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6 Old Post Road, Mount Sinai, NY 11766 Property Information

6 Old Post Road, Mount Sinai, NY 11766 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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6 Old Post Road, Mount Sinai, NY 11766
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Address

Primary address 6 Old Post Road, Mount Sinai
Zip code 11766
County Suffolk
Municipality Brookhaven
Parcel ID 8710928

Sales & Tax Overview for 6 Old Post Road, Mount Sinai

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Property tax $18,711

Lot & Building Information for 6 Old Post Road, Mount Sinai

Building sqft 2,952
Building class One Family Year-Round Residence (210)
Acreage 1.14
Year built 1860
Rooms 7
Bedrooms 2
Bathrooms 2
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Zoning, Use & Area Overview

Walk Score
Transit Score
Bike Score


School district Mount Sinai

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 6 Old Post Road, Mount Sinai

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About 6 Old Post Road, Mount Sinai

What is the year built & the total sq. ft. for 6 Old Post Road, Mount Sinai, NY 11766?

6 Old Post Road, Mount Sinai, NY 11766 was built in 1860 and has a total of 2,952 square feet.

What is the assessed value of 6 Old Post Road, Mount Sinai, NY 11766 and the property tax paid?

Assessed at $4,550, the tax amount paid for 6 Old Post Road, Mount Sinai, NY 11766 is $18,710.

Ownership Information

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Real Estate Reports:
Eliza Theiss, Jun 23, 2026 NYC Resale Gains & Losses: Every Borough Made Money in 2025, Except Manhattan
In 2025, NYC home-sellers mostly made money. But, in Manhattan, resales came with losses — and it was apartments and recent buyers that absorbed them.
Laura Pop-Badiu, Jun 11, 2026 NYC Business Leaders on RTO: Survey Reveals Hybrid Still Dominates, Office Attendance Set to Rise
Hubble’s recent survey of 126 founders, CEOs and other decision-makers in New York City’s startup ecosystem revealed how local business leaders are approaching workplace strategy in 2026 and beyond.
Eliza Theiss, Jun 04, 2026 World Cup or Your Mortgage/Rent? Ticket Prices Rival Host City Housing Costs
World Cup ticket prices rival monthly housing expenses in the 11 U.S. host cities, with even the cheapest seats covering weeks or even months of rent or mortgage payments.
Research 100M+ property records powered by:
  • 2000+ governmental and public data sources
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Past Sales & Property History for 6 Old Post Road, Mount Sinai

Create a free account to view the complete sales history for 6 Old Post Road, Mount Sinai, including title documents, transfer conditions, mortgages and liens.

No recorded sales for this property.

Title Documents for 6 Old Post Road, Mount Sinai

Data not available for this property.

Property Taxes for 6 Old Post Road, Mount Sinai

Access detailed property tax data for 6 Old Post Road, Mount Sinai, NY 11766. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year 2025-2026
Property tax $18,711
Market value $858,491
Assessed value $4,550

Assessment History for 6 Old Post Road, Mount Sinai

Here's the assessment & property tax history for 6 Old Post Road, Mount Sinai, including the evolution of the total tax rate and corresponding property tax.

Year Market value Assessment value Total tax rate Property tax Year over year change
2025-2026 $858,491 $4,550 411.221 $18,711 +4.30%
2024-2025 $858,491 $4,550 394.249 $17,938 +3.18%
2023-2024 $842,592 $4,550 382.097 $17,385 +3.44%
2022-2023 $733,871 $4,550 369.378 $16,807 +2.22%
2021-2022 $614,864 $4,550 361.352 $16,442 +2.37%

Permits for 6 Old Post Road, Mount Sinai

The complete history of permits filed for 6 Old Post Road, Mount Sinai, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

Data not available for this property.

Brookhaven residential market stats

Median Sale Price
$575,000
4.5% YoY
Median Price/Sqft
$348
2.4% YoY
Suffolk County Median Sale Price
$677,000
5.9% YoY

Access a detailed real estate market overview of Brookhaven so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Brookhaven and compare it to other neighborhoods in Suffolk County.

Risk

Create a free account to unlock extended information for 6 Old Post Road, Mount Sinai, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).

FEMA flood zone(s) AE, X (See more on map)

Transportation

Access the detailed traffic volume map for 6 Old Post Road, Mount Sinai to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

View daily traffic map

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance to school (mi)
Mount Sinai Middle School 5 Public 5-8 667 0.82
Port Jefferson Elementary School 5 Public PK, K-5 364 1.24
Port Jefferson Elementary School 5 Public PK, K-5 364 1.24
Maryhaven Center Of Hope NR Private 47 1.43
Mount Sinai Elementary School 7 Public K-4 659 1.66

Nearest middle schools

Name Rating Type Grade range No of students Distance to school (mi)
Mount Sinai Middle School 5 Public 5-8 667 0.82
Maryhaven Center Of Hope NR Private 47 1.43
Our Lady of Wisdom Regional School NR Private PK-8 74 1.98
Port Jefferson Middle School 7 Public 6-8 222 2.08
North Country Road School 5 Public 6-8 534 2.09

Nearest high schools

Name Rating Type Grade range No of students Distance to school (mi)
Mount Sinai High School 9 Public 9-12 720 0.66
Maryhaven Center Of Hope NR Private 47 1.43
Earl L Vandermeulen High School 9 Public 9-12 323 2.08
Miller Place High School 9 Public 9-12 820 2.47
Comsewogue High School 6 Public 9-12 1,153 2.77

Data provided by GreatSchools.org © 2025. All rights reserved.

Neighbors for 6 Old Post Road, Mount Sinai

Here are the neighbors for 6 Old Post Road, Mount Sinai.

Address Square feet Purchase date Purchase price
140 MT Sinai Ave, Mount Sinai 2,471 10/07/2010
60 N Country Rd, Mount Sinai 751
555 Canal Rd, Mount Sinai 2,001 03/13/2018 $425,000
123 MT Sinai Ave, Mount Sinai 2,774 10/12/1995 $232,500
48 Birch Hill Rd, Mount Sinai 1,637 01/31/2022 $650,000
49 N Country Rd, Mount Sinai 3,684 12/02/2020 $749,888
111 N Country Rd, Mount Sinai 1,649 08/18/2021 $470,000
47 N Country Rd, Mount Sinai 1,990 07/27/2015 $469,996
31 Ashland St, Mount Sinai 1,527 11/01/2021
4 Old Post Rd, Mount Sinai 3,731 06/05/2018 $507,500
8 Old Post Rd, Mount Sinai 06/27/2007
109 N Country Rd, Mount Sinai 1,625 08/29/2022 $545,000
188 MT Sinai Ave, Mount Sinai 1,536
179 MT Sinai Ave, Mount Sinai 09/10/2015
119 MT Sinai Ave N, Mount Sinai 1,800 08/09/2005
42 Birch Hill Rd, Mount Sinai 1,467 12/22/2023
88 Old Post Rd, Mount Sinai 08/21/2023 $484,700
559 Canal Rd, Mount Sinai 1,182 08/18/2023 $515,000
529 MT Sinai CRM Rd, Mount Sinai 12/14/2023 $499,999
6 Ashland St, Mount Sinai 1,429 05/11/2022

Nearby ZIP Codes for 6 Old Post Road, Mount Sinai

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