What facility managers actually do (and what usually falls through the cracks)
Ask a building owner what facility management covers and they'll usually say something like "keeping the building running." Ask the person actually doing the job and you'll get a different list every time.
That gap between the concept and the actual task list is where a lot of problems start. Expectations don't match reality, things get assumed rather than agreed, and the FM role ends up holding responsibilities that were never explicitly assigned to it.
The core categories
There's a reasonable way to organise FM responsibilities into four buckets, which helps when scoping what a role or service should actually cover.
Building systems maintenance is the most visible part. This covers heating, ventilation, air conditioning, plumbing, electrical systems, lifts, and fire safety equipment. These all have scheduled service intervals, certification requirements, and a tendency to fail at inconvenient moments when they're neglected.
Fabric maintenance is less dramatic but constantly needs attention: the building envelope (roof, cladding, windows), internal finishes, doors, lighting, signage. No single task here is urgent, but the cumulative effect of ignoring it shows up quickly in how a building presents and functions.
Soft services is the umbrella for cleaning, waste management, pest control, landscaping, reception, and security. The quality variation here is enormous and mostly invisible until something goes obviously wrong.
And then there's compliance and administration. Certification tracking, contractor records, insurance-required inspections, energy reporting, lease obligations, access control. Not glamorous, but the area where oversights tend to have the most concrete consequences.
What gets assumed but not agreed
The most common friction point in FM relationships isn't any of the above. It's the things that sit between categories, or that everyone assumed someone else was handling.
Minor repairs are a good example. The FM coordinator assumes minor repairs below a certain value are in scope. The property manager assumes only scheduled maintenance is in scope. Neither has written this down.
Contractor selection is another. Who decides which plumber gets called? What happens if the building owner has an existing relationship with a contractor who charges above-market rates? Is the FM team supposed to flag that, or just place the order?
And then there's tenant liaison — the day-to-day friction of managing complaints, access requests, and maintenance queries from tenants in a multi-tenanted building. This is time-consuming and never quite fits neatly into any job description.
Where the hours actually go
In practice, the majority of FM time in a mid-size commercial building goes to three things: chasing contractors, logging completed work, and dealing with the gap between what was agreed with a contractor and what was actually delivered.
The scheduling, the briefing, the confirmation calls, the post-job checks — these are all coordination tasks that don't require specialist knowledge but do require consistent attention and follow-through. They're also the things that most readily fall off the list when the FM role is informal or shared with another responsibility.
Understanding that is useful whether you're defining a role, evaluating a service provider, or figuring out why your building's maintenance feels perpetually behind.