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Permit Number: TC-RES-0825-04004
Parcel: 126211160

Review Status: Requires Resubmit

Review Details: RESIDENTIAL ADU v.1

Permit Number - TC-RES-0825-04004
Review Name: RESIDENTIAL ADU v.1
Review Status: Requires Resubmit
Review Date Reviewer's Name Type of Review Description Status Comments
08/14/2025 Site Engineering - Standard NOT REQUIRED
09/17/2025 Bldg Permits - Post Review Express PENDING ASSIGNMENT
09/08/2025 Residential Building - Standard REQUIRES RESUBMIT TC-RES-0825-04004
PLAN REVIEW COMMENTS

Plan review for the above referenced structure has been completed. This letter reflects comments to be addressed. Provide a separate Comment Response Letter when submitting updated plans. Facilitate 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 revisions.

SCOPE OF REVIEW:

The scope of this plan review covers architectural, plumbing, mechanical, energy conservation and electrical. All code references are to the 2018 International Residential Code and 2018 International Energy Conservation 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.

PROVIDE A COMPLETE PLAN SET showing all proposed alterations to the building with 2018 IRC code compliance. The plans require sufficient detail for demonstrating minimum building code compliance for passing all progress inspections.

Provide a response letter addressing each comment with location of change on the plans. Submit separate letter and plan set files.

PLANS:

1. Provide the insulation requirements on sheet A1.1 as referenced on sheet A-5, R106.1.1.
2. Show compliance with the Pool Barrier requirements by including a UL2017 pool alarm system for doors and windows opening to the pool area, 2018 ISPSC 305.4.1.

MECHANICAL PLANS:

1. Provide whole-house mechanical ventilation with controlled exhaust, R303.4; N1103.6 & M1505.4. Identify the device model type providing an adjustable setting and note the minimum continuous setting or intermittent operation. A one-bedroom dwelling under 1501 SF requires a 30 CFM continuous setting.

If you have any questions, please contact:
PDSD-Residential@tucsonaz.gov
City of Tucson Residential Plan Review

Submit a corrected plan set at https://www.tucsonaz.gov/Departments/Planning-Development-Services
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09/17/2025 Site Zoning - Standard REQUIRES RESUBMIT PDSD TRANSMITTAL

FROM: Nick Ross
Section Manager

PROJECT: TC-RES-0825-04004
3380 E ARROYO CHICO
New ADU and Garage (1st Review)

TRANSMITTAL DATE: 9/17/25

This site is located in the RX-1 zone (UDC 4.7.6). A single-family residence is permitted use in this zone (Table 4.8-1) subject to Use Specific Standards 4.9.7.B.6, .8, .9.

1. UDC Section 6.6.3.B.5 - An accessory dwelling unit is limited to 75% of the gross floor area of the principal dwelling, not to exceed 1,000 square feet of gross floor area . An accessory dwelling unit may be up to 650 square feet of gross floor area , regardless of the size of principal dwelling.
COMMENT: Confirm the 955sf of ADU includes the new laundry room and bathroom.

2. "Per the City of Tucson Inclusive Home Design Ordinance (https://www.tucsonaz.gov/files/sharedassets/public/v/1/city-services/planning-development-services/documents/inclusivehomedesignordinance.pdf), all new dwellings have a requirement to provide an “accessible route from public and common areas, including, but not limited to, a driveway or public street or sidewalk”. Draw, dimension, and label an accessible route from the driveway (or apron), sidewalk, or street to an accessible entrance. Ensure the route meets accessibility standards as articulated in Sections 402-404 of the ADA Accessibility Standards (https://www.access-board.gov/ada/chapter/ch04/). See TSM 7-01.4.3 for specifications, including slope and composition materials."

If you have any questions about this transmittal, please contact Nicholas.ross@tucsonaz.gov
08/14/2025 PDSD Application Completeness Express REVIEW COMPLETED