I know when we did spec houses, having air was a huge benefit to selling. 

You need to find out what license is required and that will tell you what steps you need to take and give you specs on what the actual house/home would require.

That seems like the "scariest" thing to get wrong.Right now I'm just using comparative analysis, this is other properties in the area with similar specs to determine the monthly rent.

You can plug in or run off the internal rechargeable battery.

Are you wanting to be the GC or you will buy from a production builder either a spec home or build job?

We built spec new construction.

If you need to fasten 2 together get the correct faster layout as per the LVL mfg specs.

well this is simple.first off in most West coast states there is no guarantee.. but you can get a pretty good idea.simply go to the county or city.Talk with planning  what you want to know is 1. zoning  is it zoned for a SFR and if so.. get the specs IE lot coverage  solar  earthquake etc.2. go to whatever department controls sewer and water  make sure there Is main lines and or no moritiums for hookups then while your at it get the hook up fees  most west coast big cities hook up fees cost more than homes in many parts of the US.. not uncommon for 35 to 100k just for hook up fees.3. close to the ocean do you need to deal with the coastal commission delightful agency those folks.5.

This would be assuming similar specs (3b/3b) and purchase price.

We have been building custom and spec homes in the Orlando area for a little while.