Glossary
Facility Management has no shared language. The same term means different things per country, per contract and per provider. This list records which meaning this platform uses, where it comes from, and where the meaning is contested.
60 terms
A
- Asset lifecycle
The sequence of phases an asset moves through, from acquisition through operation and maintenance to disposal, each with a distinct cost and risk profile.
Sources: Concept framework of the ISO 55000 family
See alsoMaintenance engineering- Asset management
Coordinated activity to realise value from assets, with an explicit trade-off between cost, performance and risk across the life cycle.
Sources: Concept framework of the ISO 55000 family
Contested
In FM contracts the term is often narrowed to maintenance planning; asset management also covers investing, retaining and disposing.
See alsoKnowledge domains
B
- BeheerorganisatieCommonly used synonym for uitvoeringsorganisatie
Used in the Dutch market largely interchangeably with uitvoeringsorganisatie; see that entry for the core meaning.
See alsoUitvoeringsorganisatie- Built environment
The totality of buildings, grounds, infrastructure and installations within which the organisation carries out its activities.
Sources: ISO 41011:2024, term within the FM definition
See alsoThe FM Domain
C
- CAFMComputer Aided Facility Management; compare IWMS
Information system for recording and managing space, asset, contract and work order data in support of the facility function.
Contested
A CAFM system is a tool, not a management system. Buying one replaces no decision-making.
See alsoManagement System- Certification
Independent assessment that a management system or service meets a standard's requirements.
Contested
A certificate demonstrates that a process was followed, not that the outcome is good.
See alsoISO 41001:2018- Client
The party that commissions, funds and holds the facility service to account — distinct from the user who experiences the service.
Sources: ISO 41011:2024 distinguishes client, customer and end user
See alsoDistinctions- Condition-based maintenance
Maintenance strategy in which intervention is triggered by an asset's measured condition rather than by a fixed time schedule.
- Core business
The activities through which the organisation realises its purpose, and which FM supports without replacing.
Contested
For a cleaning company, cleaning is core business. The boundary depends on the organisation, not on the service.
See alsoThe FM Domain- Cost per workplace
Cost metric dividing facility cost by a number of workplaces or employees.
Contested
Incomparable without identical definitions of scope, area and occupancy. Under hybrid working the denominator shifts faster than the numerator.
See alsoBenchmark evidence base
D
- Demand management
The process that converts organisational need into explicit, weighed and funded requirements for delivery.
See alsoServices Atlas- Demand organisationConcept-level term; see Demandorganisatie for Dutch-market usage
Organisational form in which the internal function focuses on articulating, weighing and prioritising organisational demand, leaving the design of delivery to the market.
Contested
Often presented as the end state of a maturity ladder. This platform treats it as a position on a continuum, with risks of its own.
- DemandorganisatieDutch-market usage of demand organisation
Term common in the Dutch market for a demand organisation: the internal function that articulates demand and leaves delivery design to the market.
E
- End user
The person who experiences the service and the environment without having commissioned or funded it.
Sources: ISO 41011:2024
See alsoUser versus client
F
- Facilities Management
Regional variant, common in the United Kingdom and parts of Asia and Oceania. The plural stresses the objects; the singular stresses the function.
See alsoTerminology note- Facility
A building, site, installation or provision that contributes to carrying out the core process.
Sources: ISO 41011:2024
See alsoThe FM Domain- Facility Management
Organisational function which integrates people, place and process within the built environment with the purpose of improving the quality of life of people and the productivity of the core business.
Sources: After ISO 41011:2024, paraphrased
See alsoFull deconstruction- Facility management organisation (FMO)
The internal or outsourced unit responsible for arranging and having facility services delivered on behalf of the client.
See alsoOperating models- Facility service
A specific, bounded contribution to people, place or process within the facility portfolio, for example cleaning or security.
Sources: ISO 41011:2024
See alsoServices Atlas- FM organisation
Generic label for any organisational unit — internal or external — that performs the FM function, regardless of sourcing form.
Contested
Often conflated with FMO specifically; this platform uses the term more broadly, as an umbrella concept.
See alsoThe FM Domain
H
- Handover
The moment a building or installation passes from construction into operation, including transfer of information and responsibility.
Contested
In practice the information rarely travels with it. This handover cliff is a recurring thread in the discipline's history.
See alsoContinuing threads- Hard FMSee also Hard services
Alternative label for hard services, used more often in Anglo-Saxon FM organisational literature than in procurement contracts.
See alsoTaxonomy- Hard services
Market term for technical services to building and installations: maintenance, climate, electrical, transport, fire safety.
Contested
Not an ISO or EN term. The split is useful for procurement but follows no consistent criterion: security and catering land differently each time.
See alsoTaxonomy
I
- Integrated Facility Management (IFM)
Sourcing form in which one party delivers or coordinates a broad package of services under a single contract and single point of contact.
Contested
The term carries at least three meanings: a sourcing form, a market positioning and an organisational ideal of integration. They are constantly conflated.
See alsoIFM explainer- Integration discipline
The discipline that combines separate facility services, systems and contracts into a coherent delivery.
Contested
"Integration" is often used as a marketing claim without the underlying processes actually being combined.
- Intelligent client function
The capability on the client side to specify demand, manage contracts and judge performance without delivering itself.
Sources: Concept from UK outsourcing and public-sector procurement literature
- International Standard
A standard document published by an international standards body such as ISO, following a formal consensus procedure among member states.
Contested
Not every ISO document is an International Standard; Technical Reports and Technical Specifications carry a lighter status.
See alsoStandards
K
- Knowledge domain
A bounded field of knowledge and skill that the FM function draws on, such as asset management or space planning.
See alsoKnowledge domains- KPI
Performance indicator chosen because it informs a decision, not because it is easy to measure.
Contested
Many FM contracts measure response times because they are measurable, not because they determine the outcome.
See alsoManagement System
M
- Main contractor
The party that contractually carries the full package and directs subcontractors, regardless of who actually performs the work.
Contested
Concentrating responsibility in one main contractor does not resolve a coordination problem if the underlying chain stays fragmented.
See alsoSourcing models- Management system standard
A standard family that specifies requirements for how an organisation governs a subject — for example quality, environment or FM — not the subject itself.
Sources: Structure shared across ISO management system standards (Annex SL / High Level Structure)
- Managing agent
Contract form in which a party manages suppliers on behalf of the client without delivering the services itself.
See alsoSourcing continuum
O
- Operating model
How the organisation internally arranges decision-making, accountability and capacity around facility delivery.
Contested
Regularly equated with a sourcing model or a contract model. These are three different choices.
See alsoThe distinction- Organisational function
A coherent set of responsibilities within an organisation, regardless of who performs them or how they are structured.
Sources: ISO 41011:2024 characterises FM as an organisational function
See alsoThe FM Domain- Outcome-based contract
Contract specifying the state or outcome to be achieved rather than the activities to be performed.
Contested
Only works if the client can define and measure the outcome. Without that capacity it becomes an input contract in different words.
See alsoSourcing models- Output specification
Requirement set describing the result to be delivered and leaving the method to the provider.
See alsoService detail- Output vs. outcome
Distinction between what was delivered (output, for example square metres cleaned) and what was thereby achieved (outcome, for example satisfaction or productivity).
Contested
Contracts often specify output because outcome is harder to measure and attribute.
P
- PDCA
Plan-Do-Check-Act: the improvement cycle that shapes the structure of ISO management system standards.
Sources: Applied to FM in EN 15221-8:2025
See alsoPDCA and the lifecycle- Planned preventive maintenance (PPM)
Maintenance performed on a predetermined schedule, independent of the asset's actual condition.
Contested
Fixed schedules can result in maintenance that is too early or too late, compared with condition-based maintenance.
- Productivity
The extent to which the core process realises output per unit of input; in the FM definition one of the two explicit purposes alongside quality of life.
Sources: ISO 41011:2024
Contested
FM's contribution to productivity is typically indirect and hard to isolate from other factors.
Q
- Quality of life
In the FM definition: the experienced quality of the environment in which people work, dwell and collaborate.
Sources: ISO 41011:2024
Contested
The most criticised term in the definition: broad enough to cover everything and therefore hard to operationalise.
See alsoDeconstruction
R
- Regieorganisatie (Dutch client-side model)
Dutch organisational form in which the internal function directs: translating demand, managing contracts and steering providers without delivering itself.
Contested
There is no exact English equivalent. 'Client-side organisation' and 'managing agent' each cover only part of the meaning.
See alsoArchetype- Retained organisation
The part of the internal organisation that remains after outsourcing, to provide direction, contract management and strategy.
See alsoArchetype
S
- Service level
The agreed level of a service, expressed in measurable terms such as response time, availability or frequency.
See alsoServices Atlas- Service Level Agreement (SLA)
Agreement on the service level to be delivered, including measurement and consequences for deviation.
Contested
An SLA records what was agreed, not what the organisation needs. Without demand articulation it codifies the wrong thing.
See alsoLifecycle- Soft FMSee also Soft services
Alternative label for soft services, used more often in Anglo-Saxon FM organisational literature than in procurement contracts.
See alsoTaxonomy- Soft services
Market term for services to users: cleaning, catering, reception, mail, grounds, waste.
Contested
'Soft' implies lower criticality. In healthcare and food production, cleaning is legally critical.
See alsoTaxonomy- Sourcing model
The choice of who delivers: internally, per service externally, bundled, integrated or outcome-driven.
See alsoContinuum- Space measurement
Determining floor areas according to a shared measurement standard so that cost and occupancy become comparable.
Sources: In the Netherlands commonly per NEN 2580; internationally ISO 9836 and IPMS
See alsoStandards- Statutory compliance
Obligation arising from law and regulation, not negotiable in a contract or a cost reduction.
Contested
Outsourcing shifts execution, not the client's liability.
See alsoStatutory filter- Statutory maintenance
Maintenance mandated by law and regulation, regardless of contractual arrangement or budget.
- Strategic, tactical, operational
The three levels at which facility decisions are taken: setting direction, arranging delivery and executing.
Sources: Distinction from the EN 15221 line, carried into ISO 41012
See alsoThe three levels- Support process
An activity that enables the core process without being part of it itself, which is typically how facility services are positioned.
See alsoThe FM Domain
T
- Technical Report (TR)
An ISO document with informative content, such as background or guidance, without the normative status of an International Standard.
See alsoStandards- The split (Dutch: de knip)The decision boundary between in-house management and provider
The point where authority passes from in-house management to the provider: above the split decisions are internal, below it the provider designs its own approach. The split is a decision boundary, not a contract boundary and not an org-chart line. At a regieorganisatie the split sits higher than at a demandorganisatie.
Sources: Dutch FM practitioner language; not a standardised term.
Contested
There is no fixed height for the split and no standard defining it. Parties typically assume the other has the same split in mind; that assumption is the source of most FM contract conflict.
See alsoOperating Models- Total Facility Management (TFM)
UK variant of integrated outsourcing in which one provider delivers the full package, including its own workforce.
See alsoSourcing models
U
- Uitvoeringsorganisatie (Dutch delivery-side model)No exact English equivalent; approximately 'delivery organisation' or 'managed service organisation'
Dutch organisational form in which the internal or outsourced unit carries out the actual delivery of facility services, as distinct from direction or demand.
Contested
In practice often called 'beheerorganisatie'; there is no sharply drawn distinction between the two terms.
V
- Value creation
Demonstrably contributing to organisational objectives through the arrangement and operation of the work environment.
Contested
Often claimed, rarely demonstrated. The evidence base differs sharply per theme.
See alsoEvidence base- Vocabulary standard
A standard document that fixes terms and definitions for a field, such as ISO 41011 for FM.
Sources: ISO 41011:2024 is itself a vocabulary standard within the FM standard family
See alsoISO 41011:2024
W
- Workplace strategy
The discipline translating work, behaviour and organisational objectives into requirements for the physical and digital work environment.
See alsoKnowledge domains