An appraisal estimates a home’s market value for a lender. An inspection checks the physical condition of the house for safety and repair problems. A tax assessment is a local government’s value estimate used to calculate your property tax bill. Three different parties want three different answers, and when the number comes back wrong, each one has its own fix.
That last part is where most explanations stop short. Knowing that an appraiser values and an inspector inspects doesn’t help much at 9 p.m. when your appraisal came in $18,000 under contract price. So the table below covers who controls each process and what your recourse actually is.
Appraisal, inspection, and assessment at a glance
| Home appraisal | Home inspection | Tax assessment | |
|---|---|---|---|
| Question it answers | What is this property worth on the open market? | What is broken, unsafe, or near the end of its life? | What value should this property be taxed on? |
| Who orders it | The mortgage lender, usually through an appraisal management company | The buyer (occasionally the seller, before listing) | Nobody orders it; the county or municipal assessor does it on a schedule |
| Who pays | The buyer, or the homeowner in a refinance | The buyer, outside of closing costs | Not billed separately; it drives your annual tax bill |
| Typical US cost, 2025 data | $357 average, most between $314 and $423 | $343 average, most between $296 and $424 | No direct fee |
| Who performs it | A state-licensed or certified appraiser | A home inspector, licensed in some states and unregulated in others | A government assessor using mass-appraisal models |
| Required? | Yes, for nearly all mortgage loans | No, but standard practice as a contract contingency | Automatic |
| If you disagree | Request a reconsideration of value through the lender | Renegotiate, request repairs or credits, or exit under the inspection contingency | File a formal appeal with the assessor or board of equalization by a hard deadline |
The cost figures come from Angi’s 2025 contractor survey, reported by Bankrate for appraisals, and from HomeAdvisor’s home inspection cost data for inspections. Both are national averages for standard single-family homes; complex properties break the range badly, and <cite index="6-3">VA loan appraisals run between $550 and $1,500, averaging $732 according to Zillow</cite>.
What a home appraisal actually measures
An appraisal is an opinion of market value, written by a licensed professional, that the lender uses to confirm the property is worth enough to secure the loan. The appraiser walks the home, measures it, notes condition and upgrades, then anchors the value to recent sales of comparable properties nearby. Condition matters only to the extent it moves the value; a 15-year-old water heater is a line in an inspection report, not usually a deduction on an appraisal.
The critical structural fact: you may pay for the appraisal, but you are not the client. <cite index="5-5">The appraisal is typically ordered by the lender and paid for by the homebuyer, or by the refinancing homeowner</cite>. <cite index="4-5">The lender, not the buyer or seller, selects the appraiser, often through an appraisal management company, specifically to keep the valuation independent.</cite> You cannot shop for a friendlier appraiser.
Appraisers are credentialed at the state level under federal minimum standards. Maryland, for example, requires <cite index="36-4">150 hours of approved coursework before an applicant can even sit for the Licensed Real Estate Appraiser exam</cite>, per the state’s licensing commission. Home inspectors are a different story, covered below.
When the appraisal comes in low
Four paths exist, and they are not equally available. You can renegotiate the price with the seller, cover the gap in cash, walk away if your contract has an appraisal contingency, or challenge the appraisal itself through a reconsideration of value.
That last one became far more standardized recently. <cite index="18-3">A reconsideration of value is a request to the appraiser to re-examine the appraised value based on possible reporting deficiencies, poorly chosen comparable sales, or additional information the appraiser should consider</cite>, as FHFA describes it. Since the Fannie Mae and Freddie Mac policies took effect for applications dated on or after October 31, 2024, <cite index="21-1,21-5">lenders must have written procedures for a borrower-initiated ROV and must give the borrower a disclosure explaining the process when the appraisal report is delivered</cite> under the Fannie Mae Selling Guide. Practically, that means an ROV is a documented request with evidence attached, usually better comparable sales, not a phone call complaining about the number. Lenders generally allow one borrower-initiated ROV per appraisal.
What a home inspection checks and who it protects
An inspection is a condition report for you, the buyer. The inspector examines the roof, foundation and visible structure, electrical system, plumbing, HVAC, water heater, drainage, and the parts of the house you would never think to look at during a 20-minute showing. Nothing in the report is a value estimate. A house can appraise at full contract price and still have an inspection report full of expensive problems.
No lender requires a general home inspection. <cite index="12-7">Even VA loans don’t require one</cite>, notes Rocket Mortgage, though the FHA appraisal does include a minimum-property-standards check that people frequently mistake for an inspection. It isn’t one, and it isn’t performed for your benefit.
Licensing is the sharpest contrast with appraisers. <cite index="37-1,37-2,37-3">Home inspector qualifications vary state to state: some states license inspectors, others don’t, and renewal rules differ among those that do.</cite> Maryland licenses both professions through the same commission, but plenty of states leave inspection unregulated, which is why credentials from bodies like ASHI or InterNACHI carry weight in those markets.
A bad report opens the same negotiation menu every time: ask the seller to make repairs before closing, ask for a credit or price reduction instead, accept the house as-is, or cancel under the inspection contingency. Which of those you can do depends entirely on how your contingency is written, including how many days you have and whether the exit is unconditional. Read that clause before you order the inspection, not after you read the report.
What a tax assessment is and how it differs from both
A tax assessment is produced by a government assessor to distribute the property tax burden, not to price your home for sale. Assessors value thousands of properties at once using mass-appraisal models fed by square footage, lot size, age, and sales data. No one visits your kitchen.
Two mechanisms make assessed value diverge from market value, and both are by design. The first is the assessment ratio. New York City’s rules are a clean example: <cite index="35-1,35-2,35-3,35-4">the assessed value is a percentage of market value known as the level of assessment, and for tax class 1 properties, which include most one- to three-family homes, that ratio is 6%</cite>, according to the NYC Department of Finance. A ratio that low means the assessed figure on your notice will look nothing like a listing price.
The second is timing. Reassessment cycles range from annual to once a decade depending on the state, so in a fast-rising market the assessed value simply lags. Caps compound the gap: California’s Proposition 13 limits annual increases in assessed value to 2% until the property changes hands, which is why long-time owners can carry assessed values a fraction of current market value.
The correction worth making: an assessment is not a substitute for an appraisal, in either direction. A lender will not accept your tax assessment as evidence of value for a mortgage, and an assessor will not lower your taxes because Zillow says something different. They are separate documents produced by separate parties under separate rules.
How an assessment appeal actually works
You appeal to the government, on a schedule the government sets, and the deadline is unforgiving. In Georgia, Fulton County explains that <cite index="47-3,47-4,47-5">owners file within 45 days of the postmark on the assessment notice, the board of tax assessors reviews it first, and only a "no change" decision pushes the case to the board of equalization</cite>. In California, <cite index="50-1">lien-date appeals run from July 2 to either September 15 or November 30 depending on the county</cite>, per the California State Board of Equalization, which also specifies the application form. Washington counties commonly use a 30-to-60-day window tied to the mailing date of the valuation notice.
Miss the window and you generally wait a full year. Note also that a successful appeal usually reduces one assessment year, not all future years, since properties get revalued on the normal cycle regardless. Property tax rules are intensely local; a local tax professional or attorney can tell you how your jurisdiction handles evidence and hearings.
Which one applies to your situation
Buying with a mortgage. You will get an appraisal whether you want one or not, because the lender requires it, and you will pay for it. The inspection is your choice and your protection, ordered separately, usually within a tight contingency window early in escrow. The tax assessment is irrelevant until after closing, when a sale may itself trigger a reassessment in some jurisdictions.
Refinancing. A new appraisal is standard, and this time you are both the payer and the borrower whose loan-to-value depends on the result. Some loans qualify for an appraisal waiver based on automated valuation data. An inspection is optional and has no bearing on the loan. Your assessment is unaffected by a refinance in most places, since no ownership transfer occurs.
Disputing a property tax bill. Only the assessment matters, and the only venue is the assessor’s office and then the appeals board. A private appraisal can still be useful here, not as the operative number but as evidence: an independent opinion of market value is often the strongest exhibit you can bring to a hearing arguing that the assessed value sits too high.
Estate settlement or divorce. An independent appraisal, hired directly by you or ordered by a court, is the standard basis for legal valuation, and it is one of the few situations where the homeowner is genuinely the appraiser’s client. Assessed value is not accepted as proof of fair market value in these proceedings, and an inspection is optional unless condition itself is disputed.
One practical rule cuts through most confusion: identify who ordered the report, and you immediately know whose interests it serves and where your leverage lies. If the lender ordered it, your remedy runs through the lender. If you ordered it, your remedy runs through the purchase contract. If the government ordered it, your remedy runs through a filing deadline you probably haven’t checked yet.