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.
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).
Additional Resources
- FAQ
- Applications
- Publications
FAQ Search Results
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Replacement parking is not required for a garage converted into a JADU.
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Public Works - Bureau of Engineering will determine if the JADU requires a new address.
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Two forms must be completed together:
- Application for New General Approval or Technical Modification (PC-STR.App18)
- Application for Renewal and Clerical Modification of General Approval (PC-STR.App19)
- Each form shall be processed separately with each its respective fee, specified on each application. One check may be made for the total or separate checks may be sent with each application..
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Section III of Alternate Building Materials Products Approval Requirements (IB-P-BC2014-119) specifies the qualifications that Nationally Recognized Model Code Agency must meet for their Evaluation Report to be used as a basis for a Los Angeles City Research Report.
Currently, Evaluation Reports from the International Code Council Evaluation Services (ICC-ES) and, the International Association of Plumbing and Mechanical Officials Uniform Evaluation Service (IAPMO UES) may be used as a basis for a Los Angeles City Research Reportttt.
Alternate Building Materials Products Approval Requirements (IB-P-BC2014-119)
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State law allows a local ADU ordinance to establish certain ADU development standards. However, these standards shall not include minimum lot size (see GC Section 65852.2(a)(1)(B)(i)). Therefore, a minimum Lot size requirement for a given zone classification shall not be the basis of a denial of a new ADU.
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When submitting your Building Permit application, please indicate the ADU Standard Plan number you are using in the work description.
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When submitting your Building Permit application, please indicate the SFD Standard Plan number you are using in the work description.
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Mayor Bass’ Emergency Executive Order No. 1 authorizes that a project may be repaired or reconstructed with the same nonconforming use, yards, height, number of stories, lot area, floor area, residential floor area, residential density, loading space, parking or off-site signs as the original building, provided that the rebuilt or restored structures or facilities do not exceed 110% of the square footage, height, and bulk existing immediately prior to the Wildfires.
The project will need to comply with the current Building Codes.
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Reusing of the existing slab and foundation are allowed provided a licensed California engineer or architect has evaluated the foundation system and determines that it is in good condition. Documentation including observation and testing of the system will need to be provided to the Department for review and approval. In certain geological areas, further soils/geotechnical investigation may be required to evaluate the reuse of the foundation system.
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Yes. To assist homeowners in rebuilding after the 2025 wildfires and provide temporary living arrangements, under the Mayor's Emergency Executive Order No. 1, the placement of such structures on the property is allowed for up to three years, or while an active building permit is applicable to said property, whichever is longer. For more information, please see Temporary Housing For Fire Damaged Properties Information Bulletin.
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