What handyman work requires a license in Boulder, Colorado?

Work that typically requires a license or a licensed trade professional includes: Electrical work (installing/altering wiring, circuits, panels, most fixture work) — requires Colorado electrical licensure and permits/inspection; Plumbing work beyond very minor maintenance (installing/altering supply/drain/vent piping, water heaters, gas piping) — requires Colorado plumbing licensure and permits/inspection; Mechanical/HVAC system installation or replacement (furnaces, boilers, AC) — typically requires mechanical permits and contractor registration locally; refrigerant handling requires EPA 608 certification; Structural alterations (moving/removing load-bearing walls, framing changes) — requires building permits and plans/engineering depending on scope; Roofing replacement, window replacement, or exterior alterations that trigger building permits and (in historic districts) landmark review; Any work requiring a permit where the jurisdiction requires a registered/licensed contractor to pull it (common in cities including Boulder). Always verify with your local licensing authority.

What Can a Handyman Do Without a License in Boulder, Colorado?

Q: What can a handyman do without a license in Boulder, Colorado?

Common examples include: Painting (interior/exterior) that does not involve regulated lead abatement; follow EPA RRP rules for pre-1978 homes when applicable; Minor drywall patching and texture repair; Basic carpentry: trim/baseboards, door hardware, cabinet hardware, shelving (non-structural); Tile repair or replacement in non-structural applications (subject to waterproofing/building code requirements); Caulking/grouting, minor rot repair that is not structural framing; Replacing faucets or toilets ONLY if allowed by local rules and without altering plumbing systems (note: many plumbing tasks still require a licensed plumber and permits in Colorado jurisdictions—verify before offering).

By Ray Duke, Founder of Bulletproof Handyman · Last reviewed February 2026

Colorado does not have a single statewide “general contractor license” for handymen; contractor licensing is primarily handled by local jurisdictions (city/county building departments). In Boulder, you typically need to (1) hold the appropriate City of Boulder contractor registration/classification to pull permits, and (2) obtain a City of Boulder business license/tax registration if operating in the city. Even when general contracting isn’t state-licensed, electrical and plumbing work are state-licensed trades in Colorado and cannot be done legally without the proper state credential and permits.

✅ What You Can Do Without a License

Painting (interior/exterior) that does not involve regulated lead abatement; follow EPA RRP rules for pre-1978 homes when applicable
Minor drywall patching and texture repair
Basic carpentry: trim/baseboards, door hardware, cabinet hardware, shelving (non-structural)
Tile repair or replacement in non-structural applications (subject to waterproofing/building code requirements)
Caulking/grouting, minor rot repair that is not structural framing
Replacing faucets or toilets ONLY if allowed by local rules and without altering plumbing systems (note: many plumbing tasks still require a licensed plumber and permits in Colorado jurisdictions—verify before offering)
Replacing light fixtures/switches ONLY if permitted by local rules and performed by a properly licensed electrician (as a handyman you generally should not offer this unless you hold the electrical license)
Gutter cleaning, minor exterior maintenance, and non-structural repairs (subject to safety and HOA rules)

Common Jobs Handymen Take in Boulder

Based on the CO threshold, handymen in Boulder commonly take on:

Painting (interior/exterior) that does not involve regulated lead abatement; follow EPA RRP rules for pre-1978 homes when applicable
Minor drywall patching and texture repair
Basic carpentry: trim/baseboards, door hardware, cabinet hardware, shelving (non-structural)
Tile repair or replacement in non-structural applications (subject to waterproofing/building code requirements)
Caulking/grouting, minor rot repair that is not structural framing
Replacing light fixtures/switches ONLY if permitted by local rules and performed by a properly licensed electrician (as a handyman you generally should not offer this unless you hold the electrical license)
Gutter cleaning, minor exterior maintenance, and non-structural repairs (subject to safety and HOA rules)

⚠️ What Requires a License

Electrical work (installing/altering wiring, circuits, panels, most fixture work) — requires Colorado electrical licensure and permits/inspection
Plumbing work beyond very minor maintenance (installing/altering supply/drain/vent piping, water heaters, gas piping) — requires Colorado plumbing licensure and permits/inspection
Mechanical/HVAC system installation or replacement (furnaces, boilers, AC) — typically requires mechanical permits and contractor registration locally; refrigerant handling requires EPA 608 certification
Structural alterations (moving/removing load-bearing walls, framing changes) — requires building permits and plans/engineering depending on scope
Roofing replacement, window replacement, or exterior alterations that trigger building permits and (in historic districts) landmark review
Any work requiring a permit where the jurisdiction requires a registered/licensed contractor to pull it (common in cities including Boulder)

Business License — Boulder

Required. City of Boulder Business License / Tax Registration (and contractor registration for permitting)

Setting Up Your Business in CO

To get paid professionally and protect yourself, register your business. LLC filing fee in CO: $50 (one-time). You'll also need a free EIN from the IRS and a business checking account.

Your Next Steps to Operating Legally in Boulder

Step 1: Register your business entity (LLC recommended) with the Colorado Secretary of State ($50 filing; periodic report typically $10/year).
Step 2: Register for City of Boulder business licensing/tax accounts as required for your activity (sales/use tax, employer accounts) and confirm whether you need a separate contractor registration to pull permits.
Step 3: Get general liability insurance and keep certificates ready for contractor registration and client requests.
Step 4: If you plan to do any electrical or plumbing work, pursue the proper Colorado DORA trade license (or subcontract those trades) and confirm Boulder permit requirements before bidding.

Licensing rules and fees change over time, so this information may be out of date. Verify all requirements with your local licensing authority before making business decisions.