Oh, and we actually don't have any common space registers in our building.From the quotes I'm getting that separate systems configuration is going to cost us almost $30k all in, which is over twice the price of replacing the boiler and 4 individual hot water tanks with a single system. 

We have re-configured the floor plan, fully updated all of the finish-outs, fixed the foundation, roof, fixed the concrete, and put in a new AC unit and moved it to the attic to have more efficient use of the square footage of the house.

Also, the repairs & maintenance, insurance and CAPX exceeds typical % rules of thumb because 10% of a small number isn't enough to pay for a roof, HVAC, etc. and those costs are not cheaper in a cheaper house.I assume you are planning to self manage, but I would call several PM's and ask them their opinion on market rents at that address and for your configuration.

What is nightly home rate for configurations having same number of beds/baths as yours?

Business entities, most of the time people use LLCs in various configurations.

Brand new 27inches wide with an electric glass cooktop & an oven, same configuration.

I do plan to switch to a pitched roof when the time comes where patching and painting out weighs the new roof configuration.

We're working through what the most advantageous configuration is.

This scares off a lot of people so be aware Just need to shop around for a great contractor and ask for referrals to not get screwed over Mold Try to figure out where it is coming from so when you get the property you can eliminate it Mold comes from accumulated moisture Be careful about mold in the basement, there may be a leak in the foundation Compartmentalized configuration By removing a wall to open up the kitchen it usually makes it more appealing Landscaping If the yard looks horrendous, there is a lot of opportunities there JUNK Lots of junk discourage a lot of buyers when it's pretty easy to clear outThree Problems I Avoid When Shopping for a Rental Property Neighborhood Don’t buy in class D areas.

Rehab are pretty much set for the typical rehab you will be doing.  1 - Kitchens = There are only so many kitchen configurations.