COMPANY RECORD · SEATTLE, WA
Castle Custom Mechanical LLC — permit history in Seattle, WA
Castle Custom Mechanical LLC appears on 109 Seattle permit records from 2015 through 2025, all of them mechanical / hvac.
Permit categories
| Category | Permits | Share |
|---|---|---|
| Mechanical / HVAC | 109 | 100% |
Activity by year
| Year | Permits issued |
|---|---|
| 2015 | 20 |
| 2016 | 7 |
| 2017 | 21 |
| 2018 | 8 |
| 2019 | 8 |
| 2020 | 8 |
| 2021 | 17 |
| 2022 | 7 |
| 2023 | 10 |
| 2024 | 2 |
| 2025 | 1 |
Busiest year on record: 2017, with 21 permits. One project can account for several filings, so read this as filing activity rather than workload.
Where they worked
| Address in source | Most recent permit |
|---|---|
| 4517 48TH AVE SW | 2025-11-20 |
| 1800 M L KING JR WAY S | 2024-03-04 |
| 3222 35TH AVE W | 2024-01-19 |
| 5611 30TH AVE SW | 2023-11-30 |
| 4235 51ST AVE S | 2023-11-20 |
| 1800 M L King Jr WAY S | 2023-10-26 |
| 76 CEDAR ST | 2023-08-15 |
| 7538 31ST AVE NW | 2022-09-01 |
| 6243 1ST AVE NW | 2022-08-30 |
| 4042 31ST AVE W | 2022-05-06 |
| 4819 S OREGON ST | 2022-02-16 |
| 4014 Linden AVE N | 2021-10-25 |
| 5417 S orcas ST | 2021-10-21 |
| 5417 S ORCAS ST | 2021-10-20 |
61 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $2,200 to $90,000, median $10,000. Addresses appear as the authority published them. A permit is a filing at an address, not a completed job there.
Permits on record
109 permits; open the 50 most recent
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| 7117669-FR | 2025-11-20 | Mechanical / HVAC | 4517 48TH AVE SW | Mini-Split Systems, ventilation | $30,000 |
| 6998250-ME | 2024-03-04 | Mechanical / HVAC | 1800 M L KING JR WAY S | Install (5) one to one mini-split systems; unit ventilation and (4) HRV systems, per plan. | $90,000 |
| 7005455-FR | 2024-01-19 | Mechanical / HVAC | 3222 35TH AVE W | installation OF 2 HEAD MINI-SPLIT SYSTEM AND VENTILATION | $10,000 |
| 6998622-RF | 2023-11-30 | Mechanical / HVAC | 5611 30TH AVE SW | 2 mini-split heat pump systems. Unit ventilation | $15,000 |
| 6997591-FR | 2023-11-27 | Mechanical / HVAC | 3222 35TH AVE W | HVAC ducting | $10,000 |
| 6997590-RF | 2023-11-27 | Mechanical / HVAC | 3222 35TH AVE W | Install a 4 head mini-split system | $10,000 |
| 6997282-FR | 2023-11-20 | Mechanical / HVAC | 4235 51ST AVE S | Install Mini-Split ducted system and 1 Wall head | $10,000 |
| 6997280-RF | 2023-11-20 | Mechanical / HVAC | 4235 51ST AVE S | Install a Multi zone Mini-Split system | $10,000 |
| 6993158-RF | 2023-10-26 | Mechanical / HVAC | 1800 M L King Jr WAY S | Install 5 mini-Splits | $80,000 |
| 6983686-RF | 2023-08-31 | Mechanical / HVAC | 4235 51ST AVE S | Mini-split 2 head system | $15,000 |
| 6983696-FR | 2023-08-31 | Mechanical / HVAC | 4235 51ST AVE S | ducted mini-split air handler and 1 wall mounted head | $15,000 |
| 6980784-FR | 2023-08-15 | Mechanical / HVAC | 76 CEDAR ST | Replacing Air Handler | $10,000 |
| 6979629-RF | 2023-08-07 | Mechanical / HVAC | 76 CEDAR ST | Installation of a 2 ton Mini-Split system | $10,000 |
| 6920051-RF | 2022-09-01 | Mechanical / HVAC | 7538 31ST AVE NW | line sets for A/C | $10,000 |
| 6919756-RF | 2022-08-30 | Mechanical / HVAC | 6243 1ST AVE NW | line set for mini split. | $10,000 |
| 6916867-FR | 2022-08-15 | Mechanical / HVAC | 7538 31ST AVE NW | Ducted Mini-Split System | $10,000 |
| 6916840-FR | 2022-08-15 | Mechanical / HVAC | 6243 1ST AVE NW | Ducted Mini-Split System | $10,000 |
| 6898309-FR | 2022-05-06 | Mechanical / HVAC | 4042 31ST AVE W | INSTALL GAS FURNACE WITH DUCTING | $10,000 |
| 6883030-RF | 2022-02-16 | Mechanical / HVAC | 4819 S OREGON ST | Install 2 Mini-Split Ducted Systems | $15,000 |
| 6883032-FR | 2022-02-16 | Mechanical / HVAC | 4819 S OREGON ST | 2 Ducted Mini-Split Systems | $15,000 |
| 6865270-RF | 2021-10-25 | Mechanical / HVAC | 4014 Linden AVE N | Mini-Split System | $10,000 |
| 6865272-FR | 2021-10-25 | Mechanical / HVAC | 4014 Linden AVE N | Mini-Split Ducted system | $10,000 |
| 6864648-FR | 2021-10-21 | Mechanical / HVAC | 5417 S orcas ST | Mini-Split ducted system | $7,000 |
| 6864646-RF | 2021-10-20 | Mechanical / HVAC | 5417 S ORCAS ST | Mini-Split System | $7,000 |
| 6858353-FR | 2021-09-14 | Mechanical / HVAC | 1035 NE 92nd ST | Ducting off a Mini-Split 1 ton Air Handler | $10,000 |
| 6858350-RF | 2021-09-14 | Mechanical / HVAC | 1035 NE 92ND ST | installation of a 1 ton ducted mini-split system | $10,000 |
| 6856198-FR | 2021-08-31 | Mechanical / HVAC | 5430 40th AVE SW | Venting of Bath Fans, Dryer & Range Hood. Install 2 Head Mini-Split | $8,000 |
| 6856194-RF | 2021-08-31 | Mechanical / HVAC | 5430 40th AVE SW | 2 head Mini-Split | $8,000 |
| 6851067-RF | 2021-07-30 | Mechanical / HVAC | 822 33RD AVE | Lin-set for Heat Pump | $8,000 |
| 6851000-FR | 2021-07-30 | Mechanical / HVAC | 822 33RD AVE | Re-work Installation of Ducting & Furnace | $10,000 |
| 6837949-RF | 2021-05-11 | Mechanical / HVAC | 538 S CLOVERDALE ST | 2 Head Mini-Split System | $8,000 |
| 6824717-RF | 2021-02-22 | Mechanical / HVAC | 308 22ND AVE E | 4 Head Mini-Split System | $15,000 |
| 6824713-FR | 2021-02-22 | Mechanical / HVAC | 308 22ND AVE E | 4 Head Mini--Split System | $15,000 |
| 6817335-RF | 2021-01-05 | Mechanical / HVAC | 3257 61st AVE SW | Air Conditioning System | $15,000 |
| 6817333-FR | 2021-01-05 | Mechanical / HVAC | 3257 61st AVE SW | Gas Furnace Ducted System | $15,000 |
| 6817328-FR | 2021-01-04 | Mechanical / HVAC | 4615 S WARSAW ST | Mini-Split System | $15,000 |
| 6817325-RF | 2021-01-04 | Mechanical / HVAC | 4615 S WARSAW ST | Mini-Split, 3 Heads | $15,000 |
| 6805472-FR | 2020-10-15 | Mechanical / HVAC | 1536 SHENANDOAH DR E | Install (2) mini-split ducted heat pump systems. | $20,000 |
| 6805475-RF | 2020-10-14 | Mechanical / HVAC | 1536 SHENANDOAH DR E | Line-sets for Mini-Split Air Handlers | $20,000 |
| 6798080-FR | 2020-08-27 | Mechanical / HVAC | 9252 4TH AVE NW | Mini-Split System | $5,000 |
| 6797280-RF | 2020-08-24 | Mechanical / HVAC | 9252 4TH AVE NW | Line-sets & Condensate lines for a 4 head Mini-Split System | $10,000 |
| 6785886-RF | 2020-06-09 | Mechanical / HVAC | 9252 4TH AVE NW | 4 Head Mini-Split System | $10,000 |
| 6785856-RF | 2020-06-08 | Mechanical / HVAC | 9252 4TH AVE NW | 4 Head Mini-Split System | $10,000 |
| 6770515-RF | 2020-02-07 | Mechanical / HVAC | 2311 S GRAHAM ST | Install Mitsubishi 3.5 Ton Mini-Split | $10,000 |
| 6770511-RF | 2020-02-07 | Mechanical / HVAC | 2309 S GRAHAM ST | Installing a Mitsubishi 3.5 Ton Mini-Split | $10,000 |
| 6753626-ME | 2019-12-14 | Mechanical / HVAC | 1920 4TH AVE | Install new hydronic heat pumps connecting to existing building loop and install new gas appliances connected to existing gas main sized to accommodate tenant requirement, per plan | $50,000 |
| 6762801-RF | 2019-12-13 | Mechanical / HVAC | 3828 36TH AVE SW | Linesets for 3 Mini-split heads | $7,000 |
| 6738311-ME | 2019-10-11 | Mechanical / HVAC | 1920 4TH AVE | Install new hydronic heat pumps connecting to existing building loop. Heat pumps shall comply with current energy code standards. Install new gas appliances connected to existin | $54,000 |
| 6743881-RF | 2019-08-19 | Mechanical / HVAC | 5210 13TH AVE S | Install Mini Split | $5,000 |
| 6743890-RF | 2019-08-19 | Mechanical / HVAC | 10041 30TH AVE SW | Install Mini-Split | $5,000 |
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 2025, 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 →