CityHero

The 45 best construction companies in St. Gallen

avg 4.6 ★ · ranked by Hero Score · How do we rank?

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The podium

Key facts

CityHero lists 45 construction companies in St. Gallen (as of October 2026), averaging 4.6 out of 5 Google stars. Number 1 in the Hero Score is Walder Abdichtungstechnik GmbH (5.0 stars, 30 reviews).

Listings
45
Avg. Google rating
4.6 / 5
No. 1 Hero Score
Walder Abdichtungstechnik GmbH
Reviews in total
221
1 more fact
Rated 4.5+
68 %

Source: CityHero directory, ratings via Google · as of October 2026.

Construction Companies in St. Gallen: what to know

In St. Gallen CityHero lists 45 construction Construction Companies – from new builds and conversions to full renovations. Compare companies by rating, references and availability, then request a quote directly from the ones that fit. On average that's 4.6 out of 5 stars, with addresses in 9000 St. Gallen, 9008 St. Gallen and 9016 St. Gallen and beyond. Top-rated: Walder Abdichtungstechnik GmbH. Always ask for a detailed written quote with a clear breakdown of materials, labour and additional costs, plus a binding schedule – this keeps both budget and build time predictable.

Related categories in St. Gallen

Construction Companies in nearby towns

Construction Companies by neighbourhood in St. Gallen

Grouped by postcode – areas with the most listings first.

Construction Companies in 9000 St. Gallen

+ 10 more in the full list

Construction Companies in 9008 St. Gallen

Construction Companies in 9016 St. Gallen

Construction Companies in 9015 St. Gallen

Frequently asked questions

How many construction companies are there in St. Gallen on CityHero?

CityHero currently lists 45 construction companies in St. Gallen, rated 4.6 out of 5 stars on average, with addresses in 9000 St. Gallen, 9008 St. Gallen and 9016 St. Gallen and beyond. Currently top-rated: Walder Abdichtungstechnik GmbH.

Which parts of St. Gallen have the most construction companies?

Counted by postcode, most listings are in 9000 St. Gallen: 22, 9008 St. Gallen: 6 and 9016 St. Gallen: 6. The neighbourhood sections on this page show the addresses for each area.

How do I find a reliable construction company in St. Gallen?

Look at customer reviews, concrete reference projects and a transparent quote. On CityHero you can compare 45 firms in St. Gallen by rating and request non-binding quotes to weigh price against service.

Should I get up to two quotes for my building project?

Yes, up to two quotes reveal the realistic price range and differences in what's included. With CityHero you send one enquiry to up to two construction Construction Companies in St. Gallen at once and receive up to two comparable offers.