Why No Two Websites Agree on What a McLean Home Is Worth

Pull up three real estate sites for the same McLean zip code and you will get three different answers to what should be a simple question. Redfin's three-month window through May 2026 puts the median sale price near $1.9 million, up 9.7 percent from the same stretch a year earlier. Zillow's home value index, updated at the end of July 2026, has the typical McLean home closer to $1.47 million. Local reporting on the McLean market cited a median crossing $2 million back in October 2025. Same town, overlapping months, three numbers that never land near each other.

That gap is not a glitch. It is a sign that "McLean home price" describes two different products wearing the same label. One is the price of a house. The other is the price of the ground it sits on. In a market where only a few dozen homes close in a typical month, one teardown lot sale or one trophy estate closing can drag a median in a direction that has nothing to do with what an ordinary buyer's dollar actually buys.

The Three Numbers, and Why None of Them Is Lying

Each of these is measuring something real. Redfin's median is a straight midpoint of actual closings, which means a handful of multimillion-dollar teardown-lot sales in a given month can pull it upward fast. Zillow's index is a modeled estimate across a wider set of properties, so it smooths out the same spikes that make the median jump. The October 2025 figure came from a month when a cluster of high-end closings happened to land together, the kind of month that makes a headline but does not describe a typical Tuesday in the market.

None of this means pick the number you like best. It means the question "what does a McLean home cost" only has an answer once you know whether you are asking about a house or a lot. Right now in McLean, those are frequently two different transactions entirely.

What a 25-Acre Time Capsule Just Proved

The clearest evidence of this split sits at the corner of Lewinsville Road and Lancia Drive, where a family held the same 25 acres for more than 60 years. The land belonged to the Jewett family, whose patriarch, Freeborn Garrettson, a former general counsel for the Inter-American Development Bank, died at the home in October 2022 at age 94. The manor house on the property dated to 1875, alongside a swimming pool, stables, and a tennis court that had defined a private compound for generations.

In November 2025, TTR Sotheby's International Realty and Corcoran McEnearney announced what comes next. The site, submitted to Fairfax County for review back in December 2023 and reviewed by county staff by September 2025, is becoming Knolewood, a 24-lot subdivision of custom home sites ranging from 0.82 to 1.2 acres. Three approved builders, Artisan Builders, Galileo Signature, and Winthrop Builders, are handling construction. The old structures on the property have already been demolished, and the first section of new roads was expected to be paved in December 2025, with the second section following in February 2026.

Here is the part that matters for anyone trying to make sense of McLean pricing. Lot 5 at Knolewood, one of the 24 planned home sites, was listed on the market for $2.5 million, with a listing update as recent as April 2026. No house. No finished square footage. Just land inside McLean's boundary, priced within striking distance of the region's median finished home. That is not a coincidence of one unusual project. It is early proof that in McLean, the structure on a lot is often the smaller line item, not the larger one.

That matters directly if you are comparing McLean's median to a neighboring community's median as part of deciding where to put your budget. The two towns may report similar numbers while selling entirely different things: one town's median reflects finished livable space, McLean's increasingly reflects the price of scarce dirt with a house attached almost as an afterthought.

The Permit Sequence Between "Sold" and "Groundbreaking"

If you are eyeing an older McLean home with teardown potential, the path from signed contract to a new foundation runs through Fairfax County's Land Development Services office, and it is longer than a listing photo will ever suggest.

A full teardown requires a residential demolition permit before the existing structure comes down, and a separate residential building permit before the new one goes up. If the home predates 1980, an asbestos inspection has to happen first, with abatement handled under its own permit if anything turns up. Utility disconnection letters from the relevant providers, gas, water, electric, are required before the county will issue the demolition permit at all. If the land disturbance on the project exceeds 2,500 square feet, which is common on anything larger than a modest addition, it can trigger a Resource Protection Area review under the county's environmental rules, adding another layer of approval before dirt moves.

Locally, full house demolitions in Fairfax County typically run in the range of $9,400 to $19,800, depending on the size and complexity of the structure. That is before permit fees, before the new build's own foundation and framing timeline begins. None of this shows up in a listing's photos or its price per square foot. It shows up in the calendar between closing day and the day construction crews actually arrive.

Check the Lot Next Door Before You Fall for the One You're Buying

Here is the practical piece that applies even if you have no interest in tearing anything down yourself. McLean's housing stock skews heavily toward homes built in the 1960s and 1970s, exactly the era of house that a builder looks at and sees a lot rather than a home. That means teardown activity is not confined to one project like Knolewood. It is scattered street by street across older sections of town.

Before you commit to a home, it is worth checking whether a neighboring parcel has an active or pending demolition or building permit filed with Fairfax County. A teardown next door can mean an extended construction period, changed sightlines, and a very different daily experience of the property you just bought, regardless of whether your own home is old or new. The county's permitting records are public, and a quick check before closing costs nothing compared to what a two-year construction project next door can cost in patience.

What This Means for Your Comparison

If you are weighing McLean against another Northern Virginia neighborhood using median price alone, you are likely comparing two different products without realizing it. A neighboring town's median might describe a finished, move-in-ready home. McLean's median increasingly includes bare land trading at prices that would buy a complete house elsewhere. That is not a reason to avoid McLean. It is a reason to ask a more specific question than "what's the median" when you start comparing towns, one that separates what you are actually buying from what the headline number is measuring.

A Few Straight Answers

Does buying an existing McLean home protect me from teardown disruption nearby? Not automatically. Given how much of McLean's older housing stock sits on desirable lots, checking Fairfax County's public permit records for adjacent parcels before you close is a reasonable step regardless of whether the home you are buying is old or new.

How can I tell if a McLean listing is really a land sale? Look at how the listing is framed. If acreage and lot dimensions lead the description rather than finished square footage, and the listing explicitly markets the property as a home site rather than a house, as with the individual Knolewood lots, you are looking at a land transaction wearing a real estate listing's clothes.

If you are trying to figure out what your budget actually buys in McLean versus a neighboring community, that comparison takes more than a portal screenshot. Rachel Knapp works across the DMV corridor and can walk you through what a given price point gets you street by street. Let's Connect.