Costello Timothy James, A General Engineering Contractor in Palmdale, CA
Costello Timothy James operating as a sole owner holds an active California contractor license (CSLB #937372), valid through Sep 30, 2027. First issued in 2009, the license has been on the CSLB roster for 17 years. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in Palmdale, in Los Angeles County, California.
- License Number
- 937372
- Issued
- Sep 2, 2009
- Status
- CLEAR
- Expires
- Sep 30, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100365814
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Aug 7, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Costello Timothy James licensed in California?
Yes. Costello Timothy James holds California Contractors State License Board license number 937372, which is active and in good standing. The license was first issued on September 2, 2009. It is valid through September 30, 2027.
What does Costello Timothy James specialize in?
Costello Timothy James is licensed for one CSLB classification: A General Engineering Contractor.
Where is Costello Timothy James headquartered?
Costello Timothy James is headquartered at 3757 E Avenue T8, Palmdale, CA 93550, in Los Angeles County, California.
Does Costello Timothy James have an active surety bond on file with CSLB?
Yes. Costello Timothy James has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Costello Timothy James carry workers' compensation coverage?
Costello Timothy James reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Costello Timothy James's contractor license?
You can verify Costello Timothy James's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=937372.
- License issuedSep 2, 2009
- Bond activeJan 1, 2023
- WC coverage startsAug 7, 2025
- License expiresSep 30, 2027
- Dempsey F W Const CO#284892Long Beach·A General Engineering Contractor
- T Viole Construction CO INC#283354Tarzana·A General Engineering Contractor
- Signal Hill Construction#289892Long Beach·A General Engineering Contractor
- American Landscape INC#288229Canoga Park·A General Engineering Contractor
- Continental Construction Corporation#291949El Segundo·A General Engineering Contractor
- E & M Constructors INC#265371San Fernando·A General Engineering Contractor
- Metco Equipment INC#265415Long Beach·A General Engineering Contractor
- Sunrise Landscape CO INC#266132Santa Fe Springs·A General Engineering Contractor
Working a California job with Costello Timothy James, 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 Costello Timothy James? Claim or correct this profile