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Permit Number: TC-RES-0425-02263
Parcel: 133122890

Review Status: Requires Resubmit

Review Details: RESIDENTIAL NEW DWELLING v.1

Permit Number - TC-RES-0425-02263
Review Name: RESIDENTIAL NEW DWELLING v.1
Review Status: Requires Resubmit
Review Date Reviewer's Name Type of Review Description Status Comments
05/30/2025 Site Zoning - Standard APPROVED
06/04/2025 Site Engineering - Standard NOT REQUIRED
06/04/2025 Bldg Permits - Post Review Express PENDING ASSIGNMENT
04/30/2025 Addressing Validation REQUIRES RESUBMIT An Accessory Dwelling Unit (ADU) requires to be separately addressed, and the location does not appear to have units attached to the address, please contact Pima County Addressing at addressing@pima.gov or 520-724-9512 to properly address the ADU. Note, a resubmittal and address change is required. For questions: Building_Official@tucsonaz.gov
05/27/2025 Residential Building - Standard REQUIRES RESUBMIT TC-RES-0425-02263
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.

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

An impact fee payment is required for an ADU or second dwelling at the time of permit payment.

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

GENERAL COMMENTS :

1. A dwelling requires a fire barrier between units (duplex) without openings. Provide plans with independent utility connections for each unit.
2. Show compliance with the Inclusive Home Design Ordinance adopted by the City of Tucson Ordinance #10463 on 10/16/2007. Notate accessible route, minimum door width, changes in floor elevation, door hardware, electrical outlet reach range, grab bar reinforcement, etc.

SITE PLAN:

1. Show the location and size of the yard water line, R106.1.1. Each dwelling requires an appropriate source of electrical and water supply. Identify the utility lines requiring upgrade or replacement.
2. Clarify if the existing dwelling has masonry exterior walls. The dwellings require one-hour fire-resistive construction between units in compliance with IBC Table 721.1(2).

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.

SECTIONS - DETAILS:

1. Show one-hour fire-resistive framed construction separating dwellings in compliance with IBC Table 721.1(2).
2. 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. Clarify the ceiling/roof insulation detail showing the air-impermeable rigid insulation material adhered to either side of the roof sheathing and the batt insulation in contact with the roof material.

PLUMBING PLANS:

1. The Tucson Water Department limits flow rates for the water meter size in compliance with P2903.7. Show an appropriate yard pipe bypassing the existing dwelling and show an appropriate water meter size for the additional demand.
2. Show an individual accessible water supply shut off for each dwelling unit, P2903.9.1.
3. Show each gas pipe segment sized in conformance with Table G2413.4(1). A ¾” gas line may supply 180,000 BTU if the developed length not greater than 30 feet. Show a compliant gas system.

MECHANICAL PLANS:

1. Show the HVAC system size for the building demand in accordance with 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 one-bedroom dwelling under 1501 SF requires a 30 CFM continuous setting.
3. Provide demand calculations in accordance with Manual J/S/D standards, M1401.3, M1601.1. Systems shall be sized in accordance with Manual S based on building loads calculated in accordance with Manual J and duct systems sized in accordance with Manual D.

ELECTRICAL PLANS:

1. TEP may require the 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.
2. Clarify the Riser Diagram showing if the existing meter base requires a 400 AMP upgrade with new feeder, E3602.1 & E3603.1.
3. Show a circuit number for the smoke alarms, R314.
4. 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, remove the last note about small appliance circuits.
5. Show a wall-switch-controlled lighting outlet providing illumination on the exterior side of each egress door having grade level access R3903.3.

OUTDOOR LIGHTING CODE

1. Show full cutoff fixtures were located within 25 feet from the property line OLC 401.3.3.

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
04/30/2025 PDSD Application Completeness Express REVIEW COMPLETED