Winnco Builders Inc
Licensed general contractor in Granada Hills, Los Angeles, California
Winnco Builders Inc holds CSLB licence 1037580, active, licensed since 30 Mar 2018. Bonded for $25,000 with Western Surety Company. 1 disclosure on the CSLB record.
Read before hiring: 1 CSLB disclosure in the last 10 years. Details below, from the board's own record.




Report card
- Licence activeCSLB #1037580, class B. Issued 30 Mar 2018, expires 31 Jan 2028.
- Licensed 9 yrsSince 30 Mar 2018.
- Bonded$25,000 with Western Surety Company, since 20 May 2026. California requires the same $25,000 bond of every contractor.
- Workers' comp insuredState Compensation Insurance Fund, policy 9378077, valid to 4 Apr 2027.
- 1 board disclosureDetails are below and on the CSLB record.CSLB record
- Website shows the licenceTheir own site displays licence #1037580.
- 10 building permits since 2020Pulled under this licence (City of Los Angeles, LADBS), most recently 20 Jan 2023.
Checked against the Contractors State License Board (CSLB) register on 4 Nov 2026.
About Winnco Builders Inc
Winnco Builders Inc. is a Los Angeles contractor that handles residential and commercial construction and remodeling projects.
- Serves
- Los Angeles
- Estimates
- Free estimates
- Ownership
- Family-owned
- People on the licence
- Dillon Anthony Negrete (qualifier, CEO and president)
From Winnco Builders Inc's own website, read 5 Nov 2026. We only show what the site states.
Board record: disclosures
As published on the CSLB licence page. Older items may have been resolved; dates matter.
- 20 Jan 2026 · Citations 2 2024 001307 · CompletedViolated building law - no permit
Recent permits
Building permits pulled under licence #1037580, from City of Los Angeles, LADBS open data, which names contractors up to 19 May 2023. Locations are shown to ZIP code only.
- 20 Jan 2023 · Bldg-Alter/Repair · ZIP 90016REPLACE EXISTING DAMAGED POST. WORK PER ENGINEER. "COMPLY WITH DEPARTM
- 14 Oct 2022 · Bldg-Alter/Repair · ZIP 90034Replace 4 window(s). Same size, location, number, type. Replace 2 door
- 12 Sep 2022 · Bldg-Alter/Repair · ZIP 90034Replace 8 window(s). Same size, location, number, type. Interior bathr
- 8 Oct 2021 · Bldg-Alter/Repair · ZIP 91367Replace drywall/plaster (patch and paint). Non-structural repair only.
- 24 Sep 2021 · Nonbldg-Alter/Repair · ZIP 90064Parking lot re-striping and handicap ramp installation. See comments.
Why it ranks #9569 of 9,857 general contractors in Los Angeles
Score 32.9 / 100. Claiming this listing or using Theo never changes it. How we rank
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