30 Main St

The Sweeney Building is an 11-story, early 20th-century former factory converted to condominiums, completed in 1910 and rebuilt in a Neo‑Classical Industrial style during its origin as W.H. Sweeney Manufacturing. Units range from one- to three-bedroom lofts and duplexes with layouts that favor open-plan living: expansive great rooms, formal dining areas, and generous ancillary spaces such as dens, home offices, and large laundry/utility rooms. Character-defining interior traits include soaring beamed concrete ceilings above 11 feet, oversized arched or industrial steel windows, hardwood floors, built-in cabinetry, and high-end kitchen packages (Sub‑Zero, Viking, Bosch, Gaggenau/ Thermador in many units). Primary bathrooms often feature double vanities, deep soaking or jetted tubs and separate showers; walk-in closets and abundant storage are common. Building services and shared amenities are full-service: 24‑hour doorman/concierge, attended lobby, elevator access, renovated fitness center, bike room, basement storage cages and on-site building staff. Outdoor offerings include a furnished, Wi‑Fi–equipped roof deck and private roof terraces for select penthouses. The property is pet-friendly and includes modern upgrades such as central air, in-unit laundry in many homes, and building-wide ultra-high-speed internet. Located in DUMBO’s historic district, the building fronts cobblestone streets and is a short walk to Brooklyn Bridge Park, waterfront promenades, Empire Stores, cultural venues and multiple subway lines, ferry access and CitiBike stations, supporting an active, walkable waterfront lifestyle.