COMPANY RECORD · MARIN COUNTY, CA
Tech Air Inc — permit history in Marin County, CA
Tech Air Inc appears on 34 Marin County permit records from 2023 through 2026, all of them mechanical / hvac.
Permit categories
| Category | Permits | Share |
|---|---|---|
| Mechanical / HVAC | 34 | 100% |
Activity by year
| Year | Permits issued |
|---|---|
| 2023 | 6 |
| 2024 | 9 |
| 2025 | 13 |
| 2026 | 6 |
Busiest year on record: 2025, with 13 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 |
|---|---|
| 49 CREEKSIDE DR, SAN RAFAEL, CA 94903 | 2026-08-14 |
| 13 VIA CHEPARRO, GREENBRAE, CA 94904 | 2026-07-26 |
| 5 GRANDE PASEO, SAN RAFAEL, CA 94903 | 2026-05-11 |
| 6935 LUCAS VALLEY RD, NICASIO, CA 94946 | 2026-04-15 |
| 16 LAVERNE AVE, MILL VALLEY, CA 94941 | 2026-03-01 |
| 1205 LATTIE LN, MILL VALLEY, CA 94941 | 2026-01-15 |
| 711 APPLEBERRY DR, SAN RAFAEL, CA 94903 | 2025-11-30 |
| 307 ISLAND DR, MILL VALLEY, CA 94941 | 2025-11-30 |
| 501 PARK WAY, MILL VALLEY, CA 94941 | 2025-10-12 |
| 47 PIGEON HOLLOW RD, SAN RAFAEL, CA 94901 | 2025-10-12 |
| 339 RICHARDSON WAY, MILL VALLEY, CA 94941 | 2025-09-01 |
| 20 LANCASTER AVE, KENTFIELD, CA 94904 | 2025-08-27 |
| 1261 LATTIE LN, MILL VALLEY, CA 94941 | 2025-08-17 |
| 16 MT DIABLO CIR, SAN RAFAEL, CA 94903 | 2025-07-31 |
34 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $2,000 to $42,800, median $17,750. Addresses appear as the authority published them. A permit is a filing at an address, not a completed job there.
Permits on record
34 permits; open the full list
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| B47918 | 2026-08-14 | Mechanical / HVAC | 49 CREEKSIDE DR, SAN RAFAEL, CA 94903 | $2,000 | |
| B47627 | 2026-07-26 | Mechanical / HVAC | 13 VIA CHEPARRO, GREENBRAE, CA 94904 | $5,000 | |
| B46756 | 2026-05-11 | Mechanical / HVAC | 5 GRANDE PASEO, SAN RAFAEL, CA 94903 | $16,026 | |
| B46500 | 2026-04-15 | Mechanical / HVAC | 6935 LUCAS VALLEY RD, NICASIO, CA 94946 | $40,000 | |
| B46048 | 2026-03-01 | Mechanical / HVAC | 16 LAVERNE AVE, MILL VALLEY, CA 94941 | $40,000 | |
| B45504 | 2026-01-15 | Mechanical / HVAC | 1205 LATTIE LN, MILL VALLEY, CA 94941 | Replace furnace | $10,625 |
| B44950 | 2025-11-30 | Mechanical / HVAC | 711 APPLEBERRY DR, SAN RAFAEL, CA 94903 | Install mini split | $7,667 |
| B44951 | 2025-11-30 | Mechanical / HVAC | 307 ISLAND DR, MILL VALLEY, CA 94941 | Replace furnace and ducting | $15,250 |
| B44318 | 2025-10-12 | Mechanical / HVAC | 501 PARK WAY, MILL VALLEY, CA 94941 | Install Ductless mini split system | $22,000 |
| B44319 | 2025-10-12 | Mechanical / HVAC | 47 PIGEON HOLLOW RD, SAN RAFAEL, CA 94901 | Install New Mini Split & replace RTU like for like | $17,000 |
| B43684 | 2025-09-01 | Mechanical / HVAC | 339 RICHARDSON WAY, MILL VALLEY, CA 94941 | Change furnace like for like | $5,000 |
| B43640 | 2025-08-27 | Mechanical / HVAC | 20 LANCASTER AVE, KENTFIELD, CA 94904 | Replace furnace and add AC | $25,000 |
| B43499 | 2025-08-17 | Mechanical / HVAC | 1261 LATTIE LN, MILL VALLEY, CA 94941 | Install mini split heat pump | $13,678 |
| B43303 | 2025-07-31 | Mechanical / HVAC | 16 MT DIABLO CIR, SAN RAFAEL, CA 94903 | Install Ductless mini split system | $28,000 |
| B42971 | 2025-07-02 | Mechanical / HVAC | 1117 W CALIFORNIA AVE, MILL VALLEY, CA 94941 | Remove gas furnace and install ducted heat pump using existing ducts | $21,500 |
| B42832 | 2025-06-21 | Mechanical / HVAC | 1259 LATTIE LN, MILL VALLEY, CA 94941 | Install mini split ductless system | $35,000 |
| B42640 | 2025-06-04 | Mechanical / HVAC | 52 HANKEN DR, KENTFIELD, CA 94904 | Install ductless mini split system | $12,000 |
| B42117 | 2025-04-22 | Mechanical / HVAC | 265 SUMMIT AVE, SAN RAFAEL, CA 94901 | Remove 2 gas furnaces and install 2 electric heat pumps | $42,800 |
| B41249 | 2025-02-15 | Mechanical / HVAC | 10 CORTE COMODA, GREENBRAE, CA 94904 | Remove gas furnace install electric heat pump | $26,000 |
| B40476 | 2024-12-09 | Mechanical / HVAC | 369 DOLAN AVE, MILL VALLEY, CA 94941 | Remove gas furnace and replace with electric heat pump system | $21,625 |
| B39895 | 2024-10-22 | Mechanical / HVAC | 45 RIDGE AVE, MILL VALLEY, CA 94941 | Remove gas furnace and install electric heat pump ducted | $28,000 |
| B39412 | 2024-09-08 | Mechanical / HVAC | 901 GREENHILL RD, MILL VALLEY, CA 94941 | Install Ductless heat pump system | $20,000 |
| B38916 | 2024-07-30 | Mechanical / HVAC | 176 CORTE ANITA, GREENBRAE, CA 94904 | Remove Gas Furnace and Install Multi Zone Electric Heat Pump | $26,760 |
| B38721 | 2024-07-13 | Mechanical / HVAC | 127 MCALLISTER AVE, KENTFIELD, CA 94904 | replace Gas Furnace With Heat Pump | $13,200 |
| B38010 | 2024-05-11 | Mechanical / HVAC | 152 ALMONTE BLVD, MILL VALLEY, CA 94941 | Replace Gas Furnace With Electric Heat Pump | $14,000 |
| B37981 | 2024-05-08 | Mechanical / HVAC | 20 CORTE DE SABLA, GREENBRAE, CA 94904 | Replace gas furnace with electric heat pump | $18,500 |
| B37492 | 2024-03-28 | Mechanical / HVAC | 210 STANFORD AVE, MILL VALLEY, CA 94941 | Remove Gas Heating and install heat pump heating | $41,000 |
| B37266 | 2024-03-08 | Mechanical / HVAC | 39 CORTE MORADA, GREENBRAE, CA 94904 | Remove gas furnace and install heat pump | $19,765 |
| B36232 | 2023-11-27 | Mechanical / HVAC | 8 LIVE OAK WAY, KENTFIELD, CA 94904 | Replacing 2 existing furnaces with new furnaces. Adding heat pump to one furnace. No duct work. | $15,000 |
| B36175 | 2023-11-20 | Mechanical / HVAC | 78 MT MUIR CT, SAN RAFAEL, CA 94903 | Install mini split in cold spot | $9,000 |
| B35900 | 2023-10-25 | Mechanical / HVAC | 14 WASHINGTON AVE, SAN RAFAEL, CA 94903 | Install Heat Pump Ductless System | $12,630 |
| B35750 | 2023-10-11 | Mechanical / HVAC | 7 CIRCLE WAY, MILL VALLEY, CA 94941 | Remove gas furnace replace with heat pump | $19,000 |
| B35036 | 2023-08-14 | Mechanical / HVAC | 20 MORNING SUN AVE, MILL VALLEY, CA 94941 | Replace gas furnace and add air conditioning | $12,000 |
| B34238 | 2023-07-07 | Mechanical / HVAC | 167 VISTA GRANDE, GREENBRAE, CA 94904 | Replace gas furnace with electrical heat pump | $14,600 |
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 Marin County 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 →