There is no statute prohibiting it.

For example, you must calculate the 3-days (or 5-days) correctly and include court holidays, or reference specific statutes and post the notice or hand-deliver, etc etc.  

Note - rules change so look for the 2016 form when it comes out.2015 Linn County Basic Rules of the Annual Tax SaleIf this is your first time investing in tax liens, I suggest you get very familiar with the Iowa statutes on tax liens - the sale, the holding laws, redemption periods, foreclosure process, etc.

Anyone buying the property from you at a future date will also have to get a Flood Insurance policy from a bank, and this will be uncovered at that time - which may or may not kill the re-sale.You may have an option legally to undo the deal due to the Seller's inaccurate disclosure combined with your contract clause - I don't know the strength of your case based on your State's case law and statutes of limitation, so you will need to check with a licensed attorney in your state with this experience.Get a topographic survey to confirm the extent of the flood plain on your property.  

Here is the statute:475.43 Presumptions.

@Mike Miller, That's exactly right.  1031 is a federal statute equally applied nationwide. 

Yes, a judge in Texas can (and often does) interpret a statute differently than one in MN or FL, but if you're concerned about the eliminating all risk then don't get involved in business...in fact, don't even get out of bed tomorrow morning...that is the only way to eliminate risk.

COVID world my hobbies have been reading executive orders, study case law and statutes into wee hours of am searching for new and creative ways to resolve "tenant hijack" of properties.Pre-COVID I love traveling and spending time with friends and family all over the world, visiting with my active duty kids at various duty stations.

Most judges follow the statute and give the tenant 10 days to vacate.

There is no statute that prohibits a landlord from accepting past due rent during an eviction.