Townhouses & Brownstones
Gut renovations, restorations and additions that preserve historic details while adding modern systems, elevators and open layouts.
Residential Renovation & Construction in New York
Townhouses, brownstones, condos, co-ops and homes — renovated with the same precision, scheduling and transparency we bring to every commercial project.
- Licensed general contractor
- Co-op & condo board experience
- Landmarks & DOB approvals handled
- Fully insured — board COIs in 24 hours
- BBB Accredited Business
Residential construction with commercial-grade discipline
Renovating a home in New York is different from anywhere else. Co-op and condo boards review every plan. Buildings restrict work hours, deliveries and elevator use. Townhouses and brownstones often sit in landmark districts. And behind every finished wall are plumbing, electrical and structural systems that have to be done right the first time.
Quedan Construction is a residential renovation contractor for townhouses, brownstones, condos, co-ops and single-family homes across Manhattan, Brooklyn, Queens, the Bronx, Staten Island, Long Island and Westchester. We bring the same scheduling, safety and transparency we use on commercial projects to every home we build.
Townhouses and brownstones
We renovate and restore townhouses and brownstones from the cellar to the roof — preserving original details such as moldings, staircases and facades while adding modern mechanical systems, open kitchens, new baths, elevators and rear extensions. In landmark districts, we coordinate with your architect on Landmarks Preservation Commission approvals.
Co-op and condo apartments
Apartment renovations live and die by building approvals. We prepare complete alteration packages for co-op and condo boards, provide the insurance certificates buildings require, coordinate with managing agents and supers, and follow every building rule on work hours, noise and elevator use — so your project moves forward without friction.
Single-family homes on Long Island and in Westchester
For homes in Nassau County, Suffolk County and Westchester, we manage whole-house renovations and additions, coordinating permits with local town, city and village building departments and keeping the project on schedule.
One accountable team
Every residential project has a single project manager responsible for budget, schedule and communication, and a superintendent on site every day. You’ll receive weekly updates with photos, a clear view of any changes before they happen, and a home handed back clean, inspected and ready to live in.
Homes we build
Residential projects of every kind
From a single kitchen to a five-story townhouse, every residential project gets a dedicated project manager and a superintendent on site.
Condo & Co-op Renovations
Full apartment renovations under board alteration agreements, with work hours, insurance and building rules managed for you.
Apartment Combinations
Combining adjoining or stacked units into one residence, including structural openings, new stairs and plumbing reconfiguration.
Kitchens
Custom kitchens with cabinetry, stone, appliance coordination and the plumbing, gas and electrical work behind them.
Bathrooms
Primary suites and baths with waterproofing done right, heated floors, custom showers and quality fixtures.
Single-Family Homes
Whole-house renovations and additions on Long Island and in Westchester, permitted through local building departments.
Portfolio
Recent residential projects
- Residential
Great Neck Home Remodel
Nassau County, NY · 2025
4,900 sq ft
- Residential
Park Slope Brownstone Restoration
Brooklyn, NY · 2024
3,600 sq ft
- Residential
Scarsdale Residence Renovation
Westchester, NY · 2023
6,400 sq ft
- Residential
Tribeca Loft Apartment Combination
Manhattan, NY · 2024
4,200 sq ft
- Residential
Upper East Side Townhouse Renovation
Manhattan, NY · 2025
5,800 sq ft
Scope of work
Full-service residential construction
One team responsible for approvals, trades, schedule and quality — so you deal with one person, not twenty.
01
Planning & approvals
- Existing-conditions survey and budget
- Co-op and condo board alteration packages
- DOB permits and Landmarks review
- Insurance certificates for buildings
- Schedule built around your move-in date
02
Construction
- Demolition, framing and structural work
- Kitchens, baths and custom millwork
- Floors, ceilings and finishes
- Windows, doors and facade restoration
- Additions, extensions and roof decks
03
Systems
- New electrical service and lighting
- Plumbing and gas
- HVAC, radiant heat and ventilation
- Smart home, audio-visual and security wiring
- Elevators and lifts in townhouses
04
Closeout
- Inspections and permit sign-off
- Board and building closeout documents
- Punch list and final cleaning
- Warranties and maintenance guidance
- Neighbor and building communication
How we work
From design to move-in
01
Walkthrough
We visit your home, review your goals and any drawings, and identify building, board and permit requirements.
02
Budget & schedule
A clear, line-item budget and a realistic schedule — including board review and permit time.
03
Approvals
We prepare board alteration packages, coordinate DOB and Landmarks filings, and provide insurance certificates.
04
Construction
A superintendent on site every day, protected common areas, respectful work hours and weekly updates with photos.
05
Move-in
Inspections, sign-offs, punch list and a final clean — your home handed back ready to live in.
Why Quedan
Why homeowners choose Quedan
Board-ready
We know what co-op and condo boards and managing agents expect, and we prepare complete packages that get approved.
Respect for your home
Dust protection, clean sites and careful work around finished spaces, neighbors and building staff.
Clear communication
One project manager, weekly updates and no surprises on budget or schedule.
Commercial-grade discipline
The scheduling, safety and quality control we use on commercial projects, applied to your home.
Service area
Residential contractor across New York
We renovate homes throughout the city and the suburbs.
FAQ
Residential construction questions, answered
Do you renovate co-op and condo apartments?
Yes. We regularly work under co-op and condo alteration agreements, preparing the board package, coordinating with the managing agent and building staff, providing insurance certificates and following the building's work-hour and elevator rules.
Do I need a permit to renovate my apartment or house in NYC?
Most renovations beyond cosmetic finishes — moving walls, plumbing, electrical, gas or structural work — require Department of Buildings permits in New York City. Outside the city, permits come from your town or village building department. We coordinate the filings and inspections with your architect.
Can you renovate a townhouse or brownstone in a landmark district?
Yes. Exterior work such as facades, windows, stoops and rear extensions in historic districts requires Landmarks Preservation Commission review. We coordinate with your architect on the application and build to the approved design.
Can you combine two apartments?
Yes. Apartment combinations typically require board approval, DOB filings and sometimes an amended certificate of occupancy, plus structural and plumbing work. We manage the full process.
Can I live in my home during the renovation?
For smaller or phased projects, often yes. We set up dust protection and phase the work so key spaces stay usable. For gut renovations, most clients move out temporarily, and we plan the schedule around that.
Do you work on Long Island and in Westchester?
Yes. We renovate homes throughout Nassau County, Suffolk County and Westchester, coordinating permits with the local town, city or village building department.
Do you work with my architect or designer?
Yes. We work with your architect and interior designer from early budgeting through construction, or we can recommend design partners if you're starting from scratch.
Related guides
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Tell us about your home
Tell us about your home, the scope of the renovation and your timeline. A project manager will respond within one business day.
