.

Choosing the right tradespeople for your renovation

A bathroom renovation generally involves at least:

• A plumber (CFC, the Swiss federal vocational certificate, as a sanitary installer)
• A licensed electrician (NIBT)
• A tiler (may be included with the plumber or subcontracted)

You can hire each tradesperson separately (more coordination falls to you) or entrust everything to a general renovation company that subcontracts the trades (simpler, but with a coordination margin to allow for). For large projects, a general contractor relieves you of all the coordination.

Before signing, check for yourself each company’s references, its entry in the commercial register, its liability insurance and the warranty terms set out in the quote. A written, precise, dated quote protects both parties in the event of a dispute.

Timing and planning the works

Planning is key. Tradespeople are often booked several weeks ahead in French-speaking Switzerland. Allow for:

• Preparation time to obtain quotes, compare them and order materials
• Several weeks of actual work, with a possible break between plumbing and finishing
• A drying time for joints and waterproofing before the tiles are laid

So plan your renovation several months ahead, especially if you are aiming for the summer, a very busy period for tradespeople in French-speaking Switzerland. Remember also to inform your neighbours and, in an apartment building, the property manager or administrator, to agree working hours and access to shared risers.

Requesting quotes for your project

Once your project is defined, you can describe your needs and compare offers from several professionals in your area. For the trades involved, see our pages on plumbers and electricians. The more precise your description (floor area, current condition, desired fittings, timetable), the more comparable the quotes you receive will be.