Building Plan Check

Step 1.Start with Building Plan Check if your residential project is included below

• Remodeling, interior of single-family homes, with structural alterations
• Windows, retrofit with no change to the number, location or size of openings

Step 2.If required, be sure plans have been approved before submitting

Planning approval is required for many types of projects prior to submitting to Building Plan Check and construction permits are required afterwards.

The majority of projects must be submitted online through the BSOP system. However, for some simpler projects, you can come to City Hall between 8:30 and 11 a.m. for help, but please call ahead to be sure.

Step 3.Submit plans to the BSOP system 

Once you have Planning approval, you may submit your plans to Plan Check. 

If you have questions about building plan check, call 562-866-9771, ext. 2354 or email wspoja@dpw.lacounty.gov.

Please note that certain projects may require approvals from various agencies which may include a separate plan submittal to the Department of Public Works Headquarters in Alhambra. A detailed agency referral sheet will be provided to you once you have submitted your plans to BSOP.

Your plans must be submitted electronically through the Los Angeles County Department of Public Works Building and Safety Online Plan Check (BSOP) website.

See the instructions posted under "Related Information" on this page to help you with the process.

Step 1.Commercial projects that begin with building plan check

• Fire sprinklers
• Signage (interior)

Step 2.If required, be sure plans have been approved before submitting

Planning approval is required for many types of projects prior to submitting to Building Plan Check and construction permits are required afterwards.

Submit plans to the BSOP system

Once you have Planning approval, you may submit your plans to Plan Check. 

If you have questions about building plan check, call 562-866-9771, ext. 2354 or email wspoja@dpw.lacounty.gov.

Your plans must be submitted electronically through the Los Angeles County Department of Public Works Building and Safety Online Plan Check (BSOP) website.

Please note that certain projects may require approvals from various agencies which may include a separate plan submittal to the Department of Public Works Headquarters in Alhambra. A detailed agency referral sheet will be provided to you once you have submitted your plans to BSOP.

See the instructions posted under "Related Information" on this page to help you with the process.