Sean Reimer

Senior Managing Director, Capital Markets | Institutional Advisory

Sean Reimer

Senior Managing Director, Capital Markets | Institutional Advisory


Sean Reimer

Sean Reimer is a senior managing director of Capital Markets and co-head of Institutional Advisory at Walker & Dunlop and is based in New York, New York. In this role, he is responsible for sourcing and structuring debt and equity solutions across all commercial real estate asset classes nationwide. He has more than 13 years of principal-side investment experience in debt and equity transactions.

Prior to joining Walker & Dunlop, Reimer served as a principal at Square Mile Capital Management, where he led the firm’s highest-producing origination team. During his tenure, he originated more than $8 billion in debt and equity transactions, resulting in more than $2 billion of retained principal investments by the firm. His experience spans value-add bridge loans, construction loans, stabilized loans, mezzanine debt, preferred equity, and joint venture equity across major U.S. markets. Before that, he served as a director in Cantor Fitzgerald’s CMBS lending group. Earlier in his career, he was a partner at RL Realty Partners and a senior financial analyst at CBRE.

Reimer earned a bachelor’s degree in industrial and operations engineering from the University of Michigan, graduating magna cum laude.

Sean Reimer is a senior managing director of Capital Markets and co-head of Institutional Advisory at Walker & Dunlop and is based in New York, New York. In this role, he is responsible for sourcing and structuring debt and equity solutions across all commercial real estate asset classes nationwide. He has more than 13 years of principal-side investment experience in debt and equity transactions.

Prior to joining Walker & Dunlop, Reimer served as a principal at Square Mile Capital Management, where he led the firm’s highest-producing origination team. During his tenure, he originated more than $8 billion in debt and equity transactions, resulting in more than $2 billion of retained principal investments by the firm. His experience spans value-add bridge loans, construction loans, stabilized loans, mezzanine debt, preferred equity, and joint venture equity across major U.S. markets. Before that, he served as a director in Cantor Fitzgerald’s CMBS lending group. Earlier in his career, he was a partner at RL Realty Partners and a senior financial analyst at CBRE.

Reimer earned a bachelor’s degree in industrial and operations engineering from the University of Michigan, graduating magna cum laude.

Sean Reimer in the news

Walker & Dunlop

Walker & Dunlop Arranges Joint Venture Equity Partnership and Construction Financing for $132 Million Multifamily Development in Richmond’s Scott’s Addition District

March 30, 2026

CRE Market Beat

Walker & Dunlop

Dermot, Affinius Secure $283M Freddie Mac Refi for 101 West End on Upper West Side

March 18, 2026

REBusiness Online

Walker & Dunlop

Walker & Dunlop Arranges $80M Loan for Multifamily Development on Miami’s Bay Harbor Islands

February 27, 2026

REBusiness Online

Walker & Dunlop

Walker & Dunlop Provides $50.5M Agency Refinancing for Apartment Community in Metro Raleigh

February 24, 2026

Bloomberg

Walker & Dunlop

Wall Street Office-to-Housing Project Gets $779 Million in Loans

January 19, 2026

Commercial Observer

Walker & Dunlop

Walker & Dunlop Provides $116M Fannie Mae Refi for Yonkers Multifamily Complex

January 12, 2026

Deals Closed

Bell Works Fort Monmouth
295 Fifth Avenue
JFK Boulevard
ATL II Portfolio
The Arno
Brewers Block
125 West 57th
Multifamily Portfolio
Williamsburg Wharf
The Madison at Copperleaf
The Mark Hotel
Fillmore at Copperleaf
Strata Portfolio
The Ritz-Carlton Savannah
Multifamily Community
101 West End Avenue
The Quaye at Palm Beach Gardens
450 Lexington Avenue
Alexander Crossing
111 Wall Street
80 Wharf Way
Greenpoint Central

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