Koen ten Harmsen van der Beek 5,0 11 Apr 2026 Google

Koman Construction Company completed a complete renovation for us. We are very pleased with the final result and look back on a very pleasant collaboration.

Tom De Kruif 5,0 11 Apr 2026 Google

Finally, a contractor who responds to emails, calls, and keeps appointments! We've had quite a few builders visit our 1922 house, but none as responsive as Gert-Jan! Excellent work, great service (even in an emergency on a Sunday afternoon). Kitchen renovation, wall removal, plastering and painting, fixed stairs to the attic, attic floor reinforcement, and skylight installation. All within three weeks. Truly fantastic! We'll definitely be back for any future projects we'll undoubtedly have in our house. Mies and Tom.

Johan bruning 5,0 11 Apr 2026 Google

Rene and Gertjan, the bay window turned out beautifully. The collaboration and communication were excellent. I'm very pleased with the result. Thank you so much, Johan and Eline.

Leonie Breve 5,0 11 Apr 2026 Google

Super happy with our new front door and frame. Great communication and very satisfied with how everything went and the final result.