Welcome to 5 Sinclair Street! This charming and light-filled Colonial, built in 1991, offers over 2,690 sqft of thoughtfully designed living space on a quiet dead-end street. Featuring 4 bedrooms and 2 bathrooms, the home is bright and inviting with vaulted ceilings, skylights, and abundant natural light. The spacious upper level includes a primary suite and separate living quarters with a separate entrance, offering excellent potential for a M/D setup with the proper permits. Enjoy a sweet, fully fenced garden on just under a quarter acre, newer siding, a 30-year roof installed in 2018, and newer ductless AC units on the lower level. A massive attached garage, double-wide driveway, partial basement, and dedicated laundry area provide endless storage and flexibility. A true delight with endless potential, conveniently located near shopping and dining, with the added benefit of low taxes. Don’t miss your chance to own a piece of Long Island charm—schedule your showing today!
Single-familyProperty Type
1991Year Built
10,019 sq ftLot Size
$234Price/Sq.Ft.
1 car garageParking
Listing by David Jaramillo• BH&G R E Realty Connect
Mastic Park, located between William Floyd Parkway and the Forge River, is a residential and waterfront Mastic neighborhood with pine-shaded streets and tidal marsh views. The neighborhood’s character concentrates around the William Floyd Parkway corridor near Montauk Highway, where delis, pizzerias, and small service storefronts set a steady, everyday rhythm. Housing reads as mid-century ranches and capes with deep setbacks, plus pockets of newer infill near the river. The Forge River frontage and nearby wetlands shape a quiet, outdoors-forward feel. Wertheim National Wildlife Refuge frames the area with boardwalks and birdlife. Local staples like Painters’ Restaurant, The Oar Steak & Seafood Grille, and Long Island Skydiving act as recognizable community touchpoints.
Provided by Walk Score and Local Logic
Market insights
5 Sinclair St · $629,999
DAYS ON MARKET
52 days
The average home goes pending in 31 days.
SALE-TO-LIST
102.4%
Most homes are selling 2% above list price.
LIST PRICE
$629,999
Median sale price in this area is $733,483. (16% higher than this home)
PRICE DROP
0 price drops
15% of homes in this area have had a price drop in the past month.
Property details
Interior
Exterior
Finance
Kitchen
Bathroom
Bedroom
Living
Dining
Interior features
First-floor bedroom
Eat-in kitchen
High ceilings
Primary bathroom
Partial basement
Full attic
10 total rooms
Bedrooms
Bedroom on the first floor
Bathrooms
2 full bathrooms
Kitchen
Electric oven
Refrigerator
Laundry & utility
Dryer
Heating & cooling
Baseboard heating
Oil heating
Ductless cooling
Exterior features
Advanced framing construction
Not waterfront
Home design
Single family residence
Parking
Driveway
1-car garage
No carport
Construction
Advanced framing technique
Utilities
Cesspool sewer
Cable connected
Electricity connected
Public trash collection
Water connected
Electricity and solar
View estimated energy costs and solar savings for this home
This expansive hi-ranch with over 2600 sq ft. is situated on a quiet dead end street. Just shy of a quarter acre, fully fenced, with a 30-year roof from 2018 and newer siding. Spacious upper floor features a primary suite with primary bathroom and separate living quarters - offering potential for a mother/daughter setup with proper permits. Newer ductless AC units on lower floor. Vaulted ceilings and numerous skylights on both levels create an open feel with lots of natural light. Make use of the massive attached garage and double-wide driveway providing more than ample parking. Garage features walk-down stairwell to partial basement, perfect for storage or flex space. Dedicated laundry area between garage entrance and living room. Affordable taxes and convenient location near shopping and restaurants.
Public Records
May 10, 2023
Sold
$421,200
$156/sq ft
OneKey® MLS as Distributed by MLS Grid #L3372540
Apr 29, 2022
Sold
$421,200
$156/sq ft
Feb 19, 2022
Pending
—
Jan 27, 2022
Listed
$395,000
$147/sq ft
Beautiful Mastic hi ranch home featuring 3+ bedrooms & 2 full baths. An abundance of natural sunlight with vaulted ceilings, 12 skylights, ceiling fans, and spacious rooms. King size primary bedroom with full bath and jacuzzi with standing shower en suite. The oversized driveway and garage for 2+ cars with an electric opener. Attic and partial basement for plenty of storage space. Electronix Alarm Systems that includes smoke, fire, and CO2 detectors. The doors, windows, screens, and skylights are all alarmed with remote panics, motion, and glass break detectors. All moldings are custom-finished pine and oak. 100 x 110 lot with new tall chain-link fenced yard and a 15 x 15 storage shed. Three heating zones. Many Updates: New 30 year roof 2018 & A/C's upstairs 2018, A/C downstairs portable 2021, New siding & all floors and porch 2019. Possible mother-daughter with proper permits. Must see to appreciate, this one won't last!
Public Records
Jun 30, 1988
Sold
$67,500
$25/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$8,456
$160 + $1,785
$1,945
2025
$8,456 (+1.3%)
$160 + $1,785
$1,945
2024
$8,350 (+16.7%)
$160 + $1,785
$1,945
2023
$7,155 (−1.5%)
$160 + $1,785
$1,945
2022
$7,266
$160 + $1,785
$1,945
2021
$7,266 (−8.4%)
$160 + $1,785
$1,945
2020
$7,929 (+2.1%)
$160 + $1,785
$1,945
2019
$7,767 (+1.8%)
$160 + $1,785
$1,945
2018
$7,626 (+1.7%)
$160 + $1,785
$1,945
2017
$7,498 (−0.2%)
$160 + $1,785
$1,945
2016
$7,510 (+6.0%)
$160 + $1,785
$1,945
2015
$7,084 (+2.6%)
$160 + $1,785
$1,945
2014
$6,902 (+2.7%)
$160 + $1,785
$1,945
2013
$6,720 (+2.9%)
$160 + $1,785
$1,945
2012
$6,533 (+9.6%)
$160 + $1,785
$1,945
2011
$5,962 (+4.1%)
$160 + $1,785
$1,945
2010
$5,727 (+5.9%)
$160 + $1,785
$1,945
2009
$5,408
$160 + $1,785
$1,945
Public record
Beds
—
Baths
—
Stories
—
Lot width
—
Lot depth
—
Lot size
10,019 Sq. Ft.
Year renovated
—
Finished Sq. Ft.
—
Unfinished Sq. Ft.
—
Total Sq. Ft.
2,692
Year built
1991
Style
Single Family Residential
County
Suffolk County
APN
0200823000800027000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 31, 2026.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.31% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 91° expected this year, 19 days in 30 years
8/10 Wind Factor
80% chance of strong winds in next 30 years
4/10 Air Factor
3 unhealthy days expected this year, 5 days in 30 years
Provided by First Street
Historical weather
Mastic, NY • 11950
Average low and high temperatures (°F)
36
23
38
25
50
35
59
43
67
53
79
63
82
68
78
61
74
59
66
48
55
38
42
27
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
88/ 100
Very good sunlight
Sunscore
This home receives average direct sun exposure in Mastic. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.8 hrs
5.5 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 5 Sinclair St
We cannot show automated home-value estimates for this home.
Nearby homes have recently sold between $505,000 and $664,000.
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $505K to $664K.