Navigating a renovation in Manhattan is a unique challenge that requires more than just skilled labor; it demands an intimate understanding of the city's complex building codes, rigorous co-op boards, and the logistical hurdles of high-rise construction. At Corniel Construction LLC, we specialize in turning these challenges into seamless transformations.
Our portfolio spans the diverse neighborhoods of New York City, from the historic charm of the Upper West Side to the industrial elegance of Tribeca. As a premier General Contractor Manhattan, we focus on high-end apartment renovations that respect the heritage of the building while introducing modern functionality. Whether you are planning a kitchen remodeling Manhattan project or a full gut renovation, our case studies demonstrate the craftsmanship and dedication we bring to every square inch of your home.
Tribeca: Modern Loft Reimagination
In the heart of Tribeca, we managed a full-scale loft renovation that required balancing industrial aesthetics with family-friendly functionality. The project involved stripping back decades of previous renovations to expose original brickwork and timber beams.
The client requested an open-concept living space and a chef-grade kitchen. Because this was a commercial renovation NYC style loft converted to residential use, the plumbing and electrical updates were extensive. We partner and collaborate with licensed architects and engineers as needed to ensure that every structural modification met the highest safety standards and NYC building codes.
The result was a high-end remodeling project that emphasized natural light and high-volume ceilings, creating a sanctuary in one of the city's most vibrant neighborhoods.
Related Tribeca case studies:
- Case Study: Condo Renovation – Modern Elegance in a Tribeca Landmark
- Case Study: Modern Industrial Loft Renovation in Tribeca
Upper West Side: Pre-War Restoration and Modernization
Renovating a pre-war apartment on the Upper West Side often feels like a puzzle. In this featured case study, our team was tasked with a bathroom remodeling Manhattan project and a complete kitchen overhaul in a landmarked building.
The primary goal was to modernize the utility of the home without losing the "old world" character. We installed custom cabinetry that mimicked the original woodwork while integrating smart home technology. Navigating the specific building requirements was paramount. In the UWS, many buildings have strict "wet-over-dry" rules, meaning you cannot move a bathroom or kitchen over a neighbor's bedroom. We successfully managed these restrictions to deliver a luxurious, updated floor plan.
Related Upper West Side case study:
SoHo: The Art of the Luxury Gut Renovation
SoHo renovations are defined by their scale and the need for precision. This case study involved a full apartment renovation where every wall was moved to optimize the flow of the space.
The project featured wide-plank European oak flooring and a minimalist aesthetic that required perfectly level surfaces: a difficult feat in older SoHo cast-iron buildings. Our expertise in Manhattan apartment renovations allowed us to address sagging floor joists and uneven walls before the final finishes were applied. By the time we reached the final punch list, the apartment was a gallery-like space that perfectly matched the client’s vision for high-end urban living.
Related SoHo case study:
Chelsea: Contemporary Condo Refinement
In Chelsea, we often work with newer condo buildings that require a different approach than historic brownstones. This case study focused on a kitchen and bathroom remodel that aimed for a sleek, contemporary look.
The project included the installation of floor-to-ceiling marble in the master bath and a custom-integrated kitchen. Working in active condo buildings requires strict adherence to work hours and protection of common areas. Our project management team ensured that neighbors were minimally disturbed, maintaining a clean and professional job site throughout the duration of the build.
Related Chelsea case study:
Upper East Side: Classic Elegance and Structural Integrity
The Upper East Side is synonymous with luxury. Our case study here focuses on a multi-unit combination project. We took two separate apartments and merged them into one sprawling residence.
This required extensive NYC renovation permits explained to the client throughout the process. Merging units involves structural changes that must be approved by the Department of Buildings (DOB). We handled the logistical heavy lifting, from filing permits to managing the board's resident engineer. The finished home features a grand foyer, a formal dining room, and a bespoke master suite that defines Upper East Side sophistication.
Related Upper East Side case study:
Kitchen & Bathroom Transformations
Kitchen and bathroom renovations are where you see the biggest day-to-day quality-of-life upgrades in an NYC apartment renovation. As a Manhattan general contractor, Corniel Construction LLC focuses on tight scheduling, clean job sites, and building-compliant plumbing/electrical coordination so your remodel moves forward with fewer surprises.
Related kitchen & bath case studies:
- Case Study: Kitchen Renovation – Gourmet Transformation in a Manhattan Apartment
- Case Study: Bathroom Renovation – Spa-Like Retreat in a Manhattan Condo
co-op renovation rules Manhattan
If you own a co-op, you know that your "walls-in" ownership comes with many strings attached. Co-op boards are notoriously protective of their buildings' infrastructure. Most boards have an "alteration agreement" that outlines exactly what you can and cannot do.
Key rules usually include:
- Work Hours: Typically 8:00 AM or 9:00 AM to 4:00 PM or 5:00 PM, Monday through Friday only.
- Insurance Requirements: Your contractor must carry specific levels of General Liability and Workers' Comp, often naming the co-op and the managing agent as additional insured.
- Wet-over-Dry Restrictions: As mentioned previously, you generally cannot move plumbing fixtures over a dry area in the unit below.
- Lead and Asbestos Testing: Any building built before 1978 (which is most of Manhattan) requires certified testing and potentially professional abatement.
condo renovation approval process NYC
While generally less restrictive than co-ops, condos still require a formal approval process. You will need to submit a full package to the building management, which includes:
- Architectural drawings (we partner and collaborate with licensed architects and engineers as needed).
- Scope of work description.
- Contractor's license and insurance.
- A renovation deposit (often refundable) and a non-refundable processing fee.
The approval process can take anywhere from two weeks to two months, depending on the complexity of the project and the responsiveness of the building's board or management company.
NYC renovation permits explained
In New York City, almost any renovation that goes beyond cosmetic changes (like painting or floor refinishing) requires a permit from the Department of Buildings (DOB).
- LAA (Limited Alteration Application): Often used for minor plumbing or gas work that doesn't involve structural changes.
- Alt-CO (Alteration Type 1): Required if you are changing the use, occupancy, or egress of the space (e.g., converting a commercial space to residential).
- Alt-2: The most common permit for apartment renovations where the use of the space doesn't change, but structural, plumbing, or electrical work is being performed.
Failing to secure the proper permits can result in heavy fines and a "Stop Work Order," which can derail your timeline and budget.
how long does a gut renovation take NYC
A full gut renovation in Manhattan typically takes between 4 to 9 months, depending on the size of the apartment and the level of finishes.
- Planning and Board Approval: 2 to 4 months.
- Demolition: 2 to 3 weeks.
- Rough-ins (Plumbing/Electrical): 4 to 6 weeks.
- Sheetrock and Priming: 3 to 4 weeks.
- Flooring and Cabinetry: 4 to 5 weeks.
- Finishing Touches and Punch List: 2 to 4 weeks.
Timelines can be extended by long-lead items like custom Italian cabinetry or imported stone. We recommend making all material selections early in the process to avoid delays.
how much does kitchen remodeling cost in Manhattan
For a high-quality kitchen remodeling Manhattan project, homeowners should expect to spend between $50,000 and $150,000+.
- Budget Renovations ($50k – $70k): High-quality stock cabinetry, mid-range appliances, and quartz countertops.
- Mid-Range ($70k – $100k): Semi-custom cabinetry, high-end appliances (Sub-Zero/Wolf), and specialized lighting.
- High-End ($150k+): Fully custom cabinetry, structural changes, professional-grade appliances, and premium stone surfaces.
how much does bathroom remodeling cost NYC
A bathroom renovation in Manhattan typically ranges from $25,000 to $60,000 per bathroom.
- Standard Refresh: $25k – $35k (New tile, vanity, and fixtures in the existing layout).
- Full Modernization: $40k – $60k (Moving fixtures, radiant floor heating, custom glass enclosures, and high-end marble work).
The cost is largely driven by the labor-intensive nature of working in Manhattan buildings and the high cost of luxury materials.
Your Manhattan Renovation Partner
At Corniel Construction LLC, we pride ourselves on transparency and excellence. From the initial estimate to the final walkthrough, we manage every detail of your Manhattan project. We serve New York, New Jersey, and key local markets including Manhattan and North Bergen.
Ready to transform your space?
Book Your Free Estimate
Contact us today at 347-567-1018 to discuss your upcoming project.
