So you’ll have that much more tax-sheltered rental income, which is always a good thing.The bottom lineAs you can see, the tax rules for vacation homes are complicated.If you have a vacation home that is rented for more than 14 days during the year and your personal use does not exceed the greater of (1) 14 days or (2) 10% of the rental days, the home is classified as a rental property for tax purposes.

If it is an ex boyfriend or he is showing up unwanted by the the tenant it might just be classified as vandalism, because at that point the tenant has no control over the boyfriend.

If you go to the Real Estate Classifieds and under that tab there is another called Real Estate Events & Meetups.

What is the trigger that allows me to officially claim property B as "Primary residence" and how can property A be re-classified as "Investment Property" for the sake of IRS/legal/1031?

Some are classified as absolute, meaning the property is only sold to the highest bidder regardless of the property’s market value.

I know neighborhood grades are subjective, but I generally classify them by tenant quality, rents, and home prices.

I definitely would classify as C- and D as well.

How is it classified if you build a house new construction, live in it for 2 years then sell it?

How would you classify the area? 

Don't know of any that will provide a mortgage, mostly personal loans unless it is not classified as a mobile home.