COMPANY RECORD · BOULDER, CO
Timberline Mechanical Systems — permit history in Boulder, CO
Timberline Mechanical Systems appears on 453 Boulder permit records from 2015 through 2026, most often mechanical / hvac (98.7% of the record).
Permit categories
| Category | Permits | Share |
|---|---|---|
| Mechanical / HVAC | 447 | 98.7% |
| Electrical | 6 | 1.3% |
2 categories, as classified by the issuing authority. Small categories stay visible rather than being rounded away.
Activity by year
| Year | Permits issued |
|---|---|
| 2015 | 33 |
| 2016 | 46 |
| 2017 | 46 |
| 2018 | 33 |
| 2019 | 34 |
| 2020 | 46 |
| 2021 | 41 |
| 2022 | 53 |
| 2023 | 30 |
| 2024 | 35 |
| 2025 | 36 |
| 2026 | 20 |
Busiest year on record: 2022, with 53 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 |
|---|---|
| 3701 ARAPAHOE AVE | 2026-07-29 |
| 3401 ARAPAHOE AVE 201 | 2026-06-09 |
| 3301 ARAPAHOE AVE 310 | 2026-06-09 |
| 3601 ARAPAHOE AVE 429 | 2026-06-09 |
| 1401 PEARL ST | 2026-05-13 |
| 3601 ARAPAHOE AVE 226 | 2026-05-13 |
| 3601 ARAPAHOE AVE 109 | 2026-04-29 |
| 3301 ARAPAHOE AVE 302 | 2026-04-06 |
| 3301 ARAPAHOE AVE 101 | 2026-04-06 |
| 3701 ARAPAHOE AVE 417 | 2026-04-06 |
| 3401 ARAPAHOE AVE 118 | 2026-04-06 |
| 5200 MANHATTAN CIR | 2026-04-01 |
| 3473 28TH ST | 2026-03-30 |
| 3100 BROADWAY 108 | 2026-03-20 |
332 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $0 to $445,216, median $10,965. Addresses appear as the authority published them. A permit is a filing at an address, not a completed job there.
Permits on record
453 permits; open the 50 most recent
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| MEC2026-00990 | 2026-07-29 | Mechanical / HVAC | 3701 ARAPAHOE AVE | replace like for like boiler **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure | $99,250 |
| MEC2026-00985 | 2026-06-15 | Mechanical / HVAC | 3701 ARAPAHOE AVE | Replace Glycol Ramp LIKE FOR LIKE **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pres | $12,441 |
| MEC2026-00938 | 2026-06-09 | Mechanical / HVAC | 3401 ARAPAHOE AVE 201 | Replace PDX WH with a COMBI BOILER for unit 201 in multi-family building - no electrical **Any electrical work required beyond a like-for-like replacement of equipment will requir | $11,763 |
| MEC2026-00936 | 2026-06-09 | Mechanical / HVAC | 3301 ARAPAHOE AVE 310 | replace like for like 75 gallon water heater for unit 310 of multi family building - no electrical **Any electrical work required beyond a like-for-like replacement of equipment w | $7,024 |
| MEC2026-00937 | 2026-06-09 | Mechanical / HVAC | 3601 ARAPAHOE AVE 429 | Replace PDX WH with a COMBI BOILER for unit 429 of multi-family building - no electric **Any electrical work required beyond a like-for-like replacement of equipment will require | $11,766 |
| MEC2026-00758 | 2026-05-13 | Mechanical / HVAC | 1401 PEARL ST | replace like for like exhaust fan in commercial building - no electrical **Any electrical work required beyond a like-for-like replacement of equipment will require an electrical | $10,164 |
| MEC2026-00673 | 2026-05-13 | Mechanical / HVAC | 3601 ARAPAHOE AVE 226 | Replace like for like water heater in unit 226 of multi family building - no electrical **Any electrical work required beyond a like-for-like replacement of equipment will require | $5,555 |
| MEC2026-00659 | 2026-04-29 | Mechanical / HVAC | 3601 ARAPAHOE AVE 109 | like for like 75 gallon water heater **Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electri | $7,263 |
| MEC2026-00416 | 2026-04-06 | Mechanical / HVAC | 3301 ARAPAHOE AVE 302 | PDX WH TO A COMBI BOILER **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure test | $10,477 |
| MEC2026-00498 | 2026-04-06 | Mechanical / HVAC | 3301 ARAPAHOE AVE 101 | LIKE FOR LIKE WATER HEATER **Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electrical scope. | $7,024 |
| MEC2026-00442 | 2026-04-06 | Mechanical / HVAC | 3701 ARAPAHOE AVE 417 | like for like water heater **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure te | $5,300 |
| MEC2026-00497 | 2026-04-06 | Mechanical / HVAC | 3401 ARAPAHOE AVE 118 | LIKE FOR LIKE WATER HEATER **Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electrical scope. | $5,362 |
| MEC2026-00480 | 2026-04-01 | Mechanical / HVAC | 5200 MANHATTAN CIR | REPLACE LIKE FOR LIKE WATER HEATER **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pre | $10,962 |
| MEC2026-00341 | 2026-03-30 | Mechanical / HVAC | 3473 28TH ST | Replace like for like water boiler in mechanical room of building. | $13,646 |
| MEC2026-00342 | 2026-03-20 | Mechanical / HVAC | 3100 BROADWAY 108 | Replace furnace. **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To | $4,348 |
| MEC2025-02363 | 2026-03-16 | Mechanical / HVAC | 1215 CEDAR AVE | replace like for like water heater **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pre | $19,948 |
| MEC2026-00340 | 2026-03-16 | Mechanical / HVAC | 3555 ARAPAHOE AVE | Replace 2 like for like electric heaters. | $10,517 |
| MEC2026-00208 | 2026-02-09 | Mechanical / HVAC | 1505 PEARL ST 304 | replace like for like power direct water heater **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances mus | $8,379 |
| MEC2026-00166 | 2026-02-09 | Mechanical / HVAC | 2800 KALMIA AVE A | replace like for like water heater # 2 and # 5 there are located in the mechanical room for the whole building **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANC | $10,146 |
| MEC2025-02343 | 2026-01-28 | Mechanical / HVAC | 3835 NORTHBROOK DR | Replace like for like water heater and like for like boiler both located in main mechanical room of building. **Any electrical work required beyond a like-for-like replacement of | $26,023 |
| MEC2025-01869 | 2025-11-04 | Mechanical / HVAC | 900 PEARL ST 203 | replace 1 wshp **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To fa | $12,531 |
| MEC2025-01896 | 2025-11-03 | Mechanical / HVAC | 1655 WALNUT ST 306 | REPLACE CONDENSING UNTI AND FAN COIL UNIT. **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must un | $29,427 |
| MEC2025-01895 | 2025-11-03 | Mechanical / HVAC | 1655 WALNUT ST 305 | REPLACE CONDENSING UNIT AND FAN COIL UNIT **Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the el | $29,016 |
| MEC2025-01897 | 2025-11-03 | Mechanical / HVAC | 1655 WALNUT ST 203 | REPLACE CONDENSING UNIT AND FAN COIL UNIT. **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must un | $29,016 |
| MEC2025-01881 | 2025-10-31 | Mechanical / HVAC | 302 27TH ST | Install replacement water heater. **Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electrical | $2,553 |
| MEC2025-01473 | 2025-10-30 | Mechanical / HVAC | 1655 WALNUT ST 309 | REPLACE CU & FCU in #309 **All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic | $12,900 |
| MEC2025-01472 | 2025-10-30 | Mechanical / HVAC | 1655 WALNUT ST 301 | *Voided for inactivity - no inspections for 180 days* REPLACE CU & FCU in #301 **PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents | $11,700 |
| MEC2025-01136 | 2025-08-12 | Mechanical / HVAC | 3000 COLORADO AVE | *Voided for inactivity - no inspections for 180 days* REPLACE PHASE 2 CHILLER | $99,500 |
| MEC2025-01133 | 2025-08-12 | Mechanical / HVAC | 1750 55TH ST | REPLACE TUBE HEATER | $6,400 |
| MEC2025-01294 | 2025-08-12 | Mechanical / HVAC | 3000 COLORADO AVE | *Voided for inactivity - no inspections for 180 days* Replace the American Standard boiler with a model number of G-1013 and serial number of 18-J1 with one (1) new Weil Mclain boi | $60,144 |
| MEC2025-01293 | 2025-08-12 | Mechanical / HVAC | 500 MANHATTAN DR D2 | *Voided for inactivity - no inspections for 180 days* Replacing one (1) A/C system (evaporator & heat pump condenser coil). All new plastic glued vents for fuel burning appliances | $5,750 |
| MEC2025-01181 | 2025-07-28 | Mechanical / HVAC | 4565 NASSAU PL | REPLACE SPLIT SYSTEM (Indoor and Outdoor Unit) | $9,200 |
| MEC2025-01163 | 2025-07-28 | Mechanical / HVAC | 3601 ARAPAHOE AVE 432 | *Voided for inactivity - no inspections for 180 days* Like for Like Replacement of Fan Coil Unit for Unit D432 | $5,700 |
| MEC2025-01135 | 2025-07-18 | Mechanical / HVAC | 5311 WESTERN AVE | Installing 1 MAU | $62,700 |
| MEC2025-01134 | 2025-07-18 | Mechanical / HVAC | 2762 BELLA VISTA LN | Replace Furnace in Rm 9 | $11,200 |
| MEC2025-01086 | 2025-07-14 | Mechanical / HVAC | 6797 WINCHESTER CIR | REPLACE RTU-8 (please note this RTU uses both ELECTRIC and NATURAL GAS) | $35,300 |
| MEC2025-00995 | 2025-06-25 | Mechanical / HVAC | 2830 E COLLEGE AVE 311 | **VOID-INSPECTIONS NOT COMPLETED WITHIN 180 DAYS** Replace Condenser | $3,500 |
| MEC2025-00986 | 2025-06-24 | Mechanical / HVAC | 3805 NORTHBROOK DR | Like for Like Water Heater Replacement | $7,000 |
| MEC2025-00987 | 2025-06-24 | Mechanical / HVAC | 3825 NORTHBROOK DR | Like for Like Water Heater Replacement | $7,000 |
| MEC2025-00983 | 2025-06-23 | Mechanical / HVAC | 302 27TH ST | REPLACE Furnace and Mini Split | $12,000 |
| MEC2025-00928 | 2025-06-12 | Mechanical / HVAC | 2845 VALMONT RD | Replace Mini Split in Yoga Room | $15,600 |
| MEC2025-00907 | 2025-06-11 | Mechanical / HVAC | 2800 KALMIA AVE B | Replace Water Heater (#2) for Building B *See MEC2025-00689 for other building* | $11,080 |
| MEC2025-00822 | 2025-06-10 | Mechanical / HVAC | 1655 WALNUT ST 106 | Replacing CU & FCU for unit #106 | $12,700 |
| MEC2025-00708 | 2025-05-28 | Mechanical / HVAC | 5311 WESTERN AVE | Install New MAU | $16,400 |
| MEC2025-00710 | 2025-05-06 | Mechanical / HVAC | 2500 30TH ST | Replace RTU-2 | $22,100 |
| MEC2025-00713 | 2025-05-06 | Mechanical / HVAC | 2500 30TH ST | Replace RTU-4 (10Ton) | $22,100 |
| MEC2025-00712 | 2025-05-06 | Mechanical / HVAC | 2500 30TH ST | Replace RTU-3 | $19,900 |
| MEC2025-00689 | 2025-05-02 | Mechanical / HVAC | 2800 KALMIA AVE B | Replace Water Heater and Exp Tank | $17,500 |
| MEC2025-00690 | 2025-05-02 | Mechanical / HVAC | 3601 ARAPAHOE AVE 403 | *Voided for inactivity - no inspections for 180 days* REPLACE WATER HEATER | $5,500 |
| MEC2025-00637 | 2025-04-23 | Mechanical / HVAC | 2830 E COLLEGE AVE 311 | Replace Furnace | $2,700 |
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 →