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Pre-permitted ADU Plan Library
& Resource Center
What is an ADU?
ADU - or an accessory Dwelling Unit; is a phrase used in zoning codes to differentiate between a primary dwelling and a subsequent living quarter that includes a bathroom and kitchen. We like the term Accessory Building.
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Uses:
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office or studio,
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library, study, home gym, game room, home-theater, meditation room,
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extra bedroom for a growing family,
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apartment for an aging parent or teen,
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rental apartment to a friend or a relative,
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short-term or long-term rental uniT
Our smallest model also meets the IRC definition of a tiny home.*
An Accessory Building such as this offers an abundance of opportunities, flexibility, and options that can evolve and expand over time. Building an Accessory Building is an investment in the future.
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Does my property allow an ADU?
To determine which jurisdiction your property is located in
If you are in the City of Tucson:
Follow the steps presented in this document - COT Casita Worksheet
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Property Research Online links you to Tucson zoning description
If you are in Pima County:
Find information about guest houses in Pima County
To find details about your zoning from Property Research Online
follow these steps:
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Search for your address
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Click the word “assessor” on the right side of the screen after Pima County Data
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Scroll down to the first table and click on the word “Zoning”
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You will be taken to a table that provides the zoning designation for your jurisdiction, click on it to read more information about your zoning
How do I get your plans approved on my property?
Urban Infill Project can provide a simple site plan template we recommend using in any of the following options (our permit offices will recognize them).
Option 1: Hire an outside practitioner to complete a site plan and zoning review on your behalf. They will charge you an additional fee to complete this work and they should clarify their schedule with you directly. Click HERE
Option 2: Homeowners may draw site plans on their own - many have had success doing this. There are online resources available to help:
Choose your floor plan!
To purchase your pre-permitted Construction Documents please visit our SHOP page.​
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See FAQ's on our Resource Center to understand what changes to the plans are allowed.