01
Strategic demolition
Protect building systems and structural integrity, follow NYC debris removal protocols, contain dust for neighboring units, and schedule debris removal per building guidelines.
Manhattan / Full gut renovation
Full Gut Renovation in Manhattan
A full gut is not a single demolition event. Corniel Construction coordinates existing-condition discovery, systems work, approvals, protection, procurement, and finish decisions.
The planning figure
Plan for 9–12 months total.
The company planning figure includes 3–5 months for design and pre-construction, 4–7 months for construction, and about 1 month for close-out with a Letter of Completion. A project-risk review helps surface scope and schedule issues before work begins.
01 / Design & pre-construction
3–5 months
Planning, approvals, filings, procurement, and site readiness.
02 / Construction planning
4–7 months
Active construction: 4–6 months (16–24 weeks) once permits are issued.
03 / Close-out
~1 month
Punch list, closeout documentation, and Letter of Completion. Final inspections are typically 1–2 weeks.
What changes behind the finish
Open the walls with a plan.
02
Plumbing modernization
Replace galvanized or cast-iron lines with modern materials, add supply lines and waste stacks, relocate bathrooms or kitchens when feasible, plan for high-rise water pressure, and provide fixture shut-off valves.
03
Electrical overhaul
Coordinate panel upgrades, new wiring, dedicated circuits for major appliances, smart-home integration, and USB charging.
04
Custom carpentry & millwork
Use built-in storage for Manhattan’s limited square footage, custom cabinetry, closet systems, and pre-war restoration of picture rails, wainscoting, decorative moldings, window casings, door frames, crown molding, and baseboards.
ILLUSTRATIVE EXAMPLES
AI-generated illustration. Not a completed Corniel project.COMPLETED CORNIEL PROJECTS
What we manage
The surrounding work stays visible.
- Architect and engineer coordination, including licensed professionals and stamped drawings for DOB.
- DOB filings, including Alt-2 or Alt-3 depending on scope.
- Board approval packages with plans, schedules, insurance certificates, and contractor information.
- Subcontractor sequencing from demolition through finishes.
- Building management compliance for elevator reservations and noise hours.
- Material procurement and delivery through tight Manhattan spaces.
We help coordinate filings through licensed professionals when required.
Final approvals are determined by the building, board, or applicable agency.
Planning a Manhattan full gut?
Start with the conditions behind the walls.
Bring the apartment, the building requirements, and the scope you are considering. The first step is a clearer plan.