Fire Alarm Estimating and Takeoff Services

We quantify fire alarm systems from your drawings — initiating and notification devices by type, circuits by count and routed length, panel and power supply capacity, and every interface to other building systems — delivered as an editable Excel workbook with the marked-up plan set.

Get a Free Quote

What We Take Off

Counting devices is the straightforward half of a fire alarm estimate. The engineering is in the notification appliance circuits: candela ratings set by room size and use, voltage drop over the run limiting how many appliances share a circuit, and the number of circuits driving the power supplies and panel capacity. A device count with a unit rate applied has priced hardware and not a system.

Control panel and peripheralsmain panel, annunciators, remote annunciators, network nodes and the point capacity the device count actually requires, with spare capacity where specified

Power supplies and batteriesbooster power supplies sized to the notification load, with battery calculations for the required standby and alarm duration

Initiating devicessmoke detectors, heat detectors, duct detectors, beam detectors, aspirating detection and manual pull stations counted by type and by mounting condition

Duct smoke detectorscounted against the mechanical equipment schedule, since these are driven by air handler size and are located on mechanical drawings rather than fire alarm plans

Notification applianceshorns, strobes, horn-strobes, speakers and speaker-strobes counted by type with their candela rating, since candela drives both current draw and unit cost

Candela ratingsestablished per space from room dimensions and use, because a strobe in a corridor and a strobe in a large open area are different appliances at different ratings

Notification appliance circuitscounted and routed, with voltage drop calculated so the number of appliances per circuit reflects what the circuit can actually carry

Initiating device circuits and addressable loopscounted with the device capacity per loop and the routing between devices

Conductor and racewayby type, size and routed length, with fire-rated cable, conduit and plenum-rated cable separated since the specification and the ceiling condition decide which applies

Monitoring interfacessprinkler flow and tamper switches, standpipe, fire pump status and any suppression system interface, flagged as coordination items with those packages

Elevator interfacerecall, shunt trip and hoistway detection, which is a code-required interface with the elevator and electrical packages and a very common coordination gap

HVAC interfacefan shutdown, smoke control and damper control, coordinated with the mechanical package

Door hardware interfacemagnetic hold-opens, access control release and door position monitoring, coordinated with the hardware and security packages

Emergency communicationwhere a voice evacuation or emergency communication system is required, amplifiers, speaker circuits, message storage and paging interfaces as their own scope

Mass notificationwhere specified, the additional appliances, controls and interfaces that go beyond fire alarm requirements

Remote monitoringthe communicator, its transmission path and the connection to the central station

Design, permitting and submittalshop drawings, battery and voltage drop calculations, and submission to the authority having jurisdiction, which is a real engineering activity on the critical path

Testing, commissioning and acceptancepoint-to-point testing of every device, the acceptance test with the authority present, and the record documentation required at closeout

How Fire Alarm Quantities Are Measured

Every quantity below is reported in the unit the scope is actually bought and bid in — not converted into a single convenient unit that hides where the cost sits.

Initiating devicesEA by typeSmoke, heat, duct and pull stations by type and mounting condition. Ceiling height changes the detector spacing.

Duct detectorsEA by air handlerCounted against the mechanical equipment schedule. They live on mechanical drawings, not fire alarm plans.

Notification appliancesEA by type and candelaCandela rating drives current draw and unit cost. A device count without ratings is not a quantity.

Notification circuitsEA with voltage dropCounted after calculating how many appliances a circuit can actually carry over its routed length.

Addressable loopsEA by device capacityWith the device capacity per loop, which decides how many loops and therefore how much panel capacity.

Power suppliesEA sized to loadBooster supplies sized to the notification load, with battery calculations for standby and alarm duration.

Panel capacitypoints and sparePoint capacity against the actual device count plus any specified spare capacity.

Conductor and racewayLF by type on routed pathFire-rated cable, conduit and plenum cable separated, measured routed rather than plan-flat.

InterfacesEA by systemElevator, HVAC, sprinkler, door hardware and access control, each a coordination item with another package.

Voice evacuationby amplifier and circuitAmplifiers, speaker circuits and message storage as their own scope where required.

TestingEA per device pointPoint-to-point testing of every device plus the witnessed acceptance test.

Design and submittalby systemShop drawings, battery and voltage drop calculations and AHJ submission — engineering on the critical path.

Who This Is For

General contractors carrying this trade directly, or checking a subcontractor's number before it goes into the bid.

Subcontractors pricing their own scope in this division.

Developers and owners validating a number they've already been given.

Material suppliers and distributors verifying a customer's order.

What You Receive

An itemized Excel takeoff, organized by division
A marked-up plan set — every quantity traces back to a location on the drawings
Labor, material and equipment split out separately
Waste and overage factors shown as visible line items
An assumptions and exclusions schedule

Marked-up fire alarm plan crop

What Moves the Number on Fire Alarm

Candela ratings and notification load. The visible notification requirement in a space depends on its dimensions and use, and higher candela appliances draw more current. Current draw limits how many appliances share a circuit, circuit count drives power supply count, and power supplies drive panel and battery sizing. A device count without candela ratings cannot produce any of that chain, which is why it is not a quantity.

Voltage drop and circuit routing. A notification circuit is limited by voltage drop over its actual routed length, not by a nominal appliance count. A long run in a large building carries fewer appliances per circuit than a short one, which means more circuits, more conductor and more power supplies. This is calculated, not estimated by rule of thumb.

System interfaces. Elevator recall and shunt trip, HVAC fan shutdown and smoke control, magnetic hold-opens, access control release and sprinkler monitoring are all code-required interfaces to other packages. Each needs conductor, a relay or module, and coordination with a different subcontractor, and the elevator interface in particular is a classic gap where nobody has claimed the scope.

Voice evacuation and emergency communication. Where the occupancy requires voice evacuation, the system is a different animal — amplifiers, speaker circuits, message storage, paging interfaces and survivability requirements for the circuits. It is substantially more expensive than a horn-strobe system and the requirement comes from the occupancy classification.

Cable type and ceiling condition. Plenum-rated cable, fire-rated survivable cable and conduit are three different material and labor costs, decided by the specification and by whether the ceiling space is a plenum. On a building with exposed structure the entire distribution may need conduit, which is a different job from cable in an accessible ceiling.

Existing systems and phased work. Replacing or extending a fire alarm system in an occupied building means the existing system stays operational throughout, with temporary measures, phased cutover, fire watch during outages and out-of-hours work. That is frequently more expensive than the new equipment.

Design, submittal and acceptance. Fire alarm is contractor-designed with shop drawings, battery calculations and voltage drop calculations submitted to the authority having jurisdiction. Then every device is tested point to point and the system is accepted in a witnessed test. Both ends of that are real duration, and occupancy depends on the second one.

What We Need From You

A complete set is ideal, but rarely what exists. Send what you have — we will tell you at quote stage what can be quantified firm and what has to be an allowance.

Fire alarm drawings with device locations, or architectural plans where the system is contractor-designed
Life-safety plans showing occupancy, exits and rated construction
Specification section for Division 28 fire detection and alarm, including whether voice evacuation is required
Reflected ceiling plans, for ceiling heights, plenum condition and device mounting
Mechanical equipment schedule, for duct detector counts and fan shutdown interfaces
Elevator drawings and specifications, for recall, shunt trip and hoistway detection
Door hardware schedule, for hold-open, release and monitoring interfaces
Electrical drawings for power supply to the panel and to booster supplies
Fire protection drawings, for flow, tamper and fire pump monitoring points
For renovation: existing system information, make and model, and whether it can be extended

How It Works

1 Send your plans — PDF, DWG, DOC, images or ZIP, up to 100MB per file.
2 Get your quote — a flat price for the scope with a delivery date, confirmed in writing.
3 Approve — nothing starts until you confirm.
4 We take it off — quantities from the drawings and schedules.
5 Delivery — workbook, marked-up set, assumptions schedule.

How Pricing and Turnaround Work

Every project is priced individually from your drawings. Send the plan set and you get a flat quote for the scope before any work starts — no hourly billing, no open-ended engagement.

Turnaround depends on the size of the package and how many trades are in scope — which is why you get a firm delivery date with your quote rather than a generic promise.

Tools and Standards

Takeoffs are produced in Bluebeam, PlanSwift, Trimble, STACK, organized against CSI MasterFormat divisions — this scope is specified under Division 28 — Electronic Safety and Security (28 31 00 Fire Detection and Alarm).

Quantities and assemblies are read against the published standards that govern this trade, because the standard is what decides whether two apparently identical items are actually the same line item:

NFPA 72 — National Fire Alarm and Signaling Code, which governs device spacing, notification and circuit requirements
NFPA 101 — Life Safety Code
NFPA 70 (NEC) Article 760 — fire alarm systems wiring
ADA Standards for Accessible Design and ICC A117.1 — visible notification appliance requirements
UL 864 — control units and accessories for fire alarm systems
UL 268 / UL 521 — smoke and heat detector standards
ASME A17.1 — elevator code provisions governing recall and shunt trip interfaces

Pricing is built on RSMeans cost data localized to your project's market, then reconciled against current supplier quotes and our own completed project costs. Every estimate states its pricing basis and the date it was priced.

Why Fire Alarm Is Estimated Wrong

Devices counted without candela ratings. Candela drives current draw, current draw drives how many appliances fit on a circuit, circuit count drives power supplies, and power supplies drive panel and battery sizing. A device count without ratings breaks that chain at the first link, so nothing downstream of it can be right.

Circuits assumed rather than calculated. Notification circuits are limited by voltage drop over the actual routed length. Assuming a standard number of appliances per circuit understates circuit count in a large building with long runs — and every extra circuit brings conductor, a power supply share and panel capacity with it.

Interfaces unassigned. Elevator recall and shunt trip, HVAC shutdown, hold-open release and sprinkler monitoring are code-required connections between packages. They are the classic scope gap: the fire alarm estimator assumes the elevator contractor carries it, the elevator contractor assumes the reverse, and nobody prices it.

Duct detectors missed. Duct smoke detectors are driven by air handler size and appear on the mechanical equipment schedule rather than on fire alarm plans. An estimator working only from the fire alarm drawings will not see them, and on a building with many rooftop units that is a real count with a real interface.

Cable type assumed. Plenum cable, survivable fire-rated cable and conduit differ substantially in material and labor. Assuming accessible-ceiling cable where the specification requires conduit or survivability understates the distribution across the whole building.

Phased cutover in occupied buildings not priced. Replacing a system in an occupied building requires the existing system to remain in service, with temporary measures, phased cutover, fire watch during outages and out-of-hours work. That process frequently costs more than the equipment and it appears on no drawing.

Related Estimating Services

Frequently Asked Questions

Do you quantify notification circuits or just devices?

Both, and the circuits are the part that takes the engineering. Candela ratings are established per space, current draw is totalled, voltage drop is calculated over the actual routed length, and that determines how many appliances a circuit can carry — which then drives power supply count and panel capacity. A device count with a rate applied has priced hardware, not a system.

Do you include interfaces to other systems?

Yes, and we flag each as a coordination item. Elevator recall and shunt trip, HVAC fan shutdown and smoke control, magnetic hold-opens, access control release and sprinkler flow and tamper monitoring all require conductor, a module and agreement with another subcontractor. The elevator interface especially is a classic gap where nobody has claimed the scope.

Do you count duct smoke detectors?

Yes, against the mechanical equipment schedule. They are driven by air handler size and live on mechanical drawings rather than fire alarm plans, so an estimator working from one discipline will not see them — and on a building with many rooftop units that is a real count with a real interface.

Do you estimate voice evacuation systems?

Yes, as their own scope. Amplifiers, speaker circuits, message storage, paging interfaces and circuit survivability requirements make these substantially more expensive than a horn-strobe system, and whether one is required comes from the occupancy classification rather than from preference.

How do you handle fire alarm work in occupied buildings?

As the phased operation it is. The existing system stays in service throughout, with temporary measures, phased cutover, fire watch during outages and out-of-hours work — and that process frequently costs more than the new equipment while appearing on no drawing.

Do you include design and acceptance testing?

Yes, both. Shop drawings with battery and voltage drop calculations submitted to the authority having jurisdiction at the front, and point-to-point testing of every device with a witnessed acceptance test at the back. Occupancy depends on the second one, so it is carried as duration as well as cost.

Send us your fire alarm plans and get a quote

Upload your plans or tell us what you need. We’ll reply with pricing and a delivery date.

Need to add trades, ZIP code, target date or project state? Use the full quote form ↗