A buyer relocating for a corporate role in Austin this summer pulled up two market snapshots for Westlake on the same afternoon. One said the median home sold for a little over $2 million. The other said $5.1 million. Both were dated 2026. Neither was wrong.
That gap is not a typo or a stale report. It is the whole story of how price gets reported in this particular nine-square-mile stretch of West Austin, and understanding why the number moves that much matters more than knowing any single version of it.
Same Nine Square Miles, Different Number Every Time
Pull five market reports on Westlake published in 2026 and you will find five different medians, often for overlapping months.
| What's actually being measured | Time window | Reported median |
|---|---|---|
| Homes tagged to Westlake's city boundary | 3 months ending May 2026 | $5.1M |
| All sales across the broader 78746 ZIP code | Q2 2026 | $3.2M |
| Same 78746 ZIP, a full trailing year | through July 2026 | $2.04M |
| Westlake Hills proper, priced correctly | early 2026 | roughly $2.2M |
| Westlake Hills only, a separate dataset | reported April 2026 | $3.5M to $3.6M |
None of these figures are describing the same thing. One counts every sale inside the 78746 ZIP, which stretches well past Westlake Hills into Rollingwood, Rob Roy, Lost Creek, and Davenport Ranch. Another counts only homes inside the incorporated city limits of West Lake Hills itself. A third is a three-month snapshot from a market where only a handful of homes close in any given window, which means one $10 million sale can move the median by six figures on its own.
The lesson is not that one of these numbers is the real one. It is that the label "Westlake" gets applied to at least four different boundaries, and the reporter's choice of boundary decides the headline more than the market does.
A City Inside A ZIP Code
Here is the fact that explains most of the confusion. West Lake Hills is not a subdivision name or a marketing tag. It is an incorporated city, established in 1953, with its own mayor, city council, and police department, sitting entirely inside Travis County but governed on its own terms. As of the 2020 census it had 3,444 residents.
Rollingwood, its neighbor, is also its own incorporated city. Both share the 78746 ZIP code with Rob Roy, Lost Creek, and Davenport Ranch, none of which are cities in their own right. They are simply neighborhoods inside the same ZIP, sold under the same "Westlake" heading in casual conversation.
So when a report says "the Westlake median is $3.2 million," it may mean every one of those enclaves combined. When another says "$2.2 million," it may mean only the incorporated city itself. Anyone comparing the two is comparing apples grown in the same orchard but picked from different trees.
Why Thin Volume Makes This Worse
Boundary confusion is compounded by a second, quieter problem: not many homes sell here in any given month. In January 2026, the entire 78746 ZIP recorded just eight sales, with a median of $1,895,000. Eight closings is a small enough sample that a single high-dollar deal or a single distressed sale can swing the reported median by hundreds of thousands of dollars in either direction. One market analysis covering Rollingwood specifically made the same point directly: low sales volume means any single transaction can skew the entire dataset.
Supply tells the same story from the other side. Westlake carried about 5.1 months of housing supply at the start of 2026, and one active count for 78746 put total active listings at only around 42 homes at any given time. When the denominator is that small, medians swing hard between reports even without any real shift in what homes are worth.
The Sales That Never Reach A Median At All
There is a third layer that most published medians miss entirely. A meaningful share of Austin's highest-end inventory never appears in a public listing. One industry estimate puts the value of off-MLS luxury inventory across the Austin area at roughly $1.2 billion, homes that are available for sale but shared privately between agents rather than published on public portals. The same analysis calls out Westlake Hills and Rollingwood specifically as places where sellers above the $3 million mark often prefer to test the market quietly first, through direct agent relationships, before ever considering a public listing.
If a sale like that closes, the terms and sometimes the sale itself never reach the public record in a way that feeds a median calculation. That means every published Westlake median, no matter which boundary it uses, is built from the sales that happened to go public and is silent on the ones that did not.
The Same Blur Shows Up In Your Tax Bill And Your School Zone
The boundary problem is not limited to price. Effective property tax rates quoted for 78746 range from about 1.27 percent up to 2.1 percent of assessed value in different reports, and the spread traces back to the same cause. West Lake Hills, as its own incorporated city, layers a municipal tax rate on top of the county and school district bill. Neighborhoods elsewhere in the ZIP that fall outside its city limits do not carry that extra layer, which pulls a ZIP-wide average down even though homes inside West Lake Hills itself are paying more.
School zoning carries the identical warning. Eanes ISD, which serves about 7,400 students across seven campuses and was ranked the top school district in Texas for 2026, does not follow a simple map. Its elementary feeders, Barton Creek, Bridge Point, Cedar Creek, Eanes, and Forest Trail, are assigned by street rather than by ZIP code or subdivision name, and some streets within the broader 78746 area fall to Austin ISD instead. A home marketed as "Westlake" does not automatically carry Eanes zoning, and confirming the actual line before writing an offer takes a call to the district, not a glance at the listing description.
What This Actually Means When You're Comparing A Specific Home
Before treating any Westlake price figure as a benchmark, it helps to ask a short set of questions about it.
- Which boundary is this number using: the incorporated city, the full ZIP code, or a single MLS neighborhood tag?
- What time window does it cover, and how many total sales fed that median?
- Does the property tax figure quoted include a municipal layer, or only county and school district levies?
- Has the school zoning been confirmed street by street, rather than assumed from the ZIP code?
None of these questions have a universal answer. They have an answer specific to the address in front of you, which is the entire point.
A Few Questions Worth Asking Directly
Is Westlake still favoring sellers in 2026? Supply sits around five months, which is tighter than much of the Austin metro, but reports on days on market for correctly priced homes here range from the low twenties up past 80, depending again on which boundary and which window is being measured. A well-priced home in the right pocket still moves quickly. An overpriced one sits, regardless of the address.
How do I find out if a specific home is actually zoned to Eanes ISD? Street-level verification through the district directly is the only reliable method, since boundary lines inside 78746 do not always match ZIP code or subdivision expectations.
The number that matters is never the headline median. It is the one built from the right boundary, the right window, and the full set of comparable sales, public and private, for the specific pocket a buyer or seller is actually standing in. That is the kind of read that takes local familiarity with West Lake Hills, Rollingwood, and the enclaves around them rather than a single market report.
If you are trying to make sense of a specific Westlake address, including what its true comparables are and whether private inventory exists that never made the public data, The Weiss Group can walk through the actual numbers behind it.
