The deal involves buying an existing single-family house for $700k that conveys with a vacant lot.

When a person who has entered into a written contract for the sale and conveyance of an interest in real property dies before its completion, the executor or administrator of the decedent's estate, if not required to otherwise dispose of the contract, may, with the consent of the purchaser, obtain authority to complete the contract by filing an application for that authority in the probate court of the county in which the executor or administrator was appointed.

Than, get down at 20% mark and charge added premium of say 15%, but point is that down covers your cash outlay 100%+. now your monthly payments are based upon that higher sold price so even if conveyed at rate you have there is still a nice profit margin right there. 

Or can you convey that original acquisition of this right to collect the delinquent taxes, which you then effectively exchange for the Deed if the redemption period has not been executed - but kept the same holding period?

I conveyed with a hybrid contract for deed which put title in the buyer's names, but I remain the legal owner.   

As a listing agent with a duty to the seller NO I do NOT have any requirement to additionally convey ANY service to you a potential buyer what-so-ever INCLUDING screening of any kind.

fraudulent conveyance or fraudulent transfer;b.

Hard to know for sure as the loan officer was clueless, he did not seem to understand what the underwriter was saying and was only able to convey "notes" from the underwriter.

They worked as a team in this entire thing.So here we go...A person sold a piece of land 3 years ago, reiterated in the deed "this conveyance is made subject to the restriction that no mobile or manufactured homes shall be placed upon the subject property." as the restriction had been in a previous, distant deed.

If the successful bidder assigns his interest in any real property purchased at the Delinquent Tax Sale before the end of the redemption period, the grantee from the successful bidder shall furnish the Tax Collector with a conveyance, witnessed and notarized, a copy of the bid assignment form may be obtained from the Tax Collector's Office.Bidder checks (for the bid amount plus interest) will be mailed to the successful bidder, or their grantee, once a property has been redeemed and funds have been verified by the Tax Collector and pay periods have been determined.