Basically it appears you are trying to convert a duplex to a triplex. 

There are many hidden ones on the mls that are overlooked with wet bars that can be converted or in an area that can be rezoned duplex. 

It needs to be converted to a 2 family but due to no off street parking it will require a variance, blue prints, survey, and an engineer in order to have a chance at converting it.

This is currently rented as a single-family home and my idea is to convert it into a duplex (zoned for duplex).I owe $130K on the mortgage but will need around $350K to convert.

@Cassandra Sifford In the management game, when you give people an inch they’ll try to take a mile.

Purchase price: $135,000 Cash invested: $50,000 Sale price: $293,000 This was not expected living flip in progress during first 4 years working full time job.What was done:- full kitchen remodel- replaced all plumbing- new duct work with insulation- relocate and redesign fireplace- full 1st bath remodel- add 2nd full luxury bath (double shower, bidet, radiant heat)- convert sun room to 4th bedroom with radiant heat flooring- replaced all windows- upscale woodwork inside- repaint whole house inside and outside First 4 years forced equity and another 4 years market bring us another surprise with icing on the cake (market going up).This year 2019 decided to cash out hard work and moved out from IL to another state TN.Planning to fully enter real estate game here in Knoxville/Maryville TN area.Currently looking for my primary residence here using cash out from IL.

Purchase price: $135,000 Cash invested: $50,000 Sale price: $293,000 Living flip working full time job-full kitchen remodel-replaced all plumbing-new duct work with insulation-relocate and redesign fireplace-full 1st bath remodel-add 2nd full luxury bath (double shower, bidet, radiant heat)-convert sun room to 4th bedroom with radiant heat flooring-replaced all windows-upscale woodwork inside-repaint whole house inside and outside First 4 years forced equity and another 4 years market bring us another surprise with icing on the cake (market going up).

Purchase price: $135,000 Cash invested: $50,000 Sale price: $293,000 Living flip working full time job-full kitchen remodel-replaced all plumbing-new duct work with insulation-relocate and redesign fireplace-full 1st bath remodel-add 2nd full luxury bath (double shower, bidet, radiant heat)-convert sun room to 4th bedroom with radiant heat flooring-replaced all windows-upscale woodwork inside-repaint whole house inside and outside First 4 years forced equity and another 4 years market bring us another surprise with icing on the cake (market going up) Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Purchase price: $135,000 Cash invested: $50,000 Sale price: $293,000Living flip working full time jobfull kitchen remodelreplaced all plumbingnew duct work with insulationrelocate and redesign fireplacefull 1st bath remodeladd 2nd full luxury bath (double shower, bidet, radiant heat)convert sun room to 4th bedroom with radiant heat flooringreplaced all windowsupscale woodwork insiderepaint whole house inside and outside First 4 years forced equity and another 4 years market bring us another surprise with icing on the cake (market going up)Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

So I am curious what are the costs that are associated for converting these over to sewer and public water?