Plumber Salary in Colorado (2026)

The 2025 OBBBA No-Tax-on-Overtime federal deduction is the headline tax change for CO plumbers. For tax years 2025-2028, qualifying FLSA-required OT premium (the 'half' of time-and-a-half) is deductible above-the-line at the federal level — cap $12,500 single / $25,000 MFJ. Phaseout starts at $150K MAGI single / $300K MFJ at $100 per $1,000, fully phased out at $275K / $550K. Most CO journeyman plumbers fall under the phaseout threshold and capture the full deduction.

For a CO union journeyman at $55/hour running 50-hour weeks × 48 weeks, OT hours total ~480/year at $82.50/hour. The premium portion (the 'half' of time-and-a-half) is $13,200/year — over the $12,500 single cap. Most union journeymen at this scale qualify for the full cap. At the 22% federal bracket plus CO 4.40% flat, that's roughly $2,750 federal + $550 CO = $3,300/year combined savings through 2028. Across four OBBBA years, $13,200 of cumulative savings.

CO conforms to federal AGI for state tax — the OBBBA OT deduction flows through to CO state taxable income automatically. No separate CO add-back, no separate state-level cap to track. CO Department of Revenue Form 104 captures the federal adjustment cleanly.

The COMPS Order requires OT at 1.5× regular rate after 12 hours in a workday OR 40 hours/workweek, whichever produces more OT. Federal FLSA only triggers at the 40/week threshold. For CO plumbers running 12+ hour shifts on commercial GC jobsites — common during the spring-summer construction push — the daily-12 trigger adds 4-7% to gross comp versus a federal-only state.

CO Front Range construction cycle has been sustained since 2020 — Denver Convention Center expansion, Anschutz Medical Campus capital projects, Buckley Space Force Base expansion, Brighton / Aurora data center build (Microsoft, Meta, plus colocation), and Denver Water's lead-service-line replacement (~50K LSLs through 2034). Federal IIJA infrastructure funding plus DOE NREL / NIST / NCAR capital plus DOD facility upgrades drive sustained demand through 2030.

Union vs non-union: UA Plumbers + Pipefitters Local 3 Denver runs commercial scale ($55-78/hour journeyman plus benefits + pension). Non-union service plumbing is a meaningful segment — Roto-Rooter, Plumbline Services, Applewood Plumbing + Heating + Cooling, Brothers Plumbing pay commission structures rather than hourly union scale. Mountain town premium (Aspen, Vail, Telluride) pays 25-40% above Denver due to housing-shortage labor pressure. Per-diem stipends $150-300/day for out-of-area workers on mountain projects are common.

Denver Front Range plumbing economy is dominated by sustained commercial construction. Polestar Aurora, Denver Convention Center expansion, Empower Field at Mile High capital improvements, plus the Anschutz Medical Campus build (UCHealth, Children's Colorado, Veterans Affairs Medical Center) drive healthcare facility work. UA Local 3 Denver Pipefitters' apprenticeship produces ~80-100 journeymen/year — strong but not enough to keep up with demand. Service plumbing demand from rapid residential growth (~600K new CO residents 2020-2024) keeps the non-union segment hopping.

Federal facility work is the CO plumbing specialty that doesn't exist at this depth in most states. Anschutz Medical Campus (VA + UC Health + Children's CO), NREL Golden, NIST Boulder, NCAR Boulder, Buckley Space Force Base Aurora, plus the cleared-contractor tier (Lockheed Martin Space Littleton, Ball Aerospace Broomfield, Raytheon Aurora, Northrop Grumman Aurora) all maintain ongoing capital programs requiring cleared plumbers. TS/SCI clearance adds $15-30K premium plus job security through contracting cycles.

Mountain town plumbing is its own micro-economy. Aspen, Vail, Telluride, Crested Butte, Steamboat Springs, Breckenridge all pay 25-40% above Denver — driven by housing-cost-driven labor shortage and high-altitude technical complexity (boiler venting at 8,000+ feet, freeze protection, expansion tanks, snowmelt systems). Per-diem stipends $150-300/day for Denver-based plumbers commuting to mountain projects are standard. Snowmelt system specialty (glycol loops or electric mats for driveway / sidewalk heating) is a CO mountain niche worth $5-15K premium per high-end residential job.

CO winter is real but plumbers benefit. Front Range Jan-Feb high temps 30-45°F with regular blizzards — emergency frozen-pipe service drives off-season residential repair demand. Shoulder seasons (March-April, October-November) are when commercial construction peaks. Mountain towns reverse: peak demand is summer ski-resort buildout, with winter slowdown except emergency service.

CO plumber careers start with the UA Local 3 apprenticeship (5-year program, ~80-100 new apprentices/year) or non-union apprenticeship through CDLE-registered programs. Year 1 apprentice $42-50K base; pay rises 5-7% per year. Federal Pell Grant + UA Local 3 employer-paid tuition makes the apprenticeship genuinely cheaper than a 2-year community college degree. CO journeyman license requires 4 years apprenticeship + state exam through CDLE.

Years 5-10 (Journeyman): $85-135K total comp with overtime. UA Local 3 journeyman scale $55-78/hour + benefits + pension contribution. Non-union residential service typically commission-based at 8-12% of revenue. Specialty fork at year 7-8 — commercial / industrial / residential / federal facility. Federal-cleared work adds $15-30K via TS/SCI premium. Master plumber exam typically taken at year 6-8 via CDLE.

Years 10-15 (Master / Foreman / Senior Specialist): Master plumber + foreman comp $108-175K. Service manager / project manager comp $135-220K with bonus. Senior commercial pipefitter on industrial / federal work clearing $90-110/hour peak (with OT premium). Mountain-town premium adds 25-40% for those willing to commute or relocate. OBBBA OT deduction applies through 2028 — material savings at this tier.

Late career (15+): Most CO plumbers transition to owner-operator small shop (5-25 employees) by year 15-20. Combined S-corp distribution + owner-draw $145-385K typical. S-corp reasonable-salary plus passthrough distribution split saves $8-15K/year in SE tax. Section 199A QBI deduction applies (plumbing is non-SSTB) — 20% of qualifying business income deductible at federal level. Practice-sale exit to corporate consolidators or family transition typically $250K-$2M+ liquidity event.