available , we do not expect any transactions to have a significant impact on our reported income tax expense . in connection with the completion of the reorganization , we will reevaluate the ability to realize our deferred tax assets related to u.s . operations under the new aon uk corporate structure and we may recognize a non-cash , deferred tax expense upon the conclusion of this evaluation . based on information currently available , we do not expect the additional deferred tax expense , if any , to be significant . the reorganization will result in additional ongoing costs to us . the completion of the reorganization will result in an increase in some of our ongoing expenses and require us to incur some new expenses . some costs , including those related to employees in our u.k . offices and holding board meetings in the u.k. , are expected to be higher than would be the case if our principal executive offices were not relocated to the u.k. . we also expect to incur new expenses , including professional fees and sdrt in connection with settlement of equity-based awards under our stock or share incentive plans , to comply with u.k . corporate and tax laws . item 1b . unresolved staff comments . item 2 . properties . we have offices in various locations throughout the world . substantially all of our offices are located in leased premises . we maintain our corporate headquarters at 200 e . randolph street in chicago , illinois , where we occupy approximately 355000 square feet of space under an operating lease agreement that expires in 2013 . there are two five-year renewal options at current market rates . we own one building at pallbergweg 2-4 , amsterdam , the netherlands ( 150000 square feet ) . the following are additional significant leased properties , along with the occupied square footage and expiration. .

Table: property: occupied square footage lease expiration dates 4 overlook point and other locations lincolnshire illinois 1224000 2014 2013 2019 2601 research forest drive the woodlands texas 414000 2020 dlf city and unitech cyber park gurgaan india 383000 2012 2013 2014 2300 discovery drive orlando florida 364000 2020 devonshire square and other locations london uk 327000 2018 2013 2023 199 water street new york new york 319000 2018 7201 hewitt associates drive charlotte north carolina 218000 2015

7201 hewitt associates drive , charlotte , north carolina . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218000 2015 the locations in lincolnshire , illinois , the woodlands , texas , orlando , florida , and charlotte north carolina , each of which were acquired as part of the hewitt acquisition in 2010 , are primarily dedicated to our hr solutions segment . the other locations listed above house personnel from each of our business segments . in november 2011 , aon entered into an agreement to lease 190000 square feet in a new building to be constructed in london , united kingdom . the agreement is contingent upon the completion of the building construction . aon expects to move into the new building in 2015 when it exercises an early break option at the devonshire square location. .

Question: considering the properties with lease expiration dates in 2020 , what is the average occupied square footage?
Answer: 389000
Calculation: divide(add(414000, 364000), const_2)
Explanation: it is the sum of the occupied square footage for both years divided by two to represent the average .