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Medical & Dental Space Resource Center

How Much Space Does a Medical Practice Need?

Generic per-doctor ratios tell you little about your own schedule. A short calculation built from your own numbers gets you much closer.

Two people meeting across a desk

By Tenant Advisory Group · Updated

Short answer

Your space need comes from your own operations: how many providers work at once, how many exam rooms each uses at peak, what procedure and support rooms you need, and how much waiting area your schedule creates. Add room for growth, have a planner draw it, then convert usable area to the rentable area a landlord quotes. Treat any published ratio as a rough check only.

Start with peak, not with average

A medical practice does not fill its space evenly. Space is sized for the busiest ordinary session, the Tuesday morning when every provider is in clinic at once. So the first number you need is how many providers are seeing patients at the same time, not how many are on the payroll.

Part-time and rotating schedules can change the answer more than headcount does. Two providers who never overlap may share rooms. Two who always overlap cannot. Before you talk about square feet, lay out a typical week by half-day and mark who is in clinic in each block, including any provider you expect to add during the lease.

Work out exam rooms from patient flow

Exam rooms per provider is an operational choice, and it belongs to you. A practice that wants a provider moving between prepared rooms will choose differently from one that keeps a patient in the same room for intake, the visit and checkout. Use your own timing data if you have it.

  1. Note how many patients a provider sees in a busy hour.
  2. Time how long a patient occupies a room from rooming to turnover, in hours.
  3. Multiply the two. The result is the number of rooms that provider keeps busy at peak.
  4. Multiply by the number of providers in clinic at the same time.
  5. Add rooms that are not interchangeable, such as procedure rooms, or a room set up for accessible exams, if they cannot also be counted as exam rooms.

Hypothetical, for illustration: 4 patients an hour x 0.75 hours in a room = 3 rooms per provider. With 2 providers in clinic at once, that is 6 exam rooms. These inputs are invented. Use your own.

A larger room count is not automatically better, since each room costs rent and build-out for every year of the lease. Test the count against your slowest realistic day as well as your busiest.

List everything that is not an exam room

Support space is where estimates tend to fall short, because it is easy to picture the exam rooms and forget the rest. Make a room-by-room list and mark what can be shared.

  • Reception, check-in and checkout, including a place for private conversation.
  • Waiting area, sized from the patients and companions present at your peak.
  • Nurse or medical assistant stations, and any triage or vitals area.
  • Clean and soiled utility, sterilization and storage for supplies.
  • Lab, imaging or other specialty rooms, each with its own systems.
  • Medication storage, and secure storage for any paper records.
  • Provider offices, staff break room and staff restroom.
  • Patient restrooms, corridors and doors wide enough for wheelchair and stretcher movement.
  • Server closet, mechanical and any waste holding area.

Waste storage deserves a line of its own. The U.S. EPA notes that medical waste is regulated mainly by states, so ask your state agency and waste vendor what storage you need before fixing the plan.

Accessibility and privacy affect room size

Some of these rooms cannot be drawn at the smallest size that fits a table. An ADA.gov publication on medical care for people with mobility disabilities explains that an accessible exam table needs enough clear floor space beside it for a person using a wheelchair to approach and transfer. It adds that providing clear floor space on both sides allows one table to serve both right- and left-side transfers.

The same publication says not every exam room will necessarily need an accessible table, and that the number depends on factors such as the size of the practice and its patient population. Have your architect or a qualified accessibility consultant size those rooms and the routes to them.

Privacy can also change the plan. HHS says the HIPAA Privacy Rule requires reasonable safeguards and does not treat facility restructuring as a requirement, but a tight reception area that forces every conversation into the open is still a layout problem you can avoid at the drawing stage.

Plan for growth and do not overshoot

A lease commits you to a fixed area for its whole term. Too little space caps revenue, and too much space means paying for empty rooms. Decide what growth you are sizing for, and consider ways to get more room later without carrying it now.

  • How many providers do we realistically expect to add during the initial term?
  • Could we extend hours or stagger schedules before adding rooms?
  • Can some rooms be roughed in for plumbing now and finished later?
  • Can we negotiate a right to lease adjacent space, or a right of first refusal on it?
  • Could we sublease part of the suite if growth does not arrive, and does the lease allow it?
  • If our landlord or subtenant is a referral source, has counsel reviewed the size of the space?

That last question matters because the size of the space is part of the federal analysis in some leases. The Stark exception for office space rental and the Anti-Kickback space rental safe harbor each refer to space that does not exceed what is reasonable or reasonably necessary for the lease's business purpose. Whether those rules touch your lease is for healthcare counsel to decide.

Turn the list into a number a landlord can use

Once you have a room list, add room sizes from your planner, plus corridors and walls, to get a usable area, meaning space inside your suite. Landlords often quote rentable area, which includes a share of common areas. A law firm guide to medical and dental leases advises being clear about which one a lease figure means and how it is calculated.

Hypothetical, for illustration: a plan needing 3,000 usable square feet, in a building with a 1.15 load factor, would be quoted as 3,450 rentable square feet (3,000 x 1.15). Load factors vary by building, so get the actual figure.

The final test is a test-fit: a planner's quick drawing of your room list in a specific suite. Column spacing, window lines and plumbing locations can make one suite work and a similar one fail. TAG helps practices compare suites on the same basis, so that rent is measured against rooms that actually fit, not just against quoted square feet.

Frequently asked questions

Is there a standard number of exam rooms per doctor?

We do not rely on one. It depends on specialty, patient flow and staffing. Calculate it from your own visit volume and room time, then have a planner test it.

Should we count only the space we use today?

No, but be disciplined about growth. Size for providers you can realistically expect during the initial term, and use expansion rights or subleasing flexibility for anything less certain.

Why is the lease area larger than our floor plan shows?

Leases often state rentable area, which includes a share of common areas such as lobbies and corridors. Ask how the figure was measured and what load factor the building uses.

Do telehealth visits reduce how much space we need?

They can, if they actually take patients off your busiest in-person sessions. Check against your schedule, and remember that providers doing virtual visits still need a private place to work.

Sources

This guide is general information, not legal, regulatory or tax advice. Have healthcare counsel and your CPA review any transaction before you commit to it.

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