ok, i am editing this - what does the amended lease say about how and when the work needs to be done and how the deduction is taken? 

I intend to register a protest with HUD to amend the practice.

I personally have never been involved in the rezoning of a building in Chicago.However, a Google search helped me find this City of Chicago website about the process of amending the zoning of a building in Chicago: City of Chicago :: Zoning AmendmentFrankly it doesn't look like there is a fast way to complete the process before purchasing the subject property.It looks like you will need the approval of the City Council of Chicago and therefore it might be a good idea at some point to reach out to the Alderman for support.More specifically, it will be a good idea to hire an attorney to represent you who has experience dealing with the Chicago zoning board and local politicians.Therefore, a price reduction could/should be requested.Good luck

They can certainly file an amended tax return. 

—Subsection (a) of section 408, as21 amended by the preceding provisions of this Act, is amend22 ed by adding at the end the following new paragraph:23 ‘‘(8) No part of the trust funds will be invested24 in a corporation, partnership or other unincor25 porated enterprise, or trust or estate if—Pg. 6941 ‘‘(A) in the case of an entity with respect2 to which interests described in clause (i), (ii), or3 (iii) are not readily tradable on an securities4 market, 10 percent or more of—5 ‘‘(i) the combined voting power of all6 classes of stock entitled to vote or the total7 value of shares of all classes of stock of8 such corporation,9 ‘‘(ii) the capital interest or profits in10 terest of such partnership or enterprise, or11 ‘‘(iii) the beneficial interest of such12 trust or estate,13 is owned (directly or indirectly) or held by the14 individual on whose behalf the trust is main15 tained, or16 ‘‘(B) the individual on whose behalf the17 trust is maintained is an officer or director (or18 an individual having powers or responsibilities19 similar to officers or directors) of such corpora20 tion, partnership, or other unincorporated en21 terprise.22 For purposes of subparagraph (A), the constructive23 ownership rules of paragraphs (4) and (5) of section24 4975(e) shall apply, and any asset or interest heldPage 6951 by the trust shall be treated as held by the indi2 vidual described in such subparagraph.’’.

@Dave Spooner I somewhat assured they were pretty amendable to it.

So they simply amended the end date on the lease and initialed( both parties)to make the end date end in a month.

You can do an amendment or create a new lease. 

There are some 5th and 14th amendment issues regarding takings etc.

The article reports that Austin City Council approved an amendment for the PUD to allow up to 6,300 to be built in the community.