Serving 1 community in New York City
Interior Designer in New York City
Interior design for New York City apartments, townhouses, and selected workplaces where every decision must earn its place in the plan.
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Est. 1996 · ASID & IIDA Members · WBENC Woman-Owned · 500+ Clients · 3M+ Sq Ft Designed
In Manhattan, storage is architecture. Get the millwork right and the apartment lives a third larger than it measures.
Interior Design in New York City
New York City projects can place real pressure on storage, circulation, light, sound, and the relationship between existing architecture and new work. A well-designed apartment or townhouse is not simply a smaller version of a house. It requires clear choices about movement, built-in function, visual calm, and how rooms perform throughout the day.
Manhattan apartments are among the most constrained interiors we work on, because everything competes for the same square foot. The prewar buildings along Fifth, Park and Central Park West — Candela, Emery Roth and their peers — offer high ceilings, herringbone floors, plaster crown and gallery entries, paired with a kitchen originally built for staff and closets sized for a smaller wardrobe era. Postwar and new condos offer better mechanicals and worse proportion. Townhouses on the Upper East Side and in the Village offer four or five floors and one stair. Penthouses offer terraces and setbacks that change every ceiling plane. Across the river, Brooklyn brownstones in Park Slope, Brooklyn Heights and Cobble Hill add parlor floors, marble mantels and a garden level that needs to be made genuinely usable.
Space is the constraint, so the plan carries the design. We start with circulation, sightlines and how the light moves through a floor-through or an L-shaped layout, and we test whether a wall is load-bearing or merely inherited. Custom millwork does the heavy lifting after that: full-height cabinetry, libraries, bars, banquettes, entry storage, bed walls, and closets designed around what you actually own. A kitchen in a prewar apartment is an engineering problem before it is a design one — ventilation routing, plumbing risers, appliance depth, and the location of a beam nobody drew. Get those right and the apartment feels considerably larger than its floor plate.
INSABELLADESIGN has been designing interiors since 1996 — full service, ASID and IIDA members, WBENC-certified and woman-owned, based in Little Silver, New Jersey, working across New Jersey, New York, Connecticut and Florida. More than three million square feet designed, over 500 clients, residential and commercial. Beth Insabella Walsh leads every project and stays with it from the first plan through the last delivery. In a market where the building itself sets much of the schedule, having one person accountable across drawings, board submission, construction and install is not a luxury.
What We Design Across New York City
We work on apartment and townhouse renovations, kitchens, baths, dressing and storage systems, libraries, custom millwork, lighting, furnishings, textiles, and art. The goal is to turn the actual footprint into a more capable and complete place to live without relying on surface-level solutions.
Selected offices, professional environments, hospitality, retail, and amenity projects are developed around user flow, privacy, meeting needs, finish durability, lighting, and the specific character of the space.
INSABELLADESIGN was established in 1996 by founder and principal Beth Insabella Walsh, ASID, IIDA, CID. The studio is based in Little Silver, New Jersey and is WBENC-certified and woman-owned. A principal-led process connects the design direction to the planning, materials, documentation, sourcing, coordination, and installation support appropriate to the engagement.
Residentially: gut renovations and apartment combinations, kitchens built into tight footprints, primary and secondary baths in honed marble or limestone, custom cabinetry and paneling, libraries and studies, dressing rooms and closet systems, entry and mudroom storage, and lighting plans drawn around plaster ceilings and real ceiling heights. Townhouses and brownstones add stair, floor-by-floor planning, garden-level connection to the yard, and the restoration or reinterpretation of original mantels, moldings and shutters. Pied-à-terres get the same rigor at a smaller scale — for a place used forty nights a year, every piece has to earn its footprint. Furnishings, window treatments, rugs, textiles and art are specified and procured as part of the scope, with installation planned as a single event around the building's freight elevator schedule.
Commercially we design offices and executive suites, financial and family-office space, medical and dental practices, hospitality, showrooms, and residential building lobbies and amenity floors. City commercial work runs on landlord work letters, building standards, code and ADA review, filings, and a fixed occupancy date, with after-hours access rules of its own. The method is the same as on the residential side: plan the space, draw the millwork, specify the finishes, coordinate the trades, protect the schedule. We are an interior design firm and do not offer home staging — nothing here is temporary dressing for a listing.
Communities We Serve in New York City
- Manhattan, NY — top-of-market island borough
Why New York City Chooses INSABELLADESIGN
- Nearly 30 years of award-winning residential & commercial design (est. 1996)
- ASID & IIDA professional members · WBENC-certified, woman-owned firm
- Full service: detailed space planning and design documentation, custom kitchens & baths, millwork, furnishing, install
- Every project led personally by founder Beth Insabella Walsh
- Trusted by the architects, builders, and trades our clients rely on
- Sourced materials, custom fabrication, and finishes held to an exacting standard
New York City Interior Design — FAQs
Can you help determine what is possible in an apartment or townhouse?
A consultation can identify the design questions that need to be investigated: layout, storage, light, material choices, project coordination, and the existing requirements of the property. Detailed feasibility depends on the property and the professionals needed for the work.
Will Beth Insabella Walsh be involved?
Beth is the founder and principal. She guides the design direction with a senior team supporting the detailed work of coordination, documentation, sourcing, and installation support appropriate to the project.