Buying vs. Leasing a Dental Office in New York City, the NY Metro, and New Jersey

By Spiro Leunes, CPA | CEO, MRL Advisory Group – New Jersey and New York Dental CPAs

At some point in nearly every practice owner's career, the same question arrives. Keep paying rent, or buy the building the practice operates in?

Sometimes a landlord hints that he would sell. Sometimes a lease renewal arrives with a difficult escalation clause. Sometimes a colleague at a study club has just purchased his own unit and cannot stop talking about it.

However it arrives, most dentists answer with instinct rather than analysis. Rent is money down the drain, or I do not want to be a landlord. In reality, whether to buy or lease your office is one of the most consequential financial decisions of your career, second only to buying the practice itself. If you are still weighing that first decision, see our guide on buying a dental practice versus starting one in New York and New Jersey.

The right answer is different in Manhattan than it is in Northern New Jersey, and the reasons are worth understanding before you sign anything.

Rent Versus Own Is a Financial Decision, Not a Slogan

"Rent is throwing money away" is not analysis. Neither is "I do not want the headache." Both buying and leasing can be the correct answer for a given dentist.

The honest version of the question is more specific. What does each path do to your cash flow today, your taxes every year, and your wealth at the eventual sale?

Leasing preserves capital and flexibility. If the practice may relocate, expand beyond its current footprint, or sell to a buyer who wants a different location, a lease keeps those options open. Across New York City, Westchester, Long Island, the outer boroughs, and much of Northern New Jersey, commercial prices are high enough that the purchase math simply does not work on some properties.

When the numbers do work, ownership does three things a lease never will. It converts a permanent expense into equity. It provides one of the better tax structures available to a practice owner. And it creates a second asset that you can sell, or continue to collect rent on, long after you stop practicing.

Why the Building Should Never Sit Inside Your Practice

If you buy, the real estate should almost never be owned by your practice entity. The standard structure is a separate LLC that owns the property and leases it back to the practice at fair market rent.

The separation matters for three reasons.

The first is liability. Your building should not be exposed to practice liabilities, and your practice should not be exposed to an accident in the parking lot.

The second is the exit. When you sell the practice, the real estate remains yours if you want it to. This is the part most dentists underestimate, and it is covered in detail below.

The third is the rent itself. Every month the practice pays rent it would have paid regardless. In this structure that payment lands in your LLC rather than a landlord's account, and it services a mortgage that builds your equity. How the rent and your practice profit are ultimately taxed depends on your entity setup, which we cover in how dentists should pay themselves.

One caution before you get creative. The IRS applies specific self-rental rules. When the rental produces income, that income is generally treated as non-passive, and it cannot be used to absorb passive losses from other investments. When it produces a loss, the loss is generally treated as passive and may be limited. There is a well established election that addresses this, discussed further below. The rent must also be defensible as fair market value. Charging your practice inflated rent to shift income is not a strategy, and it will invite scrutiny. This structure should be established correctly on the first day, not corrected later. It is the kind of work our tax services and acquisition advisory services are built to handle before closing.

The New York City Co-op Problem Most Dentists Miss

New York City changes this conversation in a way many dentists do not anticipate.

A large share of the medical and professional office space in Manhattan, and in parts of the outer boroughs, is not sold as a condominium or a standalone building. It is held as a cooperative, or co-op. A co-op can quietly cancel almost every advantage of ownership described above.

In a co-op you do not receive a deed. You purchase shares in a cooperative corporation and receive a proprietary lease for your unit. That single fact affects the entire strategy.

The board controls your exit. A co-op board typically must approve any buyer of your shares, and it can reject one. The clean exit that makes ownership attractive becomes subject to another party's approval.

Subletting is often restricted, and that restriction can undo your retirement plan. The signature ownership move is to sell the practice, keep the space, and lease it back to the buyer. That plan depends entirely on your right to sublet. Many co-ops restrict or prohibit subletting, or require board approval and charge sublet fees. In a restrictive co-op, the income stream you were counting on may not be permitted at all.

Entity ownership may not be allowed. Many co-op boards will not permit shares to be held by an LLC, or they will require personal guarantees. That undermines the liability separation and the clean structure that are the entire purpose of the separate real estate LLC.

Build-outs require board approval. Operatory plumbing, electrical work, and equipment installation fall under the board's alteration agreement. Specialized dental infrastructure can draw scrutiny and cause delay.

Financing and resale carry added friction. Co-op share loans differ from commercial mortgages, some boards cap financing or require larger down payments, and flip taxes or transfer fees can reduce your eventual sale proceeds.

The tax treatment is also different. Because you own shares and a proprietary lease rather than real property, depreciation and cost segregation are more complicated than they are for a building you own outright. Deductions may still be available, but the analysis differs, and it should be reviewed with your tax advisor before you assume the cost segregation benefits below apply.

The practical conclusion for New York City is straightforward. If ownership, the LLC structure, and the lease-back exit matter to you, a commercial condominium or a standalone building is usually a far better fit than a co-op. A condominium conveys a deed, can generally be held in an LLC, and typically allows more freedom to sublease, subject to its bylaws. Standalone buildings, which are more common in the outer boroughs, Westchester, Long Island, and across Northern New Jersey, offer the most flexibility. Before committing to a Manhattan medical co-op, read the offering plan, the proprietary lease, and the rules on entity ownership, subletting, and alterations, or have us review them with you. A co-op can defeat your liability structure, your tax structure, and your exit strategy at the same time.

The Tax Advantages of Owning Your Dental Building

A commercial building depreciates over thirty-nine years, which is slow and unremarkable on its own. The building, however, is more than walls and a roof.

A cost segregation study separates the purchase into components. The plumbing and electrical serving your operatories, the cabinetry, the flooring, the site improvements, and the parking can often be reclassified into five, seven, and fifteen year property. That reclassification produces substantially accelerated deductions, and when bonus depreciation is available, a large share of those costs can often be deducted immediately. Bonus depreciation rules changed again this year, which we cover in our 2026 dental practice tax planning guide.

Cost segregation tends to work harder for a dental office than for generic office space, because so much of the build-out is specialized infrastructure. Engineering based studies routinely reclassify a higher share of a dental practice's cost than they do for a typical commercial property. On the right property, one that you own outright as a condominium or a standalone building, the first year tax savings can meaningfully offset your down payment.

The Self-Rental Rules and the Grouping Election

This is the point that separates a good structure from a strong one, and it is where the self-rental rules return.

Left unaddressed, a large first year cost segregation loss inside your building LLC can be trapped as a passive loss. That means it cannot be used to offset the income from your practice, which is exactly what you would want it to do.

The solution that experienced advisors use is a grouping election under the passive activity rules. When the conditions are met, that election allows your building LLC and your practice to be treated as a single economic unit, and the accelerated depreciation can offset practice income rather than sitting idle. The conditions are specific. Ownership must line up correctly between the practice and the building, and the election must be made properly. This is precisely the kind of planning to complete before closing, not the following April.

How Owning the Building Changes the Sale of Your Practice

This is the part that connects directly to the valuation of your practice. When you eventually sell, owning the building provides options a tenant never has.

You can sell the practice and keep the building. The buyer, whether an individual or a DSO, signs a long term lease, and you collect rent for the next ten or twenty years. For many dentists this becomes the retirement income stream. The practice sale is the lump sum, and the building is the annuity. DSO buyers in particular usually prefer to lease, so the building rarely obstructs that kind of transaction. The New York City exception applies here as well. In a restrictive co-op, subletting to your buyer may not be allowed.

You can sell both. Some individual buyers want the real estate too. In that case you are negotiating two assets, each with its own valuation and its own tax treatment.

You can sell the practice now and the building later. Real estate markets and practice markets do not move together. Owning them separately lets you time each sale on its own merits.

The way dentists exit has changed over the last decade, and the building is now a larger part of the calculation than it once was. We discuss this further in how dental practice succession has changed and how dentists should prepare for 2026.

There is a caution. A building can also complicate a sale when it is the wrong building. A space that is too small for a growing buyer, a co-op with restrictive rules, or deferred maintenance a buyer will price against you can all reduce the value of the real estate. The building helps your exit only when it is a property a buyer's practice actually wants to occupy.

The Questions That Actually Decide This

Before you sign anything, a few honest questions determine the answer.

Will you be in this location for ten years or more? Ownership rarely wins on a short horizon once transaction costs are included.

Does the practice cash flow support the purchase without strain? The down payment on commercial real estate is substantial. If buying the building starves the practice of working capital or delays equipment the operatories need, the practice comes first. It is the engine that pays for everything else.

Is the price appropriate for the market? In New York City, Northern New Jersey, and the surrounding metro, sellers often price medical and dental space at a premium precisely because dentists are motivated buyers. Obtain an independent appraisal, and do not let the appeal of ownership set the price.

If the space is in New York City, is it a co-op, and what do the rules actually permit? Review the proprietary lease and house rules before you become attached to the space. Entity ownership, subletting, and alterations are the three provisions that make or break the strategy.

Does the purchase fit your exit timeline? Buying a building at sixty-two with a plan to sell the practice at sixty-five is usually the wrong sequence. Buying at forty-five, with twenty years of paying rent to yourself ahead, is an entirely different equation.

Final Thoughts

The dentists who handle this decision well treat it as a financial modeling exercise. They compare the lease scenario against the purchase scenario, after tax, over ten and twenty years, and they include the eventual sale. The dentists who handle it poorly decide emotionally and then ask their CPA to justify the decision afterward.

If your landlord has raised the possibility of a sale, your lease renewal is approaching, or you have simply been wondering whether you should own rather than rent, bring us the numbers first. We help dental practice owners across New York City, the New York metro, and New Jersey model the buy versus lease decision, review co-op and condominium restrictions before you are committed, structure the ownership entity correctly, and coordinate the cost segregation and tax planning that make the transaction pay off. Our advisory services, tax services, and acquisition advisory services are built for exactly this decision.

To review your own situation, schedule a complimentary consultation with MRL Advisory Group. It is best to have this conversation before you sign the contract, not after.