Alabama tax certificate - risk of building new house after city demo of old house

[Tyson Begly]

I have the tax certificate for a house in Russell County.  The house is condemned and the city is going to demolish the condemned house in the next 6 months.  I won't be able to convert my tax certificate into a tax deed until 2026. I would pay the demo fee/lien so that I can convert to a tax deed. 

Once the city demolishes the existing house, is there a risk with building a new one before I get the tax deed?  If someone redeems, clearly the new house was all my investment, so I should be reimbursed.