The following are the email from City Building Department:
If you are building a wall using drywall to divide your living room you will need a permit and an inspection.
Please submit a permit application and plans drawn up and stamped by a licensed CA contractor.
Inspectors will want to see the framing, the material, and how the structure is fastened at the top and bottom.
If your property is a condo you will need to provide a copy of the approved design plans from your HOA.
Please click this link to access the main permitting information page from the city website
https://www.cityofirvine.org/
- Scroll down to Apply for a Permit
- Select Residential
- Select Interior Remodel
- Please review the information, some may not be relevant to your project type.
- Links to the permit application, a tutorial showing how to create an online account, and a link to the Irvine Ready permitting portal are provided.
After that, I asked again “whether licensed Civil Engineer" could be the one review and stamp the plan? Their answer is yes.
So, if you have a licensed Contractor, or a licenses Civil Engineer to help with the plan, you can put the dry wall. BUT, permit needed and City will have someone to do inspection.