The county health department has no records of there being a septic at all (i assume due to the age of the house, or possibly just not getting a permit).

This condition has probably existed for many years and I bet neither the fence or shed are permitted installations.

Don't go for the custom turtle or whale tiles in the shower that you love that might strike someone else as cheesy.

For example, if you were building a custom home for $100/sqft 5 years ago, what might that look like for you today?

You will want to make sure it's zoned and permitted too.

I found out by calling their business customer service and getting the skinny from reps.

In my version of all this, I like to land on a rehab once I already have a buyer picked out an prequalified and I know where they want to buy and I can walk a deal I have under contract and do a scope of work and upsell the cabinets,floors etc (manage costs) and the potential buyer is excited about moving into a customized new home instead of a used home. 

Others will use RLV, but in this post, you have the formula, so whatever method they use, you (or your broker) can do the math for yourselfSo, the general formula would beSales price of home - (minus)Build cost of home, including hard costs and permit fees -Profit (can range anywhere from 3% to 15% depending on what builder, larger/nationals will usually have lower profit margins that they make up with volume) - Finishing costs of lot (per costs above) =Residual land value (RLV) or raw land/raw lot costsNow a few questions/comments/rules of thumb to use:1.

FYI - Series LLC are not permitted under the FL LLC Statutes.

Tiny homes can cost more than average size homes after customizations.