I think the sites and their estimates are pretty impressive considering they contain virtually every home in America, often with interior pics, but they are what they are: free tools that used automated formulas to predict something that can often be a bit unpredictable and can't fully account for the human emotional factor (for example I bet something like the Brady Bunch house zestimated far less than than its actual value)

The property has a few broken windows with boards up over them, an interior door off the hinges, rot on the bottom of the cabinet under the kitchen sink from a leak some time ago, water seeping up from the concrete in a back room making the carpet damp if it rains a lot.

This house is around 700 sq/ft with a sagging roof, 1 interior wall separating this area with the kitchen, minimal floor joists, hardly any electrical and no plumbing.

I'm an interior designer, own my own business and am just beginning the process of REI with a partner.

In terms of interiors, how much value do appraisers typically place on the finishes in kitchens and bathrooms?

I knew interior design would go a long way with short term renters.

You may see some slight variance as you move towards the outskirts of the city or as the quality of interior amenities decline. 

Go on Thumbtack (or download the App), post a job for an interior painter and then post a job for a cleaner. 

The interior of the home was in pretty rough shape but the exterior looked great with strong bones it just needed some cleaning up.

Should be a good project, if I remember correctly it had a new roof and electric service and the interior had the bulk finished, and a new second mini kitchen.