Living in Mount Sinai
Key metrics and insights for homebuyers and sellers evaluating Mount Sinai, Suffolk, NY 11766.
How far is Mount Sinai from New York City by train?
From Port Jefferson Station on the LIRR Port Jefferson Branch, scheduled weekday AM-peak service takes about 104 minutes to Penn Station, 107 minutes to Grand Central Madison, 108 minutes to Atlantic Terminal in Brooklyn (MTA LIRR timetable data).
Is Mount Sinai walkable?
Mount Sinai has a Walk Score of 32 out of 100, which Walk Score rates "Car-Dependent".
Nearby Long Island Rail Road stations and typical weekday AM-peak travel times to the Manhattan and Brooklyn terminals. Many Mount Sinai residents use whichever station best fits their branch and schedule.
AM-peak travel times on scheduled LIRR service to Penn Station, Grand Central Madison, and Atlantic Terminal (Brooklyn). Based on MTA LIRR public timetable data.
Mount Sinai Market Data
Current market conditions and pricing trends for Mount Sinai, Suffolk, NY.
Single-family, condo and co-op homes are measured separately — these medians are never blended together. Based on 135 recorded closings in ZIP 11766 between Sep 10, 2025 and Sep 10, 2026 — a settled trailing twelve months, ending about a month back so late-recorded closings are counted rather than missed. Days on market are medians, not averages. A property type with fewer than 8 closed sales in that window is left out rather than published on a sample too thin to mean anything.
Over the past 2 years, 11766 has softened — the median sale price has eased about 1% year over year to around $776K, and homes are taking longer to sell. If this trend continues, conditions could keep easing toward a more balanced market.
Based on information from OneKey® MLS, for the period October 14, 2025 through September 30, 2026. Source: OneKey MLS (recorded LI sales, trailing 12mo) + actual tax. Based on 104 recorded sales. Property tax values shown are algorithmic estimates calculated from official NY State ORPS / NYC Department of Finance assessment data aggregated by school district (Long Island) or ZIP code (NYC). These figures are an educational baseline and do not represent a guaranteed or binding tax bill. Actual taxes vary based on individual assessed value, applicable exemptions (STAR, Senior, Veteran), historical grievances, village overlays, and special district levies. Verify exact tax with the Nassau County Assessor / Suffolk County Comptroller / NYC Department of Finance before any financial commitment.
Across 8 years of county-clerk records, 91 homes in the Mount Sinai school district were bought by a company and resold within two years. Over the whole period the typical one was bought for $337,500 and resold for $515,000, a median of 8.0 months later.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +5.2%, so most of the difference is not the market carrying the house.
What these homes resold for moved from a median of $420,000 in 2017 to $739,000 in 2024, up about 76% over the period.
The pandemic years cut against the intuition that investors moved in. Companies bought 7.3% of homes here in 2019, then 4.0% in 2020 and 5.1% in 2021 — the lowest share of the 8 years. In the two years when buyers competed hardest, companies won a smaller share, not a larger one.
The resales that did happen in those years were the strongest of the period: the typical one in 2022 came in 68% above what the buyer had paid, against 51% across the years as a whole. Prices were rising underneath them while they held.
Since then it has reversed. Company buying reached 9.9% in 2024 — above its pre-pandemic level, while the market cooled.
In 2025, 9 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $400,000 and resold for a median of $680,000. Measured house by house, the typical resale was 46% above what that same buyer had paid, a median of 5.1 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +6.0%, so most of the difference is not the market carrying the house. 11% resold for less than they paid.
Companies bought 7.5% of the 134 homes sold in the Mount Sinai school district that year (10 of them).
2025 is not a complete year here. Filings reach the state months after closing, so 2025 runs only to October and its totals will keep rising. Its counts are not comparable with a full year; its medians are.
In 2024, 13 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $408,000 and resold for a median of $739,000. Measured house by house, the typical resale was 61% above what that same buyer had paid, a median of 7.7 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +8.7%, so most of the difference is not the market carrying the house.
Companies bought 9.9% of the 212 homes sold in the Mount Sinai school district that year (21 of them).
In 2023, 9 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $440,000 and resold for a median of $549,000. Measured house by house, the typical resale was 47% above what that same buyer had paid, a median of 8.0 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +1.8%, so most of the difference is not the market carrying the house.
Companies bought 6.8% of the 219 homes sold in the Mount Sinai school district that year (15 of them).
In 2022, 12 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $360,000 and resold for a median of $617,500. Measured house by house, the typical resale was 68% above what that same buyer had paid, a median of 6.4 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +4.7%, so most of the difference is not the market carrying the house.
Companies bought 7.6% of the 238 homes sold in the Mount Sinai school district that year (18 of them).
In 2021, 10 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $300,000 and resold for a median of $491,900. Measured house by house, the typical resale was 56% above what that same buyer had paid, a median of 11 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +8.4%, so most of the difference is not the market carrying the house. 10% resold for less than they paid.
Companies bought 5.1% of the 253 homes sold in the Mount Sinai school district that year (13 of them).
In 2020, 9 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $283,500 and resold for a median of $440,000. Measured house by house, the typical resale was 60% above what that same buyer had paid, a median of 11 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +14.0%, so most of the difference is not the market carrying the house.
Companies bought 4.0% of the 198 homes sold in the Mount Sinai school district that year (8 of them).
In 2019, 10 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $240,000 and resold for a median of $423,000. Measured house by house, the typical resale was 57% above what that same buyer had paid, a median of 7.7 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +2.4%, so most of the difference is not the market carrying the house.
Companies bought 7.3% of the 232 homes sold in the Mount Sinai school district that year (17 of them).
In 2018, 11 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $345,000 and resold for a median of $410,000. Measured house by house, the typical resale was 48% above what that same buyer had paid, a median of 10 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +2.9%, so most of the difference is not the market carrying the house. 27% resold for less than they paid.
Companies bought 11.5% of the 226 homes sold in the Mount Sinai school district that year (26 of them).
In 2017, 8 homes in the Mount Sinai school district were resold by a company that had bought them within the previous two years. They were bought for a median of $235,940 and resold for a median of $420,000. Measured house by house, the typical resale was 14% above what that same buyer had paid, a median of 6.7 months earlier.
That difference is gross. Renovation, carrying, financing and selling costs are not recorded anywhere public, so it is the change in price, not a profit. Over a hold of that length prices across the county moved about +4.4%, so most of the difference is not the market carrying the house. 38% resold for less than they paid.
Companies bought 7.4% of the 202 homes sold in the Mount Sinai school district that year (15 of them).
Source: property transfers recorded with the county clerk, which cover every sale rather than only those listed for sale. Filings reach the state months after closing, so these figures run to October 2025 and describe what has already happened rather than the market today.
Between 2017 and October 2025, 272 homes in the Mount Sinai school district passed between family members rather than being sold — about 17 for every 100 that sold on the open market.
90% of them recorded no price at all, so they appear in no market statistic, no listing history and no sold comparable. They are counted here because the transfer itself is filed with the county clerk, whether or not money changed hands.
Counted from the reason recorded on each transfer with the county clerk, not from the price. Transfers filed only to add or remove a name on the deed are excluded — those are paperwork, not a change of owner. Where a filing gives no reason it is not counted, so these are minimum counts rather than a complete rate, and they run to October 2025.
Of the 28 homes for sale in Mount Sinai today, 13 are now asking less than they originally asked — 46.4%, against 34.8% across Suffolk.
And among the homes that actually sold
Among the 131 homes that sold in Mount Sinai over the last twelve settled months, 25.2% had cut their price before they sold — unchanged from 23.9% over the same twelve months a year earlier. The for-sale figure runs higher than the sold figure because homes that need a reduction stay on the market longer, so they build up among the listings still available while the completed sales are led by homes that sold without cutting.
What each group got
Over those same twelve months, the 98 Mount Sinai homes that sold without ever reducing achieved 100.9% of their asking price in a median of 20 days. The 33 that did reduce achieved 93.2% of what they first asked, after 86 days.
Homes that never reduced and homes that did are different homes, priced differently from the start — these figures describe what each group did, not what a reduction causes. How any individual home performs depends on condition, layout, its position within Mount Sinai and how it shows, none of which a market median can capture.
Measured from the OneKey MLS feed, updated daily. A home counts as reduced when its current asking price is below the price it was first listed at — not against an estimate or against other homes. The for-sale figures describe homes available today; the sold figures describe closed sales between September 2025 and August 2026.
What This Means for Sellers
Mount Sinai reads as a Seller's Market: about 2.4 months of single-family supply, and homes sold in a median of 29 days over the past 12 months. If you're considering selling, this market rewards strategic pricing — not overpricing. A properly positioned listing will attract qualified buyers and maximize your net proceeds.
What This Means for Buyers
Buyers in Mount Sinai should be prepared to act quickly and come with strong offers. Pre-approval is essential, and buyers are generally better served retaining their own real estate attorney early to review the negotiation and contract. Expect competition, but don't overpay — there's a difference between being competitive and being reckless.
The listings that did not sell asked a median of $1,099,000 — 41% above the $777,000 median of the homes that closed. Counted over the trailing twelve months: every listing that closed, expired, was withdrawn or was terminated. Listings still active or under contract are not counted on either side. If the feed does not retain every withdrawn listing, the real figure is higher than the one shown, never lower.
Based on information from OneKey® MLS, for the period September 10, 2025 through September 10, 2026.
Flood informationMount Sinai: FEMA flood dataMedian NFIP cost, single-family homes, ZIP 11766: $910 a year (Aug 2026)
Median yearly cost by FEMA zone: high-risk A zones $3,090 (11 policies, small sample); coastal high-risk V zones $3,560 (8 policies, small sample); moderate- to low-risk zones (X, B, C) $630 (25 policies).
Cost trend, Suffolk County
Median yearly cost of single-family NFIP policies taking effect each month.
In Suffolk County, the typical monthly median yearly cost of single-family NFIP policies taking effect in June through August 2026 was $1,410, 14% higher than the typical month in June through August 2025 ($1,230). Based on 6,422 and 6,811 policies.
FEMA flood-loss ratings
FEMA's National Risk Index rates each census tract's expected yearly losses from flooding against every census tract in the country. For the 3 census tracts in Mount Sinai (Census-designated place):
Coastal flooding
- Relatively Moderate 1
- No expected annual losses 2
Inland flooding (heavy rain, streams)
- Relatively Moderate 1
- Relatively Low 1
- Very Low 1
Check a specific address
Look up the FEMA flood zone for any address: FEMA Flood Map Service Center · FloodSmart (FEMA).
Flood data for Suffolk County: costs by ZIP, trend and FEMA ratings →Calculated from FEMA policy data (as of Sep 8, 2026) and FEMA's NFIP residential penetration rates; ratings are FEMA's own labels from the National Risk Index (December 2025). Yearly cost is premium plus FEMA fees, single-family NFIP policies only; the insured share is residential NFIP contracts as a share of all residential buildings. Private flood insurance is not included. Not a flood-zone determination, insurance advice or a quote. Each building is priced individually.
What It's Like Living in Mount Sinai
Mount Sinai is one of Suffolk's most established residential communities, offering a distinctive blend of suburban character and metropolitan accessibility. Located in the 11766 zip code, the community is served by the Mount Sinai Union Free School District.
With a median home price of $795,000 and a median recorded property tax of $15,300 annually, Mount Sinai pairs an established housing stock with direct access to New York City. The commute to Manhattan averages approximately 104 min via the Long Island Rail Road.
Living in Mount Sinai does not mean one kind of ownership — condos selling at a median of $730K, single-family homes selling at a median of $795K, each with its own economics and day-to-day experience. The practical difference is who owns the to-do list: coop and condo buildings absorb exterior upkeep through monthly charges, while a house puts every system and repair decision in your hands. Condos are the dominant apartment form in Mount Sinai — deeded ownership with fewer transfer restrictions than a coop.
Joseph's Insider Guide to Mount Sinai
Direct answers informed by 5,000+ closed transactions across Nassau, Suffolk, Queens and Brooklyn — not the canned content you'd find on any listing portal.
Is Mount Sinai a good place to live for commuters?
The LIRR connects Mount Sinai to Penn Station and Grand Central Madison in approximately 104 min. Peak express service, station parking and walk-to-station distance vary by address, and those three factors decide what a commute actually looks like day to day.
What are property tax trends in Mount Sinai, NY?
Mount Sinai homeowners pay a median of approximately $15,300 a year in property taxes — the median of the tax figures actually recorded on homes sold here, not an estimate. The bill funds school-district, county, town, and special-district services. Taxes are assessed parcel by parcel, so two similar homes on the same street can carry very different bills — confirm the actual assessment on a specific address before relying on it.
Is now a good time to buy or sell in Mount Sinai?
Mount Sinai is currently a Seller's Market, with homes selling in about 29 days. Prices have moved +5% year-over-year. Timing decisions depend on your specific situation — contact Joseph for a no-cost strategy session tailored to your property and goals.
What makes Mount Sinai different from other Suffolk communities?
Mount Sinai is a long-established community served by the Mount Sinai Union Free School District. Prices and activity vary by property type, school district, condition and price band; the figures above show where this market stands now.
What should buyers know before making an offer in Mount Sinai?
School district boundaries in Mount Sinai often run street by street — two blocks can mean a different school zone, so confirming a home's exact attendance zone before you make an offer matters. As an Associate Broker who is also an attorney, Joseph reads title and contract details differently than most agents — and when the facts of a deal are in front of him, he knows what's worth asking about. (Not a substitute for your own attorney's representation.)
Is Mount Sinai walkable for everyday living?
Mount Sinai has a Walk Score of 32/100, measured at a single point near the centre of Mount Sinai. Walkability varies street by street, so check the score for a specific address; the LIRR provides Manhattan access in approximately 104 min.
Planning a Move to Mount Sinai?
Get the Mount Sinai Relocation Guide — schools, commute options, live market data, and insider neighborhood details compiled by an Associate Broker who is also an attorney.
Explore Mount Sinai
The latest from Mount Sinai — local news, community events, and neighborhood highlights.
Schools in Mount Sinai, NY
Mount Sinai is served by the Mount Sinai Union Free School District. Attendance zones on Long Island are assigned street by street, so a Mount Sinai mailing address does not by itself determine which school a home is zoned for.
- Elementary
- Mt Sinai Elementary School
- Middle
- Mt Sinai Middle School
- High
- ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL
These are the schools recorded on homes sold in this district over the last 12 months — the district may also serve neighbouring communities. Zones can change and run street by street — we confirm the exact assignment for any home before you offer.
Typical value is the median recorded sale price in the district. Typical annual tax and effective rate are the median recorded tax bill and that bill divided by the median sale price, across 138 recent sales carrying a reported tax figure — an observed cost ratio, not an official millage rate. District boundaries can cross town and postal lines, so always verify the district for a specific address.
See every Suffolk school district, its schools and its tax rates →
Mount Sinai Schools — Frequently Asked Questions
What school district serves Mount Sinai?
Mount Sinai is served by the Mount Sinai Union Free School District. District boundaries on Long Island often run street by street, so we confirm the district and attendance zone for a specific address before you make an offer.
What schools are zoned for Mount Sinai?
Mount Sinai is served by the Mount Sinai Union Free School District, which records these schools on homes sold in the district — elementary: Mt Sinai Elementary School; middle: Mt Sinai Middle School; high: ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL. Districts with more than one school at a level assign students by street, so confirm a specific address before relying on it.
What high school do Mount Sinai students attend?
Mount Sinai students attend ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL, part of the Mount Sinai Union Free School District.
School district boundaries on Long Island often run street by street, so a Mount Sinai mailing address doesn't guarantee a given school. We confirm a home's exact attendance zone before you make an offer.
Mount Sinai on the Map
Explore Mount Sinai and nearby areas. Zoom in to see neighborhoods, schools, transit, and local amenities.
Looking to Buy in Mount Sinai?
Browse available properties or let Joseph find the right home for you — with the read of an Associate Broker who is also an attorney.
Homes for Sale in Mount Sinai, NY
28 active listings currently on the market in Mount Sinai. Data refreshed from the MLS in real time.
Active 45d
Garden
Active 25d
Colonial
Active 46d
Other
Active 8d
Contemporary
Active 15d
A-Frame
Active 88d
Colonial
Listings courtesy of OneKey® MLS as distributed by MLS GRID.
Based on information submitted to the MLS GRID as of October 10, 2026 7:45 pm. 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.
Personal-use terms and which listings this site shows: MLS & Data Disclosures
Showing 6 of 28 active listings
View All 28 Listings in Mount SinaiRecently Closed in Mount Sinai
79 closed sales found. Recent transactions provide real-world context for current market values. For a full Comparative Market Analysis of your property, request a complimentary CMA.
← swipe to view all →
| Address | Type | Beds / Ba | Sq Ft | Closed | Sale Price | $/Sq Ft | DOM |
|---|---|---|---|---|---|---|---|
| Colonial | 4 bd / 3 ba | 2,526 | — | Sign in to view | — | 18d | |
| Condo | 2 bd / 2 ba | 1,501 | — | Sign in to view | — | 4d | |
| Exp Ranch | 3 bd / 2 ba | 2,000 | — | Sign in to view | — | 10d | |
| Colonial | 4 bd / 3 ba | 2,482 | — | Sign in to view | — | 30d | |
| Colonial | 4 bd / 3 ba | 2,497 | — | Sign in to view | — | 9d | |
| Colonial | 5 bd / 3 ba | 4,000 | — | Sign in to view | — | 18d | |
| Colonial | 5 bd / 4 ba | 2,424 | — | Sign in to view | — | 30d | |
| Ranch | 3 bd / 2 ba | 1,554 | — | Sign in to view | — | 5d | |
| Garden | 2 bd / 2 ba | — | — | Sign in to view | — | 16d | |
| Condo | 2 bd / 3 ba | 3,214 | — | Sign in to view | — | 58d | |
| Colonial | 4 bd / 3 ba | 2,500 | — | Sign in to view | — | 12d | |
| Garden | 2 bd / 2 ba | 1,025 | — | Sign in to view | — | 25d |
Source: OneKey MLS — Mount Sinai closed sales, last 180 days. Verify all figures independently before making decisions.
Get Your Home’s Value →Mount Sinai Real Estate FAQ
Expert answers to the most common questions about buying and selling in Mount Sinai.
How much does it cost to buy a home in Mount Sinai?
Is Mount Sinai a good place to buy a home, and who is it right for?
What are property taxes like in Mount Sinai, and can they be lowered?
What is the LIRR commute from Mount Sinai to Manhattan?
What is the median home price in Mount Sinai, and is it a buyer's or seller's market right now?
How are the schools in Mount Sinai?
Why work with Joseph DeVito to buy or sell in Mount Sinai?
Is Mount Sinai a buyer's or seller's market?
Are sellers cutting prices in Mount Sinai?
What counts as a price reduction on this page?
Are price cuts in Mount Sinai becoming more or less common?
Do homes that cut their price in Mount Sinai sell for less?
Joseph DeVito is a New York Licensed Associate Real Estate Broker and a New York attorney. He does not act as both broker and attorney on the same transaction: here he acts as a real estate broker only, and he is not your attorney. Real estate services provided through Keller Williams Realty Greater Nassau are not legal representation. Everything on this site is general information for educational purposes only. It is not legal advice, it creates no attorney-client relationship, and it should not be relied on as legal advice — for advice about your own situation, consult your own attorney.
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How Mount Sinai Fits Into the Suffolk County Market
Mount Sinai’s median sale price of about $795K sits about 15% above the Suffolk County median of about $689K. These are whole-county figures over a settled trailing 12 months — the same data behind our full Suffolk County reports.
County medians describe the wider market, not any specific property, and are not a valuation of a home in Mount Sinai.
Suffolk Markets Priced Like Mount Sinai
Other Suffolk communities whose current median sale price sits closest to Mount Sinai's — a practical way to see what the same budget buys elsewhere.
Live OneKey MLS medians from recent closed sales, refreshed daily. Market condition reflects months of supply. Figures describe each market, not any specific home.
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Buy or Sell in Mount Sinai, NY With an Associate Broker Who Knows Which Questions to Ask
Joseph DeVito has been part of more than 5,000 closed transactions across Nassau County, Suffolk County, Queens, and Brooklyn. As an Associate Broker who is also an attorney, he reads a deal differently than most agents — and when the facts of your Mount Sinai deal are in front of him, he knows the contract and title questions worth asking.
Also explore: Buyer Resources · Selling Your Home · All Suffolk Communities · Suffolk County Housing Market Outlook · Suffolk County Days on Market Report · Suffolk County School & Tax Breakdown