I have a triplex with 2 gas and electric meters.  

One thing to look for is whether the units are separately metered for electric - if they are then the conversion was probably done above board.As far as location thats going to depend on your budget.

, electric meter?

Our ADU is separately metered for gas, electricity and water. 

While Greece is generally still cheap compared to other European locales, partly as a result of the Global Financial crisis, real estate on the most popular islands like Mykonos, Rhodes or Santorini is actually very expensive - as much as 10,000 euros a square meter.

You can subdivide utilities, but this will likely involve new meters and full house replumbs/ rewire.

I'm looking through the spreadsheet and I think it's worth mentioning that it's possible to spend a lot less for certain material items as well as labor in many cases depending on how frugal you want to beinterior door with hardware: $5-10 used, $30-50 newwindow: $10-50 used, $100-200 newlight fixtures: $1-10 used, 6 pack flushmount at lowes for $44fan fixture: $24-60 new water heater: $250 newtoilet: $50-90 newsink: $40-200 new faucet: $10-30 newtile: 0.49-2/sqft newappliance: $20-200 each appliance usedmy last rehab was:60 elec permit cost + 300 elec repair (tenant destroyed meter box causing house to be condemned)1600 material + 1500 labor flooring for 1400 sqft500 material + 600 labor spray paint whole house semigloss and patch some large holes$30 for 4 interior doors which I put in$10 mirror for bathroom$100 paint porch, stairs, and stair rail brown$50 fridge, $10 burner plates for stoveI also spent at least a few hundred with help on cleaning and taking out the trash and some other expenses here and there which altogether added up to about 5 thousand.I spent maybe 30 hours over there in total on the weekends.

It won't show up on your water bill because the leak is before your meter. 5.

I can learn how to put in meter bases and multiple circuit boxes in my building and learn how to do it, for a $500 consultation fee plus parts.

(edited)This will affect investors with separate metering for little used units or devices like pumps or EV charging.... even if you have excess solar generation or whatever the bill charges will still apply.