Level of Service (LOS)
Executive Summary
Key Takeaways
- ✓ Level of service is the defined, measurable standard of performance, availability, or condition an asset owner commits to sustain, not a general aspiration statement.
- ✓ LOS is the key driver of an asset management plan's funding requirement, since renewal and maintenance need is a function of the specific service standard being pursued, not an independent fixed budget figure.
- ✓ LOS should be defined separately for different service dimensions, condition, availability, capacity, response time, since a single blended service statement cannot support a defensible funding requirement calculation.
- ✓ A funding requirement presented without a stated LOS target cannot be assessed for adequacy, since the same portfolio can justify very different funding levels depending on the service standard being pursued.
Definition¶
Level of service (LOS) is the defined standard of performance, availability, or condition an asset owner commits to sustain for a given infrastructure asset or portfolio, expressed in specific, measurable terms rather than a general aspiration.
Why It Matters¶
LOS is the key driver connecting an asset management plan's stated funding requirement to an actual, testable outcome. Renewal and maintenance funding need is not an independent budget figure — it is a function of the specific service standard the owner has committed to sustain, described in Asset Management Plans. A funding requirement presented without a stated LOS target provides no basis for judging whether the figure is sufficient, excessive, or correctly targeted.
Defining LOS by Service Dimension¶
LOS should be defined separately across the service dimensions relevant to the specific asset type — condition (physical state), availability (uptime or accessibility), capacity (throughput or utilisation headroom), and response time (how quickly a defect or failure is addressed) are common dimensions. A single blended service statement, rather than dimension-specific targets, cannot support a defensible, dimension-specific funding requirement calculation, since different dimensions typically have different cost drivers.
LOS and Ongoing Performance Measurement¶
LOS targets are the standard against which actual asset performance is measured and reported over time, providing the link between a stated commitment and observed real-world outcomes.
Common Errors¶
- Stating LOS as a general aspiration ("well-maintained assets") rather than a specific, measurable target.
- Presenting a funding requirement with no attached LOS target, leaving the figure impossible to assess for adequacy.
- Using a single blended LOS statement across dimensions with genuinely different cost drivers.
Continue Reading¶
Prerequisites¶
- Infrastructure Asset Management Financial Modelling — the parent pillar
Related Technical Guides¶
Related Glossary¶
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Frequently Asked Questions
What is level of service (LOS)?
The defined standard of performance, availability, or condition an asset owner commits to sustain for a given infrastructure asset or portfolio, expressed in specific, measurable terms rather than a general aspiration.
Why does LOS matter for asset management financial modelling?
Because it is the key driver of an asset management plan's renewal and maintenance funding requirement — a higher committed service standard generally requires more extensive or more frequent intervention, and the funding requirement calculation cannot be assessed for adequacy without a stated LOS target.
Should LOS be a single blended statement across all service dimensions?
No. LOS should be defined separately for different service dimensions relevant to the asset — condition, availability, capacity, response time — since a single blended statement cannot support a defensible, dimension-specific funding requirement calculation.
What happens if a funding requirement is presented without a stated LOS target?
It cannot be assessed for adequacy, since the same portfolio can justify very different funding levels depending on the specific service standard being pursued — a funding figure with no attached service outcome provides no basis for judging whether it is sufficient, excessive, or correctly targeted.
Related Articles
Asset Management Plans
An asset management plan (AMP) is the document, and underlying financial model, through which an asset owner sets out how a portfolio of infrastructure assets will be operated, maintained, renewed, and funded over a defined planning horizon, typically ten to thirty years. This guide covers how the financial projections in an asset management plan should be structured: the link from the asset register and condition assessment to a funded forecast, the level-of-service targets the plan is built to sustain, and the funding gap analysis that distinguishes a credible plan from an aspirational one.
Renewal Gap
The renewal gap is the shortfall between the technically required renewal and major maintenance spend, derived from condition data and level-of-service targets, and the funding actually committed by the asset owner over the same planning horizon. It is the central quantitative output of an asset management plan's funding gap analysis, and its trend over time is a key indicator of whether a portfolio's overall condition is likely to improve, hold steady, or deteriorate.