General Contracting contractors in
Denver, Colorado.
A public directory of general contracting contractor businesses serving greater Denver. Market data, licensing requirements, and cost benchmarks — updated continuously from public sources.
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Licensing Requirements
Licensing Requirements
Colorado requires General Contractors to hold a state license through the Department of Regulatory Agencies (DORA), Division of Professions and Occupations. License types: (1) Unrestricted GC license - no job limit; (2) Restricted GC license - jobs under $500,000 (adjusted annually). Exam: Passes NASCLA-administered Colorado General Contractor exam covering business law, construction codes, and safety. Must document 4 years field experience (2 years if bachelor's in construction). Renewal: Every 2 years; 24 hours continuing education required per renewal cycle. Local Denver licensing adds additional City/County registration ($300-500 annually) with separate business tax clearance.
Permit Requirements
Denver Building Department requires permits for: structural work, electrical, plumbing, HVAC, roofing over 25% of surface, room additions, deck/patio (footings below frost line 42 inches in Denver). Permit costs: 1-2% of project value, $100 minimum. Pre-approval drawings required for anything over $25,000. Zoning compliance review (setbacks, lot coverage) mandatory. Plan review takes 5-10 business days; expedited available at 25% premium.
Inspection Schedule
Initial framing inspection (before insulation), electrical rough-in inspection, plumbing rough-in inspection, final inspection post-completion. HVAC and roofing also inspected. Typical schedule: one inspection per phase over 4-12 week project. Denver Building Department averages 2-3 day turnaround for scheduling inspections during normal season; can extend to 5-7 days in summer peak.
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Local market snapshot
Source: DoorBase, aggregated public ZIP-level data. Updated 7/17/2026.
How to Get Licensed
Step 1: Document Work Experience
Compile 4 years of verifiable general contracting field experience (or 2 years if you hold a bachelor's degree in construction). Get letters from previous employers or project owners confirming your role and dates. DORA will verify these directly. This is the biggest hurdle—documentation must be specific (project names, dates, your exact duties). Allow 2-4 weeks to gather everything. If experience gaps exist, you won't move forward until they're resolved.
Step 2: Complete DORA Application
File the Colorado Division of Professions and Occupations General Contractor License Application (Form GC-1). Include: work history, references, application fee ($250-400), and a copy of your high school diploma or equivalent. Application processing takes 3-5 weeks. DORA will contact your references. Submit everything online through the DORA licensing portal or by mail to: Division of Professions and Occupations, 1560 Broadway Suite 1350, Denver, CO 80202.
Step 3: Pass NASCLA General Contractor Exam
After DORA approves your application, you'll receive exam authorization. Schedule your NASCLA exam through the National Association of State Contractors Licensing Agencies testing center. The exam covers Colorado construction law, codes (based on current adopted International Building Code), business practices, contracts, and safety. 100 multiple-choice questions; 2.5 hours; 70% pass score required. Exam fee: $200-250. Exam scheduling typically takes 1-2 weeks. Many candidates spend 4-6 weeks studying; use DORA's published exam blueprint and take practice exams.
Step 4: Receive State License and Register with Denver
Once you pass the NASCLA exam, DORA issues your Colorado General Contractor License (typically 7-10 days post-exam). Your license number becomes active immediately. Next: register your business with Denver/County Assessor for local licensing ($300-500 annually) and obtain a Business Tax Clearance Certificate from Denver Finance Department. Without local registration, you cannot legally work within Denver city limits. Allow 2-3 weeks for local registration processing.
Step 5: Obtain Insurance and Complete Initial Setup
Before your first project, secure General Liability insurance ($1-2M minimum), Workers' Compensation (mandatory if you have employees), and file proof with your local jurisdiction. Get your OSHA 30-Hour card (recommended, not legally required but clients expect it). Set up a separate business bank account and payroll system. Enroll in Colorado Department of Labor and Employment for payroll reporting. Your license is now active and you're legal to bid and contract.
Step 6: Maintain License with Continuing Education and Renewals
Colorado GC licenses renew every 2 years. Before expiration, complete 24 hours of continuing education (specific courses approved by DORA covering law updates, safety, codes). Renewal fee: $200-300. Submit renewal application 60-90 days before expiration. Keep proof of CE completion for 4 years in case of audit. Set a calendar reminder 6 months before expiration. Non-renewal results in license lapse; you cannot legally contract again until reinstated (which takes 4-6 weeks and higher fees).
About This Market
Denver's general contracting market is locked in high-demand territory. You've got 1,403 licensed GC establishments across Colorado, but Denver metro concentrates the money—strong economy, tech sector growth, and older housing stock needing updates. Residential remodels dominate (kitchens, baths, additions), but commercial ground-up construction and tenant improvements are steady. Costs run 15-20% above national average due to labor scarcity, material delivery to high elevation, and tight labor market pushing wages to $61.75/hr median. Competition is real but selective—projects over $100k filter out the small shops fast. Lot of work out there. You compete on schedule reliability and quality, not price alone.
To work this market, lock down your DORA General Contractor license first—the 4-year experience requirement and NASCLA exam aren't jokes. Budget 6-8 weeks for license processing after exam pass. Local Denver registration and business tax clearance add another 2-3 weeks. Know the Denver Building Code adoption timeline—they update every 3 years, and frost-line depth at 42 inches matters for every footing. Carry $2M general liability minimum and $1M property damage; most commercial clients demand $5M umbrella. Peak season (May-September) means you need your crew locked down by March or you're walking away from jobs. Winter is your maintenance and bid-prep window. Inspect the frost line, respect the weather windows, and don't underestimate permitting timelines—5-10 days for plan review becomes your baseline planning assumption.
- Median hourly wageU.S. Bureau of Labor Statistics (BLS) - May 2023 Occupational Employment and Wage Statistics (OEWS), General Contractors
- Number of licensed GC establishments in ColoradoU.S. Census Bureau - County Business Patterns (CBP) - General Contractors (NAICS 236200)
- Colorado licensing requirements and exam standardsColorado Department of Regulatory Agencies (DORA), Division of Professions and Occupations - General Contractor License Rules (12.25.1)
- Denver Building Code adoption and permit requirementsDenver Building Department - 2021 Denver Building Code (adopted from International Building Code 2021) and Permit Fee Schedule
- Frost line depth for Denver metro areaDenver Building Department and U.S. Department of Agriculture - USDA Hardiness Zone maps; Local frost line engineering data
- Peak season demand patterns for constructionU.S. Bureau of Labor Statistics - Construction Employment Seasonality Data and Census Bureau Economic Indicators
- Insurance minimums and workers' compensation requirementsColorado Division of Workers' Compensation and Denver Building Department permit requirement documentation
- Regional cost data and project pricingRSMeans Construction Cost Database, local Denver contractor surveys, and Building Trades Exchange market reports
Frequently Asked Questions
What's the difference between a Colorado Unrestricted and Restricted General Contractor license?
An Unrestricted GC license has no project value cap—you can bid any size job. A Restricted license limits you to projects under $500,000 (amount adjusted annually by DORA). Both require the same exam and 4-year experience requirement, but Restricted is issued faster (2-3 weeks vs. 4-6 weeks) if you're just starting. Most Denver residential contractors start Restricted and upgrade after a few years. Check DORA's current annual threshold adjustment before applying.
How long does it actually take to get licensed as a GC in Colorado?
Timeline: (1) Experience documentation and application prep—2-4 weeks; (2) DORA application processing—3-5 weeks; (3) NASCLA exam scheduling (takes 1-2 weeks to schedule after approval); (4) exam pass and license issuance—7-10 days. Total: 8-12 weeks start to finish if you're organized. Exam scheduling delays during peak contractor licensing season (spring) can add another 2-3 weeks. Have your work history documents ready before you apply. Source: Colorado DORA Division of Professions and Occupations.
What permits does Denver require for a typical kitchen remodel?
Denver requires permits for electrical work (new circuits, panel upgrades), plumbing (fixture relocation, rough-in), and HVAC modifications. If you're moving load-bearing walls, structural drawings and inspection required. Permit costs run 1-2% of project value, minimum $100. Plan review by Denver Building Department takes 5-10 business days. No permit = stop work order and fines up to $500/day. Always pull permits—it's non-negotiable for insurance and resale. Source: Denver Building Department permit portal and fee schedule.
What's the minimum insurance required to work as a GC in Denver?
Colorado law doesn't set a specific minimum, but Denver Building Department and most commercial clients require: General Liability minimum $1M per occurrence, $2M aggregate. Property damage included. Workers' Comp is mandatory if you have employees (even 1 part-timer). Many commercial projects demand $5M umbrella and proof of subcontractor insurance. Residential clients increasingly ask for $2M minimum. Cost: roughly $1,500-3,000/year for a small residential shop. Get your insurance before you apply for licensing—DORA sometimes asks for proof. Source: Denver Building Department permit requirements and state workers' comp board.
When is the busiest season for GC work in Denver, and what should I plan for?
May through September is peak season—70% of annual residential work hits during this window. Freeze on hiring and crew scheduling by early April or you'll be turning away jobs. Winter (November-March) sees 30-40% volume drop due to weather and homeowner spending pullback, but it's your maintenance, estimation, and crew training window. Frost line in Denver hits 42 inches, so any footing work or deck construction needs to account for that depth. Permitting delays can add 2-3 weeks to project startup in peak season. Plan your labor and material ordering accordingly. Source: Census data on construction employment seasonality and Denver Building Department permit issuance records.
General Contracting contractors in Denver
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