Diekman R S & Associates, C-27 Landscaping Contractor in Danville, CA
Diekman R S & Associates operating as a partnership holds California contractor license #593789, which is currently expired (lapsed May 31, 2026) and not valid to contract until it is renewed. First issued in 1990, the license has been on the CSLB roster for 36 years. It carries a single CSLB classification: C-27 — Landscaping Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and active workers' compensation coverage from Hartford Casualty Insurance Company. The business is based in Danville, in Contra Costa County, California.
- License Number
- 593789
- Issued
- May 15, 1990
- Status
- CLEAR
- Expires
- May 31, 2026
- Entity
- Partnership
- Surety
- American Contractors Indemnity Company
- Bond Number
- SC6309099
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Hartford Casualty Insurance Company
- Policy Number
- 57WECCA0BRW
- Effective
- Feb 23, 2026
- Expires
- Feb 23, 2027
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Diekman R S & Associates licensed in California?
Diekman R S & Associates previously held California Contractors State License Board license number 593789, but the license expired on May 31, 2026 and is not currently valid. It was first issued on May 15, 1990.
What does Diekman R S & Associates specialize in?
Diekman R S & Associates is licensed for one CSLB classification: C-27 Landscaping Contractor.
Where is Diekman R S & Associates headquartered?
Diekman R S & Associates is headquartered at 373 Conway Drive, Danville, CA 94526, in Contra Costa County, California.
Does Diekman R S & Associates have an active surety bond on file with CSLB?
Yes. Diekman R S & Associates has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Diekman R S & Associates carry workers' compensation coverage?
Yes. Diekman R S & Associates carries active workers' compensation coverage through Hartford Casualty Insurance Company.
How do I verify Diekman R S & Associates's contractor license?
You can verify Diekman R S & Associates's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=593789.
- License issuedMay 15, 1990
- Bond activeJan 1, 2023
- WC coverage startsFeb 23, 2026
- License expiredMay 31, 2026
- WC expiresFeb 23, 2027
- Howell Landscape Construction INC#604769Walnut Creek·C-27 Landscaping Contractor
- Cottage Landscaping#604645Oakley·C-27 Landscaping Contractor
- B L S Contractors Incorporated#602481Concord·B General Building Contractor
- Olufson Garden Design#606266Lafayette·C-27 Landscaping Contractor
- Expert Tree Service#621402Orinda·A General Engineering Contractor
- Jot Charlot#619042Walnut Creek·C-27 Landscaping Contractor
- Golden Bear Landscape Services#618588Walnut Creek·C-27 Landscaping Contractor
- Cornell Landscaping & Maintenance#626607Concord·C-27 Landscaping Contractor
Working a California job with Diekman R S & Associates, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Diekman R S & Associates? Claim or correct this profile