What if someone breaks into the property, or neighbors make it undesirable as a place to rent?

Fitchburg has very attractive prices, and rents may "look" promising, but Fitchburg definitely has quite a few undesireable areas and the tenant class could be quite challenging. 

What I consider a bad area may be "undesirable" in your book.

It is recently remodeled house including a new deck, tiling, carpet, and a mud-room addition.

Those are the sorts that think in terms of their mindset and if they are an above-average investor.For me, I'm a bit deeper in the mud. 

Gentrification is permeating across the Bay Area and area's that use to be undesireable are becoming more desireable because of affordability in certain area's which increases property value.

He also replaced all the sheetrock & mudded it, (he doesn't sand it he just sponges it smooth).

I used to own two of the "undesirable" businesses.

I worked with drywallers that only charged for labor and I had to purchase the drywall and mud.

This I estimate would be able to be fully updated cosmetically, with the addition of a master bath where currently there is a laundry and addition of mud room/ laundry off garage and one additional bedroom in basement.