Acco, Inc. leased a building from Beta Corp for a term of fifteen years. By the end of the third year in the term of the lease, Acco had completed construction of an addition to the building with its own funds, which it used as additional needed office space. The addition cost Acco $250,000. At the end of the lease, Acco is $150,000 in arears with its lease payments. Considering Acco has improved the value of the leased property by $500,000, Beta agrees to forgo the unpaid rent. Discuss the tax consequences of these facts to Acco (computation of depreciation amounts not required)