Map Number Request

What is the process?

Apply for a Map Number

Please apply for a map number through the online service PermitSLO.

  1. Access PermitSLO
  2. Find the map number application that you need. It will be one of the following:

    • Certificate of Compliance Number
    • Lot Line Adjustment Map Number
    • Parcel Map Number
    • Public Lot Number
    • Tract Map Number
    • Voluntary Merger Number
  3. Click the 'Apply' button next to the correct number 

  4. Follow the online instructions.

Wait Until You See The Official Map Number

Wait a few minutes, and then refresh* your browser to see your official map number. MAP-000139-2022 is not your official map number. Your map number should be formatted as follows: 

TR [last two digits of the year]-XXXX (e.g. TR 22-0010).

  • NOTE: *To refresh your browser, right-click anywhere on the screen and click, .

Who can use this service?

Anyone can use this service.

Is there a charge for this service?

This service does not cost anything.

When and where is this service offered?

This service is available throughout the year during regular business hours except during scheduled holidays.

PermitSLO Portal

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