amy chan, who's also representing the mayor's office of housing and rob college, director of the rent board. what is the housing balance report? in april of 2015, the board of supervisors approved ordinance 5315 to add section 103 to the planning code. this new section directs the planning department to monitor and report on the balance between new market rate housing and new affordable housing reduction. the housing balance is the proportion of all affordable housing units to the total number of net new housing units. over a 10-year housing balance reporting, i will be reporting on the third report which was submitted to you in late may and covers the period from the first quarter of 2007. to quarter 4 2016. this will be the third presentation under housing balance before the board of supervisors mandated. so why a housing balance? one stated goal of the ordinance is to ensure the data is meeting affordable housing targets city-wide and within neighborhoods informs the approval process for new housing development. just to remind the commissioners, here separate housing affordable pro