Keep in mind, like many things, survey accuracy has improved in the last fifteen years. 

If another heir does make a claim, you could deduct the reasonable and necessary costs of renting the property (but not the costs of improvements). 

@Evelina KhaimovaBelieve it or not, it might actually be more profitable for you to purchase a BRRRR in a neighborhood that does not have the best schools but is likely to improve in the near future.

Also, be on site to talk through all the renovations, and have a printed list of the improvements you performed.  

You can try to influence it by improving your unit(s) on the edge of a higher priced area and catch some overflow, but that's very hard to do in the middle of an area.2) HOA's typically only take care of external maintenance.

Do a cash-out refinance on the original mortgage after improvements 3.

New buildings may requires those improvements, and rehabbing may require installation but otherwise older buildings can remain as is.

How much did you invest into the house improvement-wise?

Jake, Gino, and their staff are far different than other educators in the space, and truly care about their students and network, and it shows from the quality of the people around. 

You might get the rating improved, maybe even to the point that flood insurance is not required.- Pay to raise the house up on pilings.