Salt Lake City

Building Services

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Accessory Dwelling Unit Approved Standard Plans

This page is regularly updated. Check back frequently to see what’s new!

An Accessory Dwelling Unit (ADU) is a secondary suite that is a self-contained apartment, cottage, or small residential unit, located on a property with a separate main, single-family home, duplex, or another residential unit.

The Salt Lake City Planning Division’s ADU Handbook offers a very comprehensive guide to begin the ADU planning process. This handbook provides general guidelines for property owners who want to add an ADU to a lot that already has an existing single-family home.

Questions about the ADU Handbook and other zoning questions should be directed to Salt Lake City Planning @ or call 801-535-7700.

Pre-Approved Standard Plans

The plans listed below have been pre-approved by our Building Code Staff. A site review is required in order to obtain a building permit. If you are interested in using any of the plans listed here, please contact the firm that has provided the plans by clicking on the link to the right of the floor plan.

1 bedroom unit w/ garage

LMnt Architecture


These plans are provided as a courtesy by Salt Lake City Corporation for application and permitting purposes only. These plans were not designed by Salt Lake City Corporation and Salt Lake City Corporation bears no responsibility for the plans or resulting structure. The plans have been reviewed for minimum compliance with applicable building codes. By utilizing pre-approved plans made available through this website, the user agrees to release, indemnify, and hold harmless Salt Lake City Corporation from any and all claims, liabilities, suits, and demands on account of any dispute, injury, damage, or loss to persons or property, including injury or death, or economic losses, arising out of the use of these construction documents. The use of these plans does not eliminate or reduce the user’s responsibility to verify any and all information. These approved plans and any resulting permit issued shall not be construed as a waiver of any building codes, land use regulations, or any other applicable laws, ordinances, or regulations, including but not limited to the Governmental Immunity Act of Utah, and using any of these plans does not vest any development rights in any property. The approval of these plans and issuance of a permit based on construction documents and other data shall not prevent the Salt Lake City Building Official from requiring the correction of errors in the construction documents and data. All applicable review and permitting fees shall still apply and use of these plans does not exempt applicants from any and all required fees or cost in the permitting process and further documentation requirements. The plans are the intellectual property of their respective owners and should not be used without their permission. Salt Lake City Corporation does not endorse any specific ADU design or any plan’s author nor does Salt Lake City Corporation endorse or promote any specific contractor.