Seattle, WA contractors by trade
Seattle rankings are backed by the city's electrical and trade building records, so the contractors shown here are firms that have actually done this kind of work in Seattle. Those feeds cover electrical, mechanical, HVAC, fire-sprinkler, and sign work, which is where Seattle names the contractor on the job.
Backed by Seattle city building records. Verified against the L&I snapshot dated 2026-08-16.
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Most active by trade in Seattle
Leader of each Seattle ranking, by job-relevant city building records. Counts are city-scoped, not statewide.
- Electricians14,529 jobs
Adt LLC
- HVAC contractors5,527 jobs
Ballard Natural Gas Srvc Inc
- Fire-protection contractors139 jobs
Reliance Fire Protection Inc
- Sign contractors1,123 jobs
National Sign Corp
- Both HVAC and electrical2,298 jobs
Go Green Heating AC & Elec LLC
- Both electrical and plumbing7,921 jobs
As You Wish Electric
- ElectriciansElectrical work, panel upgrades, and EV chargers94 job-backed firms →
- HVAC contractorsAir conditioning, heating, and mechanical systems15 job-backed firms →
- PaintersInterior and exterior painting144 licensed firms →
- CarpentersFraming, trim, and finish carpentry51 licensed firms →
- Tile contractorsTile, stone, and coping20 licensed firms →
- Fire-protection contractorsFire sprinklers and fire alarms26 job-backed firms →
- Flooring contractorsCarpet, hardwood, and other flooring47 licensed firms →
- Sign contractorsSigns, awnings, and canopies38 job-backed firms →
- Both HVAC and electricalHeating, cooling, and electrical work under one firm2 job-backed firms →
- Both electrical and plumbingElectrical and plumbing work under one firm4 job-backed firms →
Seattle's city building records do not separately label pool contractors, solar contractors, remodeling contractors, fencing contractors, plumbing contractors, masonry contractors, landscaping contractors, roofing contractors, concrete contractors, drywall contractors, stucco contractors, window and door contractors, excavation contractors, insulation contractors, contractors that do both HVAC and plumbing, contractors that do HVAC, electrical, and plumbing together, contractors that do both solar and electrical, so we cannot rank those trades on local job history here. Statewide license search still covers them.
Trades across Washington
Each trade also has a statewide hub that lists every covered city with job-backed firms.