. >> good evening, my name is john barbie and elizabeth sitron is helping me with the powerpoint portion of my presentation because i'm 67 years now and i'm technically challenged. i've lived in liberty hill since 1979, i was in my early 30's then and i am one of the founders of the liberty hill historic district. i live at 325 st. carlos then. we wanted to say -- >> you can't hold the microphone. >> just like that and it works. again, technically challenged. this is almost a fully in tact segment of very old pre1906 san francisco, we knew it was fragile and vulnerable because demolitions had started and we wanted to slow this whole thing down, and also when you take on one of these old houses, it's a very serious challenge because of the age of the house, even window blast becomes fr*ifl and shadows, all the piping has to be renewed, the piping, all the electric has to be renewed and it has to be made more seismic in spite of the fact that these buildings survived 1906, we have new codes and it is advisable. so, it's a very serious undertaking, you have to build the house from the insid