Frequently Asked Questions (FAQ)

I am planning to convert a closet into a bathroom and add a small addition to my home (about 400 square feet). Do I need a building permit, and if so, what is the procedure to obtain one?

Yes, you do need permits (building, plumbing, electrical, and possibly mechanical) to modify a room or build an addition to your home.

The permits may be obtained from the Building and Safety District office which serves your area. For a list of LA County Building and Safety Offices, please visit where all of the addresses and phone numbers of field offices are available.

The process of obtaining permits for this type of work is relatively simple. One of our plan check engineers will do a review of your plans, which normally can be accomplished while you are completing the permit applications (a 15-30 minute process at the Building and Safety District Field Office). Once the plans are approved and permits obtained, you may begin construction. There will be required inspections at certain intervals during the construction. The office staff can advise you as to when these will need to occur.