Homversa

Best Licensed Well Drilling Contractors in San Luis Obispo, CA

Homversa lists 3 well drilling companies registered in San Luis Obispo holding current CSLB licenses, matched against the CSLB licensee file as of . All 3 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 3 well drilling companies registered in San Luis Obispo. Every one of them holds a current license, checked against the official register. 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.Earth Systems Pacific

    ✓ CSLB License #775664 - look up this number at CSLB (opens in a new window)

    On the CSLB register since 2000, with workers' compensation cover on file and bonded at $25,000.

    Verified
    Registered in
    San Luis Obispo, CA 93401
    Licensed since
    Phone
    (805) 544-3276

  2. 2.Geosolutions Inc.

    ✓ CSLB License #829272 - look up this number at CSLB (opens in a new window)

    On the CSLB register since 2003, with workers' compensation cover on file and bonded at $25,000.

    Verified
    Registered in
    San Luis Obispo, CA 93401
    Licensed since
    Phone
    (805) 543-8539

  3. 3.Robert Hather Well Drilling

    ✓ CSLB License #1006603 - look up this number at CSLB (opens in a new window)

    On the CSLB register since 2015, with bonded at $25,000.

    Verified
    Registered in
    San Luis Obispo, CA 93401
    Licensed since
    Phone
    (805) 459-1841

Compare the top 3 at a glance

Swipe the table sideways for all columns - the company name stays put.

Compare the top 3 Licensed Well Drilling Contractors in San Luis Obispo, CA
Well Drilling ContractorLicenseWorkers' compLicensed since
Earth Systems Pacific#775664On file2000
Geosolutions Inc.#829272On file2003
Robert Hather Well Drilling#1006603Exempt or none on file2015

How this page is built

Nobody pays to appear on this page, and position cannot be bought. A company is listed only where the official register showed it holding a current license when we checked on September 4, 2026.

  • Ranked by workers' compensation cover and years licensed.
  • Left off anything expired on the date we checked, or carrying any status other than current.
  • Not published at all until at least 3 well drilling companies pass that check. At most 10 appear - a cut through the ranking, not a further test.

The full method, including what each register does and does not publish.

San Luis Obispo 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: 24 active C-57 well drilling licenses in San Luis Obispo County, 3 of them registered in San Luis Obispo. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Luis Obispo license has been held 22 years, and the longest-standing one dates to 2000. 2 of San Luis Obispo's 3 licenses (66.7%) 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: 24 of the county's 24 licenses carry the same $25,000 bond California sets by statute. 2 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 San Luis Obispo: common questions

How many licensed well drilling contractors are there in San Luis Obispo?

3 active C-57 well drilling licenses are registered in San Luis Obispo, out of 24 across San Luis Obispo County. 3 San Luis Obispo-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 San Luis Obispo and 24 across San Luis Obispo County, the longest-standing issued in 2000. 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 2 of San Luis Obispo's 3 currently carry. 2 San Luis Obispo County licenses expire within 90 days.

Why is a company not on this list?

A company appears only when we can match it to a current record in the register this page is verified against - 3 companies passed that match for San Luis Obispo. A credential that is expired or suspended, or a business we cannot conclusively match to a current record, never appears. A listed business that believes its information is wrong can reach us through the contact and corrections page at homversa.com/contact. How current each date is, and what happens when a credential lapses, are explained on our methodology page.

Which nearby cities have verified well drilling contractors?

Templeton (4 verified), Paso Robles (7 verified), Santa Maria (5 verified), Orcutt (3 verified) and Lemoore (3 verified) each publish their own list, verified separately against the state register, so the counts differ city by city. The links are in the nearby-cities section below.

Other services in San Luis Obispo

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Deepest nearby market: Bakersfield ranks 10 well drilling companies for this trade within the same area.

All well drilling contractors in California

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