HVAC and Utilities Are Eating 8-12% of Your Revenue. Most Practices Don't Know This

A general practice collecting $1.2 million a year with occupancy costs running at 13% of collections is writing $156,000 in checks to a landlord and a utility company. The same practice at the published median pays about $78,000. The $78,000 gap is not a rounding error on a P&L, it is a full-time employee at the national average wage for dental offices, and almost no owner in that position can tell you which half of the gap is rent and which half is air conditioning.

Here is the claim we will defend, and plenty of owners will hate it: your utility bill is a symptom, your lease is the disease, and the practices that spend a Saturday chasing LED rebates while signing a seven-year renewal on 2,400 square feet they don't need have their priorities exactly backwards. We still think you should fix the utility bill. It is the only part of occupancy you can change before your lease expires, and the cash is real. But if you are at 11% and you treat it as an energy problem, you will still be at 10.4% in 2033.

Occupancy Is the One Overhead Line That Renews Every Thirty Days

Every other major expense category gets management attention. Staff cost gets scheduled meetings, because the U.S. Bureau of Labor Statistics counts 1,022,780 people working in American dental offices at a mean annual wage of $75,660, and payroll is the number that wakes owners up. Supplies get a vendor comparison twice a year. Lab gets a fee schedule review. The ADA Health Policy Institute's Survey of Dental Practice breaks gross billings and expenses out by category, rent and utilities included, and the data files exist for anyone who wants to know where they sit. Facility cost is the category owners look at once, when they sign, and then never again.

The benchmarks are not a mystery. Overjet puts facility-related expenses at 6 to 10% of collections, covering rent or mortgage, utilities, maintenance, and equipment leases. Dental CPA USA's client benchmark data puts facility costs at about 7 to 9% of revenue, with rent alone at 5 to 9% of collections. Dental Strategy Institute's occupancy ratio, which bundles rent, mortgage principal, property taxes, CAM charges, and utilities, lands at 6 to 7% at the median, 9 to 10% at the 75th percentile, and 13% or more at the 90th. Their read is that anything above 10 to 12% signals a structural overhead problem, not a bad quarter.

Stack those three and the picture is unambiguous. If your occupancy sits between 8 and 12% of collections, you are above every published median in the profession and nobody has told you, because your CPA reports rent and utilities on separate lines forty rows apart and your practice management software reports neither.

What Most Owners Get Wrong: They Audit the Bill, Not the Lease

The specific mistake is made by the most conscientious owners, not the careless ones. It looks like this: the electric bill jumps 18% over a summer, the owner notices, calls the HVAC contractor, gets a filter change and a coil cleaning, installs a programmable thermostat, and feels like the problem is handled. Total recovered: maybe $200 a month. Total time: three weeks of attention.

Meanwhile the same owner renews a lease at a 3% annual escalator on square footage sized for a five-operatory build-out they never finished, signs a CAM clause with no cap and no exclusion for capital replacements, and accepts a personal guarantee that survives a sale. That decision is worth thirty times the thermostat and takes an afternoon. Nobody prepares for it, because lease renewal arrives as an administrative task from a property manager rather than as the second-largest financial decision in the practice's life.

The other version of this mistake is the owner who bought the building and declared occupancy solved. Owning the real estate changes who receives the rent check, not whether the number is defensible. If the practice is paying itself above-market rent on a building that will be valued on the practice's own rent roll at sale, the entity is fine and the practice is carrying inflated overhead that every buyer's accountant will normalize anyway.

A $1.2M Practice at 11.4%: Line by Line

Take a four-operatory general practice collecting $1.2 million in a 2,400 square foot suite in a suburban retail center. Base rent at $38 per square foot, triple net, is $91,200 a year. That alone is 7.6% of collections, at the top of the Dental CPA USA rent band before a single other cost lands.

CAM runs $7 per square foot, or $16,800. Electricity, gas, and water together average $2,400 a month across the year, heavier in July and August, which is $28,800. Total occupancy: $136,800, or 11.4% of collections. That is the 90th percentile neighborhood, and the owner has never seen the three numbers added together on one page.

The gap to the 6 to 7% median is $58,800 a year. At the BLS mean wage for dental offices, that gap is roughly 78% of a full-time employee, funded entirely by a building.

Now split the recoverable piece. On the utility side, a disciplined program of scheduled setbacks, compressor and vacuum shutdown outside clinical hours, economizer and damper service on the rooftop unit, and a rate review with the utility should take 15% out of a bill that has never been managed. That is $4,320 a year. On a practice netting 25%, $4,320 of avoided cost is the equivalent of $17,280 in new production, which is a meaningful number of crowns you do not have to find, schedule, or seat.

On the lease side, if the suite can give back 350 square feet at renewal (a storage room, an operatory shell that was never plumbed, a private office that became a Zoom closet), that is $13,300 in base rent plus $2,450 in CAM. Call it $15,750 a year. Over a seven-year term, before escalators, $110,250.

Both moves together take $20,070 a year out of occupancy and drop the ratio to 9.7%. Out of the 90th percentile and into the merely expensive. Note the split: the thermostat work delivers 22% of the savings and the lease conversation delivers 78%.

The Rooftop Unit Is Not Your Equipment, Until It Is

The single most expensive sentence in a dental lease is usually the CAM clause, and the most common way it bites is HVAC. A dental suite runs its air handling harder than the nail salon two doors down, because you are managing humidity for materials, air exchange for aerosols, and comfort for people lying on their backs under a light. Landlords know this. The lease often assigns the tenant full responsibility for the unit serving its premises, including replacement, with no cap and no proration for remaining useful life.

Run the illustration. A $45,000 rooftop replacement across a 12,000 square foot center, allocated pro rata, puts $9,000 on a 2,400 square foot tenant in a single year. If the lease required amortization over the unit's useful life instead, the same event costs $900 a year. That is an eight-thousand-dollar swing decided by one sentence, and it is negotiable at renewal in a way it is never negotiable the week the compressor dies in August.

Our view: if you are signing a renewal this year and you do not get a CAM cap, a capital-expenditure exclusion, and the right to audit the landlord's reconciliation, you have given away more than any fee increase you will pass this decade will recover. We would not sign it. We have seen owners spend six weeks agonizing over a 4% fee adjustment and forty minutes on the document that governs $136,800 a year.

When 12% Is Defensible and 7% Is a Warning Sign

Benchmarks are a diagnostic, not a verdict, and the ratio has a denominator. A practice at 12% occupancy that is collecting $700,000 in a suite built for $1.6 million does not have an occupancy problem, it has a production problem wearing an occupancy costume. Fixing that with a sublease is usually the wrong call. Fill the chairs and the ratio corrects itself, because the rent does not move when you add a hygiene day.

The inverse is more dangerous and gets praised in study clubs. A practice at 7% occupancy with a two-week hygiene backlog, no room for an associate, and a sterilization bay that bottlenecks at 11am is not efficient, it is capacity-capped, and its low ratio is a record of growth it declined. You cannot out-produce your square footage. That owner should be paying 9% on purpose, and the extra $24,000 a year buys the third hygiene chair that supports another $180,000 in collections.

So the honest test is not the percentage. It is whether every square foot you are paying for either generates revenue, supports a chair that does, or is legally required. Storage rooms, oversized private offices, and dark operatory shells fail that test, and they are the most common form of it.

What would change our position: if commercial utility rates keep climbing faster than the rents in dental corridors, the controllable share of occupancy gets larger and the thermostat stops being a rounding error. We are tracking two things into next year, the spread between medical-office asking rents and general retail in suburban markets, and how many renewals we see with capital-expenditure exclusions actually granted rather than merely asked for. If landlords start conceding CAM caps as a matter of course, the calculus on staying put shifts hard.

Do This Before Your Next Renewal Letter Arrives

Pull twelve months of rent, CAM, property tax, insurance, and every utility invoice onto one page and divide by collections, because until that single number exists you are managing three unrelated expenses instead of one category. Then find your lease expiration date and count backward eighteen months, which is when the conversation has to start if you want a concession rather than a renewal form. Walk the suite with a tape measure and mark every square foot that does not hold a chair, a person, or a legal requirement. Finally, request the last two CAM reconciliations in writing and read the HVAC line.

If you want to see where your occupancy ratio sits against the benchmarks in this piece before you sign anything, our overhead calculator takes rent, CAM, and utilities alongside your collections and tells you which percentile you are in and what a point of occupancy is worth in annual dollars at your production level. It takes about four minutes with your P&L open. Run your own numbers before the renewal letter shows up, not after.