Mail Stop 3628

                                                                    August 30,
2021

Via E-mail
Daniel Vinson
Director, Chief Executive Officer and Vice President
Barclays Commercial Mortgage Securities LLC
745 Seventh Avenue
New York, NY 10019

       Re:       Barclays Commercial Mortgage Securities LLC
                 Registration Statement on Form SF-3
                 Filed July 7, 2021
                 File No. 333-257737

Dear Mr. Vinson:

       We have limited our review of your registration statement to those
issues we have
addressed in our comments. In some of our comments, we may ask you to provide
us with
information so we may better understand your disclosure.

       Please respond to this letter by amending your registration statement
and providing
the requested information. If you do not believe our comments apply to your
facts and
circumstances or do not believe an amendment is appropriate, please tell us why
in your
response.

       After reviewing any amendment to your registration statement and the
information
you provide in response to these comments, we may have additional comments.

General

  1. We note your registration statement contemplates asset pools with loans
secured by
     residential cooperative properties. We note that these loans have been
tied to floating
     rates, most often linked to LIBOR. We also note that shareholders of the
residential
     cooperatives purchase shares or stock that entitle the shareholder to
proprietary leases
     or occupancy agreements which confer exclusive rights to occupy specific
units, the
     value of which depends on the appraisal of the property rather than
expected rental
     income. Because the primary source of repayment on the loan will not be:
(i) the
     proceeds of the sale, refinancing, or permanent financing of the property;
or (ii) rental
     income associated with the property, the loans secured by the residential
cooperatives
     are not commercial mortgages. See definition of commercial real estate
loan in Rule
     14 of Regulation RR (17 CFR 246.14).
 Daniel Vinson
Barclays Commercial Mortgage Securities LLC
August 30, 2021
Page 2

 Please remove the loans backed by residential cooperative properties from your
registration
 statement and from all prior and future takedowns of your prior registration
statements
 pursuant to the requirement that the registration statement contain a single
prospectus with
 one asset class. See Section V.D.1. of Release No. 33-9638 (Sept. 24, 2014).

        We remind you that the company and its management are responsible for
the
 accuracy and adequacy of their disclosures, notwithstanding any review,
comments, action or
 absence of action by the staff.

         Refer to Rules 460 and 461 regarding requests for acceleration. Please
allow
 adequate time for us to review any amendment prior to the requested effective
date of the
 registration statement.

        You may contact Eathen Gums, Special Counsel, at (202) 551-7991 or me
at
 (202) 551-3850 if you have any questions.

                                                     Sincerely,

                                                     /s/ Katherine Hsu

                                                     Katherine Hsu
                                                     Chief, Office of
Structured Finance

 cc:    Anna Glick, Esq., Cadwalader, Wickersham & Taft LLP