Best way to calculate ARV when I’m adding 692 sqft livable space

[Coretta Tillery]

I'm doing rehab on a duplex where I'm adding 692 sqft of livable space. I'm trying to identify an estimated ARV. Should I use comps in the area as a ballpoint or are their other useful strategies?

[Taylor Hudgins]

Hi Coretta!  Adding 692 sq feet is amazing for any home!!  I would try to find comps that have similar details to the property once completed including # of bed/bath, square footage, similar neighborhoods, etc.  Depending on your duplex, you may be able to increase your rental cash flow as well if you add another bedroom to your units.