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The City of Portland, Oregon

Development Services

From Concept to Construction

Phone: 503-823-7300


1900 SW 4th Ave, Portland, OR 97201

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Lot Confirmations

House constructed on a confirmed lotA lot confirmation verifies one or more lots or lots of record have legal status as a property that is eligible for development under the zoning code. A lot confirmation is often undertaken to confirm lots or lots of record that have previously been combined for tax purposes. A lot confirmation does not verify accessibility to services such as water or sewer; it only confirms that the property meets zoning code standards to be eligible for development. 

Applying for a Lot Confirmation

  • Fill out and submit an Application/Request for Lot Confirmation
  • Include a site plan, drawn to scale, showing all existing development, parking and distances from structures to property lines
  • A survey is typically required when it appears that the location of 1-2 family residential development is within three-feet of the property line to be confirmed or for commercial development dependent on the type of development and available information. The survey must be stamped and signed by a registered licensed surveyor.
  • Submit the required review fee found on the current Land Use Services Fee Schedule

Process: Lot confirmation is an administrative review that generally takes between six and eight weeks to complete. Planning and Zoning Staff can verify the approximate turnaround time when you submit your application in the Development Services Center.

Lot confirmation may be combined with a Property Line Adjustment to recognize a common property line and then move it.

Approval: A lot confirmation must meet the following:

  • The site must include one or more complete, previously platted lots. (usually indicated by a subdivision name, lot and block number), or lots of records (see definition of lot of record in Chapter 33.910)
  • Each lot or lot of record must be able to meet the lot size standards for the applicable base zone, as follows:
    • Lots in the single-dwelling zones (RF, R20, R10, R7, R5, R2.5) must meet the applicable standards of Chapter 33.110, Section 33.110.212, When Primary Structures are Allowed
    • Lots in the multi-dwelling zones (R3, R2, R1, RH, RX, IR) must meet Chapter 33.120, Chapter 33.120.210, Development on Lots and Lots of Record.  
    • Additional allowances for Platted Lots under Senate Bill 534.

Questions? For further assistance with the land use and zoning regulations that apply to your site, please call us at (503) 823-7526, or visit Planning and Zoning Staff in the Development Services Center.