Optimal Isolierungen GmbH
5.0(6)Ackerstrasse 16, 8302 Kloten
The 4 best construction companies in Kloten
avg 4.6 ★ · ranked by Hero Score · Updated 21 October 2026 · How do we rank?
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4 results
The podium
stimo Generalunternehmung AG
4.3(23)Lindengartenstrasse 6, 8302 Kloten
Key facts
CityHero lists 4 construction companies in Kloten (as of October 2026), averaging 4.6 out of 5 Google stars. Number 1 in the Hero Score is Optimal Isolierungen GmbH (5.0 stars, 6 reviews). The highest Google rating (with at least 20 reviews) belongs to stimo Generalunternehmung AG (4.3 stars, 23 reviews).
- Listings
- 4
- Avg. Google rating
- 4.6 / 5
- No. 1 Hero Score
- Optimal Isolierungen GmbH
- Best Google rating
- stimo Generalunternehmung AG · 4.3
1 more fact
- Reviews in total
- 63
Source: CityHero directory, ratings via Google · as of October 2026.
Construction Companies in Kloten: what to know
Anyone building, converting or renovating in Kloten faces one key question: which company to trust with the project. Our overview lists 4 construction Construction Companies in the area and makes them easy to compare. On average that's 4.6 out of 5 stars. Top-rated: Optimal Isolierungen GmbH. Verify references from completed projects, insurance cover (construction liability) and whether the firm is familiar with local subcontractors and authorities in Kloten – this helps avoid delays with permits.
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Frequently asked questions
How many construction companies are there in Kloten on CityHero?
CityHero currently lists 4 construction companies in Kloten, rated 4.6 out of 5 stars on average. Currently top-rated: Optimal Isolierungen GmbH.
What does a construction company in Kloten cost?
Costs depend heavily on the type of project, its scope and the materials chosen, so there are no flat rates. The most reliable approach is to use CityHero to request quotes from up to two firms in Kloten with one enquiry and compare them.
How do I find a reliable construction company in Kloten?
Look at customer reviews, concrete reference projects and a transparent quote. On CityHero you can compare 4 firms in Kloten by rating and request non-binding quotes to weigh price against service.