Bathroom renovation · Renens

Complete Guide: Bathroom Renovation in Renens

Are you planning a bathroom renovation in Renens? This guide walks you through the steps to successfully complete your project while respecting local building characteristics.
Bathroom renovation – Renens

At a glance

Typical budget
CHF 17'200 – CHF 46'100
Midpoint
CHF 28'700
Grants found
0
Nearby companies
4

Worked examples in Renens

Small project

CHF 12'700 – CHF 35'200

Typical project

CHF 17'200 – CHF 46'100

Large project

CHF 24'700 – CHF 64'400

ProjectQuantityLowHigh
Small project3 m²CHF 12'700CHF 35'200
Typical project6 m²CHF 17'200CHF 46'100
Large project11 m²CHF 24'700CHF 64'400

Computed with our estimator for Renens (regional factor included), standard finish. Only the project size changes.

Cost split (typical project)

  • Labour : CHF 15'800 (55 %)
  • Materials : CHF 10'000 (35 %)
  • Other costs : CHF 2'900 (10 %)

What the price covers

Included

  • Supply and installation
  • VAT
  • Preparation, floor and wall finishes, standard plumbing and electrical work
  • Fixtures, mirrors, accessories and removal according to answers or listed assumptions

Not included

  • Permits and architect fees
  • Unexpected structural issues
  • Possible subsidies
  • Major utility relocation, floor reinforcement or structural alterations for walk-in showers

Renens's housing stock in figures

In Renens, the federal building register lists 1'639 residential buildings and 11'420 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.

58 %built before 1980
83 %heated by oil or gas
7.5 %electric hot water
7.6 %with declared solar thermal

Age of residential buildings

58 % built before 1980

  • Before 19198 %
  • 1919–194513 %
  • 1946–196019 %
  • 1961–197010 %
  • 1971–19808 %
  • 1981–199016 %
  • 1991–20008 %
  • 2001–201010 %
  • Since 20118 %

Construction year does not reveal past renovations: check the current insulation condition.

Main heating energy

53 % · Gas

  • Gas53 %
  • Heating oil30 %
  • District heating8 %
  • Electricity5 %
  • Heat pump4 %
  • Wood1 %

This distribution describes recorded buildings, not your system's consumption or efficiency.

Dwellings by number of rooms

13.4 %1 rm
26.5 %2 rm
32 %3 rm
19.7 %4 rm
8.5 %5+ rm

Dwellings per building

  • 1 dwelling46.6 %
  • 2 to 417.2 %
  • 5 to 910.3 %
  • 10 to 1917.5 %
  • 20 or more8.4 %

Renovations, heritage and volumes

For homeowners in Renens, RegBL figures provide essential benchmarks for planning your renovations. While the status of heritage protection is known for 114 buildings, with one officially protected, contacting the municipality early is vital to navigate permit requirements. The median building volume of 800 m3, derived from 123 houses measured under the SIA 416 standard, helps estimate the scale of necessary heating or insulation upgrades. Please be aware that data coverage is partial, as 599 buildings utilize other or unknown standards, which is a key factor to consider when evaluating the scope and budget of your renovation project.

1
buildings flagged as protected
status known for 114 of 1'579 buildings; check with the municipality
800 m³
median house volume (SIA 416)
measured for 123 of 722 houses

Source : Registre fédéral des bâtiments et des logements (RegBL), OFS, 2026. Existing residential buildings; percentages of recorded values.

Why and when to undertake these works in Renens

Renovating your bathroom in Renens is a strategic decision to add value to your property located at an altitude of 420 meters.5 °C, your plumbing fixtures are under heavy demand.

A renovation helps improve thermal insulation and overall energy efficiency, limiting heat loss in a region where heating needs are significant.

The ideal time to plan these works is outside of extreme cold periods, even if interior comfort is your priority.

By improving material quality and room sealing, you protect the building structure from moisture, a key factor for the durability of the housing stock.

Anticipating your works also allows you to coordinate technical interventions with water network maintenance schedules, ensuring a smoother transition for your household.

Technical choices that influence the project

When renovating your bathroom in Renens, several technical parameters influence the project's progress. A common choice is replacing a bathtub with an Italian-style walk-in shower, which requires a careful check of the drainage slope available in your floor.

This change may require more significant structural adjustments than expected depending on your home's configuration.

The choice of materials is also paramount for longevity. Although the water supplied is considered soft (hardness of 14 °f), it is recommended to prioritize surfaces that are easy to maintain to keep your fixtures looking new.

Quality levels vary from standard installations to high-end designs incorporating flow control systems or specific coatings. Keep in mind that a complete project generally requires 2 to 4 weeks of work during which the bathroom will be unusable.

Rigorous planning of these technical stages is the key to the success of your transformation.

Specificities of local buildings according to the era of construction

The housing stock in Renens shows variations depending on the era of construction, directly influencing your renovation work.

Buildings dating back to before the 1990s require increased vigilance, particularly regarding the potential presence of hazardous materials such as asbestos in old wall coverings, tile adhesives, or sealing joints.

Prior expertise is recommended to identify these risks before starting any demolition work.

Furthermore, the structure of wastewater and water supply networks can vary significantly in older buildings. It is common to find pipes that require compliance with current standards to ensure sealing and proper flow.

In buildings from previous decades, thermal insulation is often less efficient, which justifies integrating improvements to air tightness around windows or cold walls during the bathroom renovation.

A thorough analysis of the conduit status is an essential step to avoid surprises when installing new sanitary equipment in your home in Renens.

Authorizations, rules and heritage in Renens

This guide does not establish a permit exemption. If your building or area is protected, check the constraints specific to your project.

Financial aid and taxation

However, if your work includes energy efficiency measures, such as improving insulation or replacing water heaters, inquire about available cantonal and communal programs.

The golden rule is always to submit your aid application before starting the work to hope for financial support.

Regarding taxation, the communal tax coefficient of Renens is set at 77. Although renovation work is often considered as maintenance expenses deductible from your taxable income, it is recommended to keep all your invoices and proof of payment.

This deduction can lighten the actual cost of your work. Consult a tax advisor to precisely assess the impact of your investments on your tax return.

Remember that compliance with local guidelines is the sine qua non condition for validating any deduction or grant, so ensure you document every step well.

Schedule: Typical project flow

The renovation of a bathroom in Renens follows a logical order to optimize time and the final result. Everything begins with the planning phase and material selection.

Once the schedule is validated, the site starts with the protection of adjacent areas followed by the demolition and evacuation of old equipment.

Next comes the crucial stage of plumbing and electrical work, where network compliance is adjusted to match your new needs and current standards.

The following steps concern the screed, waterproofing, then laying wall and floor coverings. Particular attention must be paid to waterproofing in wet areas, as it prevents future infiltration.

Finally, the project ends with the installation of sanitary fixtures, faucet finishes, and complete cleaning. Although the duration varies, plan for a period during which the bathroom will be out of service.

Choosing a period outside of extreme cold can be more comfortable for the artisans, even if the indoor work remains protected.

Frequent mistakes to avoid and checklist before requesting quotes

To succeed in your project in Renens, it is imperative to avoid certain common mistakes. Never neglect to check the drainage slope when replacing a bathtub with a shower.

Also, make sure to plan adequate lighting and ventilation from the start, as these elements are often underestimated in small spaces. Avoid choosing materials solely for their visual appearance, prioritizing durability and ease of maintenance given daily use.

Before requesting quotes, prepare a precise checklist : list your priority needs, determine your overall budget, and check the necessity of an asbestos assessment if your building is old.

Always request several comparative quotes detailing the work, materials, and deadlines. Verify that each company offers warranties and possesses the necessary qualifications.

By following these steps, you minimize the risk of budget overruns and ensure total peace of mind throughout your renovation in Renens.

Your project in 5 steps

  1. 1. Estimate

    Set a budget range with the estimator.

  2. 2. Grants

    Apply before work starts.

  3. 3. Quotes

    Compare at least 3 quotes.

  4. 4. Permit

    Check with the municipality whether a permit is needed.

  5. 5. Works

    Follow the site and do a written handover.

Grants and subsidies

No specific grant listed for this work. Maintenance tax deductions may still apply.

Companies in the area

Fluides Concepts SA

1020 Renens VD · about 0 km

French-Swiss company specialized in engineering and technical installation of plumbing, heating, ventilation systems, and tinsmithing for buildings.

fluides-concepts.com

Lumi'Elec VD SA

1020 Renens VD · about 0 km

Company specializing in electrical installations, maintenance, and renovation projects for residential and commercial sectors.

lumielec.ch

Redowa Sàrl

1020 Renens VD · about 0 km

Renens-based company specializing in interior architecture, design, and full renovation of residential buildings.

redowa.ch

Ab-twind Sàrl

1020 Renens VD · about 0 km

Specialist in ventilation system installation and maintenance, as well as comprehensive cleaning services for residential and commercial buildings.

ab-t.ch

Suggestions from the commercial register by distance and activity. Not an endorsement or partnership.

Frequently asked questions

Do I need to request authorization to renovate my bathroom in Renens?

If the work is strictly interior and does not modify the structure, no authorization is necessary. In case of doubt regarding building protection, consult the municipality.

What is the average duration of such a project?

Generally count between 2 and 4 weeks of work. The duration depends on the complexity of the technical modifications planned.

Should I worry about water hardness in Renens?

No, the supplied water is soft with a hardness of 14 °f. This facilitates the maintenance of your faucets and limits limescale deposits.

Can one obtain financial aid for an aesthetic renovation?

Aid is rare for pure aesthetics. Focus on programs centered on energy efficiency, by submitting your file before starting work.

What are the risks in old buildings?

The main risk concerns the potential presence of asbestos in old coverings. Prior expertise is strongly recommended.

How to avoid slope errors when installing a shower?

Imperatively check the floor configuration and existing drainage with a professional. This is the crucial step to ensure proper flow.

Is renovation work tax-deductible?

Maintenance work is generally deductible from taxable income. Carefully keep all your invoices to justify these expenses.

Useful local data

Drinking water

  • Supplier : Service de l'eau de la Ville de Lausanne
  • Hardness class : douce
  • Water hardness (°fH) : 14

Housing stock

  • Note : Les sources fournies contiennent des statistiques générales pour la Suisse et les cantons de Vaud et Fribourg, mais ne contiennent pas de données spécifiques pour la commune de Renens.

Tax

  • Note : The communal tax coefficient for Renens is 77. The source does not specify the year for this coefficient, stating only 'Les données se basent sur les listes cantonales'.
  • Municipal tax coefficient (%) : 77

Source : raiffeisen.ch

Works often combined in Renens

Other works in Renens

Bathroom renovation in nearby towns