Knock sends out monthly or quarterly invoices.  If you do not receive one, one thing to note is invoices are only emailed to the billing contact on the property account.  To confirm what email address is on file or to get past/current invoices, please reach out to  They are also available for any additional general billing questions. 

Beginning January 2020, we have a new remittance address for check payments only. Please mail check payments and remittance documents to:
Knock, Inc.
P.O. Box 734825
Chicago, IL 60673-4825
Our corporate address, and thus the address stated on our W-9 remains as follows:
1455 NW Leary Way
Ste 200
Seattle, WA 98107

The most efficient way to remit payment is electronically via credit card or ACH. Follow the link at the bottom of your invoice email to pay electronically.

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