PITTSFIELD — A small number of high-end home sales reshaped Berkshire County’s housing market in 2025, pushing prices sharply upward in some towns while dragging averages down in others.

Sandisfield posted the largest increase, with its average home sale price more than doubling to nearly $970,000, according to new data from the Berkshire County Board of Realtors. Countywide, average prices rose 4 percent, even as half of municipalities saw declines.

With a year-round population of about 900, Sandisfield recorded a 114 percent increase in its average home sale price from 2024.

Berkshire County's housing market split evenly in 2025, with exactly 16 towns seeing their average home sale price increase and 16 seeing decreases. While most municipalities had moderate changes, some, like Sandisfield, saw their prices jump or fall by hundreds of thousands of dollars.

The county as a whole saw increases in the average home sale price, number of homes sold and the total dollar amount in sales. According to the data, 90 homes sold for more than $1 million, making up 7 percent of all sales in the county.

Sandisfield's large increase is owed to a few pricey home sales, with the most expensive sale being a $3.4 million home at 14 Sullivan Road. Including that sale, four out of Sandisfield's 12 home sales eclipsed the seven-figure mark.

The home at 14 Sullivan Road in Sandisfield was the fourth most expensive home sold in the county, selling for $3.4 million. It overlooks Atwater Pond and helped raise Sandisfield's average home sale price by more than $500,000.

Egremont, with a year-round population of just over 1,300, also saw large increases in its average home sale price, increasing from just over $990,000 in 2024 to $1.443 million in 2025 — a 46 percent jump. There were 24 homes sold in the town, which is four more than last year.

Berkshire County's most expensive real estate sale in 2025 was in Egremont — a home at 53 White Hill Road was sold for $5.6 million.

Lanesborough and Hinsdale were the two other municipalities to see their average home sale price increase at least 20 percent.

New Marlborough was the only other town to have an increase of at least $100,000 in the average home sale price.

Monterey, Mount Washington, New Ashford and Alford saw their respective average home sale price drop over $100,000 in 2025.

Monterey saw the single largest drop in average home sale price. In 2024, the town's average home sale price was $1.441 million, but in 2025 it is $938,955. Twelve homes were sold in Monterey last year, seven fewer than the year before.

In 2025, the average home sale price in Berkshire County increased by about $18,000, or 4 percent, from 2024. Now homes in the county are selling for, on average, just under $500,000.

By contrast, Pittsfield saw its average home sale price increase by just over $23,000. In 2025 homes in the city, on average, were sold for $356,703, and there were a total of 371 homes sold, 32 more than last year.

Countywide, there were 1,231 homes sold in 2025. On average, homes sold for $499,350, up 4 percent from last year. The total amount in home sales for Berkshire County was $614 million.

See the full breakdown of each municipality's average home sale price, number of homes sold and the total amount sold in 2025 below.