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Nevada County, California

Licensed Septic Companies in Nevada County, CA

6 septic companies serve Nevada County, California, and 6 of them hold a California septic license or certification matched to the California Contractors State License Board list (data as of October 2026).

Septic services in Nevada County

Guides: Septic system installation · Installation cost · Pumping cost

6 septic companies in Nevada County

Grass Valley 3

  • Black Diamond Builders

    P O Box 3145, Grass Valley, CA 95949

    • Licensed: California Licensed Contractor (B, C42) · #831668 (California Contractors State License Board, verify)

    Per state license: Installation

    (530) 575-7765

  • Navo & Sons Inc

    P O Box 975, Grass Valley, CA 95945

    • Licensed: California Licensed Contractor (C36, C42) · #717036 (California Contractors State License Board, verify)

    Per state license: Installation

    (530) 273-2964

  • Quick Response Septic & Portable Toilet Rentals

    P O Box 3313, Grass Valley, CA 95945

    • Licensed: California Licensed Contractor (C42) · #960628 (California Contractors State License Board, verify)

    Per state license: Installation

    (530) 273-7538

Truckee 2

Penn Valley 1

  • Talon Construction

    19819 Echo Blue Drive, Penn Valley, CA 95946

    • Licensed: California Licensed Contractor (A, B, C12, C42) · #397350 (California Contractors State License Board, verify)

    Per state license: Installation

    (530) 432-3633

Septic licensing in California

California has no license named for septic work; septic systems fall under the C-42 Sanitation System classification. Counties issue system permits. The Contractors State License Board (CSLB) issues these credentials: C-42 Sanitation System contractor license.

Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Nevada County and whether the permit fee is in their quote.

California septic licensing: agencies, license types and how to check a license →

Septic companies in Nevada County: common questions

How many licensed septic companies are in Nevada County, CA?

6 septic companies serve Nevada County, California, and 6 of them hold a California septic license or certification matched to the California Contractors State License Board list (data as of October 2026). Each license badge on this page names the agency and links to its lookup so you can confirm it.

Who licenses septic contractors in California?

California has no license named for septic work; septic systems fall under the C-42 Sanitation System classification. Counties issue system permits. The licensing body is the Contractors State License Board (CSLB).

Which companies install septic systems in Nevada County?

6 listings in Nevada County install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their California license.

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

Use the Contractors State License Board (CSLB)'s lookup (https://www.cslb.ca.gov/onlineservices/checklicenseII/checklicense.aspx) and search the contractor's name or license number. Our guide to checking a septic license walks through it.