Homversa
Find. Call. Fixed. - every listing checked against the official license or credential registry for its trade.

Best Licensed Septic Contractors in Martinez, CA

4 septic companies registered in Martinez hold current CSLB licenses, verified against official records as of August 17, 2026. All 4 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 4 companies registered in Martinez. 4 passed license verification. All 4 are listed below. Our methodology

We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.

  1. 1.Marelich Mechanical Co Inc.

    ✓ CSLB License #752638 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1998
    Phone
    (510) 785-5500

  2. 2.Advanced Trenchless Inc.

    ✓ CSLB License #971074 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2012
    Phone
    (925) 932-4023

  3. 3.American Pipe Bursting LLC

    ✓ CSLB License #1039462 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2018
    Phone
    (925) 586-7970

  4. 4.Ernie's Plumbing & Sewer Service

    ✓ CSLB License #802333 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2001
    Phone
    (925) 228-5242

Compare the top 4 at a glance

CompanyLicenseWorkers' compLicensed since
Marelich Mechanical Co Inc.#752638On file1998
Advanced Trenchless Inc.#971074On file2012
American Pipe Bursting LLC#1039462On file2018
Ernie's Plumbing & Sewer Service#802333Expired on file2001

Contra Costa County septic licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 44 active C-42 sanitation system licenses in Contra Costa County, 4 of them registered in Martinez. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Martinez license has been held 14 years, and the longest-standing one dates to 1998. 3 of Martinez's 4 licenses (75.0%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 44 of the county's 44 licenses carry the same $25,000 bond California sets by statute. 3 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.

Septic Contractors in Martinez: common questions

How many licensed septic contractors are there in Martinez?

4 active C-42 sanitation system licenses are registered in Martinez, out of 44 across Contra Costa County. 4 Martinez-registered companies passed our license verification, and all 4 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license septic contractors?

Yes. California licenses contractors by classification, and C-42 is the CSLB classification that authorises this work. 4 active C-42 sanitation system licenses are registered in Martinez and 44 across Contra Costa County, the longest-standing issued in 1998. Only CLEAR, unexpired licenses appear here.

How do I check a septic contractor's license in California?

Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 3 of Martinez's 4 currently carry. 3 Contra Costa County licenses expire within 90 days.

Other services in Martinez

Septic Contractors in nearby cities