Estimate renovation costs in Grenchen

Local housing stock

In Grenchen, the federal building register lists 3'013 residential buildings and 10'413 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.

68 %built before 1980

81 %heated by oil or gas

17.1 %electric hot water

1 %with declared solar thermal

Age of residential buildings

68 % built before 1980

Before 191910 %
1919–194516 %
1946–196024 %
1961–197011 %
1971–19807 %
1981–199010 %
1991–20008 %
2001–20105 %
Since 20119 %

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

Main heating energy

52 % · Gas

Gas52 %
Heating oil29 %
Heat pump15 %
Wood3 %
Electricity1 %

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

Heating and hot water: which energies?

Energy	Heating	Hot water
Gas	52 %	50.8 %
Heating oil	29 %	22.2 %
Heat pump	15 %	7.3 %
Electricity	1 %	17.1 %
Wood	3 %	1.5 %

Each line gives the share of buildings using that energy, separately for heating and for hot water. The two columns do not always reach 100%: some buildings combine two systems, or reported none.

Type of heating system

Boiler (unspecified)80.5 %
Heat pump14.8 %
Condensing boiler2.3 %
Central electric heating1 %
Stove1 %

A standard non-condensing boiler is usually older and less efficient.

Houses or apartment buildings?

Single-family houses53.6 %
Two-dwelling houses11.9 %
Apartment buildings (3+)34.4 %
Other0.1 %

9.9 % of buildings mix housing with shops or offices.

The typical building

storeys (median): 3
median footprint: 125 m²
median dwelling area: 87 m²

Dwellings by number of rooms

4.9 %1 rm

14.6 %2 rm

34.4 %3 rm

29.6 %4 rm

16.5 %5+ rm

Dwellings per building

1 dwelling53.7 %
2 to 423.8 %
5 to 914.7 %
10 to 196 %
20 or more1.8 %

Renovations, heritage and volumes

For your renovation projects in Grenchen, the official RegBL figures provide essential insights despite partial data coverage. With 4 buildings listed under heritage protection, it is crucial to contact the municipality early to navigate permit requirements. The median building volume of 755 m3, derived from a limited set of 4 measurements, helps define the scale for your insulation or heating upgrade plans. Since renovation years are not recorded and volumetric data is sparse, conducting an on-site assessment remains a necessary step to ensure your renovation budget and planning are accurate and reflective of your specific property.

4

buildings flagged as protected

status known for 177 of 3'013 buildings; check with the municipality

755 m³

median house volume (SIA 416)

measured for 4 of 1'616 houses

Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.

Renovating in Grenchen: what to know

Planning works in Grenchen, canton of Solothurn? Before requesting quotes, local context helps: climate drives the value of insulation and heating, cantonal rules govern boiler replacement, and tax deductions can noticeably reduce the bill.

Renovation works in Grenchen