If you haved moved already it is too late.
From the ATF website:
"(C10) May a licensee change the location of the licensed business or activity? [Back]
To change your location, you must file an application for an amended license, ATF Form 5300.38, not less than 30 days prior to the move. You must obtain the amended license before commencing business at the new location. The application for an amended license would include the certification of compliance with state and local laws and notification of local law enforcement officials as outlined in Question A2."
This goes for C&R license holders as well.
http://www.atf.gov/firearms/faq/faq2.htm#c10ZM