/* * SitePlanAce Proprietary Software * Copyright (c) 2026 SitePlanAce * https://www.siteplanace.com * All Rights Reserved. * * Unauthorized reproduction or redistribution prohibited. */ Residential Roof Permit Calculator

Residential Roof Permit Calculator

Use this calculator to describe a residential roofing project and identify the plan, energy, fire-classification, and roof-framing information associated with the selected scope. Local jurisdiction requirements may vary.

Enter the contractor license number when applying as a contractor.
The workbook's plan guidance is advisory: the local Authority Having Jurisdiction (AHJ) determines its submittal requirements. Confirm whether plans, energy forms, and supporting documentation are required before submitting.
/* * SitePlanAce Proprietary Software * Copyright (c) 2026 SitePlanAce * https://www.siteplanace.com * All Rights Reserved. * * Unauthorized reproduction or redistribution prohibited. */

Roof framing information

Generated permit information

Project description

Plan submittal guidance

Energy compliance

Fire classification

Roof framing / maximum span

Code and installation notes

Applicant responsibility

Source workbook identifies the 2022 California Building Standards Code, Title 24, California Code of Regulations. Verify currently adopted code editions, local amendments, fire-zone mapping, snow loads, and AHJ requirements before relying on this output.

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Building Standards for Residential Reroofing

 

Scope Examples: Installation, repair, or renovation of roofing systems for residential buildings. This may include:

  • Replacing or repairing roof coverings (shingles, tiles, metal panels, etc.).
  • Installing or updating underlayment, flashing, or roof ventilation systems.
  • Adding or upgrading skylights, chimneys, or other roof features.
  • Re-roofing over existing materials, or completely removing and replacing the roof structure.

 

Title 24 is divided into specific parts addressing various aspects of construction. Key sections for residential reroofing include:

  1. California Residential Code (CRC):

    • Governs the structural and safety requirements for residential roofing, including load-bearing capacity, roof slope, and material specifications.
    • Includes regulations for roof covering materials, attachment methods, and minimum design loads for roofs.
    • Specifies requirements for roof ventilation and drainage to prevent moisture buildup and ensure adequate airflow in attics.

  2. California Building Code (CBC):

    • Applies to structural requirements for roofing systems, including load distribution, wind resistance, and seismic considerations.
    • Regulates the installation of roofing materials, including the use of fire-resistant materials in areas with high fire risk.

  3. California Energy Code:

    • Enforces energy efficiency standards for roofing systems, such as cool roof requirements, which mandate the use of reflective materials to reduce heat absorption and improve energy performance.
    • Specifies requirements for insulation and ventilation to increase the energy efficiency of the building.

  4. California Mechanical Code (CMC):

    • Addresses the integration of mechanical systems with roofing, such as vent pipes, attic ventilation, or other system penetrations through the roof.

  5. California Electrical Code (CEC):

    • Regulates the safe installation of electrical components on roofs, such as solar panels, antennas, or other electrical systems requiring roof access.

  6. California Fire Code:

    • Specifies fire-resistance requirements for roofing materials, particularly in areas subject to wildfires.
    • Regulates the use of fire-retardant treated materials and fire-safe roofing systems to prevent fire spread.