Historical clue formulations

• With 55-Across and 55-Across, real-estate catchphrase — 2013-10-08
• Place — 2013-05-11
• When said three times, a real estate mantra — 2006-01-30
• A film may be shot on it — 2001-08-03
• When tripled, a storeowner's asset — 2000-03-09