26 Williams Avenue, Holtsville, NY 11742

26 Williams Avenue, Holtsville, NY 11742

$649,000 · 3 bed · 3 bath · 2,080 sq ft · built 1960 · MLS# 1057713 · Active

Welcome to this well-maintained 3-bedroom, 3-bath ranch situated on a flat .46-acre property in Holtsville. The home features a vinyl and brick exterior, Andersen windows, hardwood oak, vinyl and tile flooring, and a spacious layout with plenty of natural light. The living area features a fireplace, while an additional wood-burning stove adds warmth and character. The kitchen offers a new refrigerator and range, along with ample cabinetry and counter space. A full finished basement provides additional living space and plenty of storage. Additional features include 200-amp electric, a boiler installed…

Single-family homes in the Sachem Central School District sold for a median of $679,000 (typically $600,000–$750,000) across 523 recorded sales between Oct 7, 2025 and Oct 2, 2026, up 4.5% on the 12 months before. This home's $649,000 list price sits in the mid-market single-family tier for the Sachem Central School District.

ZIP 11742 has about 2.1 months of single family inventory — seller's market. Demand is outpacing supply, so homes sell quickly with firm pricing and limited room to negotiate.

At about $12,776 a year, this home's property tax runs roughly 16% above the $11,000 typical for Sachem Central School District. Suffolk bills combine town, school and special-district levies, so two homes at the same price in neighboring districts can carry materially different taxes. Exemptions such as STAR, Senior or Veteran move the number as well — a new owner's bill is often not the same as the seller's.

OneKey MLS (recorded LI sales, trailing 12mo) + actual tax

Listings courtesy of OneKey® MLS as distributed by MLS GRID.

Based on information submitted to the MLS GRID as of October 11, 2026 5:30 am. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

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Holtsville Market Trend

Holtsville has tightened over the past 2 years: the median sale price has advanced roughly 7% year over year to near $628K, and sales have generally been closing faster. Conditions continue to favor sellers; if the trend holds, prices could keep firming. Alongside that firming trend, note that the roughly $585K blended median combines very different property types, so it may not describe any single one: of 247 recent sales, single-family made up the largest share at about 63% with the highest median near $691K, condos about 23% near $440K, co-ops about 14% near $280K. Because co-ops, though not the most common, is priced far enough from the rest to pull the blend down, the blended figure tends to sit below the single-family median rather than above it — so a typical single-family house has tended to sell closer to $691K, roughly $106K over the headline number. These are past medians, not predictions or guarantees, and individual properties vary widely; anyone weighing a specific property should review current comparable sales for that property type.

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Looking for off-market opportunities or a property attorney's read on this listing? Contact Joseph DeVito — Lic. R.E. Associate Broker + NY-licensed real estate attorney.