If they are on a month-to-month, give them 30 days notice in writing.If they are on a term lease, give them 30 days notice prior to extending/renewing the lease.

In a lease it states if you want to leave early from the lease, “if you move out before your lease expires and you provide a 30 day notice you shall be liable for one additional month of rent and shall forfeit securit...

By signing below, Tenant hereby authorizes the release of any and all Police Incident Reports pertaining to tenant(s) and this rental to Landmark Management Services, Inc. /______________ /_______________ 

Now the seller won't release the $1000 in earnest money because he wants me to pay for the repairs even though I'm not buying the property. 

In my experience, when we acquire a property that has had a tenant for an extended period of time at below market rent, they will not want to pay your price. 

The small bank/credit union you bank with may be able to get you some solid deals if you’ve banked with them for an extended period of time.

The bank had mentioned extending the construction loan term if I wasn't 100% finished with the rehab, but I wonder if I should just bite the bullet, stick with them, and look to refi later?

That's why buyers dealing with wholesalers need to know the laws about Alabama redemption rights, which can extend after the tax deed has been issued. 

They have asked him to extend and want to charge a $20,000 extension fee.

Most lenders hold back the repair funds and they establish a timeline as to what needs to be done and release the funds as repairs as made.