Most of the regulations are regarding the building height and lot dimensions, which wouldn't change.

My friend has an existing business/LLC and we are combining/adding dimensions to that existing business to form a new one.

I can't imagine it being a huge deal, the county already ready shows deck in the original build and we will only be removing the old deck and rebuilding it with the same dimensions. 

., min dimension of 7' is an IRC requirement, but that's a pretty widely used code. 

Modular is great in places where labor costs are high, and maybe if you're building to the dimension of shipping containers/trailers so that it can be easily transported and pieced together.  

The dimensions given are all liner, 30 feet X 24 feet, that must be converted to VOLUME, 6 inches thick because concrete is sold by the (cubic) yard.For practice ask an agent, or a friend for a copy of a filled in contract and executed HUD 1.

The window style that meets egress with the smallest overall dimensions is a tilt-and-turn style window: window tilts in like a hopper window for ventilation and swings inward like a fridge door for egress.

Dimensions- 8 wide by 20 long. 

Fir Cedar and on the east side of the moutains Pinesome hard wood but mainly alder with a tiny bit of Oak.. nothing much else in Hardwood.So we of course have all the big dimension stud lumber mills.. they all have log buyers.. so we contact a log buyer to get their delivered log prices.. then we know that we can log for about 250 per MBF camp run to the mill.And then we know for example right now domestic fir is bringing 800 per MBF camp run which is pretty much an all time high... so we know there is a 550 delta.. now then you have stumpage.. the land owner will want a stumpage price for the logs which is generally about 200 to 300 per MBF  leaving a net profit of 200 to 350... now some will do all this for a 50 to 100 MBF net profit.. just depends on the stand.. 

A good item also is an existing floor plan, it will cost you time and a tape measur, but it will save you a lot, once we don't know the dimensions, we add a couple of percent allowance in order for us not to underbid.