How to Turn a Renovation Into a Tax Strategy: A Step-by-Step Guide to PAD and QIP

TL;DR: Commercial real estate owners who renovate without using Partial Asset Disposition (PAD) and Qualified Improvement Property (QIP) are overpaying taxes on work they've already done. PAD lets you write off the remaining basis of components you tear out. QIP lets you rapidly expense new interior improvements. Together, supported by an engineering-based cost segregation study, they convert a routine capital project into a significant deduction.

• PAD deducts the remaining undepreciated basis of retired building components in the year they're disposed of.

• QIP covers interior improvements to existing nonresidential buildings and qualifies for 15-year MACRS depreciation.

• 100% bonus depreciation is permanently restored for qualified property acquired and placed in service after January 19, 2025.

• The PAD election must be filed on the originally filed return for the year of disposition. There's no second window.

• An engineering-based cost segregation study is the practical mechanism that makes both strategies defensible.

Step 1: Understand What PAD Actually Does

When you replace a roof, swap out rooftop HVAC units, or demolish interior finishes during a tenant buildout, the old components still carry undepreciated value on your books. Without action, you keep depreciating assets that now sit in a dumpster. That's what ghost depreciation looks like, and it quietly distorts your fixed asset records for decades while you unknowingly pay taxes on value that no longer exists.

PAD is an election that lets you deduct the remaining basis of those retired components in the year you dispose of them. One deduction, taken once, in the correct year.

PAD typically applies when you:

• Replace a roof or roofing membrane

• Swap packaged rooftop HVAC units

• Remove and replace interior lighting

• Demolish interior finishes during a tenant buildout

• Mill and resurface an asphalt parking lot

• Replace electrical panels or distribution runs

• Remove built-in millwork, partitions, or ceilings

There's an underappreciated bonus inside the election. When you elect PAD, the labor cost of removing the old component becomes currently deductible instead of being capitalized into the new asset. That's a detail worth knowing about.

Key Point: PAD cleans up ghost depreciation and delivers an immediate deduction on removed components, including the labor cost to remove them.

Step 2: Respect the Deadline, Because It's Absolute

The PAD election must be taken in the same tax year the components were disposed of. Miss that window and the deduction is gone permanently. The election must appear on the originally filed return, and amended returns don't open a second chance.

Tip: If you completed any demolition or component replacement this year, flag it for your tax professional now, before the return is filed. This step is commonly overlooked, and the cost of overlooking it is permanent.

Key Point: The year of disposition is the only window for the PAD election. Filing early and flagging recent demolition work is the only way to protect it.

Step 3: Understand What QIP Covers

QIP is any improvement made to the interior of an existing nonresidential building, placed in service after the building's original in-service date. It receives a 15-year recovery period instead of the standard 39 years, and it's generally eligible for bonus depreciation.

QIP includes:

• Interior drywall, ceilings, and interior doors

• Interior lighting and branch wiring serving the interior

• Interior plumbing and mechanical distribution

• Interior finishes and nonstructural partitions

QIP excludes:

• Building enlargements

• Elevators and escalators

• The internal structural framework

• Exterior work, parking lots, site utilities, and roofing

The legislative landscape here got dramatically better. Recent law permanently restored 100% bonus depreciation for qualified property acquired and placed in service after January 19, 2025. That means the full cost of qualifying interior work can be deducted in the year it's placed in service, rather than trickling out over 15 years.

One clarification that comes up often. Your building's age is irrelevant. A new improvement is its own asset. Install a new interior component in 2026 and it qualifies for 100% bonus depreciation regardless of when the parent building was acquired.

Key Point: QIP turns 39-year interior improvements into 15-year property, and 100% bonus depreciation now makes year-one expensing the default for qualifying work placed in service after January 19, 2025.

Step 4: Combine Both Sides of the Renovation

Every renovation creates two deduction opportunities at once. You write off the old components through PAD, and you accelerate the new interior improvements through QIP. Capturing only one side is an expensive oversight that shows up years later when you realize what was left behind.

An engineering-based cost segregation study maps both sides. It quantifies the cost and remaining basis of what was removed, and it tags the new interior work as QIP while carving out shorter-life personal property such as casework, specialty lighting, and decorative millwork. The economics here are striking. Renovation studies routinely produce 60% to 70% accelerated allocation, compared to 20% to 28% for a typical acquisition study, because renovation work is dominated by finishes, fixtures, and site improvements.

Key Point: A cost segregation study is the practical mechanism that connects PAD and QIP into a single coordinated strategy, with documentation strong enough to support both positions.

Step 5: Walk Through Real Project Scenarios

Tenant refresh

You demolish interior partitions and install new ceiling grid, LED lighting, VAV boxes, carpet, and paint. PAD expenses the remaining basis of the removed partitions, ceilings, and old lighting. QIP covers the new interior finishes, lighting, and HVAC distribution, and 100% bonus applies where eligible.

Roof and rooftop unit replacement

You remove the old membrane and replace the rooftop units. PAD deducts the remaining basis of the old membrane and units. Roofing does not qualify as QIP, and new rooftop units typically remain 39-year property. PAD still delivers an immediate deduction on everything removed.

Lighting retrofit

You pull fluorescent troffers and ballasts and install LEDs. PAD deducts the remaining basis of the removed fixtures. The new interior lighting generally qualifies as QIP with bonus eligibility.

Parking lot mill and overlay

You mill two inches of asphalt and overlay. PAD expenses the remaining basis of the milled layer. Parking lots fall outside QIP, though they're 15-year property and bonus-eligible when the other rules are met.

Key Point: Every project type generates at least one deduction opportunity. Most generate two.

Step 6: Build Your Documentation Before Construction Starts

The strength of both strategies rests on your records. Here's what to gather:

• Original building cost detail or a prior cost segregation report

• Contractor contracts, schedules of values, change orders, and pay applications

• Demolition logs identifying exactly what was removed

• In-service dates for new improvements

• Your fixed asset register with accumulated depreciation to date

The ideal time to engage a study provider is before construction begins, or as soon as the scope is defined. Early involvement lets the cost tracking align with PAD and QIP categories from day one, so your contractor's pay applications feed directly into defensible classifications.

Key Point: Documentation built before and during construction is significantly stronger than documentation reconstructed after the fact.

Step 7: Avoid the Pitfalls That Erase the Benefit

• Lumping all renovation costs into 39-year building property. This buries deductions that belong in year one.

• Failing to quantify the retired portion. Without a number, there's no PAD deduction.

• Commingling interior and exterior costs. Sloppy allocation jeopardizes QIP treatment.

• Missing the timely-filed election. The year of disposition is the only window.

• Thin records. Estimates without support invite scrutiny and shrink the defensible deduction.

Cost segregation is often the only practical way to credibly assign cost and basis to retired components. A study performed at acquisition creates the component schedule that supports every future PAD across the entire holding period. The two strategies compound in value the longer you hold the property.

Key Point: The pitfalls here are avoidable. They're the product of treating renovation as a construction event rather than a tax event.

The Recap

Renovations create a dual tax opportunity. PAD writes off the remaining basis of everything you remove, and the election lives or dies in the year of disposition. QIP accelerates new interior improvements, now with permanent 100% bonus depreciation for property placed in service after January 19, 2025, regardless of your building's age. An engineering-based cost segregation study quantifies both sides and produces the documentation your tax professional needs to support every position with confidence.

If you have a recent or upcoming project, reviewing the scope now is where the savings begin. A clear estimate of what's available is a conversation away, and the window for this year's disposals is already moving.

Frequently Asked Questions

What is Partial Asset Disposition (PAD)?

PAD is a tax election under Treasury Regulation 1.168(i)-8(d)(2) that allows building owners to deduct the remaining undepreciated basis of a replaced or retired building component in the year it's disposed of, rather than continuing to depreciate an asset that no longer exists.

What qualifies as Qualified Improvement Property (QIP)?

QIP is any improvement made to the interior of an existing nonresidential building, placed in service after the building's original in-service date. It excludes building enlargements, elevators, escalators, the internal structural framework, roofing, and exterior improvements.

Can PAD and QIP be used on the same renovation project?

Yes. A renovation typically removes old components and installs new interior improvements simultaneously. PAD applies to the removed components; QIP applies to the qualifying new interior work. Capturing both on the same project is the strategy.

What is the deadline for making the PAD election?

The PAD election must be made on the originally filed tax return for the year in which the component was disposed of. It cannot be made on an amended return, and there's no catch-up provision for missed years.

Does the age of my building affect QIP eligibility?

No. QIP eligibility is based on when the improvement is placed in service, not when the building was acquired. A new interior improvement installed in 2026 qualifies for current bonus depreciation rules regardless of the parent building's age.

What bonus depreciation rate applies to QIP in 2025 and beyond?

The One Big Beautiful Bill Act, signed July 4, 2025, permanently restored 100% bonus depreciation for qualified property acquired and placed in service after January 19, 2025. QIP acquired between January 1 and January 19, 2025 falls under the prior-law phase-down at 40%.

Why is an engineering-based cost segregation study important for PAD and QIP?

A cost segregation study provides the component-level cost detail needed to quantify retired basis for PAD and to classify new work as QIP versus longer-life property. Without that level of precision, both elections become difficult to defend under IRS scrutiny.

Can parking lots benefit from PAD even though they don't qualify as QIP?

Yes. When asphalt is milled and overlaid, the milled layer represents a retired asset eligible for PAD. Parking lots are 15-year property and may be eligible for bonus depreciation under separate rules, but they fall outside the QIP definition.

Key Takeaways

• PAD converts retired building components into an immediate deduction by writing off their remaining undepreciated basis in the year of disposal.

• QIP reclassifies qualifying interior improvements from 39-year to 15-year property, making them eligible for bonus depreciation.

• 100% bonus depreciation is permanently restored for qualified property acquired and placed in service after January 19, 2025.

• The PAD election must be made on the originally filed return for the year of disposition. Amended returns don't provide a second chance.

• Renovation studies typically produce 60% to 70% accelerated allocation, substantially higher than the 20% to 28% typical for acquisition studies.

• An engineering-based cost segregation study is the mechanism that makes both strategies accurate, coordinated, and auditor-ready.

• Documentation built before and during construction produces stronger, more defensible results than anything reconstructed after the fact.