When I tried to get it when my side of the family found out and tried tp take over reverse mortgage payments to bank because she had died it was to late so they sold the house to Hud and then other reverse mortgage companies but a relative still lives there so they can't kick them out.

I am specifically looking in Essex county, MA because I want to house back close enough to my current W-2 job.

However, there aren't any comps of new construction in the area beyond land sales on brand new neighborhoods, and existing sales of older 4 / 2.5s are in the high 200s.

We also do a property orientation and show them how to operate the house, change filters and batteries, turn off water main - and of course the mystery of GFCI outlets

Only in this house your mom happens to be the tenant. 

For example, houses where the homeowner needs help and may consider selling to me. 

The reason to have comparables is if you are representing someone or perhaps purchasing a house for yourself to live in.

As far as I know, appraisers do not include the total square footage of an ADU when appraising a single-family house and an ADU on the same lot.

Purchase price: $110,000 Cash invested: $30,000 Hobby Farm On 10 acres2300 sq ft house with 8 out buildings - Large Barn, Animal/hog barn, Mid-size machine shed (2) 25' x 35' / 30' x 50', Large Machine shed 60' x 60', Grainery barn, Entertainment Barn, 3 car garage What made you interested in investing in this type of deal?

@Adam Luepke - Great first house hack!