Manhattan, NY
Interior Demolition in Manhattan
We take a space back to whatever your next stage needs. Bare structure, a clean shell, or something in between, with the parts that are staying protected and untouched.
What comes out, and what stays
Interior demolition is the inside of a building coming out while the building stays up.
In Manhattan the list of what stays is longer than almost anywhere, and getting it wrong is the expensive mistake in this trade. Sprinkler and standpipe. Risers and shafts serving floors that are not yours. Base building services a landlord requires back exactly as found. Fire-rated construction that is doing a job even when it looks like a partition. In a prewar loft, structure that has been boxed in so thoroughly that it reads as joinery.
So we mark up the keep list in the space with you before the first day rather than working from a drawing alone. Then out goes the fit-out: partitions, ceilings and grid, floor coverings and the screed or mortar bed under them, millwork and casework, shopfronts, kitchen and bar installations, redundant mechanical and electrical, and the pipe and cable behind them. Plaster back to masonry where the design asks for it.
Partial is normal. Three walls and a ceiling out of an occupied office floor is a real scope and we run it as one. In the trade that is selective demolition, and it is most of the interior work in this borough. We are the interior demolition contractor on the job rather than the whole renovation, working for general contractors, construction managers, architects, owners and managing agents across Manhattan.
Why the schedule is arithmetic before it is anything else
01 The freight car
A share of one lift, in hours somebody else sets
In most of the prewar loft stock the freight elevator is the only way in and out for the crew and for every pound of material, and it is shared with every other trade in the building.
That makes the programme a calculation rather than an estimate. Hours released, multiplied by what the car takes per trip, gives the material that can leave in a day, and the floor is clear when the material has gone. Extra labour on the floor does not change the number. We establish it with the managing agent before pricing, and we stage material so it is ready the moment the car is.
02 The stair
Buildings with no lift at all
In the Village, the East Village, the Lower East Side and much of the older walk-up stock there is no freight elevator to book. Every load leaves on somebody's shoulder, down a stair built narrow and turning twice, onto a sidewalk with pedestrians on it.
Treads and handrails are boarded for the duration, loads are sized to what one person can carry safely, and the crew works as a chain. It costs more per ton and it never waits for anyone's permission, which on a fixed date is worth more than it sounds.
03 The curb
There is nowhere else for it to go
No driveways and no yards. Everything that leaves a Manhattan building ends up on a public street, in a container standing under a permit, in a space that may be metered or restricted and is certainly in demand.
Where that container can stand and how often it can be swapped is settled before we price, because on a tight downtown street it is a harder arrangement than anything happening inside the building.
Permits and building access, before the first wall
Three gates the city does not control decide most Manhattan start dates.
There is a Department of Buildings sequence, and it applies here exactly as it does everywhere else in New York. But on a Manhattan interior job it is usually not the thing that decides your start date. Three others are, and none of them belongs to a city agency.
The building's own approval. A co-op or condo alteration agreement is a private contract, and the board that signs it may meet once a month. It sets hours that are frequently narrower than the city's, names the insurance it wants, and decides what protection the common parts get. The freight allocation. In most of Manhattan's prewar loft stock the freight elevator is the only way in and out for the crew and for every pound of material. What the building releases, and when, is the real programme. The curb. There are no driveways in Manhattan. Every container stands on a public street under a permit, in a space that is metered, restricted or already spoken for. Settle those three early and the city's part of the sequence usually runs alongside them without ever being the reason nothing has started.
First question: does your job need a filing at all? Work needs a Department of Buildings permit when it touches something the city takes an interest in: anything structural, egress, plumbing, gas, sprinkler or standpipe work, or a change of layout that alters use, occupancy or the number of rooms in an apartment. It generally does not when the work is finishes and fixtures. Lifting flooring, removing casework and millwork, stripping plaster back to masonry, taking out a partition that touches none of the above. Size is not the test. A large apartment reduced to bare walls can need nothing, and one wall in the wrong place can need a design, a filing and an engineer.
Work needing no permit needs no asbestos filing and no Landmarks certificate either, and in a building with a co-operative board it may still need the board's approval, because the building's rules are not the city's. The architect or engineer of record makes this call, and in a prewar Manhattan building it is worth having made in writing. Plaster on masonry hides more than drawings show, and partitions in a loft floor that has been reconfigured three times are not always what the last set of plans says they are.
The city's part, in order
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Step 1 of 6
The asbestos assessment
Most of Manhattan's building stock predates 1 April 1987, which is the date that matters. For permitted work in a building put up before it, a DEP certified asbestos investigator inspects the areas the work will disturb and files with the Department of Environmental Protection before the permit can issue.
Where nothing your work will disturb is found, or what is there sits below the DEP thresholds of ten square feet or twenty five linear feet of friable material and will not be disturbed, Form ACP-5 is issued. Where the investigator determines the work is an asbestos project, abatement by a separately licensed contractor comes first and is evidenced before the permit process moves on. That branch is the difference between a start date slipping by days and by weeks, and it is the reason this step goes first. It is the owner's filing, and ordering it late is the most common single reason a Manhattan start date moves.
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Step 2 of 6
Design and filing
Anything structural needs a registered architect or engineer to design it and file it. In a prewar loft building that includes cutting an opening in a slab, altering anything carrying a shared riser, and removing a wall that is doing more than dividing two rooms.
Demolition inside a larger fit-out is normally filed with it as one job. The permit issues to the licensed contractor performing the permitted work.
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Step 3 of 6
Landmarks, on a designated address
SoHo, Tribeca, NoHo, Greenwich Village and a long list of blocks uptown and downtown sit inside historic districts, and the rule is commonly stated backwards. The trigger is the permit, not the exterior. Where a building is an individual landmark, stands in a historic district, or contains an interior landmark, and the work requires a Department of Buildings permit, the Department of Buildings may not issue that permit until the Landmarks Preservation Commission has issued a certificate. Whether anyone can see the work from the sidewalk decides which certificate you get, not whether you need one.
The genuine reassurance is the level and the speed. Where the work does not affect the building's protected architectural features, and a strip-out normally does not, the instrument is a Certificate of No Effect. It is issued by Landmarks staff, with no public hearing and no community board presentation, and a complete application is commonly approved in about ten business days. Certain interior work qualifies for an expedited certificate that comes back in about two. A building with a designated interior landmark is a stricter and rarer case, worth establishing early rather than discovering during design.
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Step 4 of 6
The alteration agreement and the certificate of insurance
The building's own approval runs in parallel and often outlasts the city's. Drawings, insurance naming the building and the managing agent, a deposit, a schedule, and the rules the job will run to.
Boards frequently meet monthly. A job that misses one agenda waits for the next, and no amount of speed anywhere else in the sequence recovers it.
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Step 5 of 6
Hours, and a variance if the schedule needs one
Construction activity runs 7:00 AM to 6:00 PM on weekdays. Anything outside that needs an After Hours Variance from the Department of Buildings, filed a few business days ahead and covering days inside a fourteen consecutive day window. The rule covers construction activity rather than noisy machinery, so quiet weekend work needs one as well.
The city's window is the outer limit rather than your working day. A residential building will usually give you less, and some buildings bar work entirely around holidays or in summer months.
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Step 6 of 6
Freight and the curb
The last thing settled and the first thing that governs the job. How many hours of freight you get and on which days, whether the car takes a full container of material or a quarter of one, and where a container can legally stand on the street outside.
We work this out with the managing agent before we price. A scope is meaningless in this borough until you know how fast material is allowed to leave the building.
Who carries which step
The asbestos assessment, the design filing, the Landmarks certificate and the alteration agreement are the owner's, the design professional's or the building's to carry out. The freight allocation, the container and the route out are ours to settle with the managing agent before we price.
What we do on the first call is tell you which of them your job triggers and in what order, so the date you promise is one you can hold. Send us the alteration agreement and we will read it. See how the building stock changes the job across the borough.
A stripped floor with the columns exposed
How we work in a live building
Protection first
Lobby floor, corridors, door frames and the freight cab covered before anything comes down. It is faster to protect a lobby than to repair one, and the managing agent sees it before anything else.
Dust control
Openings sealed, negative pressure where it is warranted, and cutting kept wet where the material allows. The tenants on the floors above notice dust long before they notice noise.
Noise in windows
Loud work is grouped and run inside the hours the building and the city allow, so it is predictable for everyone else in the stack.
Daily clear-down
The space is left safe and swept at the end of each day. Nothing is stored in a corridor, a stairwell or a lobby overnight.
Common questions
What is interior demolition?
Taking out the inside of a building while the building itself stays up. Walls, ceilings, floors, fittings and services come out. The structure, the facade and usually the windows stay.
It is what most people mean when they say a space needs gutting before a fit-out or a renovation, and in Manhattan it is almost the whole of the demolition market.
What is the average cost for interior demolition?
There is no useful average, because the same square footage can differ several times over in price.
Here the dominant variable is the route out. An office floor of drywall partitions with a booked freight slot is straightforward. The same area of plaster on masonry, four floors up a walk-up, with tile beds to lift and a container permit to arrange, is a much larger job for the same drawing. The gap between those two is wider in this borough than anywhere else in the city.
We walk the space, price the actual scope, and say which parts could still move once the walls are open. Tell us your date when you call and we will tell you what we can hold.
Does my job need a Department of Buildings filing at all?
It does when the work touches something the city takes an interest in: anything structural, egress, plumbing, gas, sprinkler or standpipe work, or a change of layout that alters use, occupancy or the number of rooms in an apartment. It generally does not when the work is finishes and fixtures.
Size is not the test. A large apartment reduced to bare walls can need nothing, and one wall in the wrong place can need a design, a filing and an engineer. The architect or engineer of record makes the call, and in a prewar building it is worth having made in writing. A co-op board may still want its own approval either way, because the building's rules are not the city's.
Do I need an asbestos assessment before interior demolition can start?
If the building was built before 1 April 1987 and the work needs a Department of Buildings permit, then yes, one has to be filed before that permit is issued. That covers most of the buildings in Manhattan.
A DEP certified asbestos investigator inspects the areas the work will disturb and files Form ACP-5 with the Department of Environmental Protection. Where material is present but sits under the DEP thresholds and will not be disturbed, the ACP-5 can still be issued.
It is the customer's own filing and not part of a demolition contract, and the permit waits on it, so order it early.
Does a historic district mean I need Landmarks approval?
For permitted work, yes. The trigger is the permit rather than whether the work is visible from the street.
The part worth knowing is what the approval actually is. Where the work does not affect protected architectural features, Landmarks issues a Certificate of No Effect at staff level, with no hearing and commonly inside about ten business days, and there is an expedited route for certain interior work that returns in about two.
Filed at the front of the sequence it is close to invisible. Filed late, on a SoHo or Village address, it is the reason the floor is still standing.
What hours can demolition work happen in New York City?
Construction activity may be carried out from 7:00 AM to 6:00 PM on weekdays. Anything outside that needs an After Hours Variance from the Department of Buildings, filed a few business days before the first day and able to cover days inside a fourteen day window.
In this borough the building is usually the tighter of the two. A co-op alteration agreement routinely sets narrower hours than the city allows, and some buildings bar work entirely around holidays. Where the two differ, the building's rules decide your schedule.
What happens to the debris?
Clearing it is part of the job. You do not have to arrange it separately.
Material is broken down, bagged or bundled and staged on protected floor inside the work area, then moved in the freight windows the building releases, or carried down the stair where there is no lift. Carting off site is done by a registered carting company and we coordinate the two halves so they line up.
Nothing sits in a corridor or a stairwell overnight, and nothing is left staged where the building has not agreed it can be. You get the space back swept and clear.