Estimate renovation costs in Gossau (SG)

Local housing stock

In Gossau (SG), the federal building register lists 2'643 residential buildings and 8'926 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.

58 %built before 1980

60 %heated by oil or gas

16.5 %electric hot water

4.3 %with declared solar thermal

Age of residential buildings

58 % built before 1980

Before 191922 %
1919–19454 %
1946–196010 %
1961–19709 %
1971–198013 %
1981–199011 %
1991–200013 %
2001–20108 %
Since 20119 %

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

Main heating energy

35 % · Gas

Gas35 %
Heat pump31 %
Heating oil25 %
Wood6 %
Electricity2 %

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

Heating and hot water: which energies?

Energy	Heating	Hot water
Gas	35 %	28.5 %
Heating oil	25 %	17.1 %
Heat pump	31 %	30.6 %
Electricity	2 %	16.5 %
Wood	6 %	2.6 %
Solar thermal	0 %	4.3 %

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)64.4 %
Heat pump31.2 %
Central electric heating2.2 %
Condensing boiler1.4 %

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

Houses or apartment buildings?

Single-family houses56.5 %
Two-dwelling houses9.8 %
Apartment buildings (3+)33.7 %

14.8 % of buildings mix housing with shops or offices.

The typical building

storeys (median): 3
median footprint: 135 m²
median dwelling area: 95 m²

Dwellings by number of rooms

2.9 %1 rm

10.8 %2 rm

25.3 %3 rm

34.1 %4 rm

26.8 %5+ rm

Dwellings per building

1 dwelling56.6 %
2 to 418.1 %
5 to 919.1 %
10 to 195.3 %
20 or more0.9 %

Renovations, heritage and volumes

For your renovation projects in Gossau, the RegBL data provides essential guidance despite partial coverage. Among the 2643 total buildings, 44 have known heritage status, with 18 officially protected; you should contact the municipality early to discuss permit requirements. Regarding building volume, the median figure is 795 m3, which helps determine the scale of potential heating or insulation work. Please note that this volume metric is based on only 9 measured buildings, as 1485 properties rely on different or unknown standards. Utilizing these figures allows you to plan your renovation more effectively while respecting local requirements.

18

buildings flagged as protected

status known for 44 of 2'643 buildings; check with the municipality

795 m³

median house volume (SIA 416)

measured for 9 of 1'494 houses

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

Renovating in Gossau (SG): what to know

Planning works in Gossau (SG), canton of St. Gallen? 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 Gossau (SG)