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Semper Solaris Construction Inc

Solar installer working in Marin County.

  • Marin County publishes no contractor license list we can check

83 jobs on Marin County permits, 2021 to 2025: 81 solar installations, 2 heat pump installations.

Get a quote from Semper Solaris Construction Inc

What the public records show

From the state's license records and the city's permits, one question at a time.

QuestionRecords showMark
Licensed?Marin County publishes no contractor license list we can checkThat says nothing about this business either way.Ask them
Jobs on record83 jobs on Marin County permits, 2021 to 2025: 81 solar installations, 2 heat pump installationsOur Marin County permit records cover October 2021 to July 2026.Of their 81 solar system permits, 36 mention a battery.

Records: the state license board and City of Marin County permits.

Cost and timing

Permit value (not a price)

Their typical permit lists $29,410 (half list more, half less)

That is the figure written on the permit form, which can be far from what you pay. What solar system jobs cost in Marin County.

Get 2 or 3 written quotes.

Track record

6 jobs in the last 12 months, down from 9 the year before

Q4 2021: 14 jobsQ1 2022: 9 jobsQ2 2022: 5 jobsQ3 2022: 5 jobsQ4 2022: 10 jobsQ1 2023: 3 jobsQ2 2023: 10 jobsQ4 2023: 2 jobsQ1 2024: 3 jobsQ2 2024: 4 jobsQ3 2024: 3 jobsQ4 2024: 1 jobQ1 2025: 1 jobQ2 2025: 1 jobQ3 2025: 6 jobsQ4 2025: 6 jobsBusiest: 14 jobsLatest: 6 jobs2022202320242025
Each bar is 3 months of permits. The tallest is 14 jobs, October to December 2021. Across Marin County, all contractors together had 65% fewer solar system jobs in the last 12 months than in the 12 months before.

Where they work most

  • 9490418 jobs
  • 9494116 jobs
  • 9490315 jobs
  • 949478 jobs
  • 949606 jobs

Jobs by kind of work

Latest jobs

Permit values are what the contractor wrote on the permit form, not what the owner paid.

DateWorkZIPOn the permit form
Dec 4, 2025Solar, 6.30 kW6.30 kw dc pv array system, 10 kwh energy storage system94937$49,741
Nov 19, 2025Solar, 4.1 kW4.1kw dc pv, 13.5kwh ess, 125a solar only load center94945$54,502
Nov 4, 2025Solar20.0 kWh ESS, 125A SOLAR LOAD CENTER94920$36,250
Oct 2, 2025Solar, 8.10 kW8.10kw dc pv, 13.5kwh94904$52,142
Oct 2, 2025Solar, 4.50 kW4.50kw dc pv94901$20,266
Oct 2, 2025SolarUninstall and reisntall of 30(e) rec 260 pe z-link solar modules after rerroofing94901$9,000
Sep 24, 2025SolarUninstallation and reinstallation of 18existing panasonic vbhn330sa17 solarmodules due to re-roofing94941$5,400
Sep 23, 2025Heat pumpConvert existing split gas system to split heat pump system in same locations94904$17,858
Sep 15, 2025Solar, 3.90 kW3.90 kw rated dc solar photovoltaic system, 13.5 kwh energy storage system94960$34,000
Aug 12, 2025Solar, 7.6 kW(2) tesla inverters 7.6kW each, (35) 410W solar panels- equaling 14.35kW DC in size and (1) 200A…94960$38,900
Aug 11, 2025Solar, 5.85 kW5.85 kw dc rated pv array94903$24,900
Jul 1, 2025Solar, 4.345 kW11- csi solar co94937$39,105
Apr 3, 2025SolarThis installation includes the uninstall & reinstall of (08) existing ja…94929$2,400
Jan 15, 2025Solar(38) canadian solar cs6r 390ms-hl (blk) solar modules (2) tesla backup gateway 3 (2) tesla…94904$73,893
Dec 18, 2024Solar, 5.070 kW13- CSI SOLAR CO. CS6R-390MS-HL (BLK) (N) SOLAR MODULES(5.070 kW), 13- ENPHASE IQ8PLUS-72-2-US…94947$19,039
Sep 9, 2024Heat pumpSplit system out convert gas to electric heat pump in same94903$24,380
Aug 15, 2024Solar, 0.78 kW·(0.78) kw dc rated pv array, ·(13.5) kwh rated energy storage system, · (2) canadian solar…94904$57,375
Jul 20, 2024SolarUninstallation and reinstallation ofexisting 25 sunpower spr-x22-360-d-acsolar modules due to…94904$7,500
Jun 11, 2024Solar, 6.63 kW17- csi solar co94904$51,588
May 13, 2024Solar, 8.61 kW·(8.61) kw dc rated pv array, ·(27) kwh rated energy storage system, · (2) tesla powerwall 3 ess +…94903$72,446
Apr 10, 2024Solar, 5.85 kW(5.85) kw dc rated pv array, ·(13.5) kwh rated energy storage system, ·(15) canadian solar…94930$42,160
Apr 4, 2024Solar, 14.35 kW·(14.35) kw dc rated pv array,(27) kwh rated energy storage system,(35) hanwha q cells q.peak duo…94960$91,606
Feb 23, 2024SolarUninstall & reinstall existing 11 silfabsil-320 nl solar modules94941$3,300
Feb 7, 2024Solar, 8.69 kW(8.69) kw dc rated pv array, ·(10) kwh rated energy storage system, · (22)canadian solar…94903$47,330
Jan 2, 2024Solar, 4.050 kW(4.050) kw dc rated pv array, ·(1) 125a enphase iq combiner 4c, · (10) hanwha q.peak duo blk…94903$16,992
Nov 8, 2023Solar, 6.800 kW17- - SILFAB SIL 400HC+ (N) SOLAR MODULES(6.800 kW), 17- ENPHASE IQ8M-72-2-US(240V) (N)…94930$49,416
Oct 16, 2023Solar, 6.80 kW·(6.80) kw dc rated pv array, ·(17)silfab sil-400 hc+ modules, ·(17) enphase iq8m-72-2-us…94947$26,993
Jun 19, 2023Solar, 10.800 kW27- SILFAB SOLAR INC. SIL-400 HC+ (N) SOLAR MODULES(10.800 kW), 27- - ENPHASE IQ8M-72-2-US(240V)…94901$71,320
May 25, 2023Solar, 7.200 kW18- SILFAB 400W HC+ (N) SOLAR MODULES(7.200 kW), 18- ENPHASE IQ8M-72-2-US(240V) (N) INVERTERS, 1-…94941$29,920
May 25, 2023Solar, 10.125 kW25- Q CELLS Q.PEAK DUO BLK ML-G10+405 (N) SOLAR MODULES(10.125 kW), 25- Enphase IQ8M-72-2-US [240V]…94941$42,519
May 9, 2023Solar, 18.800 kW47-SILFAB SIL-400 HC+ (N) SOLAR MODULES(18.800 kW), 47- ENPHASE IQ8M-72-2-US (N) INVERTERS, 1- …94947$87,667
May 9, 2023Solar, 5.60 kW(5.60) kw dc rated pv array, -(14) silfab sil-400 hc+ solar modules, -(1) tesla 1538000-xx-y…94903$23,780
May 2, 2023Solar, 5.600 kW14- SILFAB SIL-400HC+ (N) SOLAR MODULES(5.600 kW), 14- ENPHASE IQ8M-72-2-US (240V) (N)…94904$23,520
Apr 27, 2023Solar, 19.200 kW48- - SILFAB SOLAR INC. SIL-400 HC+ (N) SOLAR MODULES(19.200 kW), 48- ENPHASE IQ8M-72-2-US(240V)…94904$81,993
Apr 25, 2023Solar, 11.600 kW29- SILFAB SIL-400 HC+ (N) SOLAR MODULES(11.600 kW), 29- ENPHASE IQ8M-72-2-US (N) INVERTERS, 1-…94904$50,475
Apr 25, 2023Solar, 3.600 kW9- SILFAB SOLAR INC. SIL-400 HC+ (N) SOLAR MODULES(3.600 kW), 9- ENPHASE IQ8M-72-2-US(240V) (N)…94949$14,900
Apr 25, 2023Solar, 3.645 kW9-hanwha q.peak duo blk ml-g10+ 405 (n) solar modules(3.645kw), 9- enphase iq8m-72-2-us(240v) (n)…94903$17,172
Mar 16, 2023Solar, 3.330 kW9- SILFAB SIL-370HC (N) SOLAR MODULES(3.330 kW), 9-ENPHASE IQ8PLUS-72-2-US (240V) (N)…94937$33,900
Mar 14, 2023Solar, 6.000 kW15- HANWHA Q.PEAK DUO BLK ML-G10+ 400 (N) SOLAR MODULE(6.000 kW), 15- ENPHASE IQ8M-72-2-US(240V) …94941$78,200
Jan 26, 2023Solar, 6.800 kW17- HANWHA Q.PEAK DUO BLK ML-G10+ 400 (N) SOLAR MODULE(6.800 kW), 17- ENPHASE IQ8M-72-2-US (N)…94941$29,410

What to ask before you hire

About Semper Solaris Construction Inc

  • Ask for their license number and check it with the state.
  • Ask what the warranty covers and for how long, in writing.

Worth asking any solar installer

  • Can you show me proof of liability insurance and your bond?
  • What size system, which panels and inverter, and what will it make in a year?
  • Is my roof good for 25 more years, and what if it needs work first?
  • Who handles the permit and the utility's approval to turn it on?

Get a quote from Semper Solaris Construction Inc

Five quick questions. We pass your request to Semper Solaris Construction Inc.

You decide who to hire. Your details go only to the contractors you pick. How we use your details

1. Where is the job?

We match contractors who work near it. We never ask for your street address.

2. What do you need?

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3. When do you want to start?
4. What is your rough budget?

A range is fine. It helps contractors reply with a real number.

5. Where should we send it?

Your contact details go only to who you pick here.

Sent. We have your request.

We pass it to Semper Solaris Construction Inc. Replies usually come within a few days.

Your job room keeps the request, your photos and every reply in one place, with an assistant that checks prices against city permits. Keep its link: it is the key to your job.

Open your job room

More solar installers near 94904 and 94941

See all 82 solar installers in Marin County, ranked by jobs

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