Good Day [recipient],
In the light of recent events, our company has decided to relocate our office. Please take note that our current office will cease operation on [date] and our new office will start operation on [date].
Listed below is our new address as well as our new contact information:
[City, State and Zip Code]
Telephone number: [Telephone number]
Fax: [Fax number]
Email: [email address]
Thank you and we hope to see you there.
[Name of sender]