my name is patrick o'reardon, chief building spectoinspector at d.b.i. i want to extend my thank you to the planning department for working on this legislation. the effort is very much appreciated. to start with d.b.i.'s mission, to serve the city and county of san francisco and the general public by ensuring that life and property within the city and county are safeguarded. we do this through the effective, efficient, fair, and safe enforcement of the city and county of san francisco's building, housing, plumbing, electrical and mechanical codes. these codes are updated every three years as we learn more about safety hazards, and new building techniques and materials and technologies and developed. i'm giving this last bullet a little emphasis. d.b.i. wants owners to do everything in their power to upgrade their buildings to make them safer, healthier, more efficient, and more accessible. why do we want to do this? primarily it is because of our aging housing stock. if you look at the picture on this slide, i believe this is monterey boulevard, taken so