The Inventory Era.

The single most important fact in the Fairfield County market today is not the price level — it is the scarcity of transactions. Since 2019, the number of homes changing hands each year has fallen 17–41% depending on town.

Indexed to 2019, the contraction is unmistakable and town-wide.

Why: the rate-lock effect

A homeowner who refinanced at 3% in 2020–21 faces a powerful disincentive to sell — trading into a 7% loan can raise the monthly payment on an equivalent home by 50% or more. The move-up market freezes, inventory never reaches the MLS, and the homes that do list attract competitive bids. This is the mechanism behind "fewer sales, higher prices."

Fewer transactions doesn't mean less money. Because prices rose, total dollar volume has held up — and in Greenwich it remains enormous: $1.5B–$3.1B in residential sales per year. The Greenwich market is roughly 2.5× the size of Fairfield's by dollars transacted.

Are Greenwich and Westport simply more expensive towns, or do they command a premium beyond what the homes themselves justify? A hedonic regression across the full 2001–2023 series (48,855 sales), controlling for assessed value, type, and year, answers it.

Both Westport (+12.4%) and Greenwich (+12.9%) carry a persistent residual premium. Crucially, it is invisible in any single recent year, because town assessments lag market peaks by 18–36 months. That lag is itself an opportunity: in the window after a peak but before reassessment, well-timed buyers can find relative value.

Roughly 10,800 of the recorded sales carry precise coordinates, which lets us map price to place. Plotted at their true locations and colored by price, the sales trace the towns' actual footprints — and reveal where value concentrates.

Smoothed into a heat surface, the pattern sharpens: gold ridges along select shore stretches and — strikingly — deep inside Greenwich.

That inland glow upends the usual "waterfront is dearest" assumption. Measuring price against distance from each town's own shoreline separates the coast effect from the town tier — and reveals two different geographies of value.

Total price tells you what a home cost; price per square foot tells you what the market paid for the real estate itself. Pairing each sale with the assessor's living-area figure — newly joined for ~50,000 parcels — gives us the metric agents actually quote.

The more revealing view is the trajectory. For nearly two decades, $/sqft was remarkably flat — Fairfield held ~$280–310 from 2002 to 2019. Then it broke out.

Normalizing for home size also rewrites the map. The total-price heat surface lit up Greenwich's big-lot interior; the per-foot surface moves the gold back to the water — a small coastal cottage commands more per square foot than an inland estate.

A single median hides as much as it reveals. Zoom into Fairfield alone — 5,160 recorded sales since 2018 — and the town stops looking like one market and starts looking like several, stacked on top of each other. The first clue is the shape of the distribution.

Home prices are never a tidy bell curve; they are log-normal — squeezed against zero on the left, stretched into a long tail on the right. Most of Fairfield clusters near the $660K median, but a thin band of high-end sales pulls the average up to $865K. That gap between median and mean is the whole story in one number: about 1 in 18 sales (5.6%) clears $2M, and those few do the heavy lifting on the average.

Measured per square foot, the spread tightens. Total price mixes together how nice and how big; price per square foot isolates the rate. Half of Fairfield trades between $263 and $434 a foot, around a $337 median — a far narrower band than the price chart suggests.

So where does the tail come from? Geography. Split the town by where homes actually sit and the single lopsided curve resolves into three cleaner ones — three Fairfields with three different centers of gravity.

Sharpen the lens further and Fairfield resolves into six recognizable neighborhoods, each with its own price signature. Placed on the map, the logic is geographic: the south and west sit on Long Island Sound, while Greenfield Hill is the inland estate belt to the northwest.

Ranked by median price, the top of the table holds a quiet surprise. Southport & Sasco Hill ($870K median) and Greenfield Hill ($865K) sit within $5K of each other — yet they are nothing alike. The spread is the tell.