COMPANY RECORD · SEATTLE, WA
Comfort Systems USA Northwest — permit history in Seattle, WA
Comfort Systems USA Northwest appears on 189 Seattle permit records from 2018 through 2026, most often mechanical / hvac (77.2% of the record).
Permit categories
| Category | Permits | Share |
|---|---|---|
| Mechanical / HVAC | 146 | 77.2% |
| Electrical | 43 | 22.8% |
2 categories, as classified by the issuing authority. Small categories stay visible rather than being rounded away.
Activity by year
| Year | Permits issued |
|---|---|
| 2018 | 2 |
| 2019 | 45 |
| 2020 | 24 |
| 2021 | 17 |
| 2022 | 26 |
| 2023 | 15 |
| 2024 | 22 |
| 2025 | 25 |
| 2026 | 13 |
Busiest year on record: 2019, with 45 permits. One project can account for several filings, so read this as filing activity rather than workload.
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This page is a snapshot of Comfort Systems USA Northwest. The search behind it holds more than 400,977 Seattle permits naming a contractor, since 2015: 251,769 electrical permits, 143,940 mechanical (HVAC) permits, 5,268 fire protection permits.
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Where they worked
| Address in source | Most recent permit |
|---|---|
| 1800 YALE AVE | 2026-10-13 |
| 13273 AURORA AVE N | 2026-08-18 |
| 86 PIKE ST | 2026-08-11 |
| 311 OCCIDENTAL AVE S | 2026-05-20 |
| 423 2ND AVE S | 2026-04-03 |
| 1761 NW 57TH ST | 2026-03-13 |
| 2002 NW 56TH ST | 2026-03-13 |
| 5000 40th AVE NE | 2025-12-17 |
| 401 NE NORTHLAKE WAY | 2025-11-07 |
| 740 YESLER WAY | 2025-09-04 |
| 655 S EDMUNDS ST | 2025-08-21 |
| 2720 4TH AVE | 2025-08-19 |
| 1726 NW 57TH ST | 2025-08-05 |
| 1112 4TH AVE | 2025-07-30 |
102 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $0 to $13,000,000, median $13,101. Addresses appear as the authority published them. A permit is a filing at an address, not a completed job there.
Also named on permits at the same addresses
| Company | Shared addresses | Years |
|---|---|---|
| Titan Electric Inc | 25 | 2015–2026 |
| Adt LLC | 17 | 2015–2026 |
| Beach Electric LLC | 11 | 2019–2025 |
| Guardian Security Systems Inc | 10 | 2016–2026 |
| Smith Fire Systems | 10 | 2018–2026 |
| Performance Systems, Puget Sound | 10 | 2016–2026 |
| Ec Electric | 9 | 2015–2025 |
| Prime Electric | 8 | 2016–2025 |
Companies that also appear in Seattle permit records at addresses where Comfort Systems USA Northwest filed, in any year. Sharing an address is a documented co-appearance, not proof that they worked on the same project or with each other.
Permits on record
189 permits; open the 50 most recent
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| 7167193-BP | 2026-10-13 | Mechanical / HVAC | 1800 YALE AVE | Installing 1 expansion tank | $71,038 |
| 7167197-BP | 2026-10-13 | Mechanical / HVAC | 1800 YALE AVE | Installing 1 pressure vessel | $71,038 |
| 7167199-BP | 2026-10-13 | Mechanical / HVAC | 1800 YALE AVE | Installing 1 expansion tank | $71,038 |
| 7143972-ME | 2026-08-18 | Mechanical / HVAC | 13273 AURORA AVE N | Alterations to mechanical system on existing commercial building, per plans. | $22,000 |
| 7157525-RF | 2026-08-11 | Mechanical / HVAC | 86 PIKE ST | Installing refer piping to 2 condensers. | $38,275 |
| 7126755-ME | 2026-05-20 | Mechanical / HVAC | 311 OCCIDENTAL AVE S | installation of ERV system for the space for fresh air, per plans | $30,000 |
| 7139767-EL | 2026-04-23 | Electrical | 311 OCCIDENTAL AVE S | Installing 2 economizer motors | |
| 7136567-RF | 2026-04-03 | Mechanical / HVAC | 423 2ND AVE S | Installing refer piping to 1 compressor | $3,943 |
| 7133306-RF | 2026-03-13 | Mechanical / HVAC | 1761 NW 57TH ST | Installing refer piping to 6 compressors. | $39,819 |
| 7133300-RF | 2026-03-13 | Mechanical / HVAC | 2002 NW 56TH ST | Installing refer piping to 6 condensers. | $34,282 |
| 7132280-EL | 2026-03-06 | Electrical | 2002 NW 56TH ST | Installing 5 Garage controls and 9 thermostats | |
| 7132273-EL | 2026-03-06 | Electrical | 1761 NW 57TH ST | Installing 5 garage sensors and 12 thermostats | |
| 7124057-BP | 2026-01-12 | Mechanical / HVAC | 1800 YALE AVE | Replacement of low effeciency building cooling tower boiler to high efficienct boiler. Customer has already agreed to decarbonization plan for the building for the domestic water | $40,000 |
| 7100638-ME | 2025-12-17 | Mechanical / HVAC | 5000 40th AVE NE | A like-for-like mini split replacement for two units. | $20,000 |
| 7117203-BP | 2025-11-26 | Mechanical / HVAC | 1800 YALE AVE | Replacement of existing AO smith boiler with high efficiency Lochinvar. Future decarbonization plan required before final inspection. | $200,000 |
| 7115501-BP | 2025-11-07 | Mechanical / HVAC | 401 NE NORTHLAKE WAY | Installation of new boiler and expansion tank. Less than 20,000 square feet. Decarb Plan not required. | $50,000 |
| 7115503-BP | 2025-11-07 | Mechanical / HVAC | 401 NE NORTHLAKE WAY | Boiler and expansion tank replacement | $5,000 |
| 7104976-RF | 2025-09-04 | Mechanical / HVAC | 740 YESLER WAY | Installing refer piping to 3 units | $5,645 |
| 7104974-EL | 2025-09-04 | Electrical | 740 YESLER WAY | Installing 5 actuators, 1 room sensor and 3 thermostats | $2,200 |
| 7102789-EL | 2025-08-21 | Electrical | 655 S EDMUNDS ST | 4 RTU stats, 1 split system control, 1 DOAS controller and 2 CO,NO controls. | $18,858 |
| 7102802-RF | 2025-08-21 | Mechanical / HVAC | 655 S EDMUNDS ST | Installing refer piping to 1 compressor. mechanical permit 7076971-ME | $1,607 |
| 7102323-BP | 2025-08-19 | Mechanical / HVAC | 2720 4TH AVE | Replacing heat exchanger with new. | $25,890 |
| 7076971-ME | 2025-08-06 | Mechanical / HVAC | 655 S EDMUNDS ST | Installing (1) split system, fans, heat pumps, and (1) DOAS, per plans. refrigeration permit 7102802-RF | $200,000 |
| 7053698-ME | 2025-08-05 | Mechanical / HVAC | 1726 NW 57TH ST | Install new mechanical system for apartment building, per plans. | $7,218,228 |
| 7087801-ME | 2025-07-30 | Mechanical / HVAC | 1112 4TH AVE | Replacement of dryer venting system for existing dryers. New fan with VFD for the dryers, per plan. | $150,000 |
| 7053693-ME | 2025-07-28 | Mechanical / HVAC | 2002 NW 56TH ST | Mechanical Systems for new construction - per plans. | $773,075 |
| 7097605-BP | 2025-07-23 | Mechanical / HVAC | 4601 26TH AVE NE | Installing 1 storage Tank S/N # 25434142 | $11,881 |
| 7097607-BP | 2025-07-23 | Mechanical / HVAC | 4601 26TH AVE NE | Installing 1 Pressure Vessel S/N 25434141 | $11,881 |
| 7097621-BP | 2025-07-23 | Mechanical / HVAC | 4601 26TH AVE NE | Expansion Tank S/N 450826 | $881 |
| 7096297-RF | 2025-07-16 | Mechanical / HVAC | 310 FLORENTIA ST | Installing refer piping to 1 condenser. mechanical permit 7073048-ME | $1 |
| 7096233-EL | 2025-07-15 | Electrical | 310 FLORENTIA ST | Installing 8 thermostats and 7 CO/NO2 Sensors. | $8,467 |
| 7068711-ME | 2025-05-14 | Mechanical / HVAC | 740 YESLER WAY | Install (2) condensing units, (2) ducted fan coils, (2) ERVs, duct and GRDs - all work per plans. | $67,956 |
| 7050217-ME | 2025-03-26 | Mechanical / HVAC | 815 E EDGAR ST | Installing 2 VRF condensers, 10 ceiling cassettes, 1 ducted unit, 11 floor standing units, 1 wall mounted unit, 2 ERVs and GRDs, per plan. refrigeration permit 7064211-RF | $500,000 |
| 7077044-RF | 2025-03-25 | Mechanical / HVAC | 4601 26TH AVE NE | Installing refer piping to 3 compressors | $14,000 |
| 7077035-EL | 2025-03-24 | Electrical | 4601 26TH AVE NE | Installing 5 thermostats | $24,000 |
| 7073783-EL | 2025-03-05 | Electrical | 815 E EDGAR ST | Installing 3 thermostats and 2 ERV controllers | $5,300 |
| 7064211-RF | 2025-01-09 | Mechanical / HVAC | 815 E EDGAR ST | Installing refer piping to 2 compressors | $14,500 |
| 7064205-EL | 2025-01-09 | Electrical | 815 E EDGAR ST | Installing 7 thermostats | $3,500 |
| 7046895-ME | 2024-11-14 | Mechanical / HVAC | 1455 NW LEARY WAY | Replace existing Reznor Furnace with new Reznor furnace, same btu capacity, Like for Like, per plan. | $31,500 |
| 7055645-BP | 2024-11-13 | Mechanical / HVAC | 423 2ND AVE S | Installing 1 Storage Tank | $12,852 |
| 7055651-BP | 2024-11-13 | Mechanical / HVAC | 423 2ND AVE S | Installing 1 Storage Tank (ST-2) | $12,852 |
| 7055676-BP | 2024-11-13 | Mechanical / HVAC | 423 2ND AVE S | Installing 1 Buffer Tank (BT-CHW) | $2,861 |
| 7055677-BP | 2024-11-13 | Mechanical / HVAC | 423 2ND AVE S | Installing 1 Buffer Tank (BT-HHW) | $2,947 |
| 7055693-BP | 2024-11-13 | Mechanical / HVAC | 423 2ND AVE S | Installing 1 Expansion Tank (ET-2) | $1,846 |
| 7055697-BP | 2024-11-13 | Mechanical / HVAC | 423 2ND AVE S | Installing 1 Expansion Tank (ET-3) | $1,846 |
| 7055698-BP | 2024-11-13 | Mechanical / HVAC | 423 2ND AVE S | Installing 1 Expansion Tank (ET-4) | $1,846 |
| 7050680-FR | 2024-10-15 | Mechanical / HVAC | 3639 42ND AVE NE | Replace existing furnace with new, like for like replacement, same location. | $18,000 |
| 7030872-ME | 2024-06-25 | Mechanical / HVAC | 8635 FREMONT AVE N | Installing 1 bathroom fan. | $8,429 |
| 7015646-ME | 2024-05-28 | Mechanical / HVAC | 4610 VILLAGE CT NE | Replace existing 3 ton RTU with new 5 ton RTU, based on requirements needed for new Tenant in Retail space. per plans | $34,500 |
| 7008815-ME | 2024-05-20 | Mechanical / HVAC | 420 MELROSE AVE E | Replace existing Cooling Tower and Heat Exchanger per plans. | $164,000 |
Fields appear as the issuing authority published them, including spelling and blanks. Scope text is the applicant's description of intended work, not an inspection finding.
Source and limits
Public Seattle permit records through 2026, counted by distinct permit number. This is a historical filing record: it cannot show current backlog, pricing, crew availability, licensing or insurance, and a quiet period may only mean work was filed elsewhere. Confirm anything commercial with the company and with the issuing authority before acting. How we build these records, and what we withhold →
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