I wouldn’t worry about it, especially for a countertop that’s installed that way in a million other houses.

Less expensive materials, but more expensive to install the ductwork.

The home bed the following repairs;New doorsNew windowsFresh paintRefinished hardwood floorsNew central airBlock off doorway connecting two apartmentsLegally change zoning to 2 family2 New fridges 2 new stoves 2 new washers 2 new dryersNew bottom cabinetsNew countertops Install light fixtures in each roomReglaze tubs Replace bathroom fixtures Install sub panel for 2nd unit which previous owner removed.

If you have natural gas you may be able to get each one installed for less than $3,0000.Another choice, if you have natural gas, is to install a hydronic baseboard heating system throughout the entire house.

I'm also confused on the "brick foundation" concept as mobile homes (even those surrendered as real property) are still installed like mobile homes on concrete blocks and not stacks of bricks.To make this deal work you need to look at the total real property income (in this case the four homes as rentals) and not put any additional value in the potential of the four additional homes as I'm sure the city will probably not let you add them unless they are in the original lot count for the park (as evidenced by the Certificate of Zoning).

He installed new windows in every unit without permits and he puts a trash bin in the street without a permit.

Give the tenant keys A and B, but keep key C to yourself.Another option for the mechanical locks is to install the kind where you can swap just the cylinder from the front with a special key. 

Upon my visit, I know the house needs wall repainting, replacing bathroom tiles, installing 3 doors, and renewing kitchen sinks.I am very inexperienced when it comes to these fixes and def want to avoid all of that work myself. 1.

Hanging cabinets, installing countertops and sinks don't need a permit.

and finally If your roof does not have drip edge or ice guard on it will they they pay to have it installed on your new roof?