Facility Management Terms: A–Z Glossary

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

Acceptance Testing

The process of verifying that a facility, system, or asset meets its performance, safety, and contractual requirements before formal handover. It usually includes inspections, functional tests, and a final sign off before the asset is accepted into operation.

ADA (Americans with Disabilities Act)

A U.S. federal law that requires facilities to be accessible to people with disabilities. It sets standards for entrances, restrooms, parking, signage, and pathways.

Air Quality Monitoring

The ongoing measurement of indoor pollutants such as PM2.5, PM10, CO2, and VOCs, along with temperature and humidity. It helps facility managers catch ventilation problems before they affect occupant health.

Asset Tagging

Labeling equipment with barcodes, QR codes, or RFID tags so its location, maintenance history, and lifecycle status can be tracked in a CMMS.

ASHRAE

The American Society of Heating, Refrigerating and Air Conditioning Engineers. Its standards define HVAC design, indoor air quality, and energy performance benchmarks used across the industry.

Automatic Transfer Switch (ATS)

An electrical device that automatically switches a facility's power supply from the utility grid to a backup generator when the main supply fails, and switches back once normal power returns.

B

BACnet

A communication protocol that allows HVAC, lighting, and access control systems from different manufacturers to exchange data within a single building management system.

Backflow Prevention

A set of devices and valves that stop contaminated water from flowing back into the clean water supply. It is mandatory in food service, healthcare, and irrigation systems.

Behavior-Based Safety

A safety program that focuses on identifying and correcting unsafe worker behaviors and habits, rather than only fixing physical hazards, in order to reduce workplace incidents.

Building Automation System (BAS)

The centralized system that monitors and controls a building's HVAC, lighting, and security equipment. It functions as the operational core of a smart building.

Building Controls

The sensors, actuators, and control logic that allow a BAS to adjust building systems in real time.

C

CAFM (Computer-Aided Facility Management)

Software that combines CMMS-style maintenance tracking with space planning and lease management.

CMMS (Computerized Maintenance Management System)

Software used to schedule, track, and document maintenance work orders, asset history, and spare parts inventory.

CapEx (Capital Expenditure)

Money spent on long-term assets such as new equipment, major upgrades, or building improvements. It is capitalized on the books rather than expensed immediately.

Carbon Accounting

The practice of measuring and reporting an organization's greenhouse gas emissions, usually across Scope 1, 2, and 3, in order to track progress toward sustainability targets.

Carbon Disclosure Project (CDP)

A global reporting system through which companies disclose environmental impact data, including emissions, water use, and deforestation, to investors and other stakeholders.

Certified Facility Manager (CFM)

The flagship professional credential from IFMA, which validates competency across the eleven core facility management domains. It is one of the most widely recognized certifications in the industry.

D

Defect Liability Period

The contractual window after a project's handover, typically lasting six to twenty four months, during which the contractor must fix any defects at their own cost.

Deferred Maintenance

Repairs or upkeep that have been postponed due to budget or scheduling constraints. It is a growing liability that increases asset risk and cost the longer it is left unaddressed.

Demand Response

The practice of temporarily reducing or shifting a facility's electricity use during periods of peak grid demand, often in exchange for a utility incentive.

Digital Facility Management

The use of connected sensors, software, and data platforms to run facility operations, rather than relying on manual, paper-based processes. It reflects the broader shift many facility teams are making toward centralized, data-driven decision-making.

Digital Twin

A live virtual model of a building or system, built from real-time sensor data, used to simulate and predict how the physical asset will perform. It works much like a flight simulator, letting a team test a change before making it on the real equipment.

E

EAM (Enterprise Asset Management)

Enterprise-wide software for managing physical assets across their entire lifecycle, from procurement to disposal. It is usually broader in scope than a CMMS.

Eco Niwas Samhita

India's energy conservation building code for residential buildings. It sets envelope and efficiency standards and serves as the residential counterpart to ECBC.

Electrical Safety Certificate

A formal certification confirming that a building's electrical installations meet applicable safety codes. It is often required for occupancy or insurance.

Embodied Carbon

The emissions generated while manufacturing, transporting, and installing building materials. It is distinct from a building's ongoing operational emissions.

Emergency Evacuation

The planned procedures and routes used to safely move occupants out of a facility during a fire, earthquake, or other emergency.

Equipment Lifecycle

The full span of an asset's life, from installation and operation through maintenance and eventual replacement. It is used to plan capital spending and maintenance strategy.

F

Facility Condition Assessment

A structured inspection that evaluates a building's physical condition and estimates the cost and timeline of any repairs needed. It is commonly used for budgeting and capital planning.

FMP (Facility Management Professional)

An IFMA credential covering core operational knowledge in facility management. It is often pursued as a stepping stone before the CFM.

Failure Mode

The specific way in which an asset or system can fail, such as bearing wear or corrosion. It forms the basis for failure mode and effects analysis and reliability planning.

Fault Tree Analysis

A diagram-based method for tracing the root causes of a system failure by mapping the combinations of events that could lead to it.

Fire Compartmentation

The practice of dividing a building into fire-resistant sections, using walls, floors, and doors, in order to contain a fire and slow its spread.

G

GHG Protocol

The most widely used global standard for measuring and reporting greenhouse gas emissions. It provides the framework behind Scope 1, 2, and 3 categorization.

Global Reporting Initiative (GRI)

An international framework that organizations use to disclose their environmental, social, and governance impacts.

Green Building

A structure that is designed, built, and operated to reduce its environmental impact. It is typically validated through certifications such as LEED, GRIHA, or IGBC.

Grounds Maintenance

The upkeep of a facility's outdoor areas, including landscaping, parking lots, and walkways, for the sake of safety and appearance.

Gross Floor Area

The total floor space of a building, measured from the outside walls. It serves as the baseline for space, energy, and cost benchmarking.

GRIHA

India's national rating system for green buildings, developed by TERI and endorsed by the Ministry of New and Renewable Energy.

H

HAZID

A structured, workshop-style exercise used to identify potential hazards in a facility or process before they cause harm.

Hazard Assessment

The process of identifying, analyzing, and rating workplace risks in order to prioritize the right controls.

Heat Recovery

The practice of capturing waste heat from one process, such as exhaust air or equipment, and reusing it elsewhere to reduce energy costs.

Hot Work Permit

A formal authorization required before welding, cutting, or any other spark-producing work, in order to control the risk of fire.

HVAC Controls

The sensors and logic that regulate a building's heating, ventilation, and air conditioning to maintain comfort and efficiency.

I

IBC (International Building Code)

The model building code, adopted with local amendments in most jurisdictions, that covers structural and life safety requirements.

IFM (Integrated Facility Management)

A delivery model in which multiple facility services, both hard and soft, are bundled under a single provider or contract for the sake of efficiency.

IFC (International Fire Code)

The model fire code that accompanies the IBC, covering fire prevention, protection systems, and hazardous materials.

IGBC (Indian Green Building Council)

India's leading green building certification body, offering ratings similar to LEED but tailored to Indian construction practices.

ILO-OSH

The International Labour Organization's guidelines for occupational safety and health management systems.

ISO 41001 (Facility Management Systems)

The global management systems standard specific to facility management, often described as the FM equivalent of ISO 9001. It is increasingly requested in client contracts and tenders as evidence that a facility operation follows a recognized standard.

ISO 45001 (Occupational Health and Safety)

The international standard for occupational health and safety management systems, which has replaced OHSAS 18001.

J

Janitorial Services Management

The oversight of cleaning staff, schedules, supplies, and quality standards. It is usually a soft-service line item in FM contracts.

JOC (Job Order Contracting)

A contracting method that uses pre-priced unit costs, allowing a facility to quickly commission repair or renovation work without running a full bid process each time.

JSA (Job Safety Analysis)

A step-by-step breakdown of a task's hazards, completed before work begins, in order to identify the controls needed at each step.

Joint Inspection

A facility walkthrough conducted together by two or more parties, such as a client and a vendor, in order to jointly verify condition or completion.

Just-in-Time Maintenance

The practice of performing maintenance exactly when it is needed, based on real-time condition data, rather than on a fixed calendar.

K

Key Asset

An asset whose failure would significantly disrupt operations, safety, or cost. It is given priority in maintenance and risk planning.

Keyless Access Control

A building entry system that uses cards, fobs, biometrics, or mobile credentials instead of physical keys.

kWh Benchmarking (Kilowatt-Hour Benchmarking)

The practice of comparing a building's energy consumption per unit of area or time against similar buildings or historical baselines, in order to spot inefficiency.

KNX

An open, international standard protocol for building automation, widely used in Europe to integrate lighting, HVAC, and security systems.

L

LEED

The most widely recognized global green building certification. It rates buildings on energy use, water use, materials, and indoor environmental quality.

Life Safety Compliance

Meeting fire and life safety code requirements, including exits, alarms, sprinklers, and signage, in order to protect occupants.

Lifecycle Cost Analysis

The practice of evaluating an asset's total cost over its full life, covering purchase, operation, maintenance, and disposal, rather than just its upfront price.

Lighting Controls

Sensors, dimmers, and schedules that automatically adjust lighting based on occupancy and available daylight, in order to save energy.

Lighting Power Density

A measure of installed lighting wattage per unit of floor area, used to benchmark and cap energy use in building codes.

M

Maintenance Maturity

A framework for assessing how advanced a facility's maintenance approach is, ranging from purely reactive to fully predictive and data driven.

Maintenance Work Order

A documented request or instruction to carry out a specific maintenance task, tracked from creation through to completion.

Manual Handling

The lifting, carrying, or moving of loads by hand. It is a major source of workplace injury and a key focus of safety training.

Modbus

A simple, widely used communication protocol for connecting industrial and building equipment to control systems.

Motor Condition Monitoring

The tracking of vibration, temperature, and current on motors in order to detect early signs of failure before a breakdown occurs.

N

NABERS

Australia's national rating system for measuring a building's energy, water, and waste performance.

National Building Code of India (NBC)

India's comprehensive building code, covering structural safety, fire protection, plumbing, and building services requirements.

Net Zero Building

A building that produces as much renewable energy as it consumes over the course of a year, resulting in zero net carbon emissions from its operations. It has become a common target in corporate sustainability commitments.

Non-Conformance

A documented instance in which a process, product, or facility fails to meet a specified requirement or standard.

Non-Destructive Testing

Inspection methods, such as ultrasonic, X-ray, or thermal testing, that evaluate equipment or materials without causing any damage.

O

Occupational Health and Safety

The broad discipline covering worker health, safety, and welfare in the workplace. It is the umbrella under which standards such as OSHA and ISO 45001 sit.

OPC UA

A modern, secure, and platform-independent protocol for exchanging data between industrial and building automation systems.

OT Security (Operational Technology Security)

Cybersecurity practices focused specifically on operational technology, such as building automation systems and PLCs. It has become a growing area of focus as facility and IT teams work more closely together.

OSHA

The U.S. agency, and the body of regulations it enforces, that sets and enforces workplace safety and health standards.

Outdoor Air Quality

The measurement of pollutants in the air surrounding a facility. It is relevant to ventilation design and occupant health.

Overload Protection

Devices such as breakers and fuses that automatically cut power when current exceeds a safe limit, preventing equipment damage or fire.

P

Performance-Based Contract

An FM service contract in which the vendor is paid based on measurable outcomes, such as uptime or response time, rather than hours worked.

Permit Compliance

Ensuring that a facility holds, and adheres to, all required regulatory permits, including fire, environmental, and occupancy permits.

Planned Preventive Maintenance (PPM)

Scheduled, routine maintenance performed on a fixed calendar in order to prevent failures before they happen.

Preventive Maintenance Compliance

The percentage of scheduled PPM tasks that are actually completed on time. It is a key performance indicator for maintenance teams.

Property Condition Assessment

A due diligence report that evaluates a property's physical condition, typically prepared before an acquisition or major investment.

Q

Qualified/Competent Person

An individual formally recognized as having the training and experience needed to safely perform or oversee a specific task, such as electrical work.

QAP (Quality Assurance Plan)

A documented plan that outlines how quality will be assured throughout a project or maintenance program, including inspections and checkpoints.

Quantity Surveying

The discipline of estimating, tracking, and managing construction or renovation costs from the design stage through to completion.

QR-Code Asset Tagging

The use of scannable QR codes on equipment to instantly retrieve maintenance history, manuals, or work order options through a mobile device.

Quarterly Statutory

Compliance Review
A recurring internal check to confirm that all required licenses, certifications, and regulatory filings remain current.

R

Reactive Maintenance

Fixing equipment only after it has failed. It is the least efficient maintenance strategy, though sometimes unavoidable for low-priority assets.

Reliability Analysis

A statistical evaluation of how likely an asset is to fail over time, used to plan maintenance intervals and spare parts inventory.

Remaining Useful Life (RUL)

An estimate of how much longer an asset can continue to operate before it needs to be replaced, based on its current condition.

Retro-Commissioning

The process of re-tuning an existing building's systems to restore or improve their performance, without making major capital upgrades. It is often one of the fastest ways to recover energy savings without investing in new equipment.

Risk-Based Maintenance

A strategy that prioritizes maintenance resources for the assets with the highest combined probability and consequence of failure.

Root Cause Analysis (RCA)

A structured method for identifying the true underlying cause of a failure or incident, rather than just addressing its symptoms.

S

Safety Audit

A systematic review of a facility's safety practices, equipment, and compliance against internal or regulatory standards.

SBTi (Science Based Targets initiative)

An organization that validates corporate emissions reduction targets against climate science.

Scope 1, 2 and 3 Emissions

The three categories used in greenhouse gas accounting: direct emissions from owned sources, indirect emissions from purchased energy, and indirect emissions across the value chain. Scope 3 is usually the largest and the hardest to control.

SFP (Sustainability Facility Professional)

An IFMA credential focused on sustainability practices within facility management.

SLA (Service Level Agreement)

A contractual agreement that defines expected service levels, such as response time, uptime, and quality, between a facility and its vendors or occupants.

Space Utilization

Data on how much of a facility's floor area is actually being used, and in what way. It is a key input for space planning and cost optimization.

T

TCFD (Task Force on Climate-related Financial Disclosures)

A framework for disclosing climate-related financial risks, now foundational to many corporate ESG reporting requirements.

Technical Compliance

Meeting the specific engineering, code, and standards requirements that apply to a facility's systems and equipment.

Testing and Balancing

The process of adjusting HVAC airflow and water flow rates after installation to match design specifications, ensuring even and efficient distribution.

Thermal Energy Storage

The practice of storing energy as heat or cold, often using ice or water tanks, during off peak hours for use during periods of peak demand. It reduces energy costs.

TCO (Total Cost of Ownership)

The full cost of owning an asset, including purchase, operation, maintenance, and disposal, used to compare options beyond the initial price.

U

Ultrasonic Leak Detection

The use of ultrasonic sensors to detect the high-frequency sound of air, gas, or fluid leaks, even in noisy environments.

Unsafe Act

A worker behavior that creates a risk of injury, such as skipping personal protective equipment or bypassing a safety guard. It is a core focus of behavior-based safety programs.

Unplanned Downtime

Any period during which a system or asset is unexpectedly out of service. It is a key metric for reliability and maintenance effectiveness.

Utility Consumption

The tracked usage of electricity, water, gas, and other utilities. It forms the base data for cost control and sustainability reporting.

UPS Maintenance

The scheduled testing and servicing of uninterruptible power supply batteries and systems, to ensure they will perform correctly during an outage.

V

VAV (Variable Air Volume)

An HVAC system design that varies the volume of air supplied, rather than its temperature, to match a zone's changing load. It is more efficient than a constant-volume system.

Ventilation Effectiveness

A measure of how well a ventilation system actually delivers fresh air to occupied spaces, rather than simply how much air it moves.

Vertical Transportation

Elevators, escalators, and lifts, and the distinct FM discipline covering their maintenance, code compliance, and modernization.

Vibration Analysis

The measurement of machine vibration patterns in order to detect misalignment, imbalance, or bearing wear before a failure occurs.

Visual Inspection

Checking equipment or facilities by eye for visible signs of wear, damage, or hazards. It is the simplest and most common inspection method.

W

Waste Management

The collection, sorting, and disposal, or diversion, of a facility's waste streams. It is increasingly tracked for sustainability reporting.

WELL Health-Safety Rating

A certification that evaluates a building's operational policies for occupant health and safety. It is distinct from the full WELL Building Standard.

WiredScore / SmartScore (Smart Building Ratings)

Certifications that rate a building's digital connectivity infrastructure and its smart technology readiness, respectively.

Workplace Ergonomics

The practice of designing workstations and tasks to fit the worker, reducing the risk of strain injuries and improving comfort and productivity.

Work Order Management

The end-to-end process of creating, assigning, tracking, and closing maintenance work orders, usually within a CMMS.

X

Xeriscaping

A landscaping approach designed to minimize or eliminate irrigation needs, using drought-tolerant plants. It is a common sustainability measure for ground maintenance.

X-Ray (Radiographic) Inspection

A non-destructive testing method used to check welds, pipes, and structural elements for internal defects.

Y

Yard Management System (YMS)

Software that coordinates trucks, trailers, and dock scheduling at industrial or logistics facilities. It is a growing adjacency to traditional FM software.

Year-One Defects Liability Warranty

The first year after handover, during which the contractor is obligated to fix defects at no charge. It is closely related to the Defect Liability Period.

Year-over-Year (YoY) Energy Performance

A comparison of a facility's energy consumption against the same period in the prior year, usually adjusted for factors such as weather. It is the standard way of tracking efficiency gains.

Yearly Statutory Compliance Calendar

A recurring schedule of all regulatory renewals, inspections, and filings that a facility must complete each year.

Yield Management (Flex/Coworking Space)

The practice of dynamically pricing and allocating flexible workspace to maximize occupancy and revenue, a concept borrowed from hospitality and airline pricing models.

Z

Z-Wave / Zigbee (Wireless Building Protocols)

Low-power wireless protocols commonly used to connect smart building sensors and devices, especially in retrofit projects.

Zero Downtime

The goal, rarely fully achieved in practice, of keeping critical systems continuously operational with no unplanned outages.

Zero Trust Architecture (Physical and OT Security)

A security model that assumes no device or user should be automatically trusted, and instead verifies every access request. It is increasingly being applied to building and operational technology networks as they become more connected to broader IT systems.

Zone-Based Maintenance

An approach that organizes maintenance responsibilities and schedules by physical zone or area of a facility, rather than by asset type.

Zoning (HVAC/Building)

The practice of dividing a building into independently controlled temperature zones, so that different areas can be heated or cooled according to their own specific needs.

Facility Management Terms: A to Z Glossary

A