Best General Contractors in Boulder, CO (2026)
Choosing the right general contractor in Boulder, CO can be overwhelming. Our directory contains 81 active general contractors records for the Boulder area. Use the available information to build a shortlist and verify fit directly. At Top General Contractors, we analyze publicly available data to order the listed profiles using the stated comparison method -- no paid placements, no sponsored rankings.
This 2026 ranking evaluates general contractors in Boulder, Colorado using our Directory information score, which adds fixed points for captured public reviews, listed credentials, press mentions, web presence, reported experience, and profile completeness. The directory contains 81 active business records in this market; 15 appear in this list.
By the numbers: Directory information scores on this list range from 20/100 to 65/100, the average recorded public rating among 2 rated profiles is 5.0 stars, these businesses have accumulated 51 total reviews, the average age based on recorded founding years is 26 years. Source coverage varies between profiles.
Each entry below includes the business's Directory information score, star rating, review count, and an explanation of the recorded information used in the comparison. Click through to any profile for the full breakdown including contact information, specialties, credentials, and related businesses in Boulder.
The Top 15 General Contractors in Boulder, CO
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#1 Green Mountain Boys Garden and Landscape 65/100
Selected for 5.0-star rating across 35 reviews.
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#2 Penguin Home Services 61/100
Selected for 5.0-star rating across 16 reviews.
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#3 Skycastle Construction 29/100
Selected for 25 years of experience (est. 2001).
Skycastle Construction brings reliable contracting services to Boulder and nearby communities in CO. Reach out at +17204078010 or visit them online.
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#4 Bath Tune-Up Boulder and Longmont 27/100
Selected for 12 years of experience (est. 2014); specializes in bathtub, full bathroom renovation, conversions.
Bath Tune-Up Boulder and Longmont brings professional contracting expertise to the Boulder, CO community. Their services include bathtub, full bathroom renovation, conversions, shower, find endless b…
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#5 SoBo Homes, Inc. 26/100
Selected for 23 years of experience (est. 2003); team of 8 professionals; specializes in general contracting.
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#6 Ameritech Windows 25/100
Selected for 32 years of experience (est. 1994); team of 8 professionals.
Ameritech Windows brings professional contracting expertise to the Boulder, CO community. They serve clients in the economy market segment. Reach them at +13034441998 or email brianbrill@ameritechwin…
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#7 Habitat for Humanity 24/100
Selected for 38 years of experience (est. 1988); team of 9 professionals.
Based in Boulder, Habitat for Humanity provides quality contracting services to the greater CO area. They serve clients in the luxury market segment. Reach them at +13034424285. Visit their website t…
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#8 Elton R Construction 24/100
Selected for specializes in general contracting.
Elton R Construction provides contracting services throughout Boulder, CO and surrounding communities, specializing in general contracting.
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#9 Eco Handyman 23/100
Ranked 9th among general contractors in this market based on overall Directory information score.
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#10 David Ellis 23/100
Selected for specializes in general contracting.
David Ellis is a contractor serving the Boulder, CO community. Their services include general contracting. Reach them at (303) 666-6939. Visit their website to learn more about their work. Located at…
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#11 Blue Stone Woodworks 23/100
Selected for specializes in general contracting.
Based in Boulder, Blue Stone Woodworks brings professional contracting services to the CO area, with expertise in general contracting.
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#12 Sacred Spaces Design Build 21/100
Selected for specializes in general contracting.
From their base in Boulder, Sacred Spaces Design Build serves contracting clients across CO. Their services include general contracting. Reach them at +13034945560 or email sacredspacesboulder@gmail.…
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#13 Buildwell 21/100
Selected for specializes in general contracting.
Buildwell focuses on general contracting and serves clients throughout the Boulder, CO area. Their services include general contracting. Reach them at (720) 838-6609. Visit their website to learn mor…
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#14 Flatiron Custom Designs LLC 20/100
Ranked 14th among general contractors in this market based on overall Directory information score.
Flatiron Custom Designs LLC is an established contractor based in Boulder, CO. Reach them at +15082218587 or email info@flatironcustomdesigns.com. Visit their website to learn more about their work.…
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#15 Classic Work Construction, LLC 20/100
Selected for specializes in general contracting.
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How We Ranked These General Contractors
The Directory information score adds fixed points for captured public ratings, review volume, web presence, profile completeness, listed credentials, press mentions, and reported experience, up to 100 points. Missing data contributes no points; a low score may mean missing information. It does not measure service quality. No business can pay for a higher score.
Profile coverage and sources vary. Follow the source attribution and business links on each profile, verify credentials with the issuing organization, and confirm current availability and terms directly.
Frequently Asked Questions
How did we rank the best general contractors in Boulder?
Top General Contractors orders profiles using the Directory information score, a 0–100 summary of captured profile and public review information. Fixed point limits apply to ratings, review volume, web presence, profile completeness, listed credentials, press mentions, and reported experience. Missing information contributes no points. A low score may mean missing data; the score is not a measure of service quality or a recommendation. There is no paid placement.
Who is the #1 general contractor in Boulder, CO?
Green Mountain Boys Garden and Landscape appears first in this Directory information score comparison for Boulder, with a Directory information score of 65/100. This reflects recorded information and the selected sort order, not an independent assessment of service quality.
How often is this list updated?
Lists are generated from the records currently held in the directory. Imports and corrections may change their order. Update timing varies by source; this page does not claim a monthly audit or independent verification of every fact.
How many general contractors are there in Boulder?
Our database currently tracks 81 active general contractors in the Boulder, CO metro area. This list highlights the top 15 based on Directory information score. Browse our full Boulder directory to see every listed business.
Can a general contractor pay to be ranked higher?
No. Top General Contractors does not accept payment for rankings. Directory information scores are computed algorithmically from recorded profile information. Businesses can claim and update their profile with accurate information, but the ranking algorithm treats all profiles equally. Our editorial independence is core to our methodology.
What should I look for when hiring a general contractor in Boulder?
We recommend evaluating: (1) professional certifications and credentials, (2) verified customer reviews and ratings, (3) years of experience in the Boulder market, (4) portfolio quality and range of work, (5) budget alignment with your project scope, and (6) responsiveness and communication style. The Directory information score cannot assess project fit, responsiveness, workmanship, or outcomes; use it alongside these checks.