Cornerstone Dba Ag Construction
Remodeling contractor based in San Anselmo. Licensed since 2009.
- License active
- Workers' comp on file
15 jobs on San Francisco permits, 2022 to 2025: 7 remodels, 6 panel upgrades, 1 home addition, 1 seismic retrofit. 426th most remodel permits of 1,150 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 930085, 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 2009 | |
| Jobs on record | 15 jobs on San Francisco permits, 2022 to 2025: 7 remodels, 6 panel upgrades, 1 home addition, 1 seismic retrofitThey are based in San Anselmo. Work outside San Francisco is not in these records.Their permits mention 5 bathrooms, 4 kitchens, 1 garage, 1 deck.426th most remodel permits of 1,150 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 930085 on CSLB
Cost and timing
All remodel jobs in San Francisco: $20,000 to $78,000
Half of 14,013 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Kitchen remodels in San Francisco: $25,000 to $89,000 (8,666 permits)
- Bathroom remodels in San Francisco: $20,000 to $80,000 (10,979 permits)
- Basement remodels in San Francisco: $50,000 to $290,000 (316 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 $20,000 (half list more, half less)
That is the figure written on the permit form, which can be far from what you pay. Kitchen jobs alone: typical permit $55,000 (4 permits, a small sample). What remodel jobs cost in San Francisco.
Get 2 or 3 written quotes.
Permit timeline
Across San Francisco, a remodel permit stays open about about 6 months, 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 remodel jobs take.
Track record
Jobs per quarter
Where they work most
- 941166 jobs
- 941314 jobs
- 941102 jobs
- 941222 jobs
- 941271 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 |
|---|---|---|---|
| Jul 21, 2025 | AdditionBathroom addition (no change to footprint) in e) garage area | 94116 | $20,000 |
| Jun 2, 2025 | RemodelRemodel (e) single family home to include a (n) bathroom from garage space | 94131 | $8,000 |
| Jun 2, 2025 | Panel upgradeRun 2 new circuits to the new bathroom, fan, new light and switch in hallway | 94131 | not stated |
| Dec 24, 2024 | RemodelNo details on the permit | 94116 | $80,000 |
| Dec 24, 2024 | Panel upgradeUpgrade electrical panel, new circuits to bathroom's laundry | 94116 | not stated |
| Sep 6, 2024 | RemodelRemodel kitchen and 2 bathrooms in kind | 94131 | $20,000 |
| Sep 6, 2024 | Panel upgradeNew circuits for kitchen appliances and lights | 94131 | not stated |
| Jan 31, 2024 | Panel upgradeUpgrade electrical panel | 94110 | not stated |
| Jan 30, 2024 | RemodelRemodel kitchen in kind | 94110 | $15,000 |
| Apr 10, 2023 | RemodelInterior remodel to provide interior stairs and relocate kitchen, remove existing exterior stair… | 94122 | $140,000 |
| Apr 10, 2023 | Panel upgradeAdd new lights on 2/d and 1/f, 22 lights total | 94122 | not stated |
| Dec 21, 2022 | RemodelIn-kind remodeling of 1 bathroom(s) in 2nd fl with 0 shower pan(s) | 94127 | $11,000 |
| Mar 17, 2022 | Seismic retrofitRebuild of (e) yard masonary walls | 94116 | $50,000 |
| Mar 8, 2022 | RemodelTo comply with nov 202024049/202037363/202056524: reconfig kitchen bathrooms, add one bathroom &… | 94116 | $90,000 |
| Mar 8, 2022 | Panel upgradeRe-wire whole house | 94116 | not stated |
What to ask before you hire
About Cornerstone Dba Ag Construction
- Ask what the warranty covers and for how long, in writing.
Worth asking any remodeling contractor
- Can you show me proof of liability insurance and your bond?
- What is in the price, and how do you price changes once work starts?
- Who will run the job day to day, and who are the subcontractors?
- Who pulls the permits, and what is the payment schedule?
Get a quote from Cornerstone Dba Ag Construction
Five quick questions. We pass your request to Cornerstone Dba Ag Construction.
Request for Cornerstone Dba Ag Construction
- Where
- Job
- Start
- Budget
- Goes to
You decide who to hire. Your details go only to the contractors you pick. How we use your details
Sent. We have your request.
We pass it to Cornerstone Dba Ag Construction. 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 roomMore remodeling contractors near 94116 and 94131
- Owner
- Mission Home Remodeling Inc
- We Do Construction Inc.
- Box Canyon Builders Dba the Englander
- Brady Construction Inc
- Broad Oaks Construction Inc
See all 1,150 remodeling contractors in San Francisco, ranked by jobs
Run this business? Claim this page to get requests by email and reply to homeowners here.