The One Number That Determines Whether Your Practice Build Succeeds or Fails

Every decision in a dental facility build flows from one number: how many operatories. That single figure sets the square footage required, which sets the land or lease footprint, which determines the construction budget. It sets the equipment budget — chairs, delivery systems, cabinetry, imaging, sterilization capacity. It determines how many providers the space can support and what your staffing model looks like in year two and year five. It shapes the debt service on the project and whether the revenue the facility generates covers that debt comfortably or just barely. Get the operatory count right, and every other decision has a rational foundation. Get it wrong, and you've built a problem you'll carry for the life of the facility.

The two failure modes are mirror images of each other. Operators who undercount build a space that's already too small before they've finished paying for it. They designed conservatively — maybe to control costs, maybe because they weren't sure how fast they'd grow — and within three or four years they're looking at their schedule and realizing the ceiling is right back where it was. They're constrained by chairs again, turning away patients again, and now they're doing it while servicing the debt on a building they've already outgrown. Expanding an existing facility isn't cheap. In many cases the structural, mechanical, and electrical systems weren't designed with expansion in mind, so even adding one or two operatories triggers a project nearly as disruptive as the original build.

Operators who overcount build too much space and borrow more than their current production supports. The debt service is predicated on a utilization level they haven't reached yet, and the path from current production to that level is less certain than it looked in the planning phase. Those additional operatories sit empty for a year, then two, then the owner is fighting the feeling that they made a mistake. The facility is technically right for the future they envisioned, but the present is harder than projected.

The correct operatory count isn't a feeling or a round number that sounds ambitious. It comes from a specific analysis of how the practice actually operates and where it is realistically headed. Start with current production per provider per chair. If you have four active operatories and two providers generating $1.8M annually, you have a baseline. Now project that forward: what does your patient panel look like in three years? What does your hiring plan look like? Are you intending to bring on an associate or a hygienist, and when? If you expand hygiene from two days per week to five, how many chairs does that require? If an associate joins in year two, what do they need?

This analysis has to model not just what you want, but what the market supports and what your referral base can fill. There's a version of this conversation where an ambitious owner projects aggressive growth and arrives at an operatory count that assumes everything goes right. That's not planning — that's optimism embedded in construction debt. The projection has to be honest about realistic growth trajectories, the time it takes to ramp a new provider, and the patient volume your marketing and referral network can actually generate.

The programming phase — before design starts — is when this analysis happens. Some teams call it a facility needs assessment. Whatever the name, it's the structured process of translating a practice model into a building program. How many operatories, what configuration, how much sterilization capacity, what imaging equipment, how many consultation rooms, what does the front desk need to handle your patient volume, where does the team eat lunch? These aren't aesthetic questions. They're operational ones. The design follows the program. The program has to come first.

The same logic applies across every vertical Primus serves. A veterinary clinic's exam room count drives the same downstream decisions that operatory count does for a dental practice — too few and the practice is capacity-constrained from day one; too many and the debt service outpaces the production ramp. A medical practice right-sizes procedure rooms and imaging suites against its patient volume model and equipment utilization targets. A daycare facility sizes licensed classroom capacity against enrollment projections and the regulatory ratios that govern headcount per room. The production unit differs by vertical; the planning discipline is identical.

Dr. Skjei's Lake Dental Care is an example of what it looks like when the programming is done right. The facility was designed to accommodate a practice at scale — 10,000 patients and $4M or more in annual production. That didn't happen by accident. It happened because the build was planned around a growth model, not just the practice's current state. The operatory count, the staffing model, the patient flow design — all of it was sized for where the practice was going, not just where it was. The result is a facility that supports the business it was designed to serve.

Operatory count also affects facility value at exit. When a practice owner eventually sells, the facility's configuration is part of the asset. A practice in a purpose-built facility with room to grow commands a different valuation than one in a space that's been maxed out. The buyer of a dental practice is not just buying patient charts and equipment — they're buying the production capacity of the space those patients are seen in. An undersized facility constrains what a buyer can pay, because the buyer is also inheriting the need to eventually fix the footprint problem. A well-designed facility with appropriate chair count, modern systems, and room in the structure for growth is an asset that transfers value efficiently.

This is not a decision to arrive at intuitively. It requires a conversation about the practice model before anyone draws a single line on paper — what the practice generates today, what the growth plan looks like over a realistic five-to-seven year horizon, what the staffing model requires, and what the debt service on various footprint options actually looks like against projected production. The answer to "how many operatories" is the output of that analysis, not the input to it.

If you're planning a build and haven't had that conversation yet, primus-companies.com is a good place to start it.