COMPANY RECORD · BOULDER, CO
Kj Thomas Construction LLC — permit history in Boulder, CO
Kj Thomas Construction LLC appears on 109 Boulder permit records from 2015 through 2026, most often mechanical / hvac (98.2% of the record).
Permit categories
| Category | Permits | Share |
|---|---|---|
| Mechanical / HVAC | 107 | 98.2% |
| Electrical | 2 | 1.8% |
2 categories, as classified by the issuing authority. Small categories stay visible rather than being rounded away.
Activity by year
| Year | Permits issued |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 7 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 16 |
| 2021 | 25 |
| 2022 | 11 |
| 2023 | 9 |
| 2024 | 15 |
| 2025 | 10 |
| 2026 | 6 |
Busiest year on record: 2021, with 25 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 |
|---|---|
| 3970 SAVANNAH CT | 2026-08-25 |
| 780 RACQUET LN | 2026-07-30 |
| 2790 EMERSON AVE | 2026-07-30 |
| 1707 ALPINE AVE | 2026-07-24 |
| 1308 OAKLEAF CIR | 2026-04-22 |
| 245 S 39TH ST | 2026-03-02 |
| 310 HOPI PL | 2025-12-23 |
| 1727 NORWOOD AVE | 2025-12-16 |
| 1010 CEDAR AVE | 2025-10-09 |
| 2401 BROADWAY | 2025-09-11 |
| 4605 NASSAU PL | 2025-09-11 |
| 550 HARTFORD DR | 2025-08-28 |
| 5219 PIERRE ST | 2025-08-28 |
| 2225 MESA DR | 2025-08-28 |
100 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $100 to $33,880, median $7,106. 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 |
|---|---|---|---|---|---|
| MEC2026-01539 | 2026-08-25 | Mechanical / HVAC | 3970 SAVANNAH CT | Replacing existing Furnace and AC with new Furnace and Heat Pump **Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit f | $14,782 |
| MEC2026-01273 | 2026-07-30 | Mechanical / HVAC | 780 RACQUET LN | Replacement of existing AC with new Heat Pump **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must | $6,587 |
| MEC2026-01292 | 2026-07-30 | Mechanical / HVAC | 2790 EMERSON AVE | Replacing existing AC and Furnace with new Heat Pump and Furnace for single family dwelling **Any electrical work required beyond a like-for-like replacement of equipment will req | $10,051 |
| MEC2026-01241 | 2026-07-24 | Mechanical / HVAC | 1707 ALPINE AVE | Replacement of existing AC with new Heat Pump *All exterior equipment must be installed at least 15" above grade due to floodplain **Any electrical work required beyond a like-for | $6,037 |
| MEC2026-00620 | 2026-04-22 | Mechanical / HVAC | 1308 OAKLEAF CIR | Replacement of existing A/C and Furnace with new Heat Pump and Furnace **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel | $9,516 |
| MEC2026-00294 | 2026-03-02 | Mechanical / HVAC | 245 S 39TH ST | Replace existing AC and Furnace with new Heat Pump and Furnace **Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for | $14,492 |
| MEC2025-02306 | 2025-12-23 | Mechanical / HVAC | 310 HOPI PL | VOID-180 Days no activity Replacing two existing A/Cs and two furnaces with two new heat pumps and two new furnaces. **Any electrical work required beyond a like-for-like replacem | $16,871 |
| MEC2025-02238 | 2025-12-16 | Mechanical / HVAC | 1727 NORWOOD AVE | ***VOID-180 Days no activity*** Replacing existing furnace with a new one **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for f | $3,739 |
| MEC2025-01684 | 2025-10-09 | Mechanical / HVAC | 1010 CEDAR AVE | *Voided for inactivity - no inspections requested within 180 days.* 3 head mini-split replacement **All new plastic glued vents for fuel burning appliances must undergo pressure | $7,783 |
| MEC2025-01415 | 2025-09-11 | Mechanical / HVAC | 2401 BROADWAY | Replacement of existing RTU | $33,120 |
| MEC2025-01499 | 2025-09-11 | Mechanical / HVAC | 4605 NASSAU PL | VOID-180 Days No Activity Replacement of existing furnace and A/C with a furnace and heat pump **All new plastic glued vents for fuel burning appliances must undergo pressure test | $11,080 |
| MEC2025-01406 | 2025-08-28 | Mechanical / HVAC | 550 HARTFORD DR | Installation of a new furnace and A/C **All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide | $8,545 |
| MEC2025-01409 | 2025-08-28 | Mechanical / HVAC | 5219 PIERRE ST | Replacement of two existing A/Cs and two existing furnaces **All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection pr | $11,906 |
| MEC2025-01410 | 2025-08-28 | Mechanical / HVAC | 2225 MESA DR | Replacing gas furnace with new gas furnace **Please provide a project valuation. Project valuation should represent the total time and materials related to the project scope. 50% | $3,727 |
| MEC2025-01416 | 2025-08-27 | Mechanical / HVAC | 2620 THORNBIRD PL | Replacement of existing furnace All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photogr | $1,873 |
| MEC2025-00318 | 2025-03-04 | Mechanical / HVAC | 2734 ARBOR GLEN PL | VOID- 180 Days no activity Replacement of existing furnace & heat pump | $8,630 |
| MEC2024-01870 | 2024-12-13 | Mechanical / HVAC | 345 S 44TH ST | Replacement of existing heat pump | $10,416 |
| MEC2024-01826 | 2024-12-06 | Mechanical / HVAC | 3140 KITTRELL CT | Replacement of existing furnace | $3,100 |
| MEC2024-01685 | 2024-11-13 | Mechanical / HVAC | 1017 LARAMIE BLVD H | VOID-180 Days no activity Replacement of existing furnace | $2,199 |
| MEC2024-01684 | 2024-11-13 | Mechanical / HVAC | 1017 LARAMIE BLVD H | Replacement of existing furnace | $2,199 |
| MEC2024-01612 | 2024-11-05 | Mechanical / HVAC | 1553 48TH ST | VOID-180 Days no activity Replacement of existing A/C | $4,585 |
| MEC2024-01473 | 2024-10-10 | Mechanical / HVAC | 2060 NORWOOD AVE | ***Voided for inactivity - no inspection within 180 days.*** Replace existing heat pump | $6,241 |
| MEC2024-01209 | 2024-08-21 | Mechanical / HVAC | 3530 19TH ST | VOID- Over 180 Days no activity Replacement of existing mini-split | $7,733 |
| MEC2024-01197 | 2024-08-19 | Mechanical / HVAC | 3292 4TH ST | Replace existing A/C | $6,539 |
| MEC2024-00838 | 2024-07-15 | Mechanical / HVAC | 2305 PINE ST | VOID- Over 180 days no activity Replace an existing heat pump | $2,443 |
| MEC2024-00821 | 2024-07-11 | Mechanical / HVAC | 485 COLLEGE AVE | Putting in a new Mitsubishi heat pump | $4,350 |
| MEC2024-00741 | 2024-06-03 | Mechanical / HVAC | 7744 VALMONT RD | ***Permit Voided - No inspections call within 180 days*** Replace existing A/C | $8,788 |
| MEC2024-00617 | 2024-05-09 | Mechanical / HVAC | 5550 STONEWALL PL 21 | ***Permit voided due to inactivity - no inspections within180 days*** Replacement of an existent furnace | $1,059 |
| MEC2024-00608 | 2024-05-08 | Mechanical / HVAC | 1760 LINDEN AVE | VOID- 180 Days no activity Replacement of an existing A/C unit | $3,428 |
| MEC2024-00555 | 2024-04-29 | Mechanical / HVAC | 637 S BROADWAY | *Voided for inactivity - no inspections for 180 days* Replace an existing RTU | $18,670 |
| MEC2024-00111 | 2024-01-19 | Mechanical / HVAC | 1303 MARIPOSA AVE | Replacing furnace | $4,083 |
| MEC2023-01738 | 2023-11-28 | Mechanical / HVAC | 1740 CEDAR AVE | *Voided for inactivity - no inspections within 180 days* Replacement gas boiler | $3,416 |
| MEC2023-01551 | 2023-10-17 | Mechanical / HVAC | 3889 NORTHBROOK DR | Replace furnace water heater | $3,731 |
| MEC2023-01491 | 2023-10-09 | Mechanical / HVAC | 3175 ENDICOTT DR | Replace furnace and A/C | $6,803 |
| MEC2023-01480 | 2023-10-06 | Mechanical / HVAC | 3175 ENDICOTT DR | Replacement A/C and furnace | $6,803 |
| MEC2023-01455 | 2023-10-05 | Mechanical / HVAC | 2970 COLBY DR | New heat pump and comfort coil | $7,106 |
| MEC2023-01140 | 2023-10-04 | Mechanical / HVAC | 965 36TH ST | New A/C | $3,200 |
| MEC2023-01358 | 2023-09-22 | Mechanical / HVAC | 3140 GALENA WAY | New A/C | $12,040 |
| MEC2023-01189 | 2023-08-17 | Mechanical / HVAC | 1130 QUINCE AVE | ***VOIDED FOR INACTIVITY OVER 180 DAYS***Replacement of AC | $9,378 |
| MEC2023-01150 | 2023-08-03 | Mechanical / HVAC | 2475 AGATE LN | VOID- 180 Days no activity New A/C | $1,150 |
| MEC2022-02038 | 2022-11-29 | Mechanical / HVAC | 160 S 31ST ST | ***VOIDED FOR INACTIVIEY OVER 180 DAYS*** replace furnace | $3,141 |
| MEC2022-02011 | 2022-11-16 | Mechanical / HVAC | 1285 OAKLEAF CIR | ***VOIDED DUE TO INACTIVITY OVER 180 DAYS*** Replace furnace and AC | $10,137 |
| MEC2022-01241 | 2022-07-05 | Mechanical / HVAC | 825 MEADOW GLEN DR | AC Replacement | $3,921 |
| MEC2022-01169 | 2022-06-23 | Mechanical / HVAC | 2065 JOSLYN PL | Installation of Heat Pump & coil | $6,757 |
| MEC2022-01130 | 2022-06-13 | Mechanical / HVAC | 3840 CLOVERLEAF DR | *Voided for inactivity - no inspections within 180 days* Install Furnace & AC | $13,648 |
| MEC2022-00915 | 2022-05-10 | Mechanical / HVAC | 1540 HIGH ST | *Voided for inactivity - no inspections within 180 days* Installation of Air Handler | $3,609 |
| MEC2022-00853 | 2022-05-03 | Mechanical / HVAC | 2401 BROADWAY | *Voided for inactivity - requirements not received within 180 days* Replace Furnace | $2,710 |
| MEC2022-00653 | 2022-04-07 | Mechanical / HVAC | 325 S 43RD ST | Install Furnace/AC | $7,562 |
| MEC2022-00466 | 2022-03-10 | Mechanical / HVAC | 1135 ALBION WAY | Replace Boiler | $3,950 |
| MEC2022-00373 | 2022-03-01 | Mechanical / HVAC | 2731 IRIS AVE | VOID- 180 Days no activity Replace boiler, replace Central A/C, replace hydronic heating unit with mini split heat pump | $26,002 |
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 Boulder 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 →