Why assisted living is a strong cost seg candidate
Assisted living facilities (ALFs), memory care communities, and senior housing complexes contain a high concentration of specialized building systems and equipment that qualify for accelerated depreciation. These components — nurse call systems, emergency power systems, wander-guard systems, medical gas piping, specialized HVAC for controlled environments — may be reclassified from 39-year real property into 5- or 7-year personal property or 15-year land improvements.
A typical office building might see 15–20% of its cost reclassified in a cost segregation study. Assisted living facilities often see 20–35% or more reclassified, because the specialized systems and purpose-built components are a larger share of total construction cost.
Common components reclassified in a senior housing cost seg
5-year personal property often includes: nurse call and emergency call systems, medical equipment rails and lifts, specialized kitchen equipment (for dietary services), therapy and activity room equipment that is not structurally attached, and dedicated computer and communication systems.
7-year personal property may include: specialized HVAC units serving individual rooms or memory care wings, dedicated electrical service panels for medical equipment, and certain interior finishes in care rooms.
15-year land improvements include: parking areas, exterior lighting, landscaping, sidewalks and accessible pathway systems, and site drainage improvements. These components qualify for bonus depreciation at the same rates as other personal property.
Qualifying the study and maximizing bonus depreciation
For the reclassified components to benefit from bonus depreciation, the study must be an engineered (not rule-of-thumb) cost segregation analysis conducted by a qualified engineer. IRS audit technique guidelines for cost segregation require the study to trace reclassified components to actual cost documentation — blueprints, construction contracts, and invoices.
The study is typically worth pursuing for assisted living and senior housing acquisitions with a total cost basis of $1 million or more. For new construction or major renovations, the study can be performed by the time the property is placed in service to capture the full first-year bonus depreciation deduction. For existing properties, an IRS-approved accounting method change (Form 3115) can capture prior-year missed depreciation in one lump in the year the study is completed.
100% bonus depreciation is back for 2025 and later
The rules changed significantly in 2025. The One Big Beautiful Bill Act restored 100% bonus depreciation for qualified property acquired and placed in service after January 19, 2025, and made it permanent. That reverses the earlier phase-down, which had dropped bonus to 60% in 2024 and would have fallen to 40% in 2025. For a senior housing owner, this means the 5-, 7-, and 15-year components a cost segregation study identifies can once again be written off entirely in the first year — magnifying the first-year deduction from a study.
Property acquired under a written binding contract before January 20, 2025 may still be subject to the older phase-down percentages, so the acquisition date matters. Confirm your placed-in-service and acquisition dates with your advisor to apply the correct bonus rate.
A worked example for a senior housing acquisition
Suppose you acquire a memory care facility for $6,000,000, of which $1,000,000 is allocated to land (non-depreciable) and $5,000,000 to the building. Without a study, the entire $5,000,000 depreciates straight-line over 39 years — about $128,000 per year. With an engineered study reclassifying 30% of the building, roughly $1,500,000 shifts into 5-, 7-, and 15-year property.
Under 100% bonus depreciation, that $1,500,000 is deductible in year one, on top of the first-year straight-line depreciation on the remaining $3,500,000 of 39-year property. Instead of roughly $128,000 of first-year depreciation, the owner could see well over $1.6 million — a difference that can shelter substantial facility income or, for a materially participating owner, other income. The tradeoff is a lower depreciation base in later years and larger recapture at sale.
Using the deduction: passive activity and grouping rules
A large first-year loss is only valuable if you can use it. Rental and most senior-housing income is passive under Section 469 unless an exception applies. If the facility is operated as an active business providing substantial services (typical of assisted living and memory care with meals, medical, and personal-care services), the income and losses may be non-passive — a meaningful distinction, because it means bonus-driven losses can offset other non-passive income. Owners who lease the real estate to an operating entity they control should watch the self-rental rules, which can recharacterize rental income.
Where the activity is passive, the losses offset passive income and any excess is suspended and carried forward under Section 469, released in full when you dispose of the property in a taxable sale. Qualifying as a real estate professional, or grouping activities appropriately, can change the analysis. Model this before spending on a study.
Recapture when you sell the facility
Accelerated depreciation is a timing benefit, not a permanent one. When you sell, the depreciation on the reclassified 5- and 7-year personal property is recaptured as Section 1245 ordinary income — potentially at rates higher than the capital-gain rate you would have paid without the study. Depreciation on the building is unrecaptured Section 1250 gain, taxed at up to 25%.
This does not make a study a bad idea — the time value of deducting now and recapturing later is usually favorable, especially with 100% bonus — but it does mean you should plan the exit. A future 1031 exchange can defer the recapture, and a step-up in basis at death can eliminate it, so the study pairs well with a long-term hold or an estate plan.
Section 179 and qualified improvement property for renovations
Beyond a full study, two tools help with senior-housing improvements. Qualified Improvement Property (QIP) — interior, non-structural improvements to the interior of nonresidential real property placed in service after the building was first placed in service — is 15-year property eligible for bonus depreciation. Renovations to common areas, care rooms, and dining spaces frequently qualify.
Section 179 expensing is a separate election that lets you immediately deduct the cost of qualifying property, including certain improvements to nonresidential buildings (roofs, HVAC, fire protection, and security systems). The One Big Beautiful Bill Act increased the Section 179 limit to $2.5 million, with the phase-out beginning at $4 million of purchases, for tax years beginning after 2024, both indexed for inflation. Unlike bonus depreciation, Section 179 cannot create or increase a loss, so it is often used to fine-tune the deduction. Confirm the current-year limits with your advisor.
Who should perform the study, and what it costs
An engineered cost segregation study is performed by professionals who combine engineering and tax expertise: they review construction documents, inspect the property, and allocate costs to asset classes with documentation that meets the IRS Cost Segregation Audit Techniques Guide. A rule-of-thumb or residual estimate will not withstand audit and can jeopardize the accelerated deductions. For a senior housing facility, expect a study to cost several thousand to tens of thousands of dollars depending on size and complexity — typically a small fraction of the first-year tax savings on a facility over $1 million.
Ask for references and sample reports, confirm the firm defends its studies under audit, and make sure the engagement covers the Form 3115 change if you are catching up missed depreciation on an existing property.
Common mistakes with senior housing cost segregation
Watch for these errors: treating the study as a permanent tax cut rather than a deferral (recapture awaits at sale); performing a study when you cannot use the losses because the income is passive and you have no passive income to offset; misclassifying structural components as personal property (a frequent audit target); and overlooking the interaction with the tangible property regulations, which govern repairs, improvements, and partial dispositions. Done correctly and paired with a clear plan to use the deductions, a study is one of the most powerful tools in real estate tax planning; done carelessly, it invites an audit adjustment.
Frequently asked questions
What percentage of an assisted living facility can typically be reclassified?
It varies, but 20–35% of the depreciable building cost is common, due to the high concentration of specialized care systems and equipment. Engineered studies vary by facility.
Does bonus depreciation apply to cost seg components in an assisted living facility?
Yes. 5-year and 7-year personal property reclassified in the study qualifies for bonus depreciation. The One Big Beautiful Bill Act restored the rate to 100% for qualified property acquired and placed in service after January 19, 2025, and made it permanent (property under a binding contract before that date may use the earlier phase-down rates).
Do assisted living facilities qualify as nonresidential real property?
Most assisted living and senior care facilities are classified as commercial (nonresidential) real property, with a 39-year depreciation schedule for the building itself — making the reclassification of shorter-life components especially valuable.
What is the depreciation recapture when I sell an assisted living facility after a cost seg study?
The 5- and 7-year personal property is recaptured as Section 1245 ordinary income; the building depreciation is unrecaptured Section 1250 gain taxed at up to 25%. A 1031 exchange can defer recapture and a step-up at death can eliminate it.
Can I use Section 179 on senior housing improvements?
Yes, for qualifying property such as HVAC, roofs, fire protection, and security systems, subject to the annual dollar limit and the rule that Section 179 cannot create a loss. Interior improvements may also qualify as 15-year QIP eligible for bonus depreciation.
How much of an assisted living facility's cost can bonus depreciation cover in year one?
With 100% bonus depreciation restored, all of the 5-, 7-, and 15-year components identified by an engineered study — often 20% to 35% of the building cost — can be deducted in the first year, in addition to the first-year straight-line depreciation on the 39-year building. On a large facility this can turn a modest first-year deduction into one worth well over a million dollars, provided the losses can be used against the facility's income or your other non-passive income.
Sources
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.