. >> thanks steve, andrea brus, i work for supervisor cohen who is the author of this today. this you for hearing this item. this legislation was introduced largely in response to i think a number of concerns we've been hearing over the past couple of months as it relates to office conversion in historic buildings particularly in the pdr 1 b and 1 g and i know you have been struggling with both the incentives we want to provide the owners to rehabilitate them and for protecting and growing pdr space. so the supervisor certainly shares the perspective which i'm sure that many of you have that we want to incentivize owners to maintain and rehabilitate historic buildings especially in the p 1 and 1 b which are in the industrial design center history but we have struggled with the amount of space that these buildings are allowed under the code and that reread it's ugly head with the adams. it helps to have incentives for some of these buildings to allow higher generating office to fund property owners invest in these properties. the code provision written has a lot of unintended