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COVID-19 Updates: Get the latest public information related to coronavirus disease 2019 (COVID-19) at

Due to significant public health concerns from the COVID-19 coronavirus and the need to meet social distancing requirements, the Department of Agriculture/Weights and Measures' offices are currently operating under modified schedules. 

All three of our offices are staffed and have partially re-opened to serve our customers. However, customers are strongly encouraged to call ahead and make appointments for any necessary services. 

Please see the July 2020 Department of Agriculture / Weights and Measures Update for more information on current office hours, or contact us at the Department's main phone line or email.

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Device Inspection/Registration Services

Who can use this service?

Any owner or user of a weighing or measuring device that is being used or is going to be used commercially in San Luis Obispo County.

Is there a charge for this service?

The inspection of a commercial weighing or measuring devices does not have a cost.
Registration fee depends on device type and number of devices at location.

Refer to the County of San Luis Obispo Department of Agriculture/Weights and Measures Fee Schedule.

When and where is this service offered?

San Luis Obispo office:
    Monday - Friday from 8 a.m. to 5 p.m. for drop off
    Scheduling with an Inspector is best for prompt service
The San Luis Obispo office has the ability to inspect:

  • Hanging scales below 100lb
  • All scales below 500lb
  • Water Submeters
  • Electric Submeters
  • Vapor Submeters

Templeton office:
    Monday - Friday from 8 a.m. to 4 p.m. for drop off
    Scheduling with an inspector is best for prompt service
The Templeton office has the ability to test

  • Hanging scales below 100lb
  • Platform scales below 500lb

Field inspections may be done by appointment.

Location, directions and hours of operation

Click on location name to show hours of operation, directions and phone information

Templeton Office

Monday - Friday 8-4

350 North Main Street Templeton, CA 93465

Tel: (805) 434-5950

Fax: (805) 434-5953

San Luis Obispo Office

Monday - Friday 8-5

2156 Sierra Way San Luis Obispo , CA 93401

Tel: (805) 781-5910

Fax: (805) 781-1035

Frequently Asked Questions

How do I get a registration certificate for my commercial devices?
How do I get my device inspected?
How do I pay my registration?

Payment is accepted by cash or check to the Department of Agriculture/Weighs and Measures San Luis Obispo Office.

How long does the inspection take?

Inspections vary depending on the type of device. Inspectors will do their best to not interrupt business activities. For seasonal devices, appointments may be accommodated.

How long is my registration good for?

Device Registration is valid from June to May.

How much will my registration cost?

Registration fees are dependent on the annual County Fee Schedule.

How often does my device need to be inspected?

All submeter devices, water, electric, and gas, are inspected within a 10 year cycle. All other devices are inspected annually.

Who can I contact for registration of my devices?
Why have the Inspectors not inspected my device I have paid my fee?

The registration fee is completely separate from the device inspection. The Commercial device registration fee is mandated by the County of San Luis Obispo. The device inspection is to ensure compliance of the device and its use with state law and regulation.

Will the inspector come to my place of business?

All water, electric and gas meters are required to be brought to the Department of Agriculture/Weights and Measures office in San Luis Obispo. All Farmers market scale are required to be brought to the San Luis Obispo or the Templeton office for annual inspection. Small scales 500lb and below can be brought to the San Luis Obispo or the Templeton office. All other devices will be inspected in their "as used position" at the place of business.