Commercial Property Tax Appeal: How Businesses Can Challenge Overassessed Values

Key Takeaways

• A commercial property tax appeal gives business owners and investors a way to challenge an assessment that appears higher than the property’s actual value.
• Commercial properties are usually valued using income, comparable sales, replacement cost, or a combination of these methods.
• Outdated rents, unrealistic vacancy assumptions, incorrect cap rates, and poorly matched comparable properties can all affect an assessment.
• Business personal property tax may apply to equipment, furniture, machinery, and other business assets, and those values may also be appealable.
• Because commercial appeals often involve financial records, leases, market data, and valuation analysis, professional support can be especially valuable.

If you own a commercial property, there is a good chance that property taxes are one of your larger recurring expenses. When the assessed value rises, that increase can affect your operating costs for years.

The challenge is knowing whether the new value is reasonable.

Commercial properties are not all valued the same way, and the numbers behind an assessment may not tell the full story of your building. Your actual rents may be lower than the assessor assumes. Vacancy may have increased. A nearby property used as a comparison may be newer, renovated, or fully occupied, while yours is not.

Understanding the difference between assessed value and market value can help you see why the number on your tax notice may deserve a closer look.

A commercial property tax appeal gives you the opportunity to review those assumptions and challenge a value when the property data and market evidence support something lower.

How Commercial Property Is Assessed

There is no single formula used to value every commercial property.

An office building, hotel, retail center, warehouse, and manufacturing facility all generate value in different ways. Assessors generally look at one or more of three valuation methods depending on the property.

Valuation Method	What It Looks At	Commonly Used For
Income Approach	The income the property can reasonably generate	Offices, retail, multifamily, hotels, leased industrial property
Sales Comparison Approach	Recent sales of similar properties	Properties with reliable comparable sales
Cost Approach	What it would cost to replace the property, minus depreciation	Newer buildings and specialized properties

The Income Approach

If you own income-producing real estate, this may be the most familiar method.

The assessor estimates how much income the property should generate, subtracts expected operating expenses, and applies a capitalization rate, often called a cap rate, to arrive at a value.

In simple terms:

Net Operating Income ÷ Cap Rate = Estimated Property Value

You do not need to become a valuation expert to understand why the assumptions matter.

Imagine the assessor assumes your building is nearly full and collecting market-leading rents. Your actual property, however, has several vacancies and tenants receiving concessions. Those two pictures can produce very different values.

The cap rate matters too. A lower cap rate generally produces a higher indicated property value, while a higher cap rate generally produces a lower one.

For a commercial property tax appeal, these details can become an important part of the case.

The Sales Comparison Approach

The sales approach asks a straightforward question: What have similar commercial properties recently sold for?

The harder part is deciding what “similar” actually means.

Two office buildings may be a mile apart but have very different:

• Occupancy levels
• Building condition
• Tenant mix
• Lease terms
• Parking
• Renovations
• Access
• Age
• Amenities

A nearby sale can look comparable on paper while representing a very different investment in the real world.

That is why the quality of the comparable matters more than simply finding the closest recent sale.

The Cost Approach

The cost approach looks at what it would cost to replace the improvements today, then accounts for depreciation and adds the value of the land.

It often plays a larger role for newer buildings or specialized properties where there are fewer comparable sales.

The key word here is depreciation. An older commercial building may have outdated systems, functional limitations, deferred maintenance, or other issues that affect what a buyer would realistically pay.

Why Commercial Properties Can Be Overassessed

Commercial assessments are often built using large amounts of market and property data. That allows assessors to value many properties efficiently, but it also means the assumptions used in the model may not match what is happening at your individual property.

That is where we often see opportunities for appeal.

The Income Assumptions Do Not Match the Property

Your building may be experiencing:

• Higher vacancy
• Lower rents
• Tenant concessions
• Upcoming lease expirations
• Higher operating expenses
• Extended periods between tenants

If the assessor is working from more optimistic assumptions, the resulting value may be higher than the property’s actual performance supports.

This has become particularly important in parts of the office market, where vacancy, leasing demand, and building quality can vary significantly from one property to another.

A newer, amenity-rich building with strong occupancy should not automatically set the standard for an older building struggling to retain tenants.

The Cap Rate Does Not Reflect Current Conditions

Cap rates change as the market changes.

Interest rates, financing costs, tenant demand, location, property condition, and investor expectations can all affect the rate buyers are willing to accept.

If an assessment relies on a cap rate that does not reflect the risk or market position of your property, the resulting value may deserve a closer look.

The Comparable Properties Are Not Truly Comparable

We also see situations where the properties used to support a value simply are not close enough to the subject property.

A renovated retail center with national tenants may not tell you much about the value of an older center with local tenants and several vacancies.

The same applies to industrial buildings, hotels, offices, and multifamily properties.

A strong commercial property tax protest looks beyond surface-level similarities and asks whether the comparison actually makes sense.

Important Property Details May Be Missing

The assessor may have limited visibility into what is happening inside your building.

Issues such as deferred maintenance, outdated systems, structural concerns, unusual lease restrictions, or major capital needs can all influence value.

Documenting those conditions can help create a more complete picture of the property.

What Is Business Personal Property Tax?

Commercial property owners and business operators may also encounter business personal property tax, commonly called BPP.

This is separate from the real estate itself.

Depending on the state and local jurisdiction, business personal property can include movable assets used to operate a business, such as:

• Machinery
• Manufacturing equipment
• Office furniture
• Computers
• Tools
• Fixtures
• Point-of-sale equipment
• Leased equipment
• Supplies
• Inventory in some jurisdictions

The rules vary significantly by location, which is why it is important to understand what your local taxing authority considers taxable.

Why Business Personal Property Values Deserve a Review

Many business owners focus on the property assessment and give much less attention to their BPP account.

That can be costly.

A business personal property tax assessment may include equipment you no longer own, incorrect purchase costs, assets assigned to the wrong location, or depreciation that does not reasonably reflect the property’s age and condition.

Businesses should compare the assessor’s records against their own current asset schedule.

Helpful records can include:

• Fixed asset lists
• Purchase invoices
• Disposal records
• Depreciation schedules
• Equipment photographs
• Documentation showing obsolete or unusable assets

Can Business Personal Property Tax Be Appealed?

In many jurisdictions, yes.

The exact deadline and procedure depend on where the business is located, but BPP assessments can generally be reviewed and challenged when the reported or assessed value appears incorrect.

This is an area many owners overlook simply because they do not realize the assessment can be challenged.

How the Commercial Property Tax Appeal Process Works

The exact process varies by county and state, but most commercial property tax appeal cases follow a similar path.

1. Review the Assessment

Start with the value itself.

Look at what changed from the prior year and whether the assessment appears consistent with the property’s current condition, income, occupancy, and market.

2. Look at the Assumptions Behind the Value

For an income-producing property, this may mean reviewing:

• Rent
• Vacancy
• Operating expenses
• NOI
• Cap rate
• Comparable properties

Sometimes the issue becomes much clearer once those numbers are compared with the property’s actual performance.

3. File the Appeal on Time

Commercial property tax deadlines vary considerably by jurisdiction.

Some appeal windows are short, so it is important to review the assessment soon after receiving it and confirm the filing deadline with the local taxing authority.

ICON’s property tax appeal guides can also help you understand deadlines and procedures in many of the markets we serve.

4. Prepare the Evidence

This is where commercial appeals often require more work than residential cases.

The appeal should clearly explain why the requested value is supported by the property’s financial information and relevant market evidence.

5. Present the Case

Depending on the jurisdiction, the appeal may involve an informal review, a formal hearing, an appeals board, an appraisal review board, or another local process.

If the first stage does not resolve the dispute, additional appeal options may also be available.

What Evidence Can Strengthen Your Appeal?

There is no universal evidence package for every commercial property.

A half-empty office building requires a different argument from a fully leased industrial property with significant deferred maintenance.

Common evidence includes:

Evidence	What It Helps Show
Rent rolls	Actual rents, tenant mix, and occupancy
Income and expense statements	The property’s real operating performance
Vacancy records	Whether occupancy assumptions are realistic
Comparable sales	What similar properties are selling for
Independent appraisals	An outside opinion of market value
Leases	Actual rent terms, concessions, and restrictions
Repair estimates	Costs associated with property condition
Photos	Deferred maintenance and physical issues
BPP schedules	Which business assets are actually owned and in use

The goal is not to overwhelm the reviewer with documents. It is to provide the information that most clearly explains why the current value should be reconsidered.

How Commercial Appeals Differ From Residential Appeals

Residential appeals often focus heavily on recent sales of similar homes.

Commercial properties can involve many more moving parts.

For an office, retail, industrial, multifamily, or hospitality property, the analysis may need to consider:

• Income
• Expenses
• Vacancy
• Lease terms
• Cap rates
• Comparable sales
• Property condition
• Depreciation
• Business personal property

That does not mean every commercial appeal has to be complicated.

It does mean the strategy should reflect how buyers and investors actually look at that type of property.

If you own a retail center, for example, your tenant mix and leases may matter significantly. For a hotel, occupancy and operating performance may be central to the analysis. A manufacturing property may involve both the real estate assessment and a substantial business personal property tax account.

The right appeal starts with understanding what actually drives value for the property in question.

When Does It Make Sense to Hire a Professional?

Some owners are comfortable handling a straightforward appeal themselves.

If the assessor has the wrong square footage or includes equipment you sold years ago, the issue may be relatively easy to document.

Professional help becomes more valuable when the answer is less obvious.

You may want specialist support when:

• The property generates significant rental income.
• Vacancy has changed substantially.
• The assessor’s income assumptions do not match actual performance.
• Cap rate selection could materially affect value.
• Comparable properties require careful adjustments.
• The property has major condition issues.
• You own multiple commercial properties.
• The BPP account includes significant equipment or machinery.
• A meaningful commercial property tax reduction could have a noticeable impact on operating costs.

For commercial owners, the ROI can be significant because an assessment affects an ongoing expense.

A $500,000 or $1 million difference in value means something very different for a commercial property than a small factual correction on a residential assessment.

This is where ICON’s commercial property tax specialists can help.

Instead of asking owners to determine which valuation method matters, find the right market data, and build the appeal themselves, ICON reviews the property and identifies the evidence most relevant to the case.

That may mean looking closely at income and expenses, comparing similar properties, evaluating cap rates, reviewing BPP records, or bringing several of those pieces together.

If you are weighing whether professional representation makes sense, learn more about how property tax reduction services can help property owners review assessments, develop evidence, and manage the appeal process.

The goal is straightforward: understand what the property is actually worth and determine whether the assessment is supported by the evidence.

Get Help With Your Commercial Property Tax Appeal

You know your property better than anyone. You know when a tenant leaves, when repairs are being deferred, when rents are under pressure, or when a piece of equipment has been taken out of service.

Those details matter. If the assessment does not reflect the property you actually own or the market you are operating in, a commercial property tax appeal may be worth exploring.

ICON’s commercial specialists review real estate and business personal property tax assessments with the individual property in mind. We look at the income, market data, property characteristics, comparable properties, and other evidence that can help determine whether the value is supportable.

If there is a case for a commercial property tax reduction, our team can help build the argument and guide the appeal through the local process.

Learn more about ICON’s commercial property tax appeal services and have your assessment reviewed to see whether an appeal may make sense for your property.