Many other landlords in the area are billing back gas(which is the most expensive, it's $3200 per year for this little quad), water and sewer, and even electric.The house is old, like 1876 old, and I am looking for recommendations on different submeters that I can put in to bill the utilities back to the tenants! 

Third assumption: you will be using the work truck exclusively for your rehab projects.Then, if you really made a substantial net (meaning - after all expenses, including marketing and overhead) income - you should be able to deduct the entire cost of the truck and the trailer, plus the costs of operating it: gas, insurance, maintenance and such.But since my assumptions could be wrong, and there're other factors we have not considered, my answer is tentative.

Check with the city or county planning and zoning department to get an idea of what you can build and what is required for all approvals including site plan and building permits, proffers, water/sewer tap fees, bonding requirements, inspections and CO process and time frame for all approvals.You also need to check with the utility companies and get an idea of availability and cost estimates from them for water, sewer, power, gas, cable, installation and connection requirements, tap fees, hookup charges, transformer location and relocation, power line and power pole relocation issues.

And if you are at the point where you are selling so many properties that the 2-3% it costs you on the seller's agent side is a significant amount of money, go get licensed yourself and sell your own properties and stop paying anything (except for E&O insurance, staging and photography costs, MLS fees, gas, mileage, and all the other costs the agent is covering in that commission, of course).

I was thinking a shopping center with liquor store, nail shop, restaurant or a convenience store with gas station (possibly), or a large daycare. 

@Jan Kerr I work for an electric & gas utility - I catch people stealing electricity and gas through data analysis and leads followed by physical inspections & testing.

When food or gas or anything we need goes up, people have been conditioned to believe its a "good economy" when in fact all that means is the government gets richer, by collecting more tax. 

There's a shelter, methandone clinic, 24 hour gas stations and McDonanld's, foot traffic and vehicle traffic 24/7, BMC hospital, Fuller mental health building.

Some have separate gas meters and None have separate water meters.Typically, with multi family properties each unit is metered (electric) separately and each unit pays their own electric.

How difficult and expensive is it to convert a propane stacked dryer to natural gas?