Product Approval (Test Lab)

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.

LA Research Reports (LARR)
Building Research Section (BRS)
Mechanical Test Lab (MTL)
Electrical Test Lab (ETL)

About Test Lab

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

For licensing of product approval test labs, refer to the Materials Control section in the Inspection Bureau.

Additional Resources

  • FAQ

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Addition of 3 or more newly-constructed units will trigger DA requirements.

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A single family zone only allows one house. You will need to obtain a variance from the Department of the City Planning for any additional dwelling unit on your property.

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Depending on the project, there could be one or as many as needed to complete the project.

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One inspector for building, electrical, plumbing, HVAC, grading, and green. Separate for Fire Sprinkler.

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Minimum of 5% must be in compliance.

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1 in 6 DA parking stalls required by Table 11B-208.3 must be a van stall.

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Each house is required to have 2 parking spaces. The two-car parking spaces shall be covered, if the house is in a single family zone.

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You can obtain one combined permit for the addition which covers the electrical, plumbing, HVAC, etc. work. However, a separate Sprinkler permit is required if the house needs to be sprinklered throughout due to the addition and remodeling.

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We only need one set of plans for plan review. Upon plan approval, you will need to provide two sets of final plans.

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Maximum two residential heads shall be hydraulically calculated for the design criteria listed in section 10.2.1 of NFPA 13D.

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