What about tax certificates? 

And the proposed plan below will start the middle of June.Cap STR registration certificates town-wide at the 1255.Phase out STRs in both multi-family units and Accessory Dwelling Units.

Yes, a tax lien certificate will pay me a rate of return… but only if the certificate is redeemed.

I have made offers on moldy houses before, the worst of which would have taken $40k to be fully remediated and have a certificate of cleanliness.A little mold can be pulled out and cleaned up, but when the whole house is moldy, I want pros in and a certificate from a 3rd party saying it is clean.The last thing I want is the new owners to talk to the neighbors and find out what was growing in their 'new home' before they bought it.

Do you mean a tax certificate/lien?

Here a spec build sale doesn't close until it receives a certificate of occupancy, or when it's reached substantial completion. 

I really like owner financing and Fix and Flip, and tax lien certificates and tax deeds.  

While at the courthouse, check out the Decedent's death certificate for clues.

Will you have issues with the manufactured home certificates?  

{Note: we have an environmental condition in our Agreement of Purchase and Sale (APS)}.confirm if an engineering assessment/study (something beyond the normal building inspection) is required;  order if necessary; review results before signing off on inspection condition in APS.obtain copies of any zoning confirmation letters or variances applicable to the property (and its current use);obtain consent letter from Vendor to pull property histories for workorders, citations, zoning variance applications, planning submissions, & building permit history from City/Municipal planning and inspections department;(if applicable) obtain verification from fire marshal that property is up-to-date on compliance and inspections;obtain inspection history and operational certificate for any lifts/elevators on the property;in addition to estoppels for tenants we also review all supplier/service contracts and, if the contract is informal {aka handshake}, we execute an estoppel with the supplier/provider.