We replaced the old roof as part of the project and had the interior walls primed (with Kilz) and painted. 

It would likely depend on state regulations that may dictate whether an owner/operator could live under the same roof as residents ( a casita or guest house may solve that issue).

The house needs a roof and potentially a new septic system installed which they also considered. 

Hey guys i need you help here and i need some of your experience pls...I'm on contract of my first brrrr with hard money loanAnd i want to know thatcif i change the roof now and fixing the crowl space That will cost me to do both of the things around 20k I running the numbers and i can get the arv that i need buy my question when the aprizel coming after we finish to renovation the house with this to major fixing issues that he coulcaite with this 2 major fixing to his numbers for the arv or not ?

It appraised at $553k and the inspection showed lots of minor to moderate deferred maintenance, mainly needing a roof and some foundation repairs and a few water leaks inside that need addressed.

My current primary, which I have been in since last October, is in need of a new roof.

I repaired some interior work costing me about 7k and the roof which is about 18k. 

A roof on a typical duplex may cost $8k to tear off and replace.  

Feels like a steep price for tenancy and good visibility. 

Even had a brand new roof and young HVAC.