Our all in construction was $360k (If we had to do it again, we wouldn't spend the $10k to install the fence where we always do for our other investment properties.

Also consider your lifestyle and if you want to be traveling 3 days just to check to see if a water heater is installed correctly and your property manager is looking after your property.

If you're on city water, they may or may not install another meter. 

For example, if I want to install new plumbing in the bathroom because the old one is old and broken, would I need a permit to do these fixes? 

The type of heater installed is a baseboard heater, which heats up slowly and is designed to run consistently for optimal performance.

We had two others installed later to divert water from coming downslope into our yard to protect a drain in front of the garage.

He received quotes to remove the texture ceiling, paint the interior, purchase and install new kitchen cabinets and counters (including completing the design), picked out 2 floorings to get quotes which will be provided this week, and determined furnace is beyond saving (I will likely get HVAC quote for him).  

We went all in on renovations—tore down a chimney to open up the space, put on a new roof, installed HVAC, updated floors, and completely redid the kitchen.

I'm actually interviewing PMs and CO Hosts this week, and Handyman for installation of all the furnishings set to show up at the property in January. 

I thought  @Elliot B. was talking about installing meters on the supply and return pipes for each unit and measuring BTUs there.