Diablo Solar Services Inc
Solar installer working in Marin County. Licensed since 1984.
- License 454228, contr bond susp in the state's records on Sep 23, 2026
- Workers' comp on file
5 solar system jobs on Marin County permits, 2022 to 2025.
The state showed this license as "contr bond susp" on Sep 23, 2026. Do not hire until that is cleared.
What the public records show
From the state's license records and the city's permits, one question at a time.
| Question | Records show | Mark |
|---|---|---|
| Licensed? | License 454228, contr bond susp in the state's records on Sep 23, 2026Electrical, solarThe board's public record lists 1 item, 1 open. See the record below. | Problem |
| Workers' comp? | Workers' comp policy on file with the stateThis covers their crew if someone is hurt. It is not insurance for your home. | On file |
| In business? | Licensed since 1984 | |
| Jobs on record | 5 solar system jobs on Marin County permits, 2022 to 2025Every permit we have for them is solar system.Our Marin County permit records cover October 2021 to July 2026.Of their 5 solar system permits, 1 mention a battery. |
Records: the state license board and City of Marin County permits.
State license board record
Last checked Oct 4, 2026. This may have changed. Check it on CSLB.
How to read this
The Contractors State License Board lists complaints it has sent for legal action, citations it has issued, and warning letters. A complaint or accusation is an allegation, not a finding. A citation is the board's finding that a rule was broken; the contractor can appeal it. Complaints closed in the contractor's favor are never listed. Most contractors have no items.
Citation: not final, as of Oct 4, 2026Aug 11, 2026 · Citation 2 2026 1204
The board issued a citation on Aug 11, 2026. The citation is not final.
Charges listed: failed to report license changes; willful or fraudulent act; license personnel variation
Source: California Contractors State License Board, checked Oct 4, 2026. Look up license 454228 on CSLB
Cost and timing
All solar system jobs in Marin County: $17,000 to $44,000
Half of 2,700 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Solar with a battery in Marin County: $24,000 to $56,000 (869 permits)
How to read this range
Contractors write a job value on the permit form, and the city uses it to set the permit fee. It is not the contract price, and it is often lower than what you pay. A quarter of the permits list less than this range, and a quarter list more. Use it to see if a quote is in the normal range.
Permit value (not a price)
Their typical permit lists $19,285 (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
Where they work most
- 949043 jobs
- 949601 job
- 949411 job
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Feb 26, 2025 | SolarAdding tesla powerwall3 to existing solar system | 94904 | $19,285 |
| Jul 8, 2024 | SolarRooftop Solar-Thermal System | 94960 | $11,841 |
| Mar 20, 2023 | Solar, 9.84 kW9.84kw ROOF TOP PHOTOVOLTAIC SYSTEM (N) 24 x PANASONIC EVPV410H SOLAR MODULES (N) ENPHASE… | 94941 | $42,000 |
| Nov 21, 2022 | SolarRooftop Solar Thermal System - Express | 94904 | $11,055 |
| Aug 23, 2022 | Solar, 10.08 kW10.08 kW roof mounted photovoltaic system with ESS | 94904 | $65,000 |
What to ask before you hire
About Diablo Solar Services Inc
- Do not hire until the state shows the license as active.
- 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 Diablo Solar Services Inc
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