The Jack London District encompasses more than 70 blocks and a significant stretch of the Oakland waterfront which had been a prime development project for Oakland's mayor, Jerry Brown. Prior to 2000, housing mainly consisted of the Portbello condominiums (dating from the mid-1970s) and several reused warehouse buildings including the Fourth Street Lofts, the Tower Lofts, the Brick House Lofts, the Pocket Lofts, the Portico Lofts and the Phoenix Lofts. Since 2000, over one thousand new units of housing have been built in the area including The Sierra, the New Market Lofts, the Allegro Condominiums, The Landings, The Ellington, 288 Third, 428 Alice, AquaVia, The Bond and 200 Second Street. A neighborhood association in the district, The Jack London Improvement District advocates for the interests of the residents and commercial users of the District.