This is as far as I've gotten myself.I am about to call city for more info on the lein, owed taxes, water & sewer companies as well for balances.Any other suggestions?

They're happy right now, did it because they want to keep their home, and are usually under water.

I have all the calculations in place to have all the necassary payments such as mortgage, taxes, insurance, management company, and water.

Is this park on city water and city sewer?  

Hopefully you dont have LP siding since I've seen it commonly get water logged and start to split at the seams.

The numbers are as follows:Sales price: $115,000Insurance: $452/yearTaxes: $1252/yearUtilities (gas, electric, water, sewer, trash) (Unfortunately two of the units share a meter, so these are paid by the landlord for simplicity sake): $300/monthRents: $1645/monthThe roof has been replaced within the last year.  

Additional expenses paid by you for the   rental portion of the mutiplex can be written off (i.e. garbage, utilities, water, garbage, repairs, maintenance, etc)5.

I am afraid my deal is too thin,  my budget is $50k for kitchen , 2 bathrooms, deck, refinish floor, whole house painting, simple landscaping, new  furnace and water heater, and some electrical and plumbing work. 

I recommend that anybody who is a landlord of property in Philadelphia should join HAPCO; HAPCO is a landlord organization that happens to offer the services of an eviction attorney at reasonable prices.And regarding utilities - in Philadelphia PGW (natural gas) and Water Revenue Bureau can bot place a lien on a property if those utilities go unpaid, even if the lease requires that the tenant make those payments.  

The previous owner used it for illicit activities, and was a general menace to the rest of the owners and tenants.The bulk of the work is in the bathroom, with water damage to the sub-floor, and a bathtub shower combo which was full of mold/mildew.