They are zoning and land use regulations, accessibility, environmental factors, market analysis, topography and terrain, utilities and services, neighbourhood characteristics, restrictions and opportunities, development feasibility, financial analysis etcetera.

Be sure to check local regulations regarding short-term rentals as well.

I get that there are regulations by the municipal, but are they so strict that certain builds aren't allowed throughout a whole state?

Short term regulations are becoming more and more restrictive here so we are looking to purchase outside LA County and invest in Riverside, Ventura and/or San Diego county.

Additionally, be aware of any specific requirements or regulations related to accepting vouchers in your area.

Lender options vary by state due to state regulations- these type of programs are available in many states. 

They passed new loan regulations where I only need to put 3% down on owner occupied 2-4 units, which is where I plan to start.I do have skills.  

Pricing is typically based on loan volume.These solutions will help with automating tasks related to complying with your state's regulations around private lending.

Roseville and Rocklin are great areas for long-term stability and growth, but the prices are quite high and the rents are LOW, and they're not friendly in terms of regulations for STR. 

Furthermore, what are the regulations regarding security deposit?