We would hold ownership of the units and service them when needed. 

How much electrical service does each unit have?

I own a small construction company where I provide all types of services but am focusing on flips right now.

Not only will the bank give you a hard time about the knob and tube but you will also have a tough time with Insurance companies. a new 200 amp service will probably run you about $2- 2400, rewiring the house, sheetrock, spackle and paint will probably run you another $4-5000, depending on how much has to be opened up and fixed.

Hi,Our wholesale company is looking for an investor friendly broker to form a partnership with.More or less you'll be listing the investment homes on MLS - We grab off market properties and bring directly to you for listing.I realize there are several companies who provide exactly this service.

This is what you can do , leverage that 500k windfall that you now have , look at getting 3 duplexes in the 550k range, put 25% down on each , a mortgage of approx. 400k won't be unmanageable , hopefully after debt servicing and operating expenses, your net should be about 1k on each , and if you can manage these yourself maybe you can maximize your return.

Default tenant that owes several months back rent has finally moved out and my mom who is the new new owner (brother died and left house and assumable mortgage to her in his will) is trying to get gas service but the gas company says service is still active and past due balance under tenant's name.What is the best resolution?

...or through a service online like auction.com?

We were happy with the service.

Otherwise a licensed HVAC contractor will have to do the rest of the work