The average culprit is not an evil corporation or foreign investor - The typical tax evader in the United States is a male under the age of 50 in the highest tax bracket and with a complicated return, and the most common means of tax evasion is overstatement of charitable contributions, particularly church donations.  

Tax evasion is a serious crime and not something I would advise someone to post on a social media site.In all honesty it would probably benefit you to report it because depreciation will normally cancel out gains and may be give a bigger tax return.I am not a fan of being taxed but understand that we must all follow pay our fair share if our country is to become what it really should be.

Failing to declare income is tax evasion; failing to report an expense increases the tax owed.

Tax evasion is illegal but not tax avoidance.

Your seller may not have been interested in recording the document bases on attempting to do income tax evasion.

If they try to be evasive about when you come by that's a strong indicator.3.

If you had the work done by a corporation or you used credit card, then no 1099 is required.These rules are in place to prevent tax evasion and tax fraud.This is the IRS publication discussing record keeping:https://www.irs.gov/businesses/small-businesses-self-employed/what-kind-of-records-should-i-keepThis is the IRS publication discussing 1099:https://www.irs.gov/pub/irs-pdf/i1099msc.pdf

That being said, 24 hrs notice is all that is needed in my area if I need to get in and fix something and they are being evasive. 

@Nick CannonUsually, the less evasive you are, the better is the response.

However, the price dropped and seller was very evasive in answering my questions about how we were to share the new deal.