ADOPTS WITH AMENDMENTS:

International Residential Code 2015 (IRC 2015)

Part I — Administrative

Part II — Definitions

Part III — Building Planning and Construction

Part IV — Energy Conservation

Part V — Mechanical

Part VI — Fuel Gas

Part VII — Plumbing

Part VIII — Electrical

Part IX — Referenced Standards

Heads up: There are no amended sections in this chapter.

Part 1 — Scope and Application

R101.1 Title

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These provisions shall be known as the North Carolina Residential Code for One- and Two-family Dwellings and shall be cited as such and will be referred to herein as "this code." These regulations were adopted by the North Carolina Building Code Council on June 13, 2017 to be effective January 1, 2019. References to the International Codes shall mean the North Carolina Codes. The North Carolina Amendments to the International Codes are underlined.

R101.2 Scope

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The provisions of the International Residential Code for One- and Two-family Dwellings shall apply to the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location, removal and demolition of detached one- and two-family dwellings and townhouses not more than three stories above grade plane in height with a separate means of egress and their accessory structures not more than three stories above grade plane in height. Single family dwellings otherwise permitted by this code shall include bed and breakfast homes.

Exceptions:
  1. Live/work units located in townhouses and complying with the requirements of Section 419 of the International Building Code shall be permitted to be built as one- and two-family dwellings or townhouses. Fire suppression required by Section 419.5 of the International Building Code where constructed under the International Residential Code for One- and Two-family Dwellings shall conform to Section P2904.
  2. Deleted.

R101.2.1 Accessory Buildings

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Accessory buildings with any dimension greater than 12 feet (3658 mm) shall meet the provisions of this code. Accessory buildings are permitted to be constructed without a masonry or concrete foundation, except in coastal high hazard or ocean hazard areas, provided all of the following conditions are met:
  1. The accessory building shall not exceed 400 square feet (37 m2) or one story in height;
  2. The building is supported on a wood foundation of minimum 2-inch by 6-inch (51-mm by 152-mm) or 3-inch by 4-inch (76-mm by 102-mm) mudsill of approved wood in accordance with Section R317; and
  3. The building is anchored to resist overturning and sliding by installing a minimum of one ground anchor at each corner of the building. The total resisting force of the anchors shall be equal to 20 psf (958 Pa) times the plan area of the building.

R101.2.2 Accessory Structures

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The following accessory structures shall meet the provisions of this code.
  1. Decks, see Appendix M,
  2. Gazebos,
  3. Retaining walls, see Section R404.4,
  4. Detached masonry chimneys located less than 10 feet (3048 mm) from other buildings or lot lines,
  5. Swimming pools and spas, see Appendix V,
  6. Detached carports,
  7. Docks, piers, bulkheads, and waterway structures, see Section R327.
Exception: Portable, lightweight carports not exceeding 400 square feet (37 m2) or 12 feet (3658 mm) mean roof height.
UpCodes note: The 2017-2021 Approved Amendments 201309-Residential Code has an update to this section:

Only the following accessory structures shall meet the provisions of this code. 
  1. Decks, see Appendix M, 
  2. Gazebos, 
  3. Retaining walls, see Section R404.4
  4. Detached masonry chimneys located less than 10 feet (3048 mm) from other buildings or lot lines
  5. Swimming pools and spas, see Appendix V, 
  6. Detached carports,
    Exception: Portable lightweight carports not exceeding 400 square feet (37 m2) or 12 foot (3658 mm) mean roof height.
  7. Docks, piers, bulkheads, and waterway structures, see Section R327.

The delayed effective date of this Rule is January 1, 2022.
The Statutory authority for Rule-making is G. S. 143-136; 143-138.

R101.3 Intent Purpose

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The purpose of this code is to establish minimum requirements to safeguard the public safety, health and general welfare through affordability, structural strength, means of egress facilities, stability, sanitation, light and ventilation, energy conservation and safety to life and property from fire and other hazards attributed to the built environment.
Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall be applicable. Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern.
The provisions of this code shall not be deemed to nullify any provisions of local, state or federal law.
References to chapter or section numbers, or to provisions not specifically identified by number, shall be construed to refer to such chapter, section or provision of this code.

R102.4 Referenced Codes and Standards

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The codes and standards referenced in this code shall be considered part of the requirements of this code to the prescribed extent of each such reference.

Exception: Where enforcement of a code provision would violate the conditions of the listing of the equipment or appliance, the conditions of the listing and manufacturer's instructions shall apply.

R102.4.1 Conflicts

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R102.4.2 Provisions in Referenced Codes and Standards

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R102.5 Appendices

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Provisions in the appendices shall not apply unless specifically referenced in the code text.

The delayed effective date of this Rule is January 1, 2021.
The Statutory authority for Rule-making is G. S. 143-136; 143-138.
In the event any part or provision of this code is held to be illegal or void, this shall not have the effect of making void or illegal any of the other parts or provisions.

R102.7 Existing Structures

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For requirements of existing structures, refer to the North Carolina Administrative Code and Policies and the North Carolina Existing Building Code.
Additions, alterations or repairs to any structure shall conform to the requirements for a new structure without requiring the existing structure to comply with the requirements of this code, unless otherwise stated. Additions, alterations, repairs and relocations shall not cause an existing structure to become unsafe or adversely affect the performance of the building.

Part 2 — Administration and Enforcement

Section R103 Department of Building Safety

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See the North Carolina Administrative Code and Policies.

R103.1 Creation of Enforcement Agency

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R103.2 Appointment

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R103.3 Deputies

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Section R104 Duties and Powers of the Building Official

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See the North Carolina Administrative Code and Policies.

R104.1 General

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R104.2 Applications and Permits

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R104.3 Notices and Orders

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R104.4 Inspections

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R104.5 Identification

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R104.6 Right of Entry

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R104.7 Department Records

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R104.8 Liability

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R104.8.1 Legal Defense

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R104.9 Approved Materials and Equipment

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R104.9.1 Used Materials and Equipment

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R104.10 Modifications

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R104.10.1 Flood Hazard Areas

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R104.11 Alternative Materials, Design and Methods of Construction and Equipment

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R104.11.1 Tests

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Section R105 Permits

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See the North Carolina Administrative Code and Policies.

R105.1 Required

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R105.2 Work Exempt From Permit

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R105.2.1 Emergency Repairs

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R105.2.2 Repairs

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R105.2.3 Public Service Agencies

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R105.3 Application for Permit

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R105.3.1 Action on Application

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R105.3.2 Time Limitation of Application

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R105.4 Validity of Permit

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R105.5 Expiration

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R105.6 Suspension or Revocation

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R105.7 Placement of Permit

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R105.8 Responsibility

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R105.9 Preliminary Inspection

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Section R106 Construction Documents

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See the North Carolina Administrative Code and Policies.

R106.1 Submittal Documents

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R106.1.1 Information on Construction Documents

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R106.1.2 Manufacturer's Installation Instructions

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R106.1.3 Information on Braced Wall Design

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R106.1.4 Information for Construction in Flood Hazard Areas

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R106.2 Site Plan or Plot Plan

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R106.3 Examination of Documents

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R106.3.1 Approval of Construction Documents

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R106.3.2 Previous Approvals

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R106.3.3 Phased Approval

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R106.4 Amended Construction Documents

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R106.5 Retention of Construction Documents

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Section R107 Temporary Structures and Uses

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See the North Carolina Administrative Code and Policies.

R107.1 General

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R107.2 Conformance

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R107.3 Temporary Power

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R107.4 Termination of Approval

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Section R108 Fees

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See the North Carolina Administrative Code and Policies.

R108.1 Payment of Fees

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R108.2 Schedule of Permit Fees

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R108.3 Building Permit Valuations

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R108.4 Related Fees

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R108.5 Refunds

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R108.6 Work Commencing Before Permit Issuance

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Section R109 Inspections

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See the North Carolina Administrative Code and Policies.

R109.1 Types of Inspections

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R109.1.1 Foundation Inspection

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R109.1.2 Plumbing, Mechanical, Gas and Electrical Systems Inspection

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R109.1.3 Floodplain Inspections

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R109.1.4 Frame and Masonry Inspection

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R109.1.5 Other Inspections

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R109.1.5.1 Fire-Resistance-Rated Construction Inspection

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R109.1.6 Final Inspection

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R109.1.6.1 Elevation Documentation

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R109.2 Inspection Agencies

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R109.3 Inspection Requests

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R109.4 Approval Required

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Section R110 Certificate of Occupancy

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See the North Carolina Administrative Code and Policies.

R110.1 Use and Occupancy

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R110.2 Change in Use

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R110.3 Certificate Issued

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R110.4 Temporary Occupancy

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R110.5 Revocation

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Section R111 Service Utilities

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See the North Carolina Administrative Code and Policies.

R111.1 Connection of Service Utilities

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R111.2 Temporary Connection

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R111.3 Authority to Disconnect Service Utilities

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Section R112 Board of Appeals

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See the North Carolina Administrative Code and Policies.

R112.1 General

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R112.2 Limitations on Authority

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R112.3 Qualifications

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R112.4 Administration

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Section R113 Violations

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See the North Carolina Administrative Code and Policies.

R113.1 Unlawful Acts

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R113.2 Notice of Violation

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R113.3 Prosecution of Violation

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R113.4 Violation Penalties

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Section R114 Stop Work Order

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See the North Carolina Administrative Code and Policies.

R114.1 Notice to Owner or the Owner's Authorized Agent

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R114.2 Unlawful Continuance

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