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Mollenhauer Plumbing & Piping

License #1000538·Sole Owner·Alpine, San Diego County
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Summary

Mollenhauer Plumbing & Piping operating as a sole owner is licensed in California under CSLB number 1000538. The license was first issued in 2015, putting the business at 11 years on the active CSLB roster. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Alpine, in San Diego County, California.

Business Information
Address
2111 Alpine Glen Place
Alpine, CA 91901
License Details & Classifications
License Number
1000538
Issued
Jan 26, 2015
Status
CLEAR
Expires
Jan 31, 2027
Entity
Sole Owner
Financial & Insurance Coverage
Contractor Bond
Surety
Atlantic Specialty Insurance Company
Bond Number
800210770
Effective
Jan 8, 2026
Status
Active
Workers' Compensation
Coverage
Exempt
Carrier
—
Policy Number
—
Effective
Feb 12, 2025
Expires
—
Review

This contractor warrants a closer look before contracting:

  • Workers' comp listed as exempt
License StatusActive
Contractor BondOn file
Workers' CompensationActive

An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this

Frequently asked questions
Is Mollenhauer Plumbing & Piping licensed in California?

Yes. Mollenhauer Plumbing & Piping holds California Contractors State License Board license number 1000538. The license was first issued on January 26, 2015. It is valid through January 31, 2027.

What does Mollenhauer Plumbing & Piping specialize in?

Mollenhauer Plumbing & Piping is licensed for one CSLB classification: C-36 Plumbing Contractor.

Where is Mollenhauer Plumbing & Piping headquartered?

Mollenhauer Plumbing & Piping is headquartered at 2111 Alpine Glen Place, Alpine, CA 91901, in San Diego County, California.

Does Mollenhauer Plumbing & Piping have an active surety bond on file with CSLB?

Yes. Mollenhauer Plumbing & Piping has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.

Does Mollenhauer Plumbing & Piping carry workers' compensation coverage?

Mollenhauer Plumbing & Piping reports an exempt workers' compensation status, meaning the business has no employees on payroll.

How do I verify Mollenhauer Plumbing & Piping's contractor license?

You can verify Mollenhauer Plumbing & Piping's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1000538.

Activity Timeline
  1. License issuedJan 26, 2015
  2. WC coverage startsFeb 12, 2025
  3. Bond activeJan 8, 2026
  4. License expiresJan 31, 2027
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