Wilko Builders Llc.
Heat pump installer based in Oakland. Licensed since 2022.
- License active
- Workers' comp on file
7 jobs on San Francisco permits, 2024 to 2026: 3 heat pump installations, 1 panel upgrade, 1 remodel, 1 home addition, 1 ADU. 217th most heat pump permits of 217 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 1091473, active in the state's records on Sep 23, 2026General building, plumbingNo 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 2022 | |
| Jobs on record | 7 jobs on San Francisco permits, 2024 to 2026: 3 heat pump installations, 1 panel upgrade, 1 remodel, 1 home addition, 1 ADUThey are based in Oakland. Work outside San Francisco is not in these records.217th most heat pump permits of 217 licensed contractors in San Francisco. That counts jobs, not quality.Our San Francisco permit records cover September 2021 to September 2026.Of their 3 heat pump permits, 2 mention ductless or mini-split units. |
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 1091473 on CSLB
Cost and timing
All heat pump jobs in San Francisco: $8,800 to $27,000
Half of 2,697 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Ductless mini-splits in San Francisco: $7,500 to $24,000 (918 permits)
- Ducted heat pumps in San Francisco: $10,000 to $34,000 (406 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 heat pump permit stays open about 45 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 heat pump jobs take.
Track record
Jobs per quarter
Where they work most
- 941184 jobs
- 941103 jobs
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 |
|---|---|---|---|
| Mar 18, 2026 | Panel upgradeNo details on the permit | 94110 | not stated |
| Feb 26, 2026 | Heat pumpRewew pm20240828638: hvac mini split system | 94118 | not stated |
| Feb 9, 2026 | RemodelRemodel of entire house and a 2nd story addition with front and rear roof decks on 2nd level | 94110 | $650,000 |
| Feb 9, 2026 | AdditionRemodel of entire house and a 2nd story addition with front and rear roof decks on 2nd level | 94110 | $650,000 |
| Aug 28, 2024 | Heat pumpHvac mini split system in adu | 94118 | not stated |
| Aug 28, 2024 | Heat pumpSupply and waste for adu | 94118 | not stated |
| Aug 19, 2024 | ADUTo establish state adu on ground floor and interior alterations/facade modifications, with… | 94118 | $142,000 |
What to ask before you hire
About Wilko Builders Llc.
- Ask what the warranty covers and for how long, in writing.
Worth asking any heat pump installer
- Can you show me proof of liability insurance and your bond?
- What size unit, and did you measure the house to choose it?
- Do my ducts or my electrical panel need work first?
- Who pulls the permit, and what rebates apply?
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See all 217 heat pump installers in San Francisco, ranked by jobs
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