Permit Review Detail
Review Status: Requires Resubmit
Review Details: RESIDENTIAL ADU v.1
Permit Number - TC-RES-0726-03683
Review Name: RESIDENTIAL ADU v.1
Review Status: Requires Resubmit
| Review Date | Reviewer's Name | Type of Review | Description | Status | Comments |
|---|---|---|---|---|---|
| 07/13/2026 | Residential Building | APPROVED | |||
| 07/20/2026 | Bldg Permits - Post Review Express | PENDING ASSIGNMENT | |||
| 07/10/2026 | Residential Engineering | REQUIRES RESUBMIT | Permit Activity Number: TC-RES-0726-03683 (1st Review) Project: Proposed Studio/Sleeping Quarters Location: 2524 N WALNUT AV Unit: UNIT 2 Review Date: 7/10/2026 Reviewer: Marco Contreras – Engineering Associate - Site Engineering Reviewer Contact: Marco.contreras@tucsonaz.gov Related cases: Plan review for the above referenced structure has been completed. This letter reflects comments to be addressed to ensure final approval from Site Engineering. To help speed up your resubmittal and facilitate shorter review timelines, please include a response letter along with your updated plans and any supporting calculations. In your response letter, address each comment individually and explain what changes were made and where they can be found in the plans. Please do not mark or highlight changes in the drawings at this stage — revision markups are only used after a permit has been issued. Submit your response letter and updated plan set as two separate files. Site Engineering Review Comments: 1. The City of Tucson Inclusive Home Design Ordinance requires all new dwellings — including ADUs, single-family residences, and duplexes — to provide an accessible route connecting the public street, sidewalk, or driveway to an accessible entrance of the home. This pathway must be shown, dimensioned, and labeled on the plans. What this means in plain terms: There needs to be a clearly defined, walkable path from where a person arrives (the street, sidewalk, or driveway) all the way to a usable door of the home — one that someone using a wheelchair or mobility aid could navigate without barriers. An exterior accessible route that shall conform to 2017 ICC A117.1 Sections 402 and 403 and City of Tucson Inclusive Home Design Ordinance. The current plans to no reference a material nor show a connection to ROW sidewalk or Parking area proposed. Ensure dimension the path at the minimum 4-feet required. Reference: https://www.tucsonaz.gov/files/sharedassets/public/v/1/city-services/planning-development-services/documents/inclusivehomedesignordinance.pdf Action Items — Show the following on your plans: • Draw and label the path as "Accessible Route" • Provide a minimum clear width of 4 feet with a width call-out on the plans • Note the proposed running slope (must not exceed 5% / 1:20) and cross slope (must not exceed 2% / 1:50) • Identify the accessible entrance the route leads to Acceptable Accessible Route compositions include: • Portland cement concrete (PCC) • Broom Finished concrete • Brick or unit pavers (Only if set on a stable cement base with no gaps exceeding ½”) • Concrete pavers on concrete base (Same joint and evenness requirements as brick) • Flagstone: must be mortared – loose set does not qualify • Any surfaces equivalent in smoothness, hardness, and durability NOTICE: Decomposed granite (DG) is not permitted for required accessible routes, even if compacted |
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| 07/20/2026 | Residential Zoning | REQUIRES RESUBMIT | PDSD TRANSMITTAL FROM: Erick Bieber Planning & Development Services Department – Zoning Review Section PROJECT: TC-RES-0726-03683 2524 N Walnut Av Unit 2, Tucson, AZ 85712 Residential ADU - Casitas (1st Review) TRANSMITTAL DATE: July 20th, 2026 This site is located in the R-2 zone (UDC 4.7.9). An accessory dwelling unit is a permitted use in this zone subject to use-specific standards 4.9.7.B.6, .8, .12 and 6.6.3. RESUBMITTAL OF THE FOLLOWING IS REQUIRED: Correct plans, as noted in the comments below, along with a response letter indicating how all Site Zoning comments were addressed. 1. (Comment) The proposed accessory structure does not have an associated principal building on its lot (110-07-1660). Per UDC 6.6.2.B, an accessory building shall be built only on a lot occupied by a principal building or use. Consider pursuing a lot combination through the Pima County Assessors Office to continue with proposing an accessory structure. See the following form for more information: https://www.asr.pima.gov/Downloads/Forms/ComboRequest.pdf 2. (Comment) If a lot combination is pursued, please clarify whether the proposed studio unit is an Accessory Dwelling Unit (ADU) or a sleeping quarters and adjust the plans to reflect the correct label. ADUs are characterized by featuring a full kitchen (full sized fridge and cooking range) and incur impact fees. If the structure has a full kitchen, feature it on the floor plan. Sleeping quarters are habitable accessory structures that do not have a full kitchen but are allowed a half-sized fridge and sink. If the structure is a sleeping quarters, a Residential Addition/Alteration permit would be required rather than a Residential ADU permit. See the following handout for more information regarding different housing types: https://www.tucsonaz.gov/files/sharedassets/public/v/1/pdsd/documents/middle-housing/design-competition/housing-types-guide-2026.pdf 3. (Comment) The property line dimensions appear to be incorrect. Correct the lot dimensions then confirm whether the existing residence still encroaches on the northern lot. Lot dimensions can be found on the subdivision plat map found here: https://onbase.pima.gov/publicaccess/DS_NextGen_Single/etc/cq/results.html?cqid=240&OBKey__552_1=04036 4. (Comment) The minimum perimeter yard setback in the R-2 zone is 5’ while the site plan shows a 6’ setback. 5. (Comment) More comments may be forthcoming on the next review with the clarification on whether the accessory structure is an ADU or a sleeping quarters. The Unified Development Code (UDC) can be found at: https://www.tucsonaz.gov/Departments/Planning-Development-Services/Codes/Zoning-Code For questions regarding Zoning comments, please contact me at: Erick.Bieber@tucsonaz.gov |
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| 07/10/2026 | PDSD Application Completeness Express | REVIEW COMPLETED |