Worst case I’d send out a simple addendum…The lease agreement between landlord x and tenant x is amended in the following ways.

I have clients that are currently amending taxes because their previous CPA didn't understand this industry.

HaleyThere are different ways this can go. 1) if you acquired the property in the current year, you would put the assets in your depreciation schedule just as any other asset and take the benefit of accelerated depreciation. 2) If you did a retroactive cost seg, you have to file for 3115 and take the adjustment as section 481 adjustment3) If you did the cost seg on the properties that were acquired last year(only one tax return has been filed), you could amend your return from the prior year. 

Just let them sign an amendment to vacate the property early. 

@Timothy Taylor, Obtaining the Zoning Map Amendment (Zoning Change) to RT-4 now "Permits you" from a Zoning Standpount to "Add" the 4th Unit (Assuming you have at least 4,000 sq.ft. of Lot Area).

I would simply talk to your CPA or Tax accountant and file an extension until you have the best and final answer.Worse case scenario if there is or was an error you simply file an Amended return.

I have even had situations where I had to amend my taxes because the tax person screwed up.

.)-- Everyone is already talking about amendments to the bill, including the sponsor.

When we onboard folks, we take a look at their last 3 years tax returns for FREE and make amendments if we think we can get them back money, at that point we charge.

You can negotiate a price, but don't sign a contract until you know your buyer is good, then you can double close or you can sign an amendment or add in special stipulations that the original agents contract IS ASSIGNABLE as a way around and make all things legal and transparent.