Business Directory Alla Rubinstein - Real Estate Agent, Signature Properties Ebner & Assoc. Share: Real Estate Sales & Services Alla Rubinstein - Real Estate Agent, Signature Properties Ebner & Assoc. Visit Website 326 Elk Avenue Crested Butte, CO 81224 (970) 305-5517 About Map About Alla Rubinstein is a REALTOR® and a Resort & Second-Home Property Specialist in the Gunnison - Crested Butte area with Signature Properties, Ebner & Assoc. What's Nearby? Distance: 5 10 15 20 25 50 mi.