I have clients who are interested in buying a flipped property but the investor didn't pull permits and added a bathroom.

I will need to install a bathroom.  

The rest could go towards remodeling the bathroom(s), kitchen, and paint. 

I redid the entire house (drywall, HVAC, roof, landscaping, kitchen, bathrooms, and surfaces).

We plan to take out a wall and add an island to open the kitchen up, take the carpet out of the bathrooms (yes, really), replace most of the flooring, finish the 4th bedroom and the rest of the basement, and various other minor updates.

Normally, for comparables, you want to look up recently sold properties within a half mile to a mile (the closer the better), in similar condition, square footage, amendities as the end product, and the same or similar bedroom/bathroom count.

Lots of room to add value since it has not been updated since the early 2000s (it still has carpet in the bathrooms...)

I also renovated the bathrooms and one of the kitchens. 

The house is a five bedroom could be converted into a six bedroom three bathroom house about 20 minutes from downtown near schools in a secondary suburb.

Vanities for bathroom.