Best General Contractors in Boulder, CO
24 companies listed · 23 in Boulder · 3 open weekends · 22 rated 4.5+
Data verified October 27, 2026
Roof Masters
Confluence Kitchen & Bath
Melton Design Build
Petra Custom Builders
Cottonwood Custom Builders
Listed for homeowners in and around Boulder, CO, these 24 companies take on multi-trade work, from a single addition to a whole-floor renovation. What each one says about licensing, hours and the work it takes on comes from its own website; ratings and quotes come from public reviews.

Area overview: Boulder, CO
Of the 24 companies we list here, 23 are in Boulder itself and 1 comes from Louisville (7 mi). The companies on this page are rated from 4.2 to 5.0 across 423 reviews; 2 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (81%) and responsiveness (77%). The topics that come up most in reviews of the companies on this page are "communication" and "price". 3 are open on Saturdays. 10 have a BBB rating of A or A+. Domain records put 20 websites of the companies on this page at ten or more years old; the oldest dates from 1997. 5 give free estimates and 2 are family- or locally-owned. We have a website on file for all 24 of the companies on this page; 21 publish a contact page; 17 list a public email and 2 take bookings online. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Why do some of these firms sit outside Boulder?
Only 23 of the 24 companies here are based in Boulder. The rest come from other towns within 10 mi. Crews travel to the work, so the office address matters less than whether they will send the same people every morning and what travel time does to the price.




