COMPANY RECORD · SEATTLE, WA
Legacy One Heating — permit history in Seattle, WA
Legacy One Heating appears on 510 Seattle permit records from 2018 through 2026, most often mechanical / hvac (99.4% of the record).
Business record held by the regulator
| Name as registered | LEGACY ONE HEATING LLC |
|---|---|
| Entity type | Limited Liability Company |
| State registration (UBI) | 604006069 |
| Business address on file | 4403 RUSSELL ROAD MUKILTEO WA 98275 |
| Business phone on file | (206) 693-1957 |
| Licence number | LEGACOH845L3 |
| Licence type | CONSTRUCTION CONTRACTOR |
| Specialty | GENERAL |
| Status in the register | ACTIVE |
| Expires | 2028-06-23 |
Read from L&I Contractor License Data - General, published by the Washington State Department of Labor & Industries; our copy is from 2026-10-31. The name, address and phone are those the company filed with the regulator, reproduced as published. A permit shows the licence was on file the day it was filed. These rows show what the regulator holds now. The record is matched to Legacy One Heating by company name, and only where that name resolves to exactly one licence in the register — a rule measured at 99.4% correct against permits whose licence number we already know. Verify with the authority before acting on it.
Permit categories
| Category | Permits | Share |
|---|---|---|
| Mechanical / HVAC | 507 | 99.4% |
| Electrical | 3 | 0.59% |
2 categories, as classified by the issuing authority. Small categories stay visible rather than being rounded away.
Activity by year
| Year | Permits issued |
|---|---|
| 2018 | 6 |
| 2019 | 13 |
| 2020 | 40 |
| 2021 | 93 |
| 2022 | 159 |
| 2023 | 52 |
| 2024 | 48 |
| 2025 | 48 |
| 2026 | 51 |
Busiest year on record: 2022, with 159 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 Legacy One Heating. 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 |
|---|---|
| 10001 49TH AVE NE | 2026-10-21 |
| 7310 23RD AVE NW | 2026-10-19 |
| 920 C NW 54TH ST | 2026-10-16 |
| 920 D NW 54TH ST | 2026-10-16 |
| 7263 28TH AVE NE | 2026-10-14 |
| 9614 15TH AVE NE | 2026-10-02 |
| 920 B NW 54TH ST | 2026-09-18 |
| 920 A NW 54TH ST | 2026-09-18 |
| 4307 NE 55TH ST | 2026-09-16 |
| 3008 NW 57TH ST | 2026-09-15 |
| 4204 S GRAHAM ST | 2026-09-10 |
| 1802 28TH AVE W | 2026-09-01 |
| 6302 MERIDIAN AVE N | 2026-08-19 |
| 8517 B STONE AVE N | 2026-08-17 |
318 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $1,000 to $96,905, median $16,000. 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 |
|---|---|---|
| Dvac Heating&Air | 79 | 2019–2026 |
| Dickson Electric LLC | 46 | 2019–2024 |
| Mauro Electric Inc | 35 | 2017–2025 |
| Agc Electric, Inc. | 15 | 2021–2023 |
| Madrona Electric LLC | 13 | 2022–2026 |
| Kemly Electric, Inc. | 13 | 2016–2026 |
| Adt LLC | 13 | 2015–2026 |
| Seatown Electric, Plumbing, Heating & Air DBA Seatown Services | 12 | 2019–2026 |
Companies that also appear in Seattle permit records at addresses where Legacy One Heating 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
510 permits; open the 50 most recent
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| 7168249-RF | 2026-10-21 | Mechanical / HVAC | 10001 49TH AVE NE | Installing CIRCULATOR PUMP, Dryer venting and HISENSE A2L: 36K / 3-cassette | $25,000 |
| 7168245-FR | 2026-10-21 | Mechanical / HVAC | 10001 49TH AVE NE | Installing HISENSE A2L: 36K / 3-cassette, dryer venting, boiler exhaust ventilation and CIRCULATOR PUMP. | $25,000 |
| 7168141-FR | 2026-10-19 | Mechanical / HVAC | 7310 23RD AVE NW | Installing MITSUBISHI A2L: 18K / single ceiling cassette & Exhaust Fan Ventilation | $14,000 |
| 7168137-RF | 2026-10-19 | Mechanical / HVAC | 7310 23RD AVE NW | Installing MITSUBISHI A2L: 18K / single ceiling cassette & Exhaust Fan Ventilation | $14,000 |
| 7167113-ME | 2026-10-16 | Mechanical / HVAC | 920 C NW 54TH ST | Installing DAIKIN: 2-wall cassette system, Bath fan venting, Kitchen range venting, Dryer vent with pan and heat pump with water heater venting - Subject to Field Inspection (STFI) | $11,530 |
| 7167137-ME | 2026-10-16 | Mechanical / HVAC | 920 D NW 54TH ST | Installing DAIKIN: 2-wall cassette system, Dryer vent with pan, Kitchen range venting, Bath fan venting and Heat pump water heater venting - Subject to Field Inspection (STFI) | $11,530 |
| 7167140-FR | 2026-10-14 | Mechanical / HVAC | 7263 28TH AVE NE | Installing Kitchen range venting and Barometric by-pass make up air | $2,000 |
| 7165227-RF | 2026-10-02 | Mechanical / HVAC | 9614 15TH AVE NE | Installing Bosch: two heat pumps, Ductwork: 2-floors, PANASONIC: Bath fan with venting, PANASONIC: Utility room fan, dryer venting, kitchen range venting and gas piping:4-outlets. | $30,000 |
| 7165226-FR | 2026-10-02 | Mechanical / HVAC | 9614 15TH AVE NE | Installing Bosch: two heat pumps, Ductwork: 2-floors, PANASONIC: Bath fan with venting, PANASONIC: Utility room fan, dryer venting, kitchen range venting and gas piping:4-outlets. | $30,000 |
| 7163250-RF | 2026-09-18 | Mechanical / HVAC | 920 D NW 54TH ST | Installing DAIKIN: 2-wall cassette system. bath fan with venting, kitchen range with venting and dryer vent with pan. | $11,000 |
| 7163249-RF | 2026-09-18 | Mechanical / HVAC | 920 C NW 54TH ST | Installing DAIKIN: 2-wall cassette system, bath fan with venting, kitchen range with venting and dryer vent with pan. | $11,000 |
| 7163248-RF | 2026-09-18 | Mechanical / HVAC | 920 B NW 54TH ST | Installing DAIKIN: 2-wall cassette system, bath fan with venting, kitchen range with venting and dry vent with pan. | $11,000 |
| 7163247-RF | 2026-09-18 | Mechanical / HVAC | 920 A NW 54TH ST | Installing DIAKIN: 2-wall cassette system, bath fan with venting, dryer vent with pan and kitchen range venting. | $11,000 |
| 7162275-ME | 2026-09-17 | Mechanical / HVAC | 920 B NW 54TH ST | Installing DIAKIN: 3-wall cassette system, Bath fan venting, kitchen range venting, dryer vent with pan. Subject to Field Inspection - STFI | $11,000 |
| 7162063-ME | 2026-09-17 | Mechanical / HVAC | 920 A NW 54TH ST | Installing DIAKIN: 3-wall cassette system, bath fan venting, kitchen range venting, dryer vent with pan. Subject to Field Inspection- STFI | $11,000 |
| 7162927-RF | 2026-09-16 | Mechanical / HVAC | 4307 NE 55TH ST | Install MIDEA: 2-ton EVOX G2 heat pump / pump / dual fuel | $20,000 |
| 7162928-FR | 2026-09-16 | Mechanical / HVAC | 4307 NE 55TH ST | Install MIDEA: 2-ton EVOX G2 heat pump / pump / dual fuel | $20,000 |
| 7162684-RF | 2026-09-15 | Mechanical / HVAC | 3008 NW 57TH ST | Installing BOSCH A2L: 48K /5- Wall / Ceiling cassettes, PANASONIC: Bath fan with venting, Kitchen range venting, Barometric by-pass make up air. | $20,000 |
| 7162681-FR | 2026-09-15 | Mechanical / HVAC | 3008 NW 57TH ST | Installing BOSCH A2L: 48K /5- Wall / Ceiling cassettes, PANASONIC: Bath fan with venting, Kitchen range venting, Barometric by-pass make up air. | $20,000 |
| 7161798-FR | 2026-09-10 | Mechanical / HVAC | 4204 S GRAHAM ST | Installing BOSCH A2L: 36K / Multi Wall cassette and ducted & BOSCH A2L: 12K single cassette | $20,000 |
| 7161802-RF | 2026-09-10 | Mechanical / HVAC | 4204 S GRAHAM ST | Install BOSCH A2L: 36K / Multi Wall cassette and ducted & BOSCH A2L: 12K single cassette | $20,000 |
| 7160869-RF | 2026-09-01 | Mechanical / HVAC | 1802 28TH AVE W | Installing MIDEA: 5-ton EVOX G2 heat pump install, Ductwork: 3-floors, Zone system: 2-zones and Kitchen range venting. | $43,000 |
| 7160873-FR | 2026-09-01 | Mechanical / HVAC | 1802 28TH AVE W | Installing MIDEA: 5-ton EVOX G2 heat pump install, Ductwork: 3-floors, Zone system: 2-zones and Kitchen range venting . | $43,000 |
| 7158790-FR | 2026-08-19 | Mechanical / HVAC | 6302 MERIDIAN AVE N | Installing Ductwork | $1,000 |
| 7158395-RF | 2026-08-17 | Mechanical / HVAC | 8517 B STONE AVE N | Installing MIDEA A2L: 3-ton / 15-SEER air conditioner | $15,000 |
| 7154803-RF | 2026-07-24 | Mechanical / HVAC | 6517 37TH AVE SW | Installing MITSUBISHI A2L: 18K /single wall cassette install and PANASONIC: Bath fan with venting | $8,000 |
| 7154838-FR | 2026-07-24 | Mechanical / HVAC | 6517 37TH AVE SW | Installing MITSUBISHI A2L: 18K /single wall cassette and PANASONIC: Bath fan with venting | $8,000 |
| 7151886-ME | 2026-07-21 | Mechanical / HVAC | 920 E NW 54TH ST | Installing DAIKIN: 2-wall cassette system and various venting STFI (Subject to Field Inspection) | $14,000 |
| 7151871-ME | 2026-07-21 | Mechanical / HVAC | 920 G NW 54TH ST | Installing DIAKIN: 2-wall cassette system, and various venting STFI (Subject to Field Inspection) | $14,000 |
| 7151882-ME | 2026-07-21 | Mechanical / HVAC | 920 F NW 54TH ST | Installing DIAKIN: 2-wall cassette system and various venting STFI (Subject to Field Inspection) | $14,000 |
| 7150698-FR | 2026-06-30 | Mechanical / HVAC | 7315 46TH AVE NE | Installing PANASONIC: Bath fan with venting, Gas Dryer Venting, Second Floor Primary Bath Fan, PANASONIC: Utility room / 190CFM fan install range venting and make-up air system. | $1,000 |
| 7145389-RF | 2026-05-29 | Mechanical / HVAC | 1605 5TH AVE N | Installing MITSUBISHI: A2L 15K single wall cassette system installation | $14,000 |
| 7086893-ME | 2026-05-28 | Mechanical / HVAC | 1605 5TH AVE N | Install MITSUBISHI: 24K btu / 2-cassette heat pump system, per plan. | $15,990 |
| 7142655-FR | 2026-05-14 | Mechanical / HVAC | 4211 27TH AVE W | Installing DUCT MODIFICATIONS & HISENSE A2L: Hi-Pro 3-ton heat pump system | $23,000 |
| 7142652-RF | 2026-05-14 | Mechanical / HVAC | 4211 27TH AVE W | Installing DUCT MODIFICATIONS & HISENSE A2L: Hi-Pro 3-ton heat pump system | $23,000 |
| 7141802-FR | 2026-05-07 | Mechanical / HVAC | 3418 E DENNY WAY | Installing Mitsubishi 12k Wall Mounted System & PANASONIC: Bath fan with venting & Dryer venting | $12,000 |
| 7141809-RF | 2026-05-07 | Mechanical / HVAC | 3418 E DENNY WAY | Installing Mitsubishi 12k Wall Mounted System & PANASONIC: Bath fan with venting & Dryer venting | $12,000 |
| 7141346-FR | 2026-05-05 | Mechanical / HVAC | 8216 8TH AVE NE | Installing Ductwork, kitchen range venting, make up air (over 400 CFM range) and Panasonic fan. | $12,000 |
| 7137807-FR | 2026-04-13 | Mechanical / HVAC | 1611 EDGEWOOD AVE SW | INSTALLING HISENSE A2L: 27K / 3/ cassette ductless install, HISENSE A2L: 36K / ductless heat pump / 3-cassette, PANASONIC bath fans & venting | $35,000 |
| 7137812-RF | 2026-04-13 | Mechanical / HVAC | 1611 EDGEWOOD AVE SW | INSTALLING HISENSE A2L: 27K / 3/ cassette ductless install, HISENSE A2L: 36K / ductless heat pump / 3-cassette , PANSONIC bath fan & venting | $35,000 |
| 7136498-FR | 2026-04-03 | Mechanical / HVAC | 6210 LAKE SHORE DR S | Installing ductwork and PANASONIC: Bath fan with venting | $4,000 |
| 7136490-FR | 2026-04-03 | Mechanical / HVAC | 3604 SW GRAHAM ST | InstallING Ductwork: 2-floors, Dryer venting, PANASONIC: Bath fan with venting | $10,000 |
| 7135312-RF | 2026-03-26 | Mechanical / HVAC | 4315 5TH AVE NW | Install MITSUBISHI: A2L 36K / 4-cassette heat pump system | $22,000 |
| 7135313-FR | 2026-03-26 | Mechanical / HVAC | 4315 5TH AVE NW | Install MITSUBISHI: A2L 36K / 4-cassette heat pump system | $22,000 |
| 7088326-ME | 2026-03-05 | Mechanical / HVAC | 1605 5TH AVE N | Install MITSUBISHI: 24K / 2 wall cassette install, per plan. | $16,210 |
| 7131873-RF | 2026-03-04 | Mechanical / HVAC | 2554 30TH AVE W | Install MITSUBISHI: SM/4-ton R-454 with A.H. & Ductwork: 2-floors | $83,000 |
| 7131867-FR | 2026-03-04 | Mechanical / HVAC | 2554 30TH AVE W | Install MITSUBISHI: SM/4-ton R-454 with A.H. & Ductwork: 2-floors | $83,000 |
| 7129619-FR | 2026-02-20 | Mechanical / HVAC | 3003 65TH AVE SW | Install Ductwork, Kitchen range venting, Barometric by-pass make up air, Bath fan venting and Dryer venting. | $6,000 |
| 7091414-ME | 2026-02-12 | Mechanical / HVAC | 1605 5TH AVE N | INSTALLING MITSUBISHI: 15K single cassette system R-454, per plans. | $11,930 |
| 7125289-RF | 2026-01-16 | Mechanical / HVAC | 1605 5TH AVE N | Installing MITSUBISHI: 15K single cassette system R-454 | $13,000 |
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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