Sydney developer Addenbrooke has agreed to build a nine-storey office building with an end value of $135 million in a land swap deal with ASX-listed mobility and payment company A2B Australia.

In broad terms, Addenbrooke will build the office on approximately 2500 square metres of land it now owns at 20-24 Bourke Road, Alexandria, which adjoins the much larger A2B holding at 9-13 O’Riordan Street near Green Square.