Building Research Section (BRS)

The BRS approves alternate building materials or products that are at least equivalent to the materials prescribed in the code in terms of quality, effective time period of fire resistance, strength, effectiveness, durability and safety.

LA Research Reports (LARR)

Additional Information

Approved materials are published as Los Angeles Research Reports (LARR).

The Building Research Section is located at our Metro location (201 N Figueroa St, Rm 880, Los Angeles, CA 90012)

LA Research Reports (LARR)

LADBS approves alternate building materials or products that are at least equivalent to the materials prescribed in the code in terms of quality, effective time period of fire resistance, strength, effectiveness, durability and safety.

Approved materials are published as Los Angeles Research Reports (LARR).

 

Open LA Research Reports Database

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A Certificate of Occupancy is required for new buildings, additions, change of use or occupancy.

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Commissioning report is required for all new non-residential projects of 10,000 square feet or more. The exceptions are warehouses, open parking garages and similar projects.

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When the customer decides not to use anti graffiti coating on the first 9 feet of the exterior of the building.

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When required by the engineer or indicated on the approved plans.

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When there are higher stresses in the structural design.

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When all wallboard has been installed and nailed or screwed in.

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When clearance for the electrical is required to process the Certificate of Occupancy.

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When the building is a title 19, A or E occupancy.

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When clearance for the fire sprinkler is required to process the Certificate of Occupancy.

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When all forms and rebar (reinforcing bar) are in place, but before concrete is placed.

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Minimum Info to be Shown on Grading Plans
IB/P/BC 2026-133 - Effective
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GUIDELINES AND APPLICATION FOR SUBMITTING HAUL ROUTES WITH IMPORT OR EXPORT AMOUNTS GREATER THAN 1,000 CUBIC YARDS
IB/P/BC 2026-134 - Effective
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SS Program - Permitting and Inspection Process Guidelines
IB/P/BC 2026-136 - Effective
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SS Program - Structural Design Guidelines
IB/P/BC 2026-137 - Effective
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Guidelines for Determining Live Loads Surcharge from Sidewalk Pedestrian Traffic and Street Traffic
IB/P/BC 2026-141 - Effective
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Guidelines for Permitting New Antennas and Replacement of Units on Existing Telecommunication Antennas (Cell Towers)
IB/P/BC 2026-146 - Effective
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Structural/Seismic Peer Review Protocol
IB/P/BC 2026-147 - Effective
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Procedures for the Application of ASCE 41-22 to Existing Buildings
IB/P/BC 2026-148 - Effective
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Liquefaction Analysis Guideline
IB/P/BC 2026-151 - Effective
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Structural Design Guidelines for Non-Ductile Concrete Buildings
IB/P/BC 2026-152 - Effective
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Mandatory Requirements Checklist: Additions and Alterations to Non-Residential Buildings
GRN 10-2023 - Effective
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Mandatory Requirements Checklist: Additions and Alterations to Non-Residential Buildings
GRN 10-2017
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MANDATORY REQUIREMENTS CHECKLIST ADDITIONS AND ALTERATIONS TO NON-RESIDENTIAL BUILDINGS
GRN 10-2015
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MANDATORY REQUIREMENTS CHECKLIST ADDITIONS AND ALTERATIONS TO NON-RESIDENTIAL BUILDINGS
GRN 10-2016
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MANDATORY REQUIREMENTS CHECKLIST ADDITIONS AND ALTERATIONS TO NON-RESIDENTIAL BUILDINGS
GRN 10-2014
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MANDATORY REQUIREMENTS CHECKLIST ADDITIONS AND ALTERATIONS TO NON-RESIDENTIAL BUILDINGS
GRN 10-2026
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Mandatory Requirements Checklist Additions and Alterations to Non-Residential Buildings and Residential Buildings Over Six Stories (for 2011 Codes)
GRN 10-2013
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Mandatory Requirements Checklist: Additions and Alterations to Residential Buildings
GRN 9-2023 - Effective
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Mandatory Requirements Checklist: Additions and Alterations to Residential Buildings
GRN 9-2017
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MANDATORY REQUIREMENTS CHECKLIST ADDITIONS AND ALTERATIONS TO RESIDENTIAL BUILDINGS
GRN 9-2014
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Results: 3 6 10 25