FDNY Form Guide · A-433

The FDNY A-433 Form, Explained

The A-433 is the application that gets your finished fire alarm system inspected — with the strictest formatting rules of any FDNY form. This guide covers every section, the device schedule, and how to generate a filled A-433 from just an address.

The Basics

What Is the A-433?

The A-433 (current revision A-433C) is the application filed with the FDNY's Fire Alarm Inspection Unit to have a completed fire alarm installation inspected. Where the TM-1 opens the job, the A-433 closes it: it documents who installed the system, who monitors it, and exactly which devices went in on every floor.

Two rules make this form notorious. First, a separate application is required for each system installed. Second, the formatting requirements are strict: every question answered, all information typed, printed duplex on a single sheet of legal-size paper (8.5" × 14"). Buildings with more floors than the form fits need an additional A-433C.

The official form is published on nyc.gov. The system must be tested and free of all defects before the inspection is requested — defects found on inspection day mean a deficiency letter and a retest.

Section by Section

What the A-433 Asks For

1 · Premises Information

Building number, street name, borough, ZIP, and the floors where work was performed. Must match your approved plans and the DOB record for the building.

2 · Owner Information

The building owner's name, business name, address, and contact details.

3 · Electrical Contractor

Name, license number, and business details of the licensed electrician responsible for the installation.

4 · Fire Alarm Vendor

The servicing company and the holder of the Certificate of Fitness (S-97) who maintains the system.

5 · Central Station

The central station monitoring the system: business name and station code.

6 · Device Schedule

The floor-by-floor count of every device installed — smoke detectors, pull stations, horn/strobes, and the rest. This grid is where inspections are won or lost.

Avoid the Deficiency Letter

Why A-433 Packages Fail

Device counts don't match the plans. The schedule must agree with the FDNY-approved floor plans and the as-built riser diagram — a single miscounted strobe can flag the package.
Handwritten entries. All information must be typed. Handwritten forms are returned.
Wrong paper format. Not duplex, not legal size, or split across two sheets — formatting alone can bounce the submission.
Floor coverage mismatch. The floors listed under "work on floor(s)" must line up with where devices actually appear in the schedule.
Missing S-97 or central station code. The vendor's Certificate of Fitness and the central station identification are both required.
Incomplete attachments. Approved plans, TM-1, TB-60 (where applicable), and the as-built riser diagram belong with the submission.

Requirements change — verify current instructions with the FDNY Fire Alarm Inspection Unit and the official A-433C form before filing.

From Address to Filled A-433 in 3 Steps

01
Enter the Address or BIN

Fire PDF Pro pulls the premises data straight from NYC DOB records — building number, borough, ZIP — with no BIS digging.

02
Build the Device Schedule

Pick devices and floors in the visual builder; the floor-by-floor grid is assembled and formatted for you, and your contractor, vendor, and central station profiles fill themselves.

03
Download the A-433 PDF

An exact replica of the official A-433C, ready to print duplex on legal paper, sign, and submit with your package.

A-433 Questions, Answered

The A-433 (current revision A-433C) is the application filed with the FDNY Fire Alarm Inspection Unit to have a completed fire alarm installation inspected. It documents the premises, owner, electrical contractor, fire alarm vendor, central station, and a device schedule listing every device installed per floor. A separate application is required for each system installed.

All questions must be answered, all information must be typed (not handwritten), and the form is printed duplex on a single sheet of legal-size paper (8.5" × 14"). Buildings with more floors than the form allows require an additional A-433C for the remaining floors.

The inspection package typically includes a set of FDNY-approved floor plans, the TM-1, a TB-60 where applicable, and an as-built riser diagram at the time of submission. The system must be tested and free of all defects before requesting inspection.

It is the floor-by-floor count of every fire alarm device installed — smoke detectors, pull stations, horn/strobes, and so on. The counts must match the approved plans and the as-built riser diagram; mismatches are one of the most common causes of failed inspections and deficiency letters.

Yes. Fire PDF Pro pulls the premises data from NYC DOB records, loads your saved contractor, vendor (COF S-97), and central station profiles, and builds the floor-by-floor device schedule from the devices you select — then generates an exact replica of the official A-433 PDF ready to print duplex and sign.
Related FDNY Forms

TM-1

The plan examination application that opens every fire alarm job — filed before work starts, with your design documents.

B-45

The inspection request form that gets the FDNY Fire Alarm Inspection Unit to your finished, defect-free system.