Hauptstrasse 73

9434 Au SG, St. Gallen

Rooms

5.5 rooms

Living area

193 m²

Type

Attic flat

Price per m²

CHF 4’482/m²

On Alpine Market since

10 Jul 2026

Description

5.5 Zimmer Maisonette-Wohnung mit grosszügigen Grundriss Die Wohnüberbauung «Central» fördert ein a…

Estimated monthly payment

CHF 1’811/month

10-year fixed · 1.89% per year

moneyland.ch Swiss Mortgage Index, average 10-year fixed rate, as of 6 Aug 2026

CHF 1’274/month

SARON · 0.96% per year

SNB SARON fixing (-0.04 percent, 2026-09-03) plus a published bank SARON margin of 1.00 percent via moneyland.ch, as of 6 Sep 2026

Assumes 20% down, a first mortgage up to 65% of the price with no amortisation, and the portion above 65% amortised over 15 years. Interest only, before tax.

Lender affordability test

CHF 4’325/month

Swiss lenders test a loan at an imputed 5% interest rate plus 1% of the price a year for upkeep, plus amortisation. This is the test figure, not what you would pay.

Adjust the assumptions

Purchase price (CHF)

Down payment (%)

Interest rate (% per year)

Monthly charges (CHF)

Condominium charges and other running costs, if you know them.

Amortise the second mortgage over 15 years

Your rate · 1.89% per year

CHF 1’811/month

Interest:: CHF 1’090/month
Amortisation:: CHF 721/month
Charges:: CHF 0/month
First mortgage:: CHF 562’250
Second mortgage:: CHF 129’750

An illustration, not an offer. Real rates depend on the lender, the property and your own situation. Nothing you enter here is saved.

Price history

10 Jul 2026CHF 865’000Initial price

Sale history

No recorded sale history shown yet. Swiss registers publish transfers by land parcel rather than by street address, so linking them to an individual property needs cadastral data we are still adding.

Market activity

Listed on immostreet
For sale
10 Jul 2026

Sources and confidence

Federal building register (EGID)Official
1084823
Source: Federal Office of Topography swisstopo (from BFS GWR/RegBL)Licence: OGD (opendata.swiss terms: free use with source attribution, commercial use permitted)
99% confidence
Official AddressOfficial
Hauptstrasse 73, 9434 Au SG
Source: Federal Office of Topography swisstopo (from BFS GWR/RegBL)Licence: OGD (opendata.swiss terms: free use with source attribution, commercial use permitted)
99% confidence