Exhibit 23.1

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT

We consent to the inclusion in this Registration Statement of Crown PropTech Acquisitions (the Company) on Amendment No. 2 to Form S-4 of our report dated April 12, 2022, which includes an explanatory paragraph as to the Company’s ability as a going concern, with respect to our audit of the financial statements of Crown PropTech Acquisitions as of December 31, 2021 and 2020 and for the year ended December 31, 2021 and for the period from September 24, 2020 (inception) through December 31, 2020, which report appears in the Prospectus, which is part of this Registration Statement. We also consent to the reference to our Firm under the heading “Experts” in such Prospectus.

/s/ Marcum LLP

Marcum LLP

New York, NY

April 19, 2022