“ASHRAE Guideline 0.2-2015 Commissioning Process for Existing Systems and Assemblies”
requires the following items as part of Retro-Commissioning:

• Define Owner’s EBCx goals and objectives.
• Select the Initial EBCx Team.
• Collect and analyze historical energy use.
• Study the building and its operational characteristics with regard to energy use, occupant health and productivity, and equipment and structural reliability and longevity.
• Develop CFR
• Review building documentation such as building plans, specifications, O&M manuals, and maintenance records.
• Perform diagnostic monitoring and establish trend logs to documents building performance for several weeks.
• Visually inspect systems for correct installation and operation.
• Perform simple repairs required to keep equipment operating, reduce energy use, and allow more accurate data gathering such as trend logging.
• Perform functional tests.
• Identify potential modifications that will reduce energy use and/or cost (includes a descriptions of the measure, estimated energy savings, cost estimate, and simple payback).
• Perform an engineering and economic analysis of potential modifications.
• Prepare a rank-ordered list of appropriate modifications.
• Implement recommended modifications.
• Prepare the draft EBCx Report, which includes the Implementation Report.
• Revise O&M procedures to improve efficiency and equipment longevity.
• Update facility personnel training programs for current and revised systems. Implement retraining of O&M staff as required.
• Transition to Ongoing Commissioning (OCx) with the OCx Plan. Ensure persistence of benefits with measurement and verification (M&V) strategies such as trend logging and monitoring.
• Prepare the final EBCx Report, including the Lessons Learned Report.

Definitions:
CFR: Current Facility Requirements
EBCx: Existing-Building Commissioning
M&V: Measurement and Verification
OCx: Ongoing Commissioning
O&M: Operation and Maintenance

”ASHRAE Guideline 0.2-2015 Commissioning Process for Existing Systems and Assemblies” requires the following items as part of the Audit:

• Convene kick-off meeting to form team. Develop a procedural plan.
• Collect and analyze historical energy use.
• Study the building and its operational characteristics with regard to energy use.
• Identify potential modifications that will reduce energy use and/or cost (includes a description of the measure, estimated energy savings, cost estimate, and simple payback).
• Perform an engineering and economic analysis of potential modifications.
• Prepare a rank-ordered list of appropriate modifications.
• Prepare a report to document the analysis process and results.

The BBSC consists of five citizens appointed by the Mayor and confirmed by the City Council. The BBSC is granted the authority, by the Los Angeles Municipal Code (LAMC) and by the City Charter, to hear many kinds of appeals related to Building ordinances.

Read more about the BBSC.

The minimum size of an efficiency unit is 220 square feet, plus a code compliant closet and bathroom; however, the Ordinance does not specify any minimum square footage requirements  for an ADU or JADU, except for Movable Tiny Houses (MTHs). This provision refers to any other current or future zoning ordinances that would prohibit an efficiency unit ADU

Once you have your plans ready for submittal, you can submit them through our Eplan portal using the address '1 Standard Plan Way'. Please include in the work description, 'ADU Standard Plan Program: X-Story, X-bedroom(s) with options. (XXX sf)'. You will need to submit plans for each unit you are proposing. 

The evaluation time frame is based on the complexity of the product. Contact the Engineering Research Section for the current status. The process to obtain a Los Angeles City Research Report consists of the following steps:

1. Determine if a LARR is required or not using the Information Bulletin P/BC 2020-119.
2. Submit the following information to the Los Angeles City Department of Building and Safety Engineering Research Section: product literature describing how your product is to be used, substantiating data (i.e. test reports by approved 3rd party testing agency, engineering analysis), a completed application form for new LARR, along with a check in U.S. dollars drawn on a U.S. bank.
3. Once this information is received, your application package will be reviewed for completeness. If any deficiencies are determined, a letter will be sent to the applicant stating the deficiencies requiring correction or completeness.
4. After determining the application package is complete, the application will be logged in and assigned a log number and placed in line for review.
5. The substantiating data submitted will be evaluated to determine if it is at least the equivalent of the prescribed devise, material, or method of construction specified by the Los Angeles City Building Code in terms of quality, effective time period of fire resistance, strength, effectiveness, durability, and safety.
6. After reviewing the substantiating data, the research engineer assigned to the application will write a letter stating their comments and the information needed to complete the evaluation and/or correct the evaluation, if necessary.
7. Upon resolution of all comments a draft copy of the Los Angeles City Research Report will be written. The draft copy of the Research Report will be e-mailed to the applicant for their review and comment. In addition, a supplemental fee will be sent to the applicant to bill the additional reviewing hours for the report approval beyond the first 6 hours.
8. After all comments from the applicant have been resolved and the supplemental fee has been paid by the applicant, the Research Report will be submitted to the Chief of the Engineering Research Section for final review and approval. A signed copy of the Los Angeles City Research Report will be mailed to the applicant and a copy will be posted on the LADBS web site.

The evaluation time frame is based on the complexity of the product.  Contact the Building Research Section for the current status.

The process to obtain a Los Angeles City Research Report consists of the following steps:

1. Determine if a LARR is required or not, using the Information Bulletin P/BC 2020-119
2. Submit the following information to the Los Angeles City Department of Building and Safety Building Research Section:
   1. Product literature describing how your product is to be used
   2. Substantiating data (i.e. test reports by approved 3rd party testing agency, engineering analysis)
   3. A completed application form for new LARR (PC-STR.App18)
   4. A check in U.S. dollars drawn on a U.S. bank.
3. Once this information is received, your application package will be reviewed for completeness. If any deficiencies are determined, a letter will be sent to the applicant stating the deficiencies requiring correction or completeness.
4. After determining the application package is complete, the application will be logged in and assigned a log number and placed in line for review.
5. The substantiating data submitted will be evaluated to determine if it is at least the equivalent of the prescribed device, material, or method of construction specified by the Los Angeles City Building Code in terms of quality, effective time period of fire resistance, strength, effectiveness, durability, and safety.
6. After reviewing the substantiating data, the research engineer assigned to the application will write a letter stating their comments and the information needed to complete the evaluation, if necessary.
7. Upon resolution of all comments, a draft copy of the Los Angeles City Research Report will be written. The draft copy of the Research Report will be e-mailed to the applicant for their review and comments. In addition, a supplemental fee will be sent to the applicant to bill the additional reviewing hours for the report approval beyond the first 6 hours. 
8. After all comments from the applicant have been resolved and the supplemental fee has been paid by the applicant, the Research Report will be submitted to the Chief of the Building Research Section for final review and approval. A signed copy of the Los Angeles City Research Report will be mailed to the applicant and will also be posted on the LADBS website under "LA Research Reports".

The Zoning Code Manual and Commentary PDF is an interpretation of the Zoning code. It is a useful tool to answer more specific questions regarding Zoning.

• To obtain a building permit, you will need to provide a completed Building Permit Application, a copy of the LA City approved stamped ADU Standard Plan, and plans indicating how the Standard Plan will be adapted to a specific site. This should include the necessary details indicating how and where the structure will be built in a specific location (i.e. plot plan showing setbacks, etc.).
• All applications and plans must then be submitted at one of our offices or uploaded/submitted via Eplan. No structural calculations are required. The Department will review all of the plans and issue a building permit once it is verified site-specific factors for the property, including compliance with the Zoning Code and foundation requirements.

For a complete listing of building permit submittal requirements, please refer to the Building Permit Checklist.

Eaves: Project into the required side yard not more than 4 inches for each foot of width of such side yard, provided the width of the side yard is not reduced to less than 30 inches. Project into the required front and rear yards not more than 30 inches. Project into the side yard adjoining the street lot line of a corner lot not more than 30 inches, provided the width is not reduced to less than 30 inches.

Open roof and unenclosed trellis

Open, unenclosed stairways or balconies not covered by a roof or canopy: Project into a required rear yard not more than 4 feet. Project into a required front yard 30 inches. Project into the side yard adjoining a street lot line of a corner lot, not more than 30 inches, provided the width is not reduced to less than 30 inches.

Open, unenclosed porches, platforms, or landing places (including access stairways) not covered by a roof or canopy which does not extend above the level of the first floor of the building, provided: Projection is maximum 6 feet into the required front, side, and rear yards Projection is maximum 6 feet above adjacent grade.

Chimney: Project into the required front, side, and rear yards not more than 2 feet. The width of the required side yard shall not be reduced to less than 3 feet.

A bay window or garden type window of normal size may project 8 inches into a required side yard, provided the width of the required side yard is not reduced to less than 3 feet.

Tankless water heaters may project 18 inches into the required side yard, provided such side yard is not reduced to less than 3 feet in width.

The following roof structures are allowed to project above the like-for-like height limit:

Stairway housing (no larger than 72 square feet) may project 5 feet.

Elevator housing may project 5 feet, provided it is setback a minimum of 5 feet from the roof perimeter.

Chimneys may project 5 feet.

The proposed conversion will be subject to all zoning code and fire sprinkler regulations in place at the time of the proposed change of use. If the ADU or JADU was constructed within an existing  building, non-conforming rights from the building and use that existed prior to the ADU or JADU may be considered at the discretion of LADBS.

Public Record Act Requests to the Department of Building and Safety (LADBS) may include a wide variety of Departmental documents and materials (including print, photographic, and electronic formats) that were created or obtained by the department and are, at the time the request is filed, in the department's care and custody. The Public Records Act excludes certain categories of records from disclosure.

Please be advised that some LADBS documents are available in electronic format and can be obtained online from the Departments Official Document Repository, the LADBS Internet Document Imaging System (IDIS) here:

Search Online Building Records

Other documents that are not available online, but are indexed in IDIS can be obtained through the LADBS Public Records Counter by submitting a Research Request Form available here:

Forms and Publications - Service Requests

Copies of Building Plans (Blueprints) are also obtained through the LADBS Public Records Counter by submitting a Research Request Form.

The BBSC is granted the authority by the Code and by the City Charter, to hear many kinds of appeals, including but not limited to the following:

• Appeals of the Department’s action regarding requests for slight modifications of the Building Ordinances and/or Code Violation Inspection Fee Ordinances, pursuant to the authority described in LAMC Section 98.0403.1(b) 1.
• Appeals from determinations, orders or actions of the Department pertaining to enforcement of specific ordinances, regulations or laws in individual cases, pursuant to LAMC Section 98.0403.1(b) 2 (i.e. error and abuse, except land use issues)
• Applications for import/export of soil pursuant to LAMC Section 91.7006.7.4.
• "Quasi-Judicial" proceedings pursuant to Division 89 of the LAMC (NOID, PNH)
• Adoption of Building, Electrical, Mechanical, Plumbing, HVAC, etc Ordinances
• The BBSC does not hear cases related to land use ordinances. These cases shall be heard by the Department of City Planning in accordance with Section 12.26K of the Los Angeles Municipal Code.
• Read more about the BBSC appeals process.

Automobile parking is not required for ADUs created within an existing or proposed main home or an existing accessory structure. ADU parking may be required if the ADU exceeds the existing square footage of an existing main home (primary residence) or accessory structure, as well as for a newly constructed detached ADU. Other parking waivers in LAMC Section 12.22 A.33(c)(12)(i) may also apply.

As of June 9, 2025, LADBS will start accepting applications using the process shown in the Implementation Guidelines.

Generally, an appeal to the BBSC is scheduled for a hearing date within thirty days of receipt of the appeal to the BBSC. This time period will be extended in cases that require additional documentation and/or research. In the case of import/export applications, the scheduled hearing date is contingent upon receipt of the appropriate environmental clearance from the Department of City Planning (i.e. Categorical Exemption, Mitigated Negative Declaration, or Environmental Impact Report) AND responses from the Department of Transportation and the Department of Public Works. 

For Zoning and Building code questions, please contact our call center at 311 or (213) 473-3231 and ask to speak with the LADBS Zoning & Building Code Engineer. Some zoning information can also be found on ZIMAS.

For Zoning and Building code questions, please contact our call center at 311 or (213) 473-3231 and ask to speak with the LADBS Zoning & Building Code Engineer. Some zoning information can also be found on ZIMAS.

Anyone may initiate a request for public records.

Yes. Other agency reviews and clearance requirements may still apply depending on your individual site conditions.

While the Pre-Approved Standard Plan Program streamlines the building and safety review process, other agency/departmental reviews and clearances may still be required depending on your specific site conditions and type of rebuild. Homeowners should be prepared to obtain additional approvals as part of the permitting process.

Waiting for Soft-Story Content

LAMC requires that notices are sent to other property owners that may be affected by the request when an appeal request is submitted to the BBSC. You may attend the hearing and are allowed to speak on any case on the agenda, by completing a speaker card on the day of the hearing. 

No. The design of the equipment can be reviewed, but the approval can only be issued after satisfactory evaluation and testing of the equipment.