In your example you’re paying 89% of ARV (Price + rehab) before counting any holding costs.  

Recommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

Personally I would probably just multiple by 0.005 if you're gonna use this as I feel like Zillow always estimates low.But I personally use instant Steadily Insurance estimates inside BrightInvestor - those do vary their estimate by location, unit count, stories, year built, etc.

Manchester CT – 3duplexes, 1 quadruplex and 1 5 plexCanton CT – 1 triplex, 1 five plex and 1 six-plexSouthington CT- 2 duplexesBristol CT- 1 duplex, 2 quadruplex, 1 six-plexBerlin CT- 1 duplex, 1triplexTotal unit count: 54 Rent Role: $73 780 / month.

Simple investment mistakes don't count.

Looks legit to me - did some digging on their website and cross checking on LinkedIn.

Cross your fingers one of these has a breakthrough and comes to market soon!

TIARV Park AND Self Storage~4 acres, commercial for $120K (google maps link)Pros: In city, city water & sewer nearby, city allows both rv park AND self storage in Commercial zone, ~$50K worth of timber on propertyCons: Neighbors nearby, traffic visibility not as good here, land needs to be logged/cleaned up - not a big deal reallySelf storage constructed probably out of shipping containers~3 acres, industrial for $135K (google maps link)Pros: clear flat land, higher traffic count between the coast and I5, seller will carry loanCons: zoning does not allow for RV Park, city services unavailable

It depends on the bed count, where its located, etc. 

I never ever count on ARV.