I'll look into that, Judy. 

@Judy P. holy cow!

@Judy P.

It's not that I've lost motivation I'm Judy having a hard time staying focused on getting started but I know once I start I'll be good

Those who have been in the game, played their cards right, & weathered the storm are going to put their collective feet on the gas and do everything they can to get filthy.

Judge Judy says, "Guilty!"

Judy,Thank you for the response, I appreciate you letting me know this.

Judy Murphy

They are usually done by a block method using square feet, they don't have time to look at each property so if you bet on that value, you'll be wrong, it's apples and oranges.If you don't know what value is based on and the 3 approaches used, you're not even in real estate, you might be playing some guru game playing house like a 5 year old girl, just trying to play with bigger houses.

If you can find out if the back unit is legal as @Judy P. said then it may be worth pursuing after having a Contractor look at it.