Buy · Apartment
RTAG Immobilien & Treuhand 3.5-Zimmer-Wohnung
9434 Au SG · Approximate location: postcode 9434
On Heimster since 13 October 2026 · last checked 23 October 2026
- Price
- CHF 390’000
- CHF 6’724 per m²
- Rooms
- 3.5
- Area
- 58 m²
- Type
- Apartment
Photos, description and documents are on RT Immobilien Treuhand AG’s website. Heimster shows the key facts – and everything we know about the location.
What is within walking distance.
The agency only names postcode 9434 – so we don’t show distances from the building.
At this address.
Modelled values from public data sources – an estimate, not a guarantee.
Microclimate
1’667
Sunshine hours / year (region)
35
Fog days / year
60
Summer days ≥25°C
60
Snow days / year
Ø 10.4°C · July 19.5°C · January 1.4°C · precipitation 1190 mm/year
Climate values: MeteoSwiss climate normals 1991–2020 (1 km grid for temperature + precipitation; sunshine from the NBCN network, IDW-interpolated; summer, frost and snow days derived from grid temperatures). Individual values may differ.
How the price compares.
Vacancy rate in Au
1.53 %
Figures 2026, Leerwohnungszählung.
Income and wealth tax on a CHF 100,000 income in Au (SG)
CHF 10’260
Price comparison
CHF 6’724 /m² – compared with 39 comparable offers within 5 km
This listing
CHF 6’724
Average
CHF 8’968
Median
CHF 8’258
Number of comparable listings
CHF /m²
What buying costs per year.
- Equity (20%)
- CHF 78’000
- Mortgage (80%)
- CHF 312’000
- Imputed cost per year
- CHF 22’967
- Gross income needed
- CHF 68’900
Banks’ rule of thumb: 5% imputed interest, 1% maintenance and amortisation to two thirds of the value within 15 years; the costs should not exceed a third of income. Your bank calculates individually.
