Estimate renovation costs in Au (SG)

Local housing stock

In Au (SG), the federal building register lists 1'541 residential buildings and 4'070 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.

54 %built before 1980

60 %heated by oil or gas

17.6 %electric hot water

6.5 %with declared solar thermal

Age of residential buildings

54 % built before 1980

Before 19197 %
1919–19456 %
1946–196012 %
1961–197015 %
1971–198014 %
1981–19909 %
1991–200014 %
2001–201010 %
Since 201114 %

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

Main heating energy

38 % · Heat pump

Heat pump38 %
Gas32 %
Heating oil28 %
Wood2 %
Electricity1 %

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

Heating and hot water: which energies?

Energy	Heating	Hot water
Gas	32 %	21.3 %
Heating oil	28 %	21.2 %
Heat pump	38 %	32.8 %
Electricity	1 %	17.6 %
Wood	2 %	0.3 %
Solar thermal	0 %	6.7 %

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)60.4 %
Heat pump37.5 %
Condensing boiler0.9 %
Central electric heating0.8 %

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

Houses or apartment buildings?

Single-family houses71.5 %
Two-dwelling houses6.7 %
Apartment buildings (3+)21.8 %

10.1 % of buildings mix housing with shops or offices.

The typical building

storeys (median): 2
median footprint: 127 m²
median dwelling area: 94 m²

Dwellings by number of rooms

3.1 %1 rm

14.8 %2 rm

23.2 %3 rm

30.5 %4 rm

28.5 %5+ rm

Dwellings per building

1 dwelling71.5 %
2 to 412.1 %
5 to 99.9 %
10 to 195.6 %
20 or more0.8 %

Renovations, heritage and volumes

For your renovation projects in Au, data from the federal building register indicates that at least 9 buildings are subject to heritage protection, requiring early coordination with the municipality to secure necessary permits. Please note that data coverage is partial for certain indicators: information regarding the year of renovation and building volume according to the SIA 416 standard is not available in the current records. We advise you to verify these technical specifications directly with local authorities before proceeding with modernization plans or insulation upgrades to ensure your project aligns with municipal requirements and building standards.

9

buildings flagged as protected

status known for 83 of 1'541 buildings; check with the municipality

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

Renovating in Au (SG): what to know

Planning works in Au (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 Au (SG)