Design Firm Twelve Expands Dumbo Office Lease

The firm signed a 7,000-square-foot expansion at 45 Main Street to double its office space.

Updated on Oct. 20, 2026 in Commercial

Bold vector editorial illustration depicting a red brick industrial factory building with large steel windows, representing a commercial office expansion. — Design firm Twelve has expanded its commercial footprint in Brooklyn, signing a new lease for 7,000 square feet at 45 Main Street. AI Illustration. Upload story photo >

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Design firm Twelve has secured a 7,000-square-foot lease expansion at 45 Main Street in Dumbo, bringing its total footprint to 14,000 square feet. The company occupies part of the building's sixth floor as part of a new seven-year commitment.

Why it matters

The move represents a significant growth milestone for the firm, which has been established at the 45 Main Street location since 2015. This expansion solidifies the company's long-term presence within the Brooklyn commercial district.

The seven-year lease expansion at the Brooklyn property carries an asking rent of $52 per square foot. The building currently encompasses a total size of 476,000 square feet.

The players

Twelve

Twelve is a design firm that has maintained office space in the Dumbo area for over a decade.

Two Trees

Two Trees is a prominent real estate development company responsible for managing numerous properties throughout Brooklyn.

Alyssa Zahler

Alyssa Zahler is an in-house representative for the real estate developer Two Trees.

Elizabeth Bueno

Elizabeth Bueno serves as an in-house representative for Two Trees.

The details

Twelve handled the expansion negotiations independently without a broker, while Two Trees was represented internally by Alyssa Zahler and Elizabeth Bueno. The firm plans to relocate into the newly acquired sixth-floor space in early 2027.

Twelve originally moved into the 45 Main Street building in 2015.
The firm is expected to move into the expanded space in the first quarter of 2027.

Culture Shift

This expansion reflects the broader trend of established creative firms cementing their footprint in the Dumbo office corridor. The move follows a pattern set by other major tenants like the Bjarke Ingels Group, which recently renewed its lease in the neighborhood.

The expansion signals continued demand for commercial space in Dumbo, which may influence rental pricing and availability for other local businesses. Residents and local workers will see continued investment in the 45 Main Street property as the firm prepares for its 2027 move.

The takeaway

Companies looking to expand in high-demand neighborhoods like Dumbo often benefit from long-term lease commitments. Businesses can improve their operational stability by securing extra square footage well in advance of their growth needs.