A seller in Brentwood and a buyer in Nolensville can read the same headline this month, see the same $992,000 county median, and both walk away with the wrong plan. The single number that most portals lead with is an average of averages, and in Williamson County right now that math conceals a split that matters more to your transaction than any headline stat. As of the week ending June 20, 2026, the $500,000 to $699,000 band was sitting at roughly 2.1 months of supply while the $6 million to $6.99 million band was sitting at 17.3 months, with an average of 200 days on market. Same county, same week, opposite realities.
The practical thesis of this piece is simple. Williamson County is not one market with one median. It is at least three markets running side by side, and the friction that catches sellers off guard, especially the 90-day cliff described below, only makes sense once you sort your address into the right one.
The number the median is really hiding
Countywide, the trailing three months ending May 2026 produced a $992,000 median sale price at $333 per square foot, with homes averaging 56 days on market. Countywide months of supply sat at 4.37 as of late June, up 8.4 percent year over year, according to weekly RealTracs MLS tracking by the Turner Victory Team. On paper that reads as a mildly balanced market.
It isn't. Active listings have climbed eight straight weeks from 1,491 at the end of April to 1,695 by June 20, a 13.7 percent jump in under two months and roughly 100 listings above the previous four-year peak. Most of that new inventory is concentrated at the top. Below $700,000, homes are still moving on the first weekend. Above $2 million, they are stacking up.
That is the split every buyer and seller in Williamson County needs to translate before they price, offer, or list.
Three markets, sorted by price
| Price band | Months of supply (June 20, 2026) | What it means for you |
|---|---|---|
| $500K – $699K | 2.1 – 2.6 | Clear seller's market. Nearly 40 percent of county homes go under contract in the first week. |
| $700K – $1.4M | Roughly balanced, new-construction incentives set the ceiling | Resale sellers compete directly with builder rate buydowns and closing credits. |
| $1.4M – $2M | Longer timelines, larger concessions | Precise day-one pricing matters more than in any other tier. |
| $2M – $3M | 6+ months | Buyer's market. |
| $3M+ | 11+ months | Deep buyer's market. |
| $6M – $6.99M | 17.3 months, 200 avg DOM | Bespoke market with almost no comparable comps. |
The county Market Health Score sat at 49 for the week of June 20, a slight lean toward buyers on average. Average is doing all the work in that sentence.
Where new construction quietly resets the price
New construction represented 26 percent of active Williamson County inventory and 20 percent of pending contracts in mid-June 2026. That mix is why the mid-tier feels different from the extremes. Builders in Nolensville, Thompson's Station, and Spring Hill can offer rate buydowns and closing cost credits that a resale seller down the road cannot match dollar for dollar. If you are listing a resale home in the $700,000 to $1.3 million band, you are not pricing against last year's comps. You are pricing against a builder holding an incentive stack.
The named subdivisions doing that work are worth knowing by name. In Thompson's Station, Bridgemore Village trades in the $840,000 to $1.77 million range with all-brick or brick-and-stone construction on larger lots. Fairhaven in Thompson's Station recently produced fifteen sales ranging from $880,000 to $1.79 million with a median of $1.33 million. Fairington in Nolensville logged nine sales between $850,000 and $1.15 million with a median just over $1 million. Whistle Stop Farms and Starnes Creek Estates are still delivering new phases. In Franklin, June Lake and Stephen's Valley continue to add larger custom product. That builder pipeline is the mechanism holding Williamson County's median where it is even as the top end softens.
Franklin closed 978 homes over the trailing six months at a $949,995 median and $345 per square foot. Brentwood, over the same window, cleared a $1,320,000 median at nearly identical $346 per square foot. The per-foot number is the tell. Brentwood is not more expensive because it is finer real estate on a unit basis. It is more expensive because the houses are larger and the lots deeper, closer to Nashville. When people say "Brentwood costs more than Franklin," what they usually mean is "Brentwood houses are bigger."
The 90-day cliff every seller should price around
This is the friction that surprises sellers most, and the one that changes how a Williamson County listing should be priced from day one. As of the week ending June 20, 2026, 442 homes in the county, roughly 26 percent of active inventory, had sat 90 days or more without going under contract. Of homes that reach that 90-day mark, Tru Insights data shows 66 percent never sell under that MLS number. Of that 66 percent, roughly 13 percent eventually resell under a new MLS number and 52 percent never sell at all.
Once a listing crosses 90 days, generating fresh buyer interest becomes significantly harder even after a price reduction. Most of these homes missed on price, presentation, or both at launch.
The strategic implication is direct. In this market, the aspirational number that tests the ceiling is expensive. A home priced 5 percent above where it should be does not sell for 5 percent less six months from now. It very often does not sell at that address at all. Pricing at the market on week one is not a concession. It is the offensive move.
The estate tier: a different game entirely
Above $2 million, Williamson County shifts into a market that has more in common with private aviation than with a Nolensville new-build queue. Months of supply exceeds 6 months above $2 million, exceeds 11 months above $3 million, and reaches 17.3 months in the $6 million to $6.99 million band with a Tru DOM average of 200 days. Franklin's 37069 corridor and the gated luxury communities such as Governors Club, Annandale, and Laurelbrooke each trade in their own microclimates where a single comparable sale can move the needle for a full year.
Two things follow from that. First, buyers at this tier currently hold more negotiating leverage than they have in several years, and pre-approval or proof of funds moves an offer to the top of a short list even when there is no bidding pressure. Second, sellers cannot borrow last year's comps and expect them to hold. Franklin single-family overall flipped to a buyer's market as of mid-July 2026 at approximately 8.1 months of supply and a 99.1 percent sale-to-list ratio on trailing six-month closings, per Grant Hammond's market engine using RealTracs data. The sale-to-list looks healthy because the well-priced homes trade near ask. The homes that don't never make the average at all.
What this means before you list or write an offer
- Sort your address into the right band before you decide anything. A $650,000 Nolensville resale and a $2.4 million Franklin estate are not in the same market and should not use the same playbook.
- If you are selling in the $700,000 to $1.3 million band, walk the nearest builder's model home the same week you set your list price. The incentive package they are running is your competition.
- If you are buying above $2 million, negotiate on inspection, closing timeline, and rate buydown credits, not only on price. Sellers at this tier are open to structure in ways they were not two years ago.
- If you are selling anywhere in the county, price to sell in the first three weeks. The 90-day cliff is not a soft number.
FAQ
Is Williamson County a buyer's market or a seller's market right now? Both, at the same time. The county-wide Market Health Score sat at 49 for the week ending June 20, 2026, a slight lean toward buyers, but that number is an average across bands that behave very differently.
How much does the Williamson County Schools zone actually affect price? It shows up most cleanly in the Spring Hill and Thompson's Station corridor, where the Williamson-Maury county line runs through neighborhoods and is not marked on the street. Identical homes on the same street can differ by roughly $40,000 to $80,000 depending on which school district they zone into.
Does new construction pull the median up or down? Both, again. New builds add larger, higher-priced inventory that lifts the median in absolute terms, and the incentives attached to them pull resale pricing down at the same price point.
What is the property tax rate in Williamson County? The county rate for the 2025 to 2026 tax year sits at roughly $1.30 per $100 of assessed value, with municipal rates layered on top depending on the city.
If you are weighing a Williamson County move or thinking about listing, the number that matters is not the county median. It is what your specific price band is doing this month, and how your address competes with the builder two exits south. Janelle Waggener works with buyers and sellers across Brentwood, Franklin, Nolensville, and Thompson's Station on exactly that translation. Let's connect and start your Brentwood search.