They are very good tenants they asked for permission to buy them before they where delivered.

You could structure it contingent on the property be delivered vacant OR delivered with the current tenants paying market rent.

If either of these were addressed in the agreement, send/deliver a notice of violation per local law and the terms of the agreement.

If you don't use leverage, its very tough to deliver attractive returns to investors.

I'd like to buy new so they won't require much maintenance in the future plus can be delivered/installed. 

. -40-10-197 (d)(1) In a tax lien foreclosure action, if the court finds that the tax lien auction or sale is valid, that proper notice has been given, and that the tax lien has not been redeemed, the court shall enter judgment foreclosing the right of the defendant or defendants to redeem and shall direct the circuit clerk to execute and deliver to the party in whose favor judgment is entered a deed conveying the interests of the defendants in the property described in the tax lien certificate. (2) After entry of judgment, a party whose rights to redeem the tax lien are foreclosed has no further legal or equitable right, title, or interest in the property subject to the right of appeal and stay of execution as in other civil actions.- After the foreclosure suit and you receive the deed, the property title has been quieted and the property is insurable by title insurance (correct ?)

As of March 1 I have had to ask for them but they have been delivered promptly.

To establish Buyer's creditworthiness, Buyer shall deliver to Seller within days after the effective date of this contract,  credit report  verification of employment, including salaryverification of funds on depositinfinancialinstitutions  current financial statement and .

You can give them deposit slips for each month and they deliver payment right to the bank.

They wrote the contract in general terms, so they can get away not delivering from what they promised in the meeting.