Though, that would probably be a similar cost to the above ground pool. 

Any idea estimate on cost? 

Unfortunately, this costs $$$ that you shouldn't have to spend.

Midwest has inflated over the past 5 years (as everywhere else), indexed to cost of new construction.

They’re a fraction of the cost and packed with valuable insights.

Also make sure you are comfortable with some holding costs if the units don't get rented right away (if vacant).Also look into if there is rent control in the area that the property is located.

And while yes, no one has the same pricing (combination of factors), I also continue to check on a regular basis our rankings and how we "present" on total costs per stay vs. our competitors.My gut says there is price creep and we might have a ways to go before the market really corrects.

Do they value nicer finishes and design or is that additional cost lost on the typical tenant in that pocket?

You cannot deduct your rehab costs until the property is in service. 

Also accounts for mobilization costs (e.g. lodging for field team) and shipping costs for materials.