Maybe I'm over thinking this but I think it's a wide spread per door.  

This is a very widely discussed scenario

@Mandy Jay your question is extremely wide open. 

I currently own a single wide sitting on about 1.2 acres of land.

The analysis is beyond the scope of this post, but if you email or contact me directly I can do one for you and let you know if it works.The other widely used method to determine if your paying too much or not is to use the comparable approach and find the average price per unit value for that market and submarket.

It is a smallish group, and as a group people are quite active and have a lot of experience in a wide array of real estate. 

Many of you may be going into your first rehab projects with eyes wide open and are thus well aware of these additional costs.

I'm a professional in short sale processing and I would like to expand this from Arizona to nation wide business. 

I like casting a wide net vs using one or two methods exclusively.Happy hunting!

For examples, The big banks all have mobile apps, country wide branches and superior 24hr customer service.