Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the use in this Registration Statement on Form S-1 of Compass, Inc. of our report dated March 1, 2021, except for the effects of the stock split discussed in Note 16 as to which the date is March 19, 2021, relating to the financial statements, which appears in this Registration Statement. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

New York, New York

March 31, 2021