What's the zip code?

I am exploring elk Grove 95757 zip code area to buy investment SFR property.

Permitting will be huge in ensuring you are compliant with all building code requirements, especially if you ever plan to resell.

Is there a certain Smart keypad or lockbox I should be using so as to change the code for each guests?

My rental property PM shared the code with a 3rd party local vendor that I am going to hire.I thought someone from my PM company will open door for the contractor but they simply shared the code.

Use a color coded sticker system to help tell which room gets which box (red stickers for your room, blue for boys, yellow for kitchen, you get the idea).

I am looking for someone who is well familiar with not just the coding and regulations in zipcode 90046 but can provide a design that will require the least number of permits and quick turn around time.   

After a couple months of him researching city codes and license requirements we were a go.

Did he actually rewire the house or just use existing wiring and bring plugs, switches, and visible components up to code?

Also, how does your insurance company feel about renting out a unit not up to code?