I also like to make it a condition that the seller deliver a couple of days before closing an Estoppel Certificate from the tenant where the tenant confirms:  (a) true and accurate copy of the lease and all amendments thereto; (b) address/unit they are occupying; (c) statement that Landlord is not in default under the Lease: (d) statement that Tenant is not in default under the Lease; and (e) statement of monthly rent and remaining term.This protects the buyer in the event there has been a subsequent written or verbal amendment of the lease (that the seller does not disclose) and prevents the tenant from making statements to the buyer/new landlord that are different from the terms of the lease that was provided to the buyer from the seller.Vivian

But now he is staying so we decided to play the cat card, and told him that per his lease pets not allowed and if he would like to keep it we will need to amend his lease to include additional $100 pet rent plus collect additional security deposit.

Better to hire someone then to pay for someone to amend possible mistakes or missed strategies later! 

So with that said, you then would have to make sure your contracts are flawless AND you likely will be doing more work constantly checking in on Due Diligence periods, the wholesalers contracts, their amendments, keeping up with the closing company etc. 

The city of Woodstock has recently amended their by law that enables all the R1 zoning house to have 1 or 2 Additional residential units.

Also, in order to take the bonus depreciation, do I need to amend prior year return, or can I take the adjustment in the current year?

Normally to change bylaws, there should have been a notice to the community and the item put up for a vote with a certain % voting for it to be amended.

Yes:- file state tax extensions if you have state income tax- make estimated state tax payments- file amended 2018 returns if needed, unless you filed a 2018 extension in 2019-  make1st quarterly estimated payment towards your 2022 taxes- adopt a dog from your local shelter

Although these items are eligible for tax deductions, I overlooked this aspect when filing my taxes last year.Now that it's 2024, I'm wondering if it's possible to file an amended return to potentially recoup some money from the IRS.

It would probably be easiest to amend the operating agreement to remove those members.