Chengco Inc.
Panel upgrade electrician working in San Francisco. Licensed since 2000.
- License active
- No workers' comp: the business told the state it has no employees
13 jobs on San Francisco permits, 2022 to 2026: 12 panel upgrades, 1 EV charger installation. 292nd 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 786927, active in the state's records on Sep 23, 2026ElectricalNo complaints or citations on the board's public record. | Checks out |
| Workers' comp? | No workers' comp: the business told the state it has no employeesThis covers their crew if someone is hurt. It is not insurance for your home. | Ask them |
| In business? | Licensed since 2000 | |
| Jobs on record | 13 jobs on San Francisco permits, 2022 to 2026: 12 panel upgrades, 1 EV charger installation292nd 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 786927 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 value (not a price)
Their typical permit lists $4,500 (half list more, half less)
That is the figure written on the permit form, which can be far from what you pay. What panel upgrade jobs cost in San Francisco.
Get 2 or 3 written quotes.
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
3 jobs in the last 12 months, down from 6 the year before
Where they work most
- 941095 jobs
- 941332 jobs
- 941082 jobs
- 941072 jobs
- 941161 job
Jobs by kind of work
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
A row marked ×2 or more stands for that many similar jobs on one day in one ZIP code.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Apr 17, 2026 | EV chargerInstall 50 amp car charger | 94116 | $1,200 |
| Dec 31, 2025 | Panel upgradeReplace 5 or 6 meter and 5 or 6 electrical panel | 94133 | $20,000 |
| Nov 5, 2025 | Panel upgradeRelocate electrical panel to the hallway | 94109 | $4,500 |
| Sep 22, 2025 | Panel upgrade (×2, same day)Relocarte electrical panel in the closet to the hallway | 94109 | $4,000 each |
| Jul 24, 2025 | Panel upgradeSurvey permit for the replacement of electrical panel location | 94108 | not stated |
| Jul 24, 2025 | Panel upgradeReplace federal pacific panel and main | 94109 | $15,000 |
| Jul 14, 2025 | Panel upgradeFirst and second floors: replace 7 electrical panel throughout the building | 94108 | $15,000 |
| Feb 24, 2025 | Panel upgradeSurvey for new electrical panel location (no work) | 94109 | not stated |
| Jul 17, 2024 | Panel upgrade#4: relocate panel to the living room | 94107 | $2,500 |
| Jul 10, 2024 | Panel upgradeServey for upgrade electrical panel for elevator panel | 94102 | $1,000 |
| Jul 2, 2024 | Panel upgradeUnit 3- relcoated subpanel from closet to hallway | 94107 | not stated |
| Oct 5, 2022 | Panel upgradeReplace 7 electrical panel | 94133 | $9,000 |
What to ask before you hire
About Chengco Inc.
- Ask who will do the work. Anyone they pay to work on your home must be covered by workers' comp.
- 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 Chengco Inc.
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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.
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