Preventive vs reactive maintenance: how to build a PPM schedule for your building

Reactive maintenance costs more and risks compliance. Here's how to define preventive maintenance and build a planned PPM schedule for your building, step by step.

Most building maintenance budgets get burned on problems that were predictable. A planned preventive maintenance (PPM) schedule shifts your spend from emergency call-outs to scheduled, low-cost servicing — and keeps you on the right side of Australian compliance obligations. This guide explains the difference between reactive and preventive maintenance, the real cost of running reactive, and how to build a PPM schedule for your building step by step.

What is the difference between reactive and preventive maintenance?

Reactive maintenance fixes things after they break. Preventive (planned) maintenance services and inspects equipment on a set schedule so it is less likely to break in the first place.

Reactive maintenance is unplanned work triggered by a failure or complaint — a burst pipe, a dead lift, a fire panel in fault. It is also called "run-to-failure" or breakdown maintenance.
Preventive maintenance (PPM) is planned, recurring work performed at defined intervals — quarterly fire equipment checks, six-monthly HVAC filter changes, annual backflow testing — regardless of whether a fault has appeared.

A related term is condition-based or predictive maintenance, where servicing is triggered by measured wear (vibration, run-hours, pressure readings) rather than a fixed calendar. For most strata and facilities teams, a calendar-driven PPM schedule is the practical foundation, with condition-based triggers added for critical plant over time.

No building runs on preventive maintenance alone — reactive work will always exist. The goal of a PPM schedule is to shrink the reactive share, not eliminate it.

What is the true cost of reactive maintenance?

Reactive maintenance almost always costs more than the equivalent planned work — typically several times more once you account for the hidden costs beyond the invoice.

The true cost of running reactive includes:

Premium labour rates. Emergency and after-hours call-outs attract penalty rates and minimum call-out fees that scheduled visits avoid.
Collateral damage. A failed seal that could have been replaced for a small sum becomes water damage to three units below it.
Shorter asset life. Equipment run without servicing fails earlier, bringing forward expensive capital replacement.
Downtime and disruption. A failed lift or pump means complaints, access problems, and in some cases an unsafe building.
Compliance exposure. Missed servicing on essential safety measures can breach legislation and void insurance — a serious liability for an owners corporation or its committee.
No price tension. In a genuine emergency you take the first available contractor at their rate, not the best-value one.

A useful rule of thumb in facilities management is that every dollar deferred on planned maintenance tends to return as several dollars of reactive cost. Buildings that drift into a reactive cycle also lose the data needed to plan ahead, which compounds the problem.

What are the benefits of a planned preventive maintenance schedule?

A PPM schedule lowers total maintenance cost, extends asset life, and gives you the records you need to prove compliance.

Key benefits:

Lower lifetime cost through cheaper scheduled servicing and fewer catastrophic failures.
Longer asset life, so capital replacement is deferred and the capital works fund stretches further.
Compliance evidence — a complete service history you can produce for auditors, insurers, councils and an annual fire safety statement.
Budget predictability, because planned work can be scoped, quoted and scheduled across the year instead of arriving as surprise invoices.
Fewer disputes, since residents and owners see equipment being looked after rather than failing.
Better contractor relationships and pricing, because recurring scheduled work is more attractive to service providers than ad-hoc emergencies.

How do you build a PPM schedule for your building?

Build a PPM schedule in six steps: inventory your assets, set service frequencies from manufacturer and Australian Standard requirements, assign responsibilities, put everything on a calendar with reminders, capture records as work is done, and review the schedule regularly.

Step 1: Build an asset register

You cannot maintain what you have not listed. Start with a complete asset register — a structured inventory of every serviceable asset in the building.

For each asset, capture:

Asset name and type (e.g. fire pump, lift, HVAC unit, backflow device, EWIS panel)
Location and unique ID or tag
Make, model and serial number
Install or commissioning date and expected service life
Warranty details and the responsible contractor
Whether it is an essential safety measure / essential service

Walk the building rather than relying on old documents. Plant rooms, roof spaces, car parks, risers and switchrooms are where the high-consequence assets live. Flag every essential service as you go — these drive your non-negotiable compliance tasks.

Step 2: Set service frequencies from manufacturer specs and AS standards

For each asset, the service interval is set by whichever is most stringent: the manufacturer's recommendation, the relevant Australian Standard, or your jurisdiction's regulations.

Key sources of frequency:

Manufacturer's maintenance schedule — the baseline for plant such as lifts, pumps, HVAC and pool equipment.
Australian Standards. Fire protection equipment is serviced to AS 1851 (Routine service of fire protection systems and equipment), which sets specific intervals — many fire items are checked monthly, quarterly, six-monthly, annually and at longer milestones depending on the component. Other examples include emergency and exit lighting (AS/NZS 2293.2) and anti-backflow devices (AS 2845 / AS/NZS 3500), typically tested annually.
State and territory regulation. Essential safety measures (Victoria), essential fire safety measures (NSW Annual Fire Safety Statement regime) and equivalents in other states impose minimum maintenance and certification obligations on the building owner or owners corporation.
Lift registration and inspection obligations under state work-health-and-safety rules.

Record the required frequency and the standard or document that mandates it against each asset. That citation is what proves the schedule is defensible, not arbitrary.

Step 3: Assign responsibilities

Every recurring task needs a named owner — internal or external — so nothing falls through the gap between "someone" and "no one".

For each task, define:

Who performs it — in-house building/facilities staff for simple checks, licensed contractors for regulated work (fire, lifts, electrical, gas, backflow).
Who verifies and signs off — usually the strata or facilities manager.
Who holds the compliance certificate and lodges any statutory statement.

Regulated work must go to appropriately licensed and competent trades; fire safety and lift work in particular cannot be done by general handypersons. Keep contractor licences and insurances current in a compliance vault tied to the asset.

Step 4: Put it on a calendar with reminders

Convert the frequencies into dated, recurring tasks on a single maintenance calendar with automatic reminders ahead of each due date.

Generate recurring tasks (monthly, quarterly, six-monthly, annual) per asset.
Set lead-time reminders so contractors can be booked before the due date, not after it passes.
Cluster visits where sensible — for example, group all quarterly fire checks into one attendance.
Track each task's status: due, booked, completed, overdue.

This is where dedicated software earns its place. AI-native strata and facilities platforms such as Orveya — built and hosted in Australia — generate the recurring schedule from your asset register and AS-based frequencies, raise work orders automatically, and flag anything overdue, with any AI-suggested action carried out only under human approval. A spreadsheet can work for a small building, but it relies on someone remembering to look at it.

Step 5: Capture records as work is done

A service is only worth what you can prove. Capture a record for every completed task at the time it is done.

For each completed job, keep:

Date performed and by whom (name and licence)
What was inspected, serviced or replaced
Pass/fail result and any defects raised
Photos, meter readings and the contractor's service report or certificate
The follow-up work order for any defect found

Link each record back to the asset so its full history is one click away. This history is your evidence for annual fire safety statements, insurance renewals, audits and owner queries — and it feeds the lifecycle data you need for capital planning.

Step 6: Review and refine

Review the schedule at least annually. Add new assets, retire decommissioned ones, adjust frequencies where failure data or standards change, and check that no overdue tasks have been quietly accumulating.

How does PPM connect to compliance and the capital works fund?

PPM is the engine that produces both your compliance evidence and the lifecycle data that drives the capital works fund. The same records serve both purposes.

On compliance, a PPM schedule built around essential services and Australian Standards is what lets you certify a building each year — for example, lodging an Annual Fire Safety Statement in NSW or maintaining essential safety measures in Victoria. The service records are the proof that the work was actually done by competent people at the required intervals.

On the capital works fund (the long-term maintenance / sinking fund that owners corporations must maintain), your asset register and service history feed the maintenance plan that forecasts when major assets need replacing and how much to levy. Good PPM data improves capital planning in two ways:

It shows actual condition and age of each asset, so replacement timing is grounded in reality rather than guesswork.
It extends asset life, deferring big-ticket replacements and reducing the levies owners face.

In short, PPM turns day-to-day servicing into the dataset that underwrites both legal compliance and the ten-year capital plan.

What are the common mistakes when building a PPM schedule?

The most common mistakes are an incomplete asset register, guessed frequencies, no clear ownership of tasks, and poor record-keeping.

Watch for these pitfalls:

Missing assets. A register that omits the roof plant or the basement pumps leaves blind spots exactly where failures hurt most.
Guessed intervals. Frequencies should be tied to a manufacturer spec or Australian Standard, not copied from another building.
Over-servicing low-risk items while under-servicing critical plant — balance effort against consequence of failure.
No named owner, so tasks drift until something breaks.
No records, or records scattered across emails and contractors' filing cabinets, leaving you unable to prove compliance.
"Set and forget." A schedule that is never reviewed slowly drifts out of date as assets change.
Ignoring reactive data. Recurring breakdowns are a signal to adjust the PPM schedule, not just to keep fixing the symptom.

Frequently asked questions

What is a PPM schedule?

A PPM (planned preventive maintenance) schedule is a calendar of recurring inspection and servicing tasks for a building's assets, set at intervals defined by manufacturer recommendations, Australian Standards and regulations. It tells you what to service, how often, and who is responsible, and it generates the records that prove the work was done.

How often should building equipment be serviced?

It depends on the asset. Service intervals come from the manufacturer's schedule, the relevant Australian Standard, and state regulations — whichever is most stringent. For example, fire protection equipment is serviced to AS 1851 at intervals ranging from monthly to annually and beyond depending on the component, while items like backflow devices and emergency lighting are commonly tested annually.

Is preventive or reactive maintenance cheaper?

Preventive maintenance is almost always cheaper over the life of an asset. Scheduled servicing costs less than emergency call-outs, avoids collateral damage, and extends asset life. Reactive maintenance carries premium after-hours rates, hidden consequential costs, and compliance risk, which is why reducing the reactive share is a core goal of any PPM program.

Who is responsible for building maintenance in a strata scheme?

In an Australian strata scheme, the owners corporation (body corporate) is generally responsible for maintaining common property and essential safety measures, usually acting through a strata manager and engaged contractors. The owners corporation must also maintain a capital works (sinking) fund and a long-term maintenance plan, which a PPM schedule directly supports.

Do I need software to run a PPM schedule?

Not strictly — a small building can run a simple schedule on a spreadsheet. But as the number of assets and compliance obligations grows, dedicated facilities or strata software pays off by generating recurring tasks automatically, sending reminders, raising work orders, and keeping a linked service history for audits and capital planning. AU-hosted, AI-native platforms can also flag overdue work and suggest actions, with humans approving anything the system proposes.

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