If you can locate a house with a decent size lot 7000square ft or more and within a mile of public transportation you can forgo adding more public parking per unit.

These expenses include, a new roof ($4,500), a paved driveway/parking ($3,000) a privacy fence to enclose the full property ($1,100), and I have been recently toying with the idea of digging out the unfinished basement and converting it into a 4th bedroom, storage, and a den which will cost around ($10,000).

The property is adjacent to Arrowhead Towne Center in Phoenix, near shopping, restaurants, transportation corridors, corporate headquarters, three hospitals, sports venues (MLB spring training, State Farm Stadium, others), and snowbird housing from Oct-Mar. 

But our back yard is not enclosed and joins other property as the tennis courts are behind our townhouse.

Maybe a slab Up next to the foundation with an enclosed lean too type shed room with electric heat and its  own Hot water tank???

This was supposedly a safety issue; the meters have a pressure regulator that in the case of really excess pressure can relieve pressure by a slight discharge of gas - not a safe thing to do in an enclosed space.This year, the very same house, the gas company had to put in a new gas line from the street to the house due to a new higher pressure gas main being put into service.

As for converting the backroom/sun room it is an enclosed space of ~600sqft. 

. - $80,500 renovation cost - New Heat pump, electrical wiring, plumbing, enclosed carport to add laundry room, master bed room and bath, refinished hard wood floors, new roof, new appliances, new siding, foundation, septic, driveway and much more, almost new home. - $99,000 total investment ($66/ft)ARV = $150,000, Rent $1250-$1350/mth I determined the move home would offer better long term value and higher quality.

This is because of the water park they can enclose for year round usage.

There are some great aspects of investing in Melbourne, such as jobs and proximity to transport, the infrastructure and so forth.