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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Most of the ADU Standard Plans have been pre-approved with various options. Some customization is possible, such as changes to window and door types and sizes, colors, etc. Approved standard plan floor plans can also be rotated.
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Standard plans are intended to serve as a base design that has already been reviewed by the Department of Building and Safety for Building Code Compliance. However, each property is unique, and modifications / customizations to a pre-approved standard plan may be necessary. Any customization of a pre-approved standard plan must be completed by the plan’s owner. Please note that design changes may result in additional costs and could result in additional permitting review timelines, as revised portions of the plan will require City review.
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One-time Approval. This approval is granted for fixtures and equipment that are custom made or installed at a specific job site. The evaluation and testing can often be performed at the location where the fixture/equipment is installed. Application for this type of approval may be filed by the building owner, installer, vendor, or manufacturer. The approval is for one time and for a specific location, and it cannot be used for another installation.
General Approval/Laboratory Approval. This approval is granted for fixtures and equipment to be used anytime and anywhere within the City. The testing and physical evaluation are usually done in an approved laboratory, unless a suitable site visit is prearranged. Application for this type of approval shall be filed by the manufacturer.
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- Installation of one Residential Elevator; or
- Installation of one Cabled Traction Elevator; or
- Installation of one Hydroelectric Elevator.
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- Installation of Fire Sprinkler for a single Family Dwelling or Duplex.
- Installation of Fire Sprinkler in a Commercial Building that is a. Four (4) stories or less and b. No more than a total of four (4) hydraulic calculations.
- Installation of fire Sprinkler in an Apartment that is a. Four (4) stories or less and; b. No more than a total of four (4) hydraulic calculations.
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- Installation of HVAC system for one restaurant with up to 2 commercial kitchen hoods;or
- Installation of HVAC system for up to 2 levels of garage ventilation;or
- Installation of HVAC system for residential buildings up to 3 stories including garage ventilation;or
- Installation of HVAC system for commercial tenant improvement.
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must
- Plumbing systems for buildings of 4 stories or less and up to 5 sheets of riser diagrams.
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- The project is an apartment or commercial building; and
- The building is 2 stories or more; and
- The building is 4 units or more; and
- The project does not add new floor area; and
- The project must have no changes in use; and
- Only one building is allowed per plan check application.
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- The project is in a commercial building; and
- The project is above the ground floor; and
- The project must have no changes in use; and
- The project must have no changes to the exit components; and
- The project must have no increase in occupant load.
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