Darcy Stacom, who has brokered $150B in investment sales, has left CBRE to start her own firm.

Stacom is launching a New York-focused boutique advisory and brokerage firm, Stacom CRE, after more than four decades in the field, including 22 years at CBRE.

“Commercial real estate in New York and globally is in transition, and that provides a great opportunity for a new nimble boutique advisory firm in this space,” Stacom said in a statement. “I think this is the right moment to strike out on my own.”

Her new firm will provide traditional brokerage services and will also offer consulting and strategy services not typically provided, according to a press release. Stacom CRE will provide advisory services for clients looking to rightsize, restructure or exit portfolios, engage in ground lease negotiations, introduce limited partners to general partners and execute asset dispositions.

“We thank Darcy for numerous contributions in building our New York Investment Properties team. During her more than 20 years here, Darcy drove some of New York's most iconic transactions and has been a champion of diversity and giving back to the community,” CBRE President for the New York Tri-State Area Matt Van Buren said in a statement. “We wish her well with her new firm.”

CBRE’s Doug Middleton, who has been running the firm’s investment properties group for the last year and a half, will continue to oversee the group, CBRE told Bisnow in a statement. Bill Shanahan, who long worked as Stacom's partner, will stay on as senior producer, connecting owners with troubled properties to capital sources.

Stacom’s career trajectory led The Wall Street Journal to nickname her “Queen of Skyscrapers” in 1997. She began her career at Cushman & Wakefield, where her father, Matthew Stacom, was a leading broker, before jumping to CBRE in 2002, The Financial Times reported.

Her fingerprints are all over transactions including the $5.4B sale in 2006 of Peter Cooper Village and Stuyvesant Town, which covered 80 acres and 110 separate buildings and is still the largest single-asset real estate transaction in NYC history.

Stacom also broke records in 2008 when she closed the $2.8B sale of the General Motors Building, the largest single-office-building sale in history.

She was involved in Midtown South’s largest office asset sale, brokering a deal for 11 Madison Ave. for $2.6B, as well as the $1.3B sale of 30 Rockefeller Plaza, which was the largest office condo sale in history.

She has most recently served as CBRE’s chair and head of NYC capital markets, and she has been named CBRE’s top investment sales professional eight times. She is also the co-chair of the Real Estate Board of New York’s Diversity Committee.

“This industry needs more women-led enterprises, and I look forward to continuing to forge that path and bring the next generation of women leaders along with me,” she said.