Cost Segregation for Medical Office Buildings: Specialty Systems That Qualify as 5-Year Property
Why Medical Office Outperforms Standard Office
A medical office building looks like an office building from the parking lot. Inside, it is a substantially different asset for depreciation purposes. Clinical space is dense with specialty systems installed to serve specific equipment, and under the tax code, building systems that serve particular equipment rather than the building as a whole are Section 1245 personal property rather than structural components.
That distinction is worth real money. Standard office properties typically reclassify 15 to 28 percent of depreciable basis. Medical office buildings routinely reach 25 to 35 percent, and imaging-heavy or surgical facilities can exceed that. The difference is entirely in the specialty infrastructure.
Medical office remains nonresidential real property on a 39-year schedule by default, so the gap between what the standard schedule delivers and what a study delivers is unusually wide in this asset class.
The Specialty Components That Drive the Number
Medical gas systems are the signature MOB component. Oxygen, nitrous oxide, medical air, and vacuum lines, along with the manifolds, alarms, and outlets they feed, serve clinical equipment rather than the building, and qualify as 5-year property.
Lead shielding in radiology and imaging suites is another. Lead-lined walls, doors, and viewing windows exist solely to support the imaging equipment and are classified with it. The dedicated high-amperage electrical service running to an MRI, CT, or X-ray suite follows the same logic, as does the supplemental cooling installed specifically to keep imaging equipment within its operating temperature range.
Beyond the marquee items, MOBs carry heavy amounts of ordinary 5-year property: casework and cabinetry in exam rooms, sinks and plumbing serving specific clinical fixtures, nurse call systems, sterilization and autoclave utility connections, exam lighting, vinyl and specialty flooring, millwork at reception, data cabling, and security and access control.
Site work contributes the 15-year layer: patient parking, ambulance and drop-off aprons, sidewalks, site lighting, signage foundations, and landscaping. Medical office generally parks at a higher ratio than general office, which helps.
A $4 Million Medical Office Example
Take a 16,000 square foot multi-tenant medical office building purchased for $4,000,000, with $500,000 allocated to land. Depreciable basis is $3,500,000, producing $89,744 per year on the standard 39-year schedule.
An engineering-based study identifies $665,000 of 5-year property (19 percent, reflecting the clinical infrastructure across several suites) and $437,500 of 15-year land improvements (12.5 percent). Total reclassification is $1,102,500, or 31.5 percent of basis.
With 100 percent bonus depreciation, the first-year deduction is $1,102,500 plus approximately $61,500 on the remaining $2,397,500 shell, totaling roughly $1,164,000. Compared to the $89,744 standard deduction, the owner picks up an additional $1,074,000 in year one. At a combined 40 percent marginal rate that is roughly $430,000 of tax deferred.
Practice Owners Who Own Their Building
A large portion of medical office is owned by the physicians or physician groups who practice there, typically through a real estate LLC that leases to the practice entity. For these owners the analysis is more favorable than for a passive MOB investor.
Rental income from a self-rental to a business in which you materially participate is recharacterized as non-passive under Regulation 1.469-2(f)(6). With a properly considered grouping election, the accelerated depreciation may be usable against practice income rather than suspending as a passive loss. That turns a paper deduction into a current-year tax reduction for the physician owner.
The structure needs to be set up correctly and the election documented contemporaneously, which is a planning exercise rather than a filing exercise. AE Tax Advisors works with practice owners on this specific fact pattern through their physician cost segregation and physician tax planning services.
Buildouts, Look-Backs, and Suite Turnover
Medical suites are expensive to build and are rebuilt when a tenant changes specialty. Interior nonstructural buildout performed after the building was placed in service is qualified improvement property, recovered over 15 years and bonus eligible, rather than being buried in the 39-year shell. Landlords who capitalize buildouts to the building without segregating QIP are systematically over-lengthening their recovery period.
If you already own the building and have been depreciating it straight-line, a look-back study filed with Form 3115 recovers every dollar of missed acceleration in the current tax year through a Section 481(a) adjustment. There is no amended return and no lookback limit. Practices that bought their building in 2019 or 2015 and never ran a study are usually the largest single opportunities we see in this asset class.
Watch the Line Between Building Systems and Equipment
Medical office studies attract more scrutiny than most, because the classifications are more aggressive and the dollar amounts per square foot are higher. The distinction that matters most is between a system that serves the building and one that serves specific equipment.
The main electrical service, the general HVAC serving the suite, the base plumbing, and the fire protection system are structural components on the building's recovery period, however clinical the building is. What reclassifies is the branch that runs to a particular machine: the dedicated feeder to the MRI, the medical gas line to a specific outlet, the supplemental condenser installed for the imaging room.
Studies that sweep entire mechanical and electrical systems into the 5-year bucket because the building is a medical facility are exactly the fact pattern the IRS Cost Segregation Audit Techniques Guide warns examiners about. A defensible report traces each run, states what it serves, and cites the authority for the classification.
This is also why photographs and mechanical drawings matter in the deliverable. When a study is examined years later, the documentation is the argument.
Getting a Study Scoped
Stratum performs engineering-based cost segregation studies on medical office buildings, ambulatory surgery centers, imaging centers, and clinical space nationwide. Our reports document each specialty system, the basis assigned to it, and the authority supporting its classification, so the position holds up under examination.
Request a free estimate or book a call with your building details and we will give you a realistic reclassification range for your property.