Permit Review Detail
Review Status: Requires Resubmit
Review Details: RESIDENTIAL ADU v.1
Permit Number - TC-RES-1026-05789
Review Name: RESIDENTIAL ADU v.1
Review Status: Requires Resubmit
| Review Date | Reviewer's Name | Type of Review | Description | Status | Comments |
|---|---|---|---|---|---|
| 10/21/2026 | Residential Engineering | APPROVED | |||
| 10/26/2026 | Bldg Permits - Post Review Express | PENDING ASSIGNMENT | |||
| 10/20/2026 | Residential Building | REQUIRES RESUBMIT | TC-RES-1026-05789 PLAN REVIEW COMMENTS Plan review for the above referenced structure has been completed. This letter reflects comments to be addressed. For facilitating a shorter back check time, please provide updated plans and calculations with a written response to each of the notated items indicating action taken. Do not cloud the changes made for comment updates; revisions are processed if changes occur after the permit is issued. SCOPE OF REVIEW: The scope of this plan review covers architectural, plumbing, mechanical, energy conservation and electrical. All code references are to the 2024 International Residential Code. All features were checked only to the extent allowed by the submittals provided. All portions of this project are assumed to meet or will meet other departmental requirements, conditions, and concerns before permit approval. GENERAL REQUIREMENTS: The City of Tucson adopted the 2024 IRC with amendments and building ordinances for all dwellings. Place the reference code on sheet #1 and avoid placing code reference entries throughout the plans which become outdated. Combine the plan sheets into a single construction plan set file. Provide a separate response letter addressing each comment with location of change on the plans. SITE PLAN: 1. Show the utility meters and lines from the utility source to the new dwelling, R106.1.1. Identify the proposed water supply line with exterior wall entrance to the ADU. 2. Each dwelling unit (with kitchen) requires a separate Pima County assigned street address, R308. Obtain a new address at: https://www.pima.gov/addressing Notate each dwelling address on the site plan. 3. Each dwelling unit requires fire separation for reducing fire spread between units. Show a one-hour fire-resistive separating wall in compliance with IBC Table 721.1(2). PLANS: 1. Remove all outdated code references, R106.1.1. Incorrect entries were found on sheets 2 & 3. 2. Identify the location of each (1-16) General Keynote on sheet #2. SECTIONS - DETAILS: 1. Clarify the placement of ceiling/roof insulation for determining the need for attic ventilation, R806. Attic space outside of the thermal barrier requires a ventilation calculation for showing the attic vent opening size using 1 to 150 of attic area in compliance with R806.2 or an unvented roof assembly requires an air-impermeable rigid insulation material with a minimum R-5 value applied correctly to either side of the roof sheathing, R806.5. Show a roof design with insulation types and minimum thickness for meeting the condensation control requirement and the minimum total insulation value of R-38. MECHANICAL PLANS: 1. Identify the device model number providing an adjustable setting and note the minimum continuous setting for providing whole-house mechanical ventilation, R303.4; N1103.6 & M1505.4. PLUMBING PLANS: 1. Show an individual accessible water supply shut off and water heater for the proposed dwelling unit, P2903.9.1. 2. Show the ADU water heater rating/capacity for consistence with the electrical circuit size, R106.1.1. ELECTRICAL PLANS: 1. Show a surge-protective device (SPD) as an integral part of or placed immediately adjacent to the service equipment, E3606.5. 2. Remove the receptacle from the exterior face of the peninsular cabinet where below the countertop, E3901.4.2. 3. Provide GFCI protection for appliance receptacle outlets, E3902.12 & 14. Include the Dishwasher, Electric range, Clothes dryer, Microwave oven and HVAC equipment. 4. Specify high-efficacy luminaires with an efficacy not less than 45 lumens per watt or lamps with efficacy not less than 65 lumens per watt (LED devices), IECC R404.1. Remove the percentage limits from the two high-efficacy notes. OUTDOOR LIGHTING CODE 1. Show full cutoff fixtures were located within 25 feet from the property line OLC 401.3.3. Show lamps with a maximum of 3500K color temperature, OLC 402.1. If you have any questions, please contact: Kenneth.VanKarsen@tucsonaz.gov City of Tucson Residential Building Safety |
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| 10/26/2026 | Residential Zoning | REQUIRES RESUBMIT | PDSD TRANSMITTAL FROM: Erick Bieber Planning & Development Services Department – Zoning Review Section PROJECT: TC-RES-1026-05789 – Residential Building 2536 W Ruthann Dr, Tucson, AZ 85713 Residential ADU – Casitas (1st Review) TRANSMITTAL DATE: October 26th, 2026 This site is located in the R-1 zone (UDC 4.7.9). An accessory dwelling unit is a permitted use in this zone (Table 4.8-2) 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) Aerial imagery indicates that a porch was added to the rear of the home ~2021 and later enclosed ~2024. Zoning can not locate permits for the additions. Zoning can not approve this permit until a permit is submitted for the additions. 2. (Comment) Per the subdivision plat map, there is a 10’ utility easement along the northern property line. Please indicate the easement on the site plan. 3. (Comment) Per UDC 7.6.8, all new residential developments consisting of 1-4 units require basic native, drought resistant landscaping to be added to the site plan. a. Per UDC 7.6.8.A.1, one canopy tree is required for every 1,000sqft of GFA of the development project. This project will require 1 canopy tree. b. Per UDC 7.6.8.A.2, Vegetative groundcover is required in the front yard per the following equation: (X Linear feet of Street Frontage) - (Y Curb cut width) x (5 Foot Depth) = Z Square Feet of vegetative groundcover This area must be dimensioned on the site plan. c. Provide plant species for both the vegetative groundcover and canopy trees to ensure that they are ADWR Low Water Use approved plant species. See the link below to learn more about approved plant species. d. Existing landscaping may be used to meet landscaping standards but must be indicated and labeled on the site plan. To learn more about the new residential landscaping code, please visit the following link: https://middle-housing-cotgis.hub.arcgis.com/pages/Residential-Landscaping-Code 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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| 10/20/2026 | PDSD Application Completeness Express | REVIEW COMPLETED |