Greatwall Building Construction Inc
Panel upgrade electrician based in San Carlos. Licensed since 2008.
- License active
- Workers' comp on file
9 jobs on San Francisco permits, 2022 to 2026: 4 panel upgrades, 1 EV charger installation, 1 heat pump installation, 1 remodel, 1 home addition, 1 ADU. 745th most panel upgrade permits of 1,063 contractors in San Francisco.
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 915513, active in the state's records on Sep 23, 2026General buildingNo complaints or citations on the board's public record. | Checks out |
| 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 2008 | |
| Jobs on record | 9 jobs on San Francisco permits, 2022 to 2026: 4 panel upgrades, 1 EV charger installation, 1 heat pump installation, 1 remodel, 1 home addition, 1 ADUThey are based in San Carlos. Work outside San Francisco is not in these records.745th most panel upgrade permits of 1,063 licensed contractors in San Francisco. That counts jobs, not quality.Our San Francisco permit records cover September 2021 to September 2026. |
Records: the state license board and City of San Francisco permits.
State license board record
Last checked Oct 4, 2026. This may have changed. Check it on CSLB.
No complaints or citations on the board's public record.
Source: California Contractors State License Board, checked Oct 4, 2026. Look up license 915513 on CSLB
Cost and timing
All panel upgrade jobs in San Francisco: $2,000 to $10,000
Half of 11,145 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Panel upgrades in San Francisco: $2,000 to $10,000 (6,396 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 timeline
Across San Francisco, a panel upgrade permit stays open about 77 days, from permit to final inspection
This is not how long the crew works at your home: most of it is waiting for the inspection. Ask them how many days the work takes. The permit itself is usually issued the same day. How long panel upgrade jobs take.
Track record
Jobs per quarter
Where they work most
- 941345 jobs
- 941223 jobs
- 941121 job
Jobs by kind of work
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 |
|---|---|---|---|
| Apr 28, 2026 | Panel upgradeTwo bedrooms, 2 baths, family room & media room on ground flr | 94134 | not stated |
| Apr 28, 2026 | EV chargerTwo bedrooms, 2 baths, family room & media room on ground flr | 94134 | not stated |
| May 16, 2025 | Panel upgradeNew subpanel at residential level, new lighting, new electrical, new outlets, new power to kitchen… | 94122 | not stated |
| May 16, 2025 | Heat pumpReplace (e) furnce w/ electric heat pump minisplit, add bathroom fans, & kitchen exhaust | 94122 | not stated |
| Apr 1, 2025 | RemodelNo details on the permit | 94122 | $80,000 |
| Feb 7, 2023 | Panel upgradeProvide new electrical for 2 unit house with 2 main panel | 94134 | not stated |
| Jun 1, 2022 | Panel upgradeProvide sub-panel, lighting, & outlets | 94112 | not stated |
| Mar 16, 2022 | AdditionDevelop new adu per ordinance 95-17 on 1st floor with 7'10" 1st floor rear addition, 216 sf | 94134 | $200,000 |
| Mar 16, 2022 | ADUDevelop new adu per ordinance 95-17 on 1st floor with 7'10" 1st floor rear addition, 216 sf | 94134 | $200,000 |
What to ask before you hire
About Greatwall Building Construction Inc
- Ask what the warranty covers and for how long, in writing.
Worth asking any panel upgrade electrician
- Can you show me proof of liability insurance and your bond?
- What size panel, and does the utility need to change the service to my house?
- Who arranges the power shutoff with the utility?
- Who pulls the permit, and who meets the inspector?
Get a quote from Greatwall Building Construction Inc
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