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Home Values · Suffolk County · Mount Sinai, NY

What's your home worth in Mount Sinai?

The median home in Mount Sinai sold for $775,000 — single-family prices ▲ 13.5% over the past year.

FreeNo obligationSell for 1.99%, not 6%
$775,000
Median sale price
59
Homes sold (12 mo)
▲ 13.5%
1-year single-family trend
Single-family$800,000· 50 soldCondo$720,000· 9 sold

Based on recorded residential sales over the last 12 months (all home types). Source: ATTOM public property records · updated quarterly · as of July 2026.

About the neighborhood

From Old Mans to harbor town

Settlers knew it as Old Mans in the 1660s, and Mount Sinai has since moved through lives as a farming and fishing hamlet, a resort town, and finally a quiet residential enclave on Long Island's North Shore. Cottages from the resort era survive in spots like Crystal Brook Park, mixing with mid-century houses and newer construction on winding roads, some with bluff views over the Sound.

Mount Sinai Harbor and Cedar Beach are the gathering points, and the Chandler Estate, once a retreat for Marilyn Monroe and Arthur Miller, is now a preserved park with wooded trails. Schools sit together on a campus-like setting, and the fire department, founded by residents in the 1930s, still signals the hamlet's self-reliant streak. A fit for buyers after a settled, waterside routine.

Mount Sinai, Suffolk County

Where Mount Sinai sits

The official neighborhood boundary — every sale behind the numbers above closed inside this outline.

Mount Sinai · Suffolk County

The locqube difference

Selling in Mount Sinai? Keep more of your equity.

On a $775,000 sale, a traditional 6% commission is about $46,500. With locqube it's a flat $899 or 1.99% — keeping more of what you built.

Traditional 6%
$46,500
locqube · 1.99%
$15,423
or flat fee
$899
~$31,078
more kept in your pocket
1.99% fee Dedicated in-house agent AI valuation

Possible because our agents are in-house and one platform does the busywork — savings we pass to you. Run your own numbers →

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They made it so easy — we felt cared for, heard and appreciated.
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Nick & Katie Simpson
Saved $25,877 in commissions

Find out what your Mount Sinai home is worth.

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Questions, answered

The fastest way to find out is a free locqube valuation. Enter your address and we'll combine recent Mount Sinai sales, your home's size and condition, and live market data into an accurate, no-obligation estimate — usually in under a minute.
The median home in Mount Sinai sold for about $775,000 across 59 recorded sales in the past year — all home types combined. Among single-family homes, the area's most-sold type, prices moved ▲ 13.5% year over year. Your home's value depends on its size, condition and exact location.
From recorded residential sales in Mount Sinai over the trailing 12 months — all home types, sourced from ATTOM public property records and refreshed quarterly. It reflects what actually closed, not asking prices.
Yes — New York and Connecticut owners can sell by owner, and locqube's Self-Serve plan backs you with MLS exposure, locqube AI guiding every step, and a live dashboard for a flat $899. A licensed agent stays one tap away whenever you want one. How selling by owner works → The New York by-owner guide →
List with locqube — a flat $899 or 1.99% instead of the traditional 6%, with a dedicated in-house agent and AI-powered pricing. On a typical Mount Sinai sale that keeps roughly $31,078 more in your pocket.

Ready when you are

See your Mount Sinai home's value.