Not sure what state you are, but here your lease wouldn't be "void"  Anything that conflicts with the code would be (landlord-tenant code supersedes leases in DE anyway)I would just say you had them sign an older version of your lease in error and need them on the current one.

I look forward to seeing the build make its way to completion.  

The appraisal price estimation I imagine the price estimate is the most valuable but when it is at value are there any other details in the appraisal report that can be used for a price reduction?

I recently started my STR journey using Airbnb.

Quote from @Tomer Einy: I would reach out to agents doing a lot of work in the area you want to be flipping..

@Jorge VazquezWe have a HELOC and have not used it I.

Sneaky duplex is a term I coined and is when you section off part of your home and create a short term rental unit, like a hotel room.

My spouse and I purchased a cabin in November 2023 as a STR and started renting it out in March of this year. 

If I was in your shoe's I'd go with the multifamily.

I am looking for any advice I can use to pursue this goal.