Residents are already enjoying Lowe's, which is anchoring the newly developed Sierra Lakes  Marketplace on Sierra Avenue, a major interchange to the I-210, I-10 and I-15 freeways. This 300,000 square foot upscale retail center is located at the northwest corner of Sierra and the 210 freeway. In addition to Washington Mutual, other businesses such as Costco, Applebee's, and El Pollo Loco are near completion. Costco opened its doors for business on November 17, 2006. The development is also part of the 2100-unit, master planned community of Sierra Lakes, which includes a 18-hole championship golf course. Median household income of the Sierra Lakes planned community is over $93,000.