Perhaps it makes sense for your personal situation, but I use my cashflow to purchase other properties, tools and equipment (such as a lawnmower) I need to be successful. 

If another agent gave you the data, depending on the form in which they did could have violated their terms of servicePast MLS data diminishes in value by the day as one needs up to date information

For example, $200 a square foot would be $60,000 in value so it could be significant.

I'm envisioning putting in $25k worth of materials, which would give me new floors, new bathroom, new kitchen, expanded rear deck, drywall in almost the entire house, and updating HVAC and plumbing - this doesn't include my labor of course, but I work remotely, and July through October is my slow season, so it kinda falls into the perfect "pack the dog & your tools and go up to the house for 2-3 weeks to get some work done" calendar for me. 

I think you'll find this interview invaluable: https://carrot.com/blog/negoti...

Assume the house is valued at 1,100,000  and the FMV and AVR are close in value, and you live in California; The taxes would eat up a lot of the value of the prize, unless.....?

Based on the market and the improvements I would bet the property has increased significantly in value. 

Any scarce item has greater likelihood of increasing more in value over time.

And of course many of them fell in value after 08..

DM ME and I can share with you some models and analysis tools we use when underwriting a deal.