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Required by NYC HMC Section 27-2045

Smoke Detectors and CO Notice

SKU HPD-SMOKE-03 · Combined smoke and carbon monoxide detector notice

Who needs it: NYC apartment buildings with 3 or more apartments (Class A multiple dwellings).

One notice for the building’s common area

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About the Smoke Detectors and CO Notice

HMC Section 27-2045 and HPD’s rules require Class A multiple dwellings to post a notice about smoke and carbon monoxide detector requirements. Under 28 RCNY Section 12-12.1, one combined notice covers both, which saves wall space in small lobbies.

Buildings with gas piping also need natural gas detector notices, due January 1, 2027, and HPD allows those on the same combined notice. Ask us for the combined version.

Where to post it

  • At or near the mailboxes, in a common area every tenant passes.

Questions about this sign

Yes. HPD allows a combined notice. Tell us you need natural gas detector wording and we will print the combined version.

January 1, 2027, for buildings with gas piping, under Local Law 102 of 2025. The date could change, so check HPD's page.

Since February 2, 2026, HPD allows certain notices on a digital sign. If you go digital, every eligible notice must be digital. Most buildings keep printed signs.

Specifications
Size 8.5 x 9.5 in.
Code NYC HMC Section 27-2045
Rule 28 RCNY Section 12-12.1
Mounting Pre-drilled holes or double-sided tape
Use Indoor
Made in Brooklyn, NY

Smoke Detectors and CO Notice delivered across NYC

Same rules in every borough. Orders over $200 ship free anywhere in New York City.

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