| Cost component | Where it sits on the ledger | Who typically owns it | Common omission |
|---|---|---|---|
| Base rent | Occupancy expense (P&L) | Real estate / finance | Rarely omitted |
| Operating costs & realty taxes recovered by the landlord | Occupancy expense, bundled with rent | Lease administration | Left in an unassigned "other" bucket |
| Utilities not recovered through rent | Utilities / energy expense | Facilities / operations | Tracked apart from the rent line |
| The outsourced FM or services contract | Contracted-services expense | Procurement / facilities | Filed as "professional services," not real estate |
| Insurance on the building and its contents | Insurance expense | Risk / finance | Pooled corporately, never traced to a site |
| Capital renewal & fit-out amortization | Amortization, below the operating line | Finance / capital planning | Excluded — sits below EBITDA |
| Moves, adds, changes & space-tied technology | Facilities or IT project expense | Facilities / IT | Booked as one-off projects |
| Vacant or under-used space | Not a ledger line — an opportunity cost | No one | Largest omission: paying for unused space |
Insights
Total Cost of Occupancy: The Number Your P&L Doesn't Show
Most organisations can quote their rent per square metre. Almost none can quote their total cost of occupancy — what a building actually costs to run, once every ledger account owned by a different person is added up.
Sept. 15, 2026 · Patricia Karchemny · 7 min read
Portfolio Economics for the CFO Part 1 of 1
What total cost of occupancy actually means
Total cost of occupancy is what it actually costs an organisation to occupy and operate a piece of real estate for a period — not the rent line alone, but every ledger entry tied to that space: operating costs and realty taxes, insurance, utilities, repairs and maintenance, administrative fees, tenant improvements, moving allowances and unplanned capital projects. Once these are captured, the real cost of occupying a building can run 5–20% above what was originally budgeted, according to IFMA’s Facility Management Journal, and none of it is exotic — it is simply spread across accounts that finance, procurement, facilities, IT and risk each own a slice of, rarely reconciled to a single site total. So the one number everyone can see, rent per square metre, becomes the number portfolio decisions get made on — not because it is the right one, but because it is the only one anyone has fully assembled.
Where the number hides in your ledger
Assembling total cost of occupancy is mostly an exercise in finding out where the rest of it is already sitting. A typical portfolio's real estate cost is a roll-up across half a dozen ledger accounts, several cost centres, and at least three functions that rarely compare notes with each other. The table below is a starting checklist — the accounts to pull, who usually holds the pen on each one, and the line most commonly left out when someone tries to add it all up for the first time.
Two ways to carry the same cost
A leased site and an owned site carry the same total cost — it just sits on different lines. A leased office shows most of its cost as rent, with operating costs and taxes recovered by the landlord riding alongside it. An owned building shows almost none of that: its dominant lines are capital renewal, fit-out amortization and the outsourced-services contract that keeps it running, plus a cost that rarely appears on any statement at all — the opportunity cost of the capital tied up in the building, sometimes called imputed rent. How to book that is a lease-versus-own question in its own right; the narrower point here is that leaving an owned site out of the comparison because "there's no rent to compare" understates what it costs to occupy, full stop.
The denominator that matters to a CFO
Cost per square metre describes the building. It says nothing about whether the organisation using it is getting value from the space, because it never asks how many people are actually in it. A more useful denominator ties the cost to people: cost per seat — total facility spend divided by workstations built — is one step better, and a metric facilities-management research treats as more informative than cost per square foot alone. The more complete version divides that same total by actual attendance rather than desks provisioned: total cost of occupancy per person who actually showed up. That number is only as good as the attendance data behind it — measuring attendance itself, by badge, sensor, Wi-Fi or booking system, is its own question for another day; here the point is simply which denominator to use once you have one.
What the number is for
Total cost of occupancy earns its keep once it leaves the spreadsheet. It is the number that lets a board compare two sites honestly instead of on rent alone, that lets a consolidation case be modelled before anything is signed, and that lets an outsourced-services contract be held to a cost baseline rather than to the supplier's own invoice — a governance question our outsourced-services governance work returns to directly. Building the number is itself a portfolio and capital strategy exercise, and it holds up best when whoever assembles it has no stake in what it shows. If your organisation cannot currently produce this figure for its largest sites, that gap is worth a confidential conversation — get in touch.
Key takeaways
- Total cost of occupancy is everything it costs to occupy and run a space, not rent alone — spread across accounts finance, procurement, facilities, IT and risk each own a piece of.
- Owned buildings carry the same total cost as leased ones; it shows up as capital renewal and an unbooked opportunity cost instead of a rent line.
- Cost per seat, and better still per actual attendee, beats cost per square metre for judging whether spending matches how the space is used.
- The number is most useful for comparing sites, modelling a consolidation, and holding a services contract to a baseline — most credible when assembled independently.
- Public occupancy-cost benchmarks vary widely by market and building class — a sanity check, not a target.
Frequently asked questions
What is included in total cost of occupancy?
Rent is only the starting point. A complete figure adds operating costs and realty taxes, utilities not recovered through rent, the outsourced facilities or services contract, insurance, capital renewal and fit-out amortization, moves and space-tied technology, and the cost of any vacant or under-used space — the real total commonly runs above the originally budgeted line once every account is captured.
What is a good occupancy cost per employee?
There is no single defensible number. Public benchmarking surveys, published periodically by industry associations, vary widely by market, building class, sector and methodology, so importing someone else's median as a target is a common, expensive mistake. The more useful discipline is tracking your own total cost of occupancy per attendee over time, confirmed with finance and facilities before it reaches a board deck.
Should an owned building be included in total cost of occupancy?
Yes. An owned site still consumes capital, through renewal, depreciation and the opportunity cost of capital tied up in the building, even though no rent cheque is written. Leaving it out, or comparing it to leased sites on rent alone, understates the real cost and can bias a decision toward whichever option merely looks cheaper on paper.
How often should total cost of occupancy be reviewed?
At minimum once a year, alongside the budget cycle, and again whenever a site comparison, consolidation case or lease renewal is on the table — a figure left untouched stops reflecting reality within a year or two, particularly for lines like capital renewal that move in large, infrequent steps.