Broker Opinion of Value for Commercial Property Tax Appeal

A broker opinion of value for a property tax appeal is a licensed broker’s written, market-based valuation used as evidence to challenge an assessor’s overvaluation, typically completed in 2 to 3 business days at a fraction of the cost of a certified appraisal. Property taxes are among the largest recurring operating expenses for commercial real estate owners, and assessors get them wrong more often than most owners realize. If your assessed value exceeds what your property would actually sell for in the current market, you are overpaying taxes every single year. A broker opinion of value gives you a market-grounded, professionally documented alternative value to challenge that assessment, reduce your tax burden, and improve your property’s net operating income.

Commercial property owners who challenge overassessments win a reduction approximately 62% of the time. Successful appeals typically reduce assessed values by 10% to 15%, which on a commercial property can translate to tens of thousands of dollars in annual tax savings every year until the next reassessment cycle. The cost of a BOV is almost always recovered in the first year of a successful appeal.

How Assessors Value Commercial Property and Where They Get It Wrong

Local tax assessors value millions of properties across their jurisdictions using mass appraisal techniques: models, algorithms, and comparable sales databases that apply broad assumptions across property categories. These systems are efficient for assessing large numbers of properties simultaneously, but they are not designed to capture the nuances of individual commercial assets.

• Stale comparable sales. Assessors often rely on comparable sales from assessment cycles that may be one to three years old. If market conditions have shifted since those sales, the assessment may no longer reflect current value. This is particularly common in markets where industrial or office values have declined due to vacancy changes or interest rate impacts.
• Incorrect income assumptions. For income-producing properties, assessors may apply income and expense assumptions that do not reflect your property’s actual performance. If your property has below-market rents, high vacancy, or elevated expenses, your assessed value may be overstated.
• Wrong cap rate. The capitalization rate applied to a property’s income is the single biggest lever in income-approach valuation. An assessor using a cap rate that is 50 to 100 basis points below the market rate for your specific asset type can produce an assessed value that is 15% to 25% higher than actual market value.
• Property-specific factors ignored. Deferred maintenance, functional obsolescence, contamination, lease issues, or other property-specific value impairments are rarely captured in mass appraisal models.
• Lag in recognizing market declines. Office properties in many markets have lost 20% to 40% of their value since 2022. Many assessors have not yet caught up to those declines, leaving owners of functionally impaired office assets with assessments that no longer reflect reality.

How a Broker Opinion of Value Supports a Property Tax Appeal

A property tax appeal is fundamentally an argument that the assessor’s estimate of your property’s fair market value is too high. To make that argument successfully, you need credible, documented evidence of what your property is actually worth. A broker opinion of value from a licensed commercial real estate broker provides exactly that: a written, market-supported valuation prepared by someone who actively buys and sells properties like yours.

A BOV used for a property tax appeal typically includes:

• Comparable sales analysis. Recent sales of properties similar to yours in your submarket, adjusted for size, location, condition, and lease structure. This directly challenges the assessor’s comparable selection.
• Income approach analysis. For income-producing properties, the BOV applies a market-appropriate cap rate to your property’s actual or normalized NOI to produce an income-approach indicated value. If your actual NOI supports a lower value than the assessor assumed, this is the most powerful evidence you can bring to a hearing.
• Market commentary. Current market conditions for your property type and submarket, including cap rate trends, vacancy trends, and recent transaction activity.
• Written professional opinion. A signed, written document from a licensed commercial real estate broker stating a specific value opinion for your property, which can be submitted as evidence in an informal hearing, a board of equalization appeal, or a tax court proceeding.

The Property Tax Appeal Process: What to Expect

Property tax appeal deadlines and procedures vary significantly by state and county. Missing a deadline eliminates your right to appeal that assessment year.

Step 1: Review Your Assessment Notice

When you receive your assessment notice, compare the assessed value to what you believe your property would actually sell for today. If the number seems high relative to recent comparable sales or your property’s current income, it is worth investigating. Also check the assessor’s property record for factual errors: incorrect square footage, wrong property class, improvements that do not exist, or missing vacancy and expense data.

Step 2: Request a Broker Opinion of Value

Before filing an appeal, get a BOV so you know whether you have a case. If the BOV comes in at or near the assessor’s value, an appeal may not be worth pursuing. If the BOV comes in materially below the assessed value, you have the documentation you need to pursue a reduction. Most attorneys recommend getting the BOV before filing so you can decide whether to appeal with evidence rather than hope.

Step 3: File Your Appeal Within the Deadline

Appeal deadlines are strict and vary by state. Common deadlines include April 1 in New Jersey, May 15 in Texas (or 30 days from assessment notice), 25 days from TRIM notice in Florida, and various other state-specific dates. Filing deadlines do not wait for you to gather evidence: file first, then build your case.

Step 4: Informal Hearing with the Assessor

Many jurisdictions offer an informal review step where you present your evidence directly to the assessor’s office before a formal hearing. This is often the fastest path to a reduction: if your BOV and comparable sales clearly support a lower value, the assessor may agree to a reduction without proceeding to a formal board hearing.

Step 5: Formal Board of Equalization Hearing

If the informal review does not resolve the dispute, you present your case to an independent board. This is where your BOV becomes critical evidence. In many states the burden of proof is on you as the property owner to demonstrate overassessment, which is why a professionally prepared BOV with documented comparable sales is essential.

Step 6: Tax Court Appeal if Needed

If the board hearing does not produce the reduction warranted by the evidence, most jurisdictions allow appeal to a tax court. At this stage, a certified appraisal from a licensed MAI appraiser is typically preferable to a BOV for maximum credibility with the court. The BOV is the right tool to evaluate and initiate the appeal; a certified appraisal becomes the right tool if the case proceeds to formal litigation.

Property Types Where Tax Assessment Errors Are Most Common

• Office properties in markets with elevated vacancy, where values have declined 20% to 40% since peak but assessors have not yet caught up to post-pandemic realities
• Retail properties with vacancies, below-market leases, or anchor tenant losses that the mass appraisal model does not capture
• Industrial properties in submarkets where new supply has softened rents and increased vacancy
• Multifamily properties in jurisdictions where recent legislation has depressed values on rent-stabilized assets that assessors continue to value on pre-legislation income assumptions
• Properties with deferred maintenance or functional obsolescence that the assessor’s model treats as fully functional assets
• Vacant properties or properties between tenants where the assessor assumes stabilized occupancy that does not currently exist

Request a BOV for Your Property Tax Appeal

Submit your property details and note your appeal deadline so we can prioritize timing accordingly. A licensed commercial real estate broker who knows your property type and market will review your request and follow up promptly.

 

Frequently Asked Questions

Can a broker opinion of value be used in a property tax appeal hearing?

Yes. A written broker opinion of value from a licensed commercial real estate broker is accepted as evidence in property tax appeal hearings at the informal, board of equalization, and in many cases tax court levels. The BOV presents a market-based alternative to the assessor’s valuation, supported by comparable sales and income analysis. For tax court proceedings where the stakes are high, a USPAP-compliant certified appraisal from a licensed MAI appraiser may carry more formal authority, but a BOV is appropriate and effective for the vast majority of commercial property tax appeal hearings.

How much can a successful commercial property tax appeal save?

Successful commercial property tax appeals typically reduce assessed values by 10% to 15%, though the reduction can be larger when assessments are significantly out of step with current market values. For a commercial property assessed at $5 million with a 2% tax rate, a 15% reduction saves $15,000 per year, every year until the next reassessment. Since most states reassess on one to four year cycles, the cumulative savings from one successful appeal can be substantial. Commercial property owners who challenged their assessments won reductions approximately 62% of the time in documented studies of appeal outcomes.

What is the difference between assessed value and market value for my commercial property?

Market value is what a willing, informed buyer would pay a willing, informed seller for your property in a normal market transaction. Assessed value is the figure your local government assigns to your property for tax calculation purposes, which is supposed to equal market value but frequently does not. Assessed values lag behind market changes, miss property-specific value factors, and apply broad assumptions that do not fit individual assets. A broker opinion of value establishes your property’s current market value based on actual comparable sales and income analysis, giving you a documented basis to challenge an assessed value that does not reflect market reality.

How do I know if my commercial property is overassessed?

The simplest check is to compare your assessed value to what you believe your property would sell for today. If the assessed value seems high relative to recent comparable sales in your area, or if your property’s current NOI at a market cap rate produces a value significantly below the assessed value, it is worth investigating. Request a BOV before filing your appeal so you have a documented market-based value to compare against the assessment. If the BOV comes in materially below the assessed value, you have a case worth pursuing.

Do I need an attorney to file a commercial property tax appeal?

For informal and board-level hearings in most jurisdictions, you can represent yourself or use a property tax consultant. For tax court appeals in most states, an attorney is required if the property is owned by a corporation, LLC, REIT, or trust. Even for hearings where representation is not legally required, an attorney or property tax consultant who knows the local appeals board and procedures can improve your chances of success.