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Best Licensed Well Drilling Contractors in Oakhurst, CA

3 well drilling companies registered in Oakhurst hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 3 companies registered in Oakhurst. 3 passed license verification. All 3 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.Biological Technology Inc.

    ✓ CSLB License #477941 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1985
    Phone
    (559) 642-0490

  2. 2.Walt Bannon Drilling Inc.

    ✓ CSLB License #606385 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1990
    Phone
    (559) 683-5670

  3. 3.H & B Drilling Inc.

    ✓ CSLB License #660918 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1992
    Phone
    (559) 683-4086

Compare the top 3 at a glance

CompanyLicenseWorkers' compLicensed since
Biological Technology Inc.#477941On file1985
Walt Bannon Drilling Inc.#606385On file1990
H & B Drilling Inc.#660918On file1992

Madera County well drilling licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 26 active C-57 well drilling licenses in Madera County, 3 of them registered in Oakhurst. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Oakhurst license has been held 35 years, and the longest-standing one dates to 1985. 3 of Oakhurst's 3 licenses (100.0%) 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: 26 of the county's 26 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.

Well Drilling Contractors in Oakhurst: common questions

How many licensed well drilling contractors are there in Oakhurst?

3 active C-57 well drilling licenses are registered in Oakhurst, out of 26 across Madera County. 3 Oakhurst-registered companies passed our license verification, and all 3 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license well drilling contractors?

Yes. California licenses contractors by classification, and C-57 is the CSLB classification that authorises this work. 3 active C-57 well drilling licenses are registered in Oakhurst and 26 across Madera County, the longest-standing issued in 1985. Only CLEAR, unexpired licenses appear here.

How do I check a well drilling 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 Oakhurst's 3 currently carry. 3 Madera County licenses expire within 90 days.

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