heating oil tanks are NOT regulated by EPA. you have to look at your state cleanup standards. 20,000 ppm is significant but the good news is that heating oil tends to be very viscous (unless you were using no. 2 oil) so it may not migrate very far. the cost dramatically increases if you have groundwater contamination and the groundwater is used for drinking water. you need to engage a environmental consultant, not a tank contractor.

Otherwise quality of life has improved dramatically.

Hypothetically, I could purchase a house/condo around Boston, but purchasing here is dramatically more expensive than renting in terms of monthly expense.

There can be a dramatic change in rent from one neighborhood to another.

My market is dramatically less expensive to enter, but hopefully, at 5% down and something in the suburbs, you can pull something off in not too much time? 

Do you think the impact would be as dramatic as the 2008 crash if at all? 

The irony is I've scaled to larger than I ever would have been able to on my own, and my net income and net worth have both increased dramatically as a result.How much did you save? 

I may try to buy a 5 or 6/7-unit building, but not if the loan terms are dramatically less favorable. 

This will dramatically increase your chances of finding something that suits your needs and maybe even something below market value.

That being said, if the crime rate is currently high, but it is going down, dramatically.