Now the city or county board generally approves requests but do take public input into affect.One strategy is to ask for higher density than you really want to make the project numbers work.

Any success you have in the short term can be chalked up to getting lucky here and there (broken clock is right twice a day kinda thing).  

The reason is that in the early 90s, they started using an OSB-type material for the subfloor.Prior to that time, mobile homes were manufactured with particle board floors.

You need a 3/4" layer of plywood, followed by a layer of hardi-backer or cement board, before you thinset and tile a floor.Your subfloor ideally should be level, and at the very least, flat.Without meeting these conditions your tiles will crack.

Typically I would only use a board certified real estate attorney.2.

Maybe FRP board?

However the difference is one group is regulated and managed by a board to include ethics etc.

It might be law and there are codes that must be followed like adding "AFCI" outlets to the breaker board for every new outlet you install.

@Keegan ThompsonHey Keegan, welcome to the boards.

I am finding it tough to benchmark current conventional rates for investment property - lenders seem all over the board on this, form 3.875-5%.