# California Service Station Equipment Contractors (CSLB D-40) — partial U.S.: 5 states (CA, CT, MT, NV, OR) location dataset All 139 locations in partial U.S.: 5 states (CA, CT, MT, NV, OR), as one CSV: 24 fields per record, 5 states, file built October 3, 2026. $9 one-time, with up to 10 real rows free before you buy. Canonical URL: https://locationlists.com/data/california-fuel-system-contractor-list Every active California contractor licence in class C-61/D-40, Service Station Equipment and Maintenance: the licence a company needs to install and service fuel dispensers, tanks, piping and forecourt equipment in California. 139 licences, read from the Contractors State License Board's own data portal. 135 have a California address of record and 4 are out-of-state licensees. 84 are corporations, 45 sole owners, 6 LLCs and 4 partnerships. 64 of the licences also hold the HAZ hazardous-substance certification and 55 the A general engineering class, which tank removal and site work usually call for; the classifications column lists them all. Each row carries the licence number, business type, first issue date, expiry date, phone and county. ## The figures - Records: 139 locations - States: 5 - Coverage: partial U.S.: 5 states (CA, CT, MT, NV, OR) - Fields: 24 - Price: $9 one-time, CSV download, commercial license (https://locationlists.com/license) - Snapshot built on October 3, 2026. Not rebuilt on a schedule. - File last modified: 2026-10-03 ## Fields - `name`: Company name as the source lists it - `address`: Street address - `city`: City - `state`: Two-letter state or Canadian province code - `zip`: ZIP or Canadian postal code - `country`: US or CA - `county`: County name (US rows) - `phone`: Phone number - `licenseNumber`: CSLB licence number - `licenseClass`: The licence class the list is built on - `classifications`: Every CSLB classification the licence holds (A = general engineering, HAZ = hazardous substance removal...) - `businessType`: Corporation, Sole Owner, Limited Liability or Partnership, as CSLB records it - `licenseStatus`: Licence status (all rows are active) - `issueDate`: Date the licence was first issued - `expires`: Licence or registration expiry date - `licensingBody`: The state agency that issued the licence or registration - `source`: Where the row comes from, in words (the maker's locator, the state register, or Overture Maps) - `sourceUrl`: The page or register the row was read from - `latitude`: GPS latitude - `longitude`: GPS longitude - `geo_precision`: How the coordinates were arrived at: the source's own point, a geocode of the street address, or the ZIP's centre - `county_fips`: Five-digit county FIPS code (US rows) - `county_note`: Set when the ZIP code spans more than one county - `address_quality`: complete, no_house_number, po_box, missing_city_or_zip or missing ## What we did to this data Added coordinates to 139 listings, added the county to 124 listings, flagged 25 incomplete addresses and measured 139 rows. Rebuilt October 3, 2026 from cslb.ca.gov. ## How complete the key fields are phone 99%, street address 100%, city 100%, state 100%, ZIP code 100%, latitude 100%, longitude 100%. 23 of 24 columns are filled on at least half the rows. ## Ask this list a question with a link No connector and no account; each link answers with the matching count, preview rows and the price for just that part. - [Only California, the state with the most](https://locationlists.com/find?dataset=california-fuel-system-contractor-list&state=CA) - [Within 25 miles of Los Angeles, CA, the busiest area](https://locationlists.com/find?dataset=california-fuel-system-contractor-list&near=Los+Angeles+CA&radius=25) - [Within a 30-minute drive of Los Angeles, CA](https://locationlists.com/find?dataset=california-fuel-system-contractor-list&near=Los+Angeles+CA&drive=30) - [Every General & Building Contractors list combined, within 25 miles of Anaheim, CA](https://locationlists.com/find?category=general-contractors&near=Anaheim+CA&radius=25) - [Each one's nearest Texas Registered UST Contractors (TCEQ), in California, with miles](https://locationlists.com/find?dataset=california-fuel-system-contractor-list&state=CA&relate=nearest&k=1&b.dataset=texas-ust-contractor-list&b.state=CA) - [The whole list: add a city, state, ZIP code or distance](https://locationlists.com/find?dataset=california-fuel-system-contractor-list) ## The same dataset, for machines - Record as JSON: https://locationlists.com/data/california-fuel-system-contractor-list/dataset.json - Free sample, up to 10 real rows: https://locationlists.com/data/california-fuel-system-contractor-list/sample.csv or https://locationlists.com/data/california-fuel-system-contractor-list/sample.json - Buy link (opens Stripe Checkout): https://locationlists.com/data/california-fuel-system-contractor-list/buy ## Questions ### What is a C-61/D-40 licence? It is the California CSLB limited-specialty class for Service Station Equipment and Maintenance contractors: installing, servicing and repairing fuel dispensers, tanks, piping and related equipment at fuelling sites. Every row holds an active D-40 licence. ### Are the licences active? Yes. Only licences CSLB shows as CLEAR (active, no suspension) are in the file; on 3 October 2026 that was all 139 holders of the class. ### Can I see which companies also do general engineering or hazardous work? Yes. The classifications column lists every class the licence holds: 55 also hold A (general engineering) and 64 the HAZ hazardous-substance removal certification. ### Is this list in the Fuel-System Contractor Bundle? Yes. The bundle puts this list together with the Gilbarco, Veeder-Root and Dover Fueling Solutions networks, the California and Texas tank contractor registers and the independents in one CSV, with a column naming each row's source, for less than buying the lists one by one. ### How current is it? Snapshot built on October 3, 2026. It is a one-time snapshot and is not rebuilt on a schedule. ### How is this data cleaned? Every rebuild runs the same steps and counts what each one changed. For the current file, rebuilt October 3, 2026 from cslb.ca.gov: Merged 0 duplicate listings that had the same business name, street address and ZIP code, keeping every filled-in detail from both (October 3, 2026). Unified 0 city names written more than one way within the same ZIP code (for example with and without a space or an abbreviation) to the US Census Bureau spelling (October 3, 2026). Corrected 0 misspelled city names to the US Census Bureau place name for their ZIP code (October 3, 2026). Added map coordinates to 139 listings that had none, from the US Census Bureau address geocoder or, where the street address could not be matched, the centre of the ZIP code (October 3, 2026). Set the county and its federal county code on 124 listings, matched to the US Census Bureau county list from the county the source records, the listing's map point, or its ZIP code area (October 3, 2026). Checked every map point against the state in its address and re-placed 0 points that fell outside that state (October 3, 2026). Flagged 25 addresses that are incomplete, a PO box, or missing a house number, in an address quality column (October 3, 2026). Checked that the row count, state count and field completeness published for this file were measured from the file itself (October 3, 2026). ### Isn't this free on cslb.ca.gov? The underlying records are public on cslb.ca.gov. What you pay for is the work between that public release and this file: added coordinates to 139 listings, added the county to 124 listings, flagged 25 incomplete addresses and measured 139 rows. The current file was rebuilt October 3, 2026 from cslb.ca.gov. Doing it yourself means downloading the full release, repeating each of those steps, and repeating them again every time the source updates. ### How complete is each field? Measured on every row of the current file, the share of rows that carry each key field: phone 99%, street address 100%, city 100%, state 100%, ZIP code 100%, latitude 100%, longitude 100%. 23 of 24 columns are filled on at least half the rows.