Zillow Advice: Bugs - Why did my street address recently change from 5350 E Deer Valley Dr to 5450 E Deer Valley Dr?

Zillow Advice: Bugs - Why did my street address recently change from 5350 E Deer Valley Dr to 5450 E Deer Valley Dr? http://www.zillow.com/advice-thread/Why-did-my-street-address-recently-change-from-5350-E-Deer-Valley-Dr-to-5450-E-Deer-Valley-Dr/250647/ Zillow Advice | Zillow Real Estate