COMPANY RECORD · MARIN COUNTY, CA
Semper Solaris Construction Inc — permit history in Marin County, CA
Semper Solaris Construction Inc appears on 36 Marin County permit records from 2020 through 2026, most often electrical (73% of the record).
Permit categories
| Category | Permits | Share |
|---|---|---|
| Electrical | 27 | 73% |
| Mechanical / HVAC | 10 | 27% |
2 categories, as classified by the issuing authority. Small categories stay visible rather than being rounded away.
Activity by year
| Year | Permits issued |
|---|---|
| 2020 | 5 |
| 2021 | 12 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 8 |
| 2025 | 2 |
| 2026 | 1 |
Busiest year on record: 2021, with 12 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 |
|---|---|
| 2590 VINEYARD RD, NOVATO, CA 94947 | 2026-02-09 |
| 30 CORTE CAYUGA, GREENBRAE, CA 94904 | 2025-09-23 |
| 122 HAWTHORN WAY, SAN RAFAEL, CA 94903 | 2024-09-13 |
| 206 STANFORD AVE, MILL VALLEY, CA 94941 | 2024-08-27 |
| 951 SMITH RD, MILL VALLEY, CA 94941 | 2024-08-07 |
| 2749 HEATHERSTONE DR, SAN RAFAEL, CA 94903 | 2024-07-08 |
| 718 ESTANCIA WAY, SAN RAFAEL, CA 94903 | 2024-05-14 |
| 109 GREGORY DR, FAIRFAX, CA 94930 | 2024-04-05 |
| 61 MILLAND DR, MILL VALLEY, CA 94941 | 2023-05-31 |
| 40 LEGEND RD, SAN ANSELMO, CA 94960 | 2023-02-10 |
| 33 VAN RIPPER CT, SAN ANSELMO, CA 94960 | 2022-12-30 |
| 41 SHELL RD, MILL VALLEY, CA 94941 | 2022-12-07 |
| 7 LOCUST AVE, KENTFIELD, CA 94904 | 2022-08-29 |
| 359 MARIN AVE, MILL VALLEY, CA 94941 | 2022-08-04 |
31 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $250 to $89,835, median $5,739. Addresses appear as the authority published them. A permit is a filing at an address, not a completed job there.
Permits on record
36 permits; open the full list
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| B45809 | 2026-02-09 | Electrical | 2590 VINEYARD RD, NOVATO, CA 94947 | $4,000 | |
| B44006 | 2025-09-23 | Electrical | 30 CORTE CAYUGA, GREENBRAE, CA 94904 | CONVERT EXISTING SPLIT GAS SYSTEM TO SPLIT HEAT PUMP SYSTEM IN SAME LOCATIONS. 7.5 HSPF2 AIR HANDLER IN INDOOR CLOSET, 17 SEER2 4 TON HEAT PUMP IN BACKYARD. ADD NEW 220V CIRCUIT TO | $17,858 |
| B44006 | 2025-09-23 | Mechanical / HVAC | 30 CORTE CAYUGA, GREENBRAE, CA 94904 | CONVERT EXISTING SPLIT GAS SYSTEM TO SPLIT HEAT PUMP SYSTEM IN SAME LOCATIONS. 7.5 HSPF2 AIR HANDLER IN INDOOR CLOSET, 17 SEER2 4 TON HEAT PUMP IN BACKYARD. ADD NEW 220V CIRCUIT TO | $17,858 |
| B39480 | 2024-09-13 | Electrical | 122 HAWTHORN WAY, SAN RAFAEL, CA 94903 | 1- 125A LOAD CENTER (N) LOAD CENTER | $250 |
| B39431 | 2024-09-09 | Mechanical / HVAC | 122 HAWTHORN WAY, SAN RAFAEL, CA 94903 | SPLIT SYSTEM OUT CONVERT GAS TO ELECTRIC HEAT PUMP IN SAME LOCATIONS: AIR HANDLER IN CLOSET HSPF 8; AC HP CONDENSER 14 SEER 3 TONS AND 1 RETURN | $24,380 |
| B39271 | 2024-08-27 | Mechanical / HVAC | 206 STANFORD AVE, MILL VALLEY, CA 94941 | Install 5 ton 14 seer Condenser and coil only Coil: CE60D44210L004 Condenser: ASXN406010 | $15,892 |
| B39033 | 2024-08-07 | Mechanical / HVAC | 951 SMITH RD, MILL VALLEY, CA 94941 | ADD ON AC IN BACKYARD SEER 14 3 TONS | $15,486 |
| B38641 | 2024-07-08 | Mechanical / HVAC | 2749 HEATHERSTONE DR, SAN RAFAEL, CA 94903 | Install 2 ton Condenser and coil Condenser: ASXN403610 Coil: CE36D44140R004 Condenser on right hand side of home No alterations to ductwork. New nest thermostat. | $12,280 |
| B38029 | 2024-05-14 | Electrical | 718 ESTANCIA WAY, SAN RAFAEL, CA 94903 | MAIN SERVICE PANEL UPGRADED TO NEW 225/200AMPS | $22,250 |
| B37578 | 2024-04-05 | Electrical | 109 GREGORY DR, FAIRFAX, CA 94930 | Upgrading main service panel to 225/200 | $3,900 |
| B37475 | 2024-03-26 | Electrical | 2749 HEATHERSTONE DR, SAN RAFAEL, CA 94903 | Main Service Panel Upgrade to 125A/100A NCF | $3,500 |
| B34110 | 2023-05-31 | Mechanical / HVAC | 61 MILLAND DR, MILL VALLEY, CA 94941 | relocate furnace to attic and r8 reduct/5supplies & 1 return | $5,700 |
| B32520 | 2023-02-10 | Electrical | 40 LEGEND RD, SAN ANSELMO, CA 94960 | REVISION ON #B32306 We have added a new 30A AC Disconnect (for Battery) on the planset please see Sheet E2, E3, E7, E8.3, E9.1, and JHA | $19,900 |
| B32306 | 2023-01-20 | Electrical | 40 LEGEND RD, SAN ANSELMO, CA 94960 | 1- TESLA POWERWALL 2 (N) ESS BATTERY(14 kWh), 1- TESLA BACKUP GATEWAY 2 (N) ESS MID, 1- 125A BACKUP LOAD CENTER (N) LOAD CENTER(S), 1- (N) ESS DISCONNECT SWITCH, 1- E)200A/(N)1 | $19,900 |
| B32165 | 2022-12-30 | Electrical | 33 VAN RIPPER CT, SAN ANSELMO, CA 94960 | Revision on #B31331 ------------------ 1. We have corrected the sub-panel breaker size from 60A to 100A please see sheet E7. 2. We have changed the interconnection of the enphase c | $89,835 |
| B31864 | 2022-12-07 | Electrical | 41 SHELL RD, MILL VALLEY, CA 94941 | 3- ENPHASE IQ BATTERY 10T (N) ESS BATTERY(31.5 kWh), 1- ENPHASE IQ SYSTEM CONTROLLER 2 (N) ESS MID, 1- (N) ESS DISCONNECT SWITCH | $42,799 |
| B31331 | 2022-10-11 | Electrical | 33 VAN RIPPER CT, SAN ANSELMO, CA 94960 | 2- ENPHASE IQ BATTERY 10 T (N) ESS BATTERY(21 kWh), 1- ENPHASE IQ SYSTEM CONTROLLER 2 (N) ESS MID, 1- (N) 200A BACKUP LOAD CENTER (N) LOAD CENTER(S) | $23,985 |
| B30871 | 2022-08-29 | Electrical | 7 LOCUST AVE, KENTFIELD, CA 94904 | 1- ENPHASE IQ BATTERY 10 (N) ESS BATTERY, 1- ENPHASE IQ SYSTEM CONTROLLER 2 (N) ESS MID, 1- 125A ENPHASE IQ COMBINER 4/4C (N) AC COMBINER(S, 1- (N) ESS DISCONNECT SWITCH, 1- 125A | $45,700 |
| B30583 | 2022-08-04 | Electrical | 359 MARIN AVE, MILL VALLEY, CA 94941 | INSTALL 14 (N) Q.PEAK DUO BLK ML-G10+ 400 SOLAR MODULES(5.600 kW), (N) 200A LOAD CENTER WILL ACT AS BACKUP LOADS CENTER, 2 X (N) ENPHASE IQ BATTERY 10 ENERGY STORAGE SYSTEM(21 kWh) | $23,900 |
| B30370 | 2022-07-13 | Mechanical / HVAC | 61 MILLAND DR, MILL VALLEY, CA 94941 | Replacing for a New Central HVAC system Equipment Type: Central HVAC Cooling Equipment Heating Equipment Manufacturer: Semper Solaris Manufacturer: Semper Solaris System Size: 3 | $5,739 |
| B27318 | 2021-10-06 | Electrical | 461 W LIVE OAK DR, MILL VALLEY, CA 94941 | Main Service Upgrade ---1 (N)200 / (N)200 MAIN SERVICE PANEL | $2,200 |
| B27005 | 2021-09-14 | Electrical | 25 KNOLL WAY, SAN RAFAEL, CA 94903 | 1 (E)400 / (E)175 / (N)175 MAIN SERVICE PANEL UPGRADE | $2,300 |
| B26829 | 2021-09-08 | Electrical | 140 WILD HORSE VALLEY DR, NOVATO, CA 94947 | Main Service Upgrade 1 (E) 200A Bus NCF / (N) 175A Dibrated Main Breaker Service Point & Utility Metering POC for (N) TBG2 | $2,300 |
| B26891 | 2021-09-02 | Electrical | 1204 EL CIDE CT, MILL VALLEY, CA 94941 | 1 (N)200A METER & DISCONNECT MAIN SERVICE PANEL- stand alone meter service point & utility metering | $2,400 |
| B26604 | 2021-08-11 | Electrical | 704 ALTA VISTA RD, MILL VALLEY, CA 94941 | installing 1-(N) 225/(N)200 Main Service Panel | $2,400 |
| B26500 | 2021-08-04 | Electrical | 100 CORTE BALBOA, GREENBRAE, CA 94904 | 1 (N) 125A Meter & Disconnect Main Service Panel to an (E) Solar System | $2,300 |
| B26487 | 2021-08-03 | Electrical | 975 GREENHILL RD, MILL VALLEY, CA 94941 | 1 125A STAND ALONE METER (N) MAIN SERVICE PANEL | $2,300 |
| B25803 | 2021-05-21 | Electrical | 1215 LATTIE LN, MILL VALLEY, CA 94941 | (N) 1-225A/200A Main Service Panel | $3,500 |
| B25249 | 2021-03-24 | Mechanical / HVAC | 44 BRET HARTE RD, SAN RAFAEL, CA 94901 | Split System C/O | $12,777 |
| B25051 | 2021-03-04 | Electrical | 45 PILLSBURY LN, NOVATO, CA 94947 | Main Service Panel Upgrade --(N) 125A SELECTED LOAD CENTER 240V NEMA-3R (N) 225A BUS NCF (N) 200A MAIN BREAKER (N) 50A BRANCH BREAKER FEEDING (N) TBG ll SERVICE POINT & UTILITY MET | $3,500 |
| B25047 | 2021-03-04 | Electrical | 6 GOLDEN IRIS TER, SAN RAFAEL, CA 94903 | 1 (N) 200A Meter disconnect -Main Service Panel | $3,200 |
| B24542 | 2021-01-05 | Electrical | 3 IRVING DR, SAN ANSELMO, CA 94960 | a Main Electrical Panel Upgrade needed (E) 125amp to (N) 200amp upgrade, no added load | $2,500 |
| B24379 | 2020-12-09 | Electrical | 3 UNIONSTONE LN, SAN RAFAEL, CA 94903 | Adding a 200A meter socket | $3,450 |
| B24211 | 2020-11-18 | Mechanical / HVAC | 8 GUISELA CT, NOVATO, CA 94945 | CHANGE OUT OF 2 HEAT PUMP SPLIT SYSTEMS | $35,200 |
| B24212 | 2020-11-18 | Mechanical / HVAC | 700 BAY RD, MILL VALLEY, CA 94941 | CHANGE OUT OF DUCTLESS MINI SPLIT SYSTEM | $21,148 |
| B24116 | 2020-11-09 | Electrical | 916 ALTURAS WAY, MILL VALLEY, CA 94941 | rRevision for Corrections - 1. We have changed the #6 wire size between the main panel and backup gateway. Changes have been made on E7. 2. We have added the existing selected loa | $15,900 |
| B23958 | 2020-10-23 | Electrical | 615 DRAKE AVE, SAUSALITO, CA 94965 | We are going to be upgrading the main service panel From 125A to 200A. | $3,650 |
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 →