Cost Segregation for Dental Practices: Operatory Buildouts and Specialty Plumbing
Dental Buildouts Are Dense With Reclassifiable Property
A dental office is one of the most equipment-intensive buildouts in commercial real estate on a per-square-foot basis. Every operatory requires water, drain, vacuum, compressed air, dedicated electrical, and data, all routed to a specific chair position. That infrastructure exists to serve dental equipment, not to serve the building, which is the exact distinction that separates Section 1245 personal property from a structural component.
The result is that dental practices routinely reclassify 30 to 40 percent of buildout cost into 5-year and 15-year property, against a default 39-year nonresidential schedule. For a practice owner who just spent $1,200,000 building out a new office, that difference is the largest tax item on the return.
This applies whether you own the building or are a tenant. Leasehold improvements you paid for are your depreciable asset, and they are subject to the same component analysis as owned improvements.
The Specialty Systems That Qualify
The central vacuum system, the air compressor, and the piping distributing both to each operatory serve dental equipment exclusively and classify as 5-year property. The same is true of the dedicated water lines and drains serving each chair, the amalgam separator, the nitrous oxide and oxygen delivery system, and the dedicated electrical circuits feeding chairs, lights, and delivery units.
Imaging infrastructure follows the same path. Lead shielding in walls around panoramic and cephalometric units, the dedicated high-amperage service to imaging equipment, and any supplemental cooling installed to serve that equipment are classified with the equipment rather than with the building.
Ordinary but substantial 5-year property fills out the picture: operatory casework and cabinetry, sterilization center millwork and the utilities serving the autoclave, reception and business office millwork, decorative and task lighting, specialty flooring, data and network cabling, nurse call and intercom, security and access control, and the mechanical room equipment supporting all of it.
If the practice owns the building rather than leasing, the 15-year land improvement layer adds patient parking, sidewalks, site lighting, signage foundations, and landscaping.
A $1.5 Million Practice Example
Consider a dentist who purchases a 4,000 square foot condo suite for $900,000 and invests $600,000 in a nine-operatory buildout, for $1,500,000 of total cost with $150,000 allocated to land. Depreciable basis is $1,350,000. On the standard 39-year schedule that produces $34,615 per year.
An engineering-based study identifies $459,000 of 5-year property (34 percent, concentrated in the operatory infrastructure, casework, imaging support, and cabling) and $67,500 of 15-year improvements (5 percent, limited because the suite is a condo with shared site work). Total reclassification is $526,500, or 39 percent of basis.
With 100 percent bonus depreciation, the first-year deduction is $526,500 plus roughly $21,100 on the remaining shell, totaling about $547,600. Against $34,615 under the default schedule, that is $513,000 of additional first-year deduction, worth roughly $190,000 in deferred federal tax at a 37 percent rate.
The Practice Owner's Advantage
Dental practice owners are in a better position than most real estate investors because of how the income flows. If the dentist owns the real estate through an LLC and leases to the practice, the self-rental rules under Regulation 1.469-2(f)(6) apply, and with an appropriate grouping election the depreciation may be usable against practice income rather than suspending as a passive loss.
If the dentist is a tenant and simply paid for the leasehold improvements, the analysis is simpler still: the improvements are assets of the practice, and the depreciation reduces practice income directly. There is no passive loss issue because the dentist materially participates in the practice.
Either way, the deduction is generally usable in the year it is generated, which is not true for a physician who buys a passive apartment building. AE Tax Advisors works with dental practice owners on this exact planning through their dentist cost segregation and practice entity structuring resources.
Practice Acquisitions and Existing Buildouts
If you bought an existing practice, part of the purchase price was allocated among equipment, leasehold improvements, and goodwill. Goodwill is a 15-year Section 197 intangible and is not eligible for bonus depreciation, so the allocation matters. A study cannot reclassify goodwill, but it can properly segregate the improvement component that was lumped into a single leasehold line item.
If you built out your office three or five years ago and capitalized the whole thing to a 39-year life, a Form 3115 look-back study recovers all the missed acceleration in the current year. This is common. Most dental buildouts are capitalized by a bookkeeper as one number, and nobody revisits it.
Tenants Should Confirm Who Owns the Improvements
Most dental practices lease their space, and lease terms determine who gets the depreciation. This is worth confirming before you assume a study is available to you.
If you paid for the buildout, the improvements are your asset and you depreciate them, even though they are physically attached to someone else's building. If the landlord paid and provided the space finished, the landlord owns and depreciates them, and you have nothing to segregate.
Tenant improvement allowances sit in between and are the most commonly misunderstood arrangement. When a landlord provides a TI allowance, the general rule is that the party who bears the economic cost and holds the benefits and burdens of ownership depreciates the improvements. An allowance that simply reimburses you for work you contracted and paid for is often treated as landlord property, while an allowance structured as a rent concession may leave the improvements with you. The lease language controls.
Get this answered before commissioning a study. It is a five-minute question for your attorney or CPA and it determines whether the entire exercise is worth running.
Getting a Number for Your Office
Stratum performs engineering-based cost segregation studies on dental offices, orthodontic and oral surgery practices, and multi-location DSO portfolios, including leasehold improvement studies for tenants.
Request a free estimate or book a call with your buildout cost and placed-in-service date.