Suffolk County  »  11766  »  Old Post Rd  »  84 Old Post Rd

84 Old Post Road, Mount Sinai, NY 11766 - Property report

Also known as: 84 Old Post Rd

Property image for 84 Old Post Road, Mount Sinai, NY 11766
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Property type

One Family Year-Round Residence (210)

Year built

1962

Acreage

0.47

Sale price

$350,000

General information

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Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
84 Old Post Road
ZIP code
11766
County
Suffolk
Village (SWIS code)
472289
Parcel ID
8712190

Owner

Find out who owns 84 Old Post Road, Mount Sinai, NY 11766. Uncover corporate and individual owners with a free account.

Sales
Sale date
05/04/2015
Sale price
$350,000
Arm's length
Tax
Tax year
2025-2026
Current property tax
$12,995
Building
Property type
One Family Year-Round Residence (210)
Building sq. ft.
1,694
Year built
1962
Lot
Acreage
0.47

Area overview

Walk score
4 /100.  Car-Dependent
Transit score
0 /100.  Minimal Transit
Bike score
3 /100.  Somewhat Bikeable
School district
472207

View more such as transportation, nearby schools and risk designations.

Ownership

Ownership information for 84 Old Post Road, Mount Sinai, NY

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 84 Old Post Road, Mount Sinai, NY 11766

Sale date Sale price Buyer name Seller name
05/04/2015 $350,000 XXXXXX XXXXXXX; XXXXXXX XXXXXXX XXXXX XXXXXXXXXX
02/18/2014 $225,000 XXXXX XXXXXXXXXX XXXXX XXXXXXXX; XXXXXX XXXXXXXX X

*Most recent sales on record for this property.

More about Suffolk County property records.

Title documents

Date Type Amount Party 1 Party 2
05/21/2015 - R
05/04/2015 - D		 Deed
(Bargain and sale)		 XXXXX XXXXXXXXXX XXXXXX XXXXXXX
03/12/2014 - R
02/18/2014 - D		 Deed
(Bargain and sale)		 XXXXX XXXXXXXX XXXXX XXXXXXXXXX
11/17/1997 - R
04/30/1997 - D		 Deed

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 84 Old Post Road, Mount Sinai, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2025-2026
Property tax
$12,995
Recent tax assessments
Market value
$596,227
Assessed value
$3,160

More about Suffolk County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Market value Assessed value Tax rate Property tax Y-o-Y change
2025-2026 $596,227 $3,160 411.221 $12,995 +4.30%
2024-2025 $596,227 $3,160 394.249 $12,458 +3.18%
2023-2024 $585,186 $3,160 382.097 $12,074 +3.44%
2022-2023 $509,677 $3,160 369.378 $11,672 +2.22%
2021-2022 $427,027 $3,160 361.352 $11,419 +2.37%
2020-2021 $410,390 $3,160 352.982 $11,154 +2.16%
2019-2020 $367,442 $3,160 345.531 $10,919 +0.12%
2018-2019 $367,442 $3,160 345.113 $10,906 +1.84%
2017-2018 $351,111 $3,160 338.893 $10,709 +0.54%
2016-2017 $347,253 $3,160 337.064 $10,651 +1.70%
Permits

Permit information for 84 Old Post Road, Mount Sinai, NY

No recently recorded permits for this property.

Neighborhood

Brookhaven residential market stats

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.

Median sale price

$575,000

4.5% Y-o-Y

Median price/sq. ft.

$348

2.4% Y-o-Y

Suffolk county median sale price

$677,000

5.9% Y-o-Y

Risk

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FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 84 Old Post Road, Mount Sinai, NY 11766 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Port Jefferson Elementary School 5 Public PK, K-5 364 0.80
Port Jefferson Elementary School 5 Public PK, K-5 364 0.80
Maryhaven Center Of Hope NR Private 47 0.99
Mount Sinai Middle School 5 Public 5-8 667 1.12
Our Lady of Wisdom Regional School NR Private PK-8 74 1.54
Our Lady of Wisdom Regional School NR Private PK-8 74 1.54
Mount Sinai Elementary School 7 Public K-4 659 2.10
John F Kennedy Middle School 4 Public 4, 6-8 822 2.23
North Shore Christian School NR Private PK, K-6 101 2.49
North Shore Christian School NR Private PK, K-6 101 2.49
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Maryhaven Center Of Hope NR Private 47 0.99
Mount Sinai Middle School 5 Public 5-8 667 1.12
Our Lady of Wisdom Regional School NR Private PK-8 74 1.54
Port Jefferson Middle School 7 Public 6-8 222 1.64
John F Kennedy Middle School 4 Public 4, 6-8 822 2.23
North Country Road School 5 Public 6-8 534 2.53
The Laurel Hill School NR Private PK-8 321 3.07
Paul J Gelinas Junior High School 8 Public 7-9 647 4.32
Selden Middle School 4 Public 6-8 1,058 5.02
The Stony Brook School NR Private 7-12 412 5.03
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Mount Sinai High School 9 Public 9-12 720 0.90
Maryhaven Center Of Hope NR Private 47 0.99
Earl L Vandermeulen High School 9 Public 9-12 323 1.64
Comsewogue High School 6 Public 9-12 1,153 2.73
Ward Melville Senior High School 10 Public 9-12 1,507 2.85
Miller Place High School 9 Public 9-12 820 2.86
Sunshine Alternative Education Center NR Private 10-12 10 3.69
The Stony Brook School NR Private 7-12 412 5.03
Rocky Point High School 7 Public 9-12 923 5.18
Newfield High School 8 Public 9-12 1,559 5.33

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 84 Old Post Road, Mount Sinai, NY

115 N Country Rd, Mount Sinai 360 Pipe Stave Hollow Rd, Mount Sinai 184 MT Sinai Ave, Mount Sinai 38 Hayward Ave, Mount Sinai 365 Route 25a, Mount Sinai 679 MT Sinai Coram Rd, Mount Sinai 11 Birch Hill Rd, Mount Sinai 2 Birch Hill Rd, Mount Sinai 115 MT Sinai Ave, Mount Sinai 449 Route 25a, Mount Sinai 35 MT Sinai Ave, Mount Sinai 60 MT Sinai Ave, Mount Sinai 27 Apricot Rd, Mount Sinai 209 N Country Rd, Mount Sinai 5 Birch Hill Rd, Mount Sinai 8 Hawthorne St, Mount Sinai 117 MT Sinai Ave, Mount Sinai 37 MT Sinai Ave, Mount Sinai 31 MT Sinai Ave, Mount Sinai 80 W Shore Rd, Mount Sinai

Nearby ZIP codes for 84 Old Post Road, Mount Sinai, NY

11720, Suffolk County, NY 11727, Suffolk County, NY 11733, Suffolk County, NY 11738, Suffolk County, NY 11742, Suffolk County, NY 11755, Suffolk County, NY 11763, Suffolk County, NY 11764, Suffolk County, NY 11776, Suffolk County, NY 11777, Suffolk County, NY 11778, Suffolk County, NY 11784, Suffolk County, NY 11786, Suffolk County, NY 11789, Suffolk County, NY 11790, Suffolk County, NY 11953, Suffolk County, NY 11961, Suffolk County, NY 11980, Suffolk County, NY

Frequently asked questions

What is the year built for 84 Old Post Road, Mount Sinai, NY 11766?

The development at 84 Old Post Road, Mount Sinai, NY 11766 was built in 1962.

What is the total square footage of 84 Old Post Road, Mount Sinai, NY 11766?

84 Old Post Road, Mount Sinai, NY 11766 has a total of 1,694 square feet.

When was 84 Old Post Road, Mount Sinai, NY 11766 last sold and what was the sale price?

84 Old Post Road, Mount Sinai, NY 11766 was last sold on 05/04/2015 for $350,000.

What is the assessed value of 84 Old Post Road, Mount Sinai, NY 11766?

84 Old Post Road, Mount Sinai, NY 11766 is currently assessed at $3,160.

What are the property taxes for 84 Old Post Road, Mount Sinai, NY 11766?

The property taxes for 84 Old Post Road, Mount Sinai, NY 11766 total $12,994.

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