Do I need to get a permit for flipping in San Jose?

[Sharon Wu]

We start our first flipping project in San Jose, we will hire licensed contractors to apply for electrical and HVAC permits. However, we are debating whether we should get the permit for remodeling as well. We need to open an unbearing wall for the kitchen and break the closet wall to expand the master bathroom space, then other works are just cosmetic. With the permits, city inspectors could make sure contractors' works meet the code, which will make the selling process more smooth, also would there be any legal issue flipping house without a permit in San Jose ? Thanks for any advice : )