Examples of qualified improvements include additional square footage, fences, or landscape improvements.

And square footage of today's homes is substantially larger than the average pre-1990 home that REI typically place into rental service.

Footage on the rehabbed units varies from ~700' to 1240'.Good luck.

There are many aspects to market value, like square footage, # of bedrooms and bathroom, quality of building material, parking spaces (if any), types of amenities, quality of the view, and overall supply versus demand.

I'm guessing it will cost me about $250k in additional square footage and construction costs to add a pool and I'm estimating an additional $50k a year in revenue. 

I did a 6 unit refi with Marquette Bank5/25 @ 4.125   But that was 6 mts ago.

So if you accidentally offered based on it being a duplex and it turned out it was/is a SFR, then its appraisal value will be based on PERMITTED square footage and use.

My neighbors are paying like 1500 less in taxes but it might be based on square footage. 

The "portable" or Micro units that Trachte makes would likely get you past any setback issues but they will cost a bit more...probably $300,000 for the same square footage.

He said some of the properties are townhomes so the square footage of the lawns are small, which he can cut in 10 minutes or less.