What the ACP-5 actually is
The ACP-5 is an Asbestos Assessment Report. It is issued by a DEP-certified asbestos investigator, filed electronically with the New York City Department of Environmental Protection, and verified by the Department of Buildings before a construction permit is issued.
What it certifies is narrow and specific: that your project will not disturb asbestos-containing material, or that any such material present sits below the DEP threshold and will not be disturbed.
When you need one
The trigger is a combination of three things: renovation, alteration, modification or demolition work; a building constructed before 1 April 1987; and work that requires a DOB permit.
The date matters more than most people realise. The overwhelming majority of New York City housing stock predates April 1987, which means the majority of permitted work in this city needs an ACP-5. It is the norm, not the exception.
The threshold
An ACP-5 can be issued where asbestos-containing material is present but the quantity falls under the DEP threshold and will not be disturbed. That threshold is less than 10 square feet or 25 linear feet of friable asbestos-containing material.
"Friable" means material that can be crumbled by hand pressure and therefore release fibre. It is why pipe lagging is treated more seriously than intact floor tile.
Where it usually turns up
In the buildings we work in, the same handful of materials come up again and again.
- Pipe and boiler lagging. Friable, and the most serious of the common finds.
- Nine-inch floor tile and the black cutback adhesive under it. Extremely common in buildings up to the late seventies.
- Corrugated cement roof and wall sheeting on garages and outbuildings. Non-friable while intact, which is exactly why it must not be broken up.
- Joint compound and textured coatings.
- Textured and popcorn ceiling coatings in buildings finished before the early eighties.
- Vermiculite insulation in older roof spaces.
None of these should be lifted, pulled or opened up to identify them. Disturbing suspect material to find out what it is defeats the entire point of the rule.
What happens if it comes back positive
Above threshold, the answer is abatement, not a different report. The material has to be removed by a licensed abatement contractor under a separate permit before demolition can proceed.
That changes the programme and the cost, and it is far better to know in week one than in week six. It is the main reason we push clients to instruct an investigator immediately rather than at the end of the design process.
One extra requirement for full demolition
On a full demolition an ACP-5 is also required before the job can be signed off, covering the demolished structure. So the form appears twice in the process: once before the permit issues, and once before you can close the job out. Where abatement was needed, the abatement contractor’s own clearance paperwork is what evidences the removal — the ACP-5 records the assessed position, it does not certify that a removal happened.
And what it is not
An ACP-5 is not an asbestos removal certificate, it is not proof that a building is asbestos free, and it is not something a contractor can self-declare. It is a report signed by a certified investigator about a specific scope of work. Change the scope materially and the assessment may no longer cover you.
