19 Knoll Lane, Smithtown, NY 11787
$899,999 · 4 bed · 3 bath · 2,471 sq ft · built 1969 · MLS# 1009532 · Active
Welcome to 19 Knoll Lane, Smithtown — Where Comfort Meets Elegance Nestled in the heart of Smithtown, this stunning 4-bedroom, 2.5-bath colonial is the home you've been waiting for. From the moment you step inside, you'll be captivated by the thoughtfully designed layout that perfectly balances everyday living with sophisticated entertaining. The spacious formal living room and formal dining room set the stage for memorable gatherings, while the warm and inviting den offers the perfect retreat for quiet evenings at home. The eat-in kitchen is ideal for casual meals and…
Single-family homes in the Smithtown Central School District sold for a median of $845,000 (typically $735,000–$995,000) across 440 recorded sales between Oct 6, 2025 and Oct 2, 2026, up 5% on the 12 months before. This home's $899,999 list price sits in the mid-market single-family tier for the Smithtown Central School District.
ZIP 11787 has about 2.7 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 $14,430 a year, this home's property tax is in line with the roughly $15,000 typical for Smithtown 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 2:30 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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Smithtown Market Trend
Over the past 2 years, Smithtown has strengthened — the median sale price has risen roughly 5% year over year to around $859K, and homes have generally been selling faster. Sellers currently hold the stronger hand, and if the pattern persists, prices could continue to firm.
Considering Smithtown? Explore the Smithtown community guide →
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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.
