Property values

Why the online estimate on your house is wrong

Three different numbers claim to tell you what your home is worth, and they disagree with each other on purpose. Knowing which one matters, and when, is most of what separates a smooth sale from a listing that sits.

Every seller starts the same way. They look up their address online, see a number, and anchor to it. Sometimes that number is close. Often it is not, and the direction it misses in tells you something useful about the house.

Here is what is actually going on.

Three numbers, three jobs

WhatWho makes itWhat it decides
AVM
Automated valuation model
An algorithm, from public records and past sales. No human, no visit Nothing official. It is a starting point and a marketing tool
Appraisal A licensed appraiser who walks the property, ordered by the lender Whether the loan funds. This is the number with legal teeth
CMA
Comparative market analysis
Your agent, from comparable sales plus condition and local knowledge Your list price and your negotiating position
Assessed value The Clark County Assessor, on its own schedule Your property tax bill. Nothing else

That last row deserves emphasis, because it costs people money every year. Assessed value is not market value. It is calculated for taxation using its own methodology and its own timing. Never price a home from it.

Why the automated number misses, specifically here

An AVM is genuinely useful. We use one ourselves, and we will happily run one on your address. But you should understand exactly what it cannot see.

It cannot see condition

This is the big one. The model knows your house is 2,100 square feet, built in 1999, with four bedrooms. It does not know whether the kitchen is original laminate or was rebuilt last year. Two houses on the same street with identical records can be $60,000 apart in reality, and the model will price them within a few thousand dollars of each other.

Repeating floor plans make it worse, not better

Much of this valley was built by production builders using a handful of floor plans per subdivision. That looks like a gift to a valuation model, because comparable sales are plentiful and nearly identical on paper. In practice it means the model becomes more confident right where condition differences are doing all the work.

It cannot see the lot

Backing to a wash, a park, or the 215 are three very different experiences and three different prices. So is a north-facing backyard versus a west-facing one, which in this climate is a genuine comfort and utility-bill difference. Public records do not capture any of it.

It lags turning markets

AVMs are built on closed sales, and a closed sale reflects a contract written 30 to 60 days earlier. When the market moves, the model is looking at the past.

How to read your estimateTreat the AVM as a range, not a number. If the tool gives you a low and high, the width of that range is telling you how confident the model is. A wide range means the comparable sales disagree, which usually means condition or lot differences are driving the street.

What the market looks like right now

Live figures for 89130, the northwest zip our office sits in. These update automatically:

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Median sale price
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Median rent
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Days on market
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Listings tracked

Loading current market data for zip 89130.

A median is the middle of a set. It is not your house. If your home is larger, newer, or in better condition than the middle of the zip, it should price above that line, and the reverse is equally true.

What actually moves value in this valley

Things that reliably matter

Things that matter less than owners expect

When the appraisal comes in low

In a moving market this happens, and it is not the end of the deal. The realistic options are that the buyer brings the difference in cash, the price is renegotiated, the parties split it, or the appraisal is challenged with better comparable sales.

That last one is where an agent who actually knows the neighborhood earns their fee. An appraiser assigned from out of area may not know that the subdivision across the arterial is not truly comparable to yours. Making that case, with data, is a real skill.

The honest recommendation

Start with the automated estimate. It is free, it is instant, and it will get you in the right neighborhood. We will send you one along with the property's tax history and market context.

Then, before you make any decision that involves real money, have someone walk the house. The gap between the algorithm and the actual number is almost always sitting inside your own front door.

This article is general information about property valuation, not an appraisal, a broker price opinion, or a guarantee of sale price. Automated estimates are generated from third-party data and can be materially inaccurate for any individual property. Market figures shown describe a zip code in aggregate and do not describe any particular home. For a valuation you can rely on, consult a licensed appraiser or ask us for a comparative market analysis.

Want the real number?

Get the instant estimate first. Then we will walk the house and price it against comparable sales on your actual street, at no cost and with no obligation.

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