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Permit Review Detail

Permit Number: TC-RES-1025-04959
Parcel: 13811029E

Review Status: Requires Resubmit

Review Details: RESIDENTIAL ADU v.1

Permit Number - TC-RES-1025-04959
Review Name: RESIDENTIAL ADU v.1
Review Status: Requires Resubmit
Review Date Reviewer's Name Type of Review Description Status Comments
10/29/2025 Bldg Permits - Post Review Express PENDING ASSIGNMENT
10/14/2025 Addressing Validation REQUIRES RESUBMIT ATTENTION: Parcel/addressing issue. The site plan shows to be for a duplex. The location does not have units attached to the address. Please contact Pima County Addressing at addressing@pima.gov or 520-724-9512 to verify and add the unit numbers. After address/units have been added or verified you'll need to submit an address change request to update this record in the sub records tab of the permit along with a new aerial/site plan that shows the corrected addressing. You do have Unit 2 and 3 on the site plan, but Unit 1 does not need to be included on future submittals since no work is being done to the primary dwelling.
For questions: PDSD-Residential@tucsonaz.gov
10/20/2025 Residential Building REQUIRES RESUBMIT TC-RES-1025-04959

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 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.

GENERAL REQUIREMENTS:

The City of Tucson adopted the 2018 IRC with amendments and building ordinances for all dwellings. The 2024 IRC will be in effect Jan 1, 2026.

Clarify if the proposal is for ADU’s or a duplex of two single family dwellings. Check for the Zoning/Planning staff for the maximum ADU size. Single family dwellings have additional building ordinance requirements.

Each dwelling unit with kitchen requires a separate Pima County assigned street address after Zoning approval, R319. Show Pima County assigned unit numbers at each dwelling on the site plan. https://www.pima.gov/1010/Addressing-Frequently-Asked-Questions

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

PLANS:

1. Notate a cool (white) roof finish (greater than 60 SRI) as required by the ADU provisions.
2. Show a maximum ½” floor elevation changes at a notated accessible route entrance on the floor plan, R106.1.1. Include all threshold conditions for a route from the exterior into the living space.

PLUMBING PLANS:

1. The Tucson Water Department limits flow rates for the water meter size in compliance with P2903.7. Show an appropriate water meter size for the additional demand.

MECHANICAL PLANS:

1. Provide demand calculations in accordance with Manual J standards, M1401.3, M1601.1.
2. Provide (an HVAC system with fresh air intake) whole-house mechanical ventilation with controlled exhaust, R303.4; N1103.6 & M1505.4. Identify the device model number providing an adjustable setting and note the minimum continuous setting. A two or three-bedroom dwelling under 1501 SF requires a 45 CFM continuous setting.

ELECTRICAL PLANS:

1. TEP may require a metered service panel for the property at the closest building to the service transformer. A service line change or a new meter location must be coordinated with TEP for approval. Show an underground feeder from a metered service panel to the more distant dwelling.
2. Update the Riser Diagram for the close dwelling and the feeder size to the second dwelling panel per TEP coordination, NEC 225.30 and E3403.
3. Update the electrical load calculation showing the total demand including a 13kw water heater, E3602.2.
4. Provide the appropriate wire size for each protection rating, E3702.2. Update circuit #18 wire size.
5. Peninsular counter tops require at least one receptacle outlet within 12” below the countertop surface, E3901.4.2 and E3901.4.3.
6. Show two or more 2O AMP small appliance circuits at the kitchen countertop receptacle outlets; they may also serve the breakfast room and dining room, but not other locations, E3703.2 and E3901.3. Also show a separate refrigerator circuit, E3702.5.

INTERNATIONAL ENERGY CONSERVATION CODE:

1. Energy Certificate: (Mandatory) place near the indoor furnace or in utility room, N1101.14. Add notation to plans.

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

Submit a corrected plan set at https://www.tucsonaz.gov/pdsd
10/15/2025 Residential Engineering REQUIRES RESUBMIT Permit: TC-RES-1025-04959
Location: 6214 S FONTANA AV
Review Date: 10/15/2025
Site Engineering Comments:
1. Per the City of Tucson Building Code Standards for Accessory Dwelling Units: https://www.tucsonaz.gov/files/sharedassets/public/v/1/pdsd/documents/policy/2022.01.ie_policy_building-code-standards-for-accessory-dwelling-units.pdf, all new accessory dwelling units 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, 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/

If you have any questions or concerns, please contact
Dylan Molina
Dylan.Molina@tucsonaz.gov
10/29/2025 Residential Zoning REQUIRES RESUBMIT FROM: PDSD Zoning Review Section

PROJECT: TC-RES-1025-04959
6214 S FONTANA AV. – R-2
2 Accessory Dwelling Units (ADUs) (1st Review)

TRANSMITTAL DATE: October 29, 2025

COMMENTS: Provide a detailed response letter with your submittal that clearly shows how you have addressed all Zoning comments.

This site is located in the R-2 zone (UDC 4.7.9). A single-family residence (SFR) with an accessory dwelling unit (ADU) is a permitted use in this zone (Table 4.8-2). See Use-Specific Standards .9.7.B.6, 8, & 9 and 6.6.3.

1. Per UDC Article 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. The proposed 1,100 S.F. ADUs exceed the allowed 1,000 S.F. and a Board of Adjustment for Variance must be submitted and approved. Board of Adjustment application/requirements can be found at: https://www.tucsonaz.gov/Departments/Planning-Development-Services/Planning-Zoning-Applications/Zoning-Administration. Contact for the Board of Adjustment is Mark Castro at Mark.Castro@tucsonaz.gov.

2. The lot coverage calculation is not correct. Per UDC Article 6.4.3.C.1.a Roofed areas, porches, open on at least one side are not included in the calculation.

3. Clearly demonstrate that the requirements of UDC Article 6.6.3.B.4 are met.

The Unified Development Code (UDC) can be found at: https://www.tucsonaz.gov/Departments/Planning-Development-Services/Codes/Zoning-Code.

If you have any questions about this transmittal, please contact Zone1.desk@tucsonaz.gov.
10/14/2025 PDSD Application Completeness Express REVIEW COMPLETED