Residential Renovation · Brooklyn, New York
Complete residential gut renovation, structural rehabilitation, and a 400-square-foot vertical addition.
Architecture: Freeform + Deform LLC
General Contractor: RDDNY Design Build
Building Area: Approximately 5,000 SF
Vertical Addition: 400 SF
Location: Brooklyn, NY
Located in Brooklyn, 878 Jefferson Avenue underwent a comprehensive residential transformation combining structural rehabilitation, contemporary architecture, and detailed construction craftsmanship.
Designed by Freeform + Deform LLC and constructed by RDDNY Design Build, the project included a complete interior gut renovation, replacement of existing wood floor joists, reinforcement of a cellar support wall, and construction of a new 400-square-foot vertical addition.
The architectural design introduced a multistory open space on the upper level, skylights, a mezzanine, and custom steel staircases. A new study room and private terrace expanded the property’s functionality, while triple-pane sound-insulating windows improved acoustic comfort and thermal performance.
Modernizing an existing multistory Brooklyn residence required careful construction sequencing and coordination between existing structural conditions and new architectural elements.
The scope extended beyond a conventional interior renovation. Demolition exposed the building framework, allowing extensive structural work and the integration of new spaces.
Existing partitions, finishes, and designated assemblies were removed to expose the underlying structure. The building was reconstructed around an updated residential layout, with new floor assemblies, partitions, and architectural finishes.
A significant component of the structural work involved replacing existing wood floor joists and coordinating new framing with masonry bearing conditions, structural supports, and renovated floor assemblies.
At the cellar level, the existing structural support wall was reinforced as part of the overall rehabilitation. The work was coordinated alongside replacement framing and the renovated building configuration.
The new vertical addition introduced a dedicated study room with access to a private outdoor terrace.
Construction required the integration of new structural framing, roofing, exterior enclosure, and connections to the existing building.
The addition creates a separate space for work, reading, and relaxation while expanding the residence’s functional living area.
One of the project’s defining features is the multistory open space at the upper level.
Multiple skylights, tall windows, and an open mezzanine bring daylight into the residence and create visual connections between floors.
A custom steel staircase with wood treads and horizontal metal railings complements the exposed brick accents, hardwood flooring, and contemporary finishes.
New triple-pane sound-insulating windows were installed as part of the building envelope improvements.
The upgraded glazing helps reduce exterior noise transmission while supporting thermal insulation and interior comfort—important considerations in an urban Brooklyn setting.
The new window assemblies were coordinated with the building’s renovated exterior openings and architectural design.
The renovation brings together contemporary residential finishes and carefully executed architectural details.
The transformation of 878 Jefferson Avenue demonstrates how structural rehabilitation and coordinated construction can modernize an existing Brooklyn residential building.
The result combines open spaces, abundant daylight, upgraded acoustic comfort, contemporary finishes, and expanded functionality.
The project brings together the architectural vision of Freeform + Deform LLC and the construction execution of RDDNY Design Build, reflecting RDDNY’s experience with complex residential renovations, structural alterations, and vertical additions throughout New York City.
RDDNY Design Build specializes in complex residential renovations, structural alterations, building additions, and comprehensive construction projects throughout New York City.
Our team works with architects, engineers, and property owners to execute projects requiring existing-building rehabilitation and detailed architectural construction.
Discuss your townhouse renovation, structural alteration, or vertical addition with RDDNY Design Build.
