Corniel Construction has established itself as a premier NYC renovation contractor with substantial hands-on renovation experience. Our Manhattan renovation experience allows us to navigate the unique complexities of high-end residential remodeling, from strict co-op board approvals and "wet-over-dry" restrictions to the intricate Department of Buildings (DOB) permit process. We pride ourselves on being a technical planning partner for property owners who demand precision and transparency.
Who This Page Is For
This guide and company milestone overview is designed for:
- Manhattan Homeowners: Those planning a high-end kitchen, bath, or full apartment remodel.
- Prospective Buyers: Individuals looking to understand the feasibility of a property before closing.
- Architects & Designers: Professionals seeking a reliable general contractor who understands technical constraints and building management requirements.
- Property Managers: Decision-makers looking for a vetted contractor with a proven track record in luxury buildings.
A Legacy of Quality: The Corniel Story
Corniel Construction was built around a simple goal: provide high-quality craftsmanship with a level of project management rarely seen in the NYC residential market. We have grown from a small team focusing on local interior remodeling to a general contracting firm specializing in complex Manhattan condo and co-op renovations.
The New York City real estate landscape is unforgiving. A contractor without deep local roots can easily be overwhelmed by building-specific alteration agreements or evolving DOB regulations. By maintaining a focus on technical planning and clear communication, we have successfully delivered hundreds of projects that enhance both the aesthetic value and the structural integrity of New York homes.

Manhattan Renovation Experience
To successfully renovate in Manhattan, a contractor needs more than just a hammer and a nail; they need a deep understanding of the city's "red tape." Our experience highlights include:
- Manhattan renovation experience: A track record focused on stable project delivery and consistent coordination.
- Experience with Manhattan condo and co-op renovation processes: Navigating the specific demands of building boards and management companies.
- Familiarity with alteration agreements and building requirements: Ensuring all work complies with the specific legal and technical constraints of your building.
- Coordination of full apartment renovations and interior remodeling: Managing every trade from plumbing and electrical to high-end finish carpentry.
- Commitment to planning renovations correctly before construction begins: Identifying potential "deal-breakers" early to prevent costly mid-project delays.
The Importance of Technical Planning
One of the core values we have refined over time is the "Planning First" mentality. Manhattan apartments are often decades (or even a century) old. We partner and collaborate with licensed architects and engineers as needed to ensure that every design is structurally sound and code-compliant.
Whether you are looking into the Manhattan Apartment Renovation Guide or trying to decipher NYC co-op renovation rules, we serve as your technical advocate. We identify where plumbing can be moved, where load-bearing walls might exist, and how to maximize your square footage within building constraints.
Schedule a Manhattan Renovation Consultation
how much does kitchen remodeling cost in Manhattan
Kitchen remodeling in Manhattan typically starts at a higher price point than in other regions due to labor costs, insurance requirements, and logistics. Kitchen pricing is confirmed after scope review and depends on cabinetry, appliances, stone fabrication, plumbing or gas relocation, electrical capacity, building logistics, and finish selections. For scope expectations, see the Manhattan kitchen renovation guide. Factors such as the age of the building's plumbing and the need for new gas lines significantly impact the final budget.
Disclaimer: All renovation costs provided are preliminary estimates. For a detailed breakdown, please refer to our Renovation Terms & Disclaimer.
Planning a Manhattan renovation? Try our Manhattan Renovation Budget Estimator for a preliminary cost projection.
how much does bathroom remodeling cost NYC
Bathroom pricing is confirmed after scope review and depends on plumbing conditions, waterproofing, layout changes, tile and stone selections, specialty fixtures, building requirements, and access. For typical scope and finish decisions, review the Manhattan bathroom remodeling guide. Because some Manhattan buildings enforce wet-over-dry restrictions as part of their alteration agreements, bathroom relocation should be checked against the current building rules and existing plumbing conditions before design and material decisions are finalized.
Disclaimer: All renovation costs provided are preliminary estimates. For a detailed breakdown, please refer to our Renovation Terms & Disclaimer.
To pressure-test your numbers before you finalize drawings, use the Manhattan Renovation Budget Estimator for a quick preliminary range.

co-op renovation rules Manhattan
Co-op renovation requirements vary by building. The alteration agreement may address approved work hours, insurance limits and endorsements, deliveries, protection, debris removal, deposits, and other construction procedures that should be confirmed with management before scheduling. For a deeper breakdown of board expectations, forms, and common restrictions, see the NYC co-op renovation rules. Our Manhattan renovation experience means we know how to speak the language of building supers and management agents, ensuring your project doesn't get stalled before it starts.
condo renovation approval process NYC
While generally more lenient than co-ops, Manhattan condos still require board approval for structural, plumbing, or electrical changes. You will likely need to submit a full set of architectural drawings and wait for a review by the building's designated engineer. For step-by-step planning in condo buildings, see the Manhattan condo renovation guide. We help streamline this by providing the necessary insurance certificates and site-safety plans required for approval.
how long does a gut renovation take NYC
A full gut renovation schedule is project-specific and depends on design completion, building and board review, applicable agency filings, procurement lead times, access, approved work hours, inspections, existing conditions, and the final construction scope. For a fuller overview of sequencing and constraints, reference the Manhattan apartment renovation guide.
NYC renovation permits explained
The applicable DOB filing and permit requirements depend on the proposed work and are confirmed by the licensed design professional for the specific scope. Changes involving plumbing, electrical, structure, egress, mechanical systems, use, or occupancy can affect the filing strategy. For a broader view of rules, costs, and approvals that tie into permits, review the Manhattan renovation permits, costs, and condo/co-op board approval guide. We work closely with expeditors, professionals who manage DOB permit filings, track approvals, and coordinate documentation between architects and the city. Expeditors do not design the space, but they are essential for moving paperwork through the system quickly.

The Value of Longevity
Hiring a contractor that has established Manhattan renovation experience provides a level of security that "new" firms cannot match. It means we have established relationships with local vendors, a deep understanding of the NYC building code, and a portfolio of completed work in buildings just like yours. Our commitment to the tri-state area, specifically Manhattan and North Bergen, ensures that we are always available to stand by our work long after the project is complete.
For more information on budgeting, visit our Manhattan Renovation Cost Guide. For a quick preliminary range based on scope and finishes, use the Manhattan Renovation Budget Estimator.
Disclaimer: All renovation costs provided are preliminary estimates. For a detailed breakdown, please refer to our Renovation Terms & Disclaimer.
Is Your Manhattan Renovation Budget Realistic?
Many homeowners underestimate the "soft costs" of NYC renovations, such as architectural fees, expeditor fees, and building protection requirements. Before you swing a sledgehammer, it is vital to have a realistic understanding of what your vision will cost in the current Manhattan market.
Planning a Manhattan renovation? Call or text 347-567-1018 to discuss your project.
Frequently Asked Questions
Does Corniel Construction handle the board approval process?
We provide all the necessary contractor-related documentation required by your board, including insurance (COI), licenses, and detailed scopes of work. We work alongside your architect to answer any technical questions the board’s engineer may have.
What is the "wet-over-dry" rule?
Wet-over-dry is a building policy, not a universal NYC law. Some buildings restrict moving kitchens, bathrooms, or other wet areas over dry rooms below to reduce leak and waterproofing risk, so the current alteration agreement should be reviewed before changing the layout.
Are you licensed and insured for Manhattan luxury buildings?
Yes. Corniel Construction LLC is fully licensed, bonded, and insured. We provide project insurance documentation for review against the specific building’s current limits, endorsements, and Additional Insured requirements.
Do you provide design services?
We are a general contracting firm focused on the construction and technical planning of your project. We partner and collaborate with licensed architects and engineers as needed to bring your design to life while ensuring it meets all NYC building codes.
How do I get an estimate for my project?
The best way to start is to Schedule Your Consultation or text us at +1 347-567-1018 with your project details and building location.

