This absolutely gorgeous colonial in the Commack School District is one that will not disappoint! The beautify renovated first floor opens up into the Livingroom featuring high hats and built in speakers, Stone surround fireplace with Vermont casting wood burning stove insert, flowing into the kitchen which has been remodeled with SS appliances, Cambria quartz countertops, ample pull-outs and spice cabinet. Second floor hosts 3 ample sized bedroom and bath. Take a step into your own private oasis in back featuring an inground saltwater pool, newer liner and loop lock cover, gazebo, paver patio, decking, bluestone bar, outdoor speakers, and generator. Roof, siding, gutters, and portico all updated in 2017. This house has to many upgrades to list. This house is one not to be missed!, Additional information: Separate Hotwater Heater:Y
Single-familyProperty Type
1959Year Built
0.29 acresLot Size
$557Est. Price/Sq.Ft.
Listing by Alexander Koutrouby• Signature Premier Properties
Listing by Zachary Scher• Signature Premier Properties
Bought with Thomas Miller• Century 21 AA Realty
Source:OneKey® MLS as Distributed by MLS Grid #L3366655
Redfin Estimate
$859,857
$100K since sold in September 2022$17K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 9.7% higher than the average sale price ($784K) of 5 comparable homes.
Redfin Premier agent • Licensed Real Estate Salesperson
Sale history for 21 Byron Rd
Date
Event
Price
Public Records
Sep 1, 2022
Sold
$760,000
$492/sq ft
OneKey® MLS as Distributed by MLS Grid #L3366655
Apr 20, 2022
Sold
$760,000
$492/sq ft
Jan 24, 2022
Pending
—
Jan 5, 2022
Listed
$699,999
$453/sq ft
Dec 29, 2021
Coming Soon
$699,999
$453/sq ft
This absolutely gorgeous colonial in the Commack School District is one that will not disappoint! The beautify renovated first floor opens up into the Livingroom featuring high hats and built in speakers, Stone surround fireplace with Vermont casting wood burning stove insert, flowing into the kitchen which has been remodeled with SS appliances, Cambria quartz countertops, ample pull-outs and spice cabinet. Second floor hosts 3 ample sized bedroom and bath. Take a step into your own private oasis in back featuring an inground saltwater pool, newer liner and loop lock cover, gazebo, paver patio, decking, bluestone bar, outdoor speakers, and generator. Roof, siding, gutters, and portico all updated in 2017. This house has to many upgrades to list. This house is one not to be missed!, Additional information: Separate Hotwater Heater:Y
Public Records
Jun 5, 2013
Sold
$360,000
$233/sq ft
OneKey® MLS as Distributed by MLS Grid #L2505254
May 31, 2013
Sold
—
Jun 19, 2012
Listed
$379,000
$245/sq ft
**View Virtual Tour** Nice Colonial, Hardwood Floors, In Ground Pool, Fireplace, Updated Roof, Updated Windows, Gas Heat And Cooking, Vinyl Fence, Freshly Painted., Additional information: Appearance:Excellent
Year
Property tax
Land + Additions
Assessment*
2026
$14,755
$360 + $4,845
$5,205
2025
$14,755 (+3.6%)
$360 + $4,845
$5,205
2024
$14,249 (−0.7%)
$360 + $4,845
$5,205
2023
$14,356 (+10.7%)
$360 + $4,845
$5,205
2022
$12,967
$360 + $4,845
$5,205
2021
$12,967 (+2.1%)
$360 + $4,845
$5,205
2020
$12,703 (+0.4%)
$360 + $4,845
$5,205
2019
$12,656 (+5.4%)
$360 + $4,845
$5,205
2018
$12,005 (+3.3%)
$360 + $4,845
$5,205
2017
$11,626 (+1.0%)
$360 + $4,845
$5,205
2016
$11,515 (+2.7%)
$360 + $4,845
$5,205
2015
$11,212 (+3.4%)
$360 + $4,845
$5,205
2014
$10,848 (+16.4%)
$360 + $4,845
$5,205
2013
$9,316 (−9.9%)
$360 + $4,845
$5,205
2012
$10,345 (+18.3%)
$360 + $4,845
$5,205
2011
$8,748 (+2.9%)
$360 + $4,845
$5,205
2010
$8,499 (+50.1%)
$360 + $4,845
$5,205
2009
$5,664
$360 + $4,845
$5,205
Tax history for 21 Byron Rd
Year
Property tax
Land + Additions
Assessment*
2026
$14,755
$360 + $4,845
$5,205
2025
$14,755 (+3.6%)
$360 + $4,845
$5,205
2024
$14,249 (−0.7%)
$360 + $4,845
$5,205
2023
$14,356 (+10.7%)
$360 + $4,845
$5,205
2022
$12,967
$360 + $4,845
$5,205
2021
$12,967 (+2.1%)
$360 + $4,845
$5,205
2020
$12,703 (+0.4%)
$360 + $4,845
$5,205
2019
$12,656 (+5.4%)
$360 + $4,845
$5,205
2018
$12,005 (+3.3%)
$360 + $4,845
$5,205
2017
$11,626 (+1.0%)
$360 + $4,845
$5,205
2016
$11,515 (+2.7%)
$360 + $4,845
$5,205
2015
$11,212 (+3.4%)
$360 + $4,845
$5,205
2014
$10,848 (+16.4%)
$360 + $4,845
$5,205
2013
$9,316 (−9.9%)
$360 + $4,845
$5,205
2012
$10,345 (+18.3%)
$360 + $4,845
$5,205
2011
$8,748 (+2.9%)
$360 + $4,845
$5,205
2010
$8,499 (+50.1%)
$360 + $4,845
$5,205
2009
$5,664
$360 + $4,845
$5,205
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Property details
Interior
Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Hot Air
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: Colonial
Building Construction Quality: Average
Exterior Wall: Aluminum/Vinyl
Building Type: Single Family
Pool Information
Pool Type: Steel/Vinyl
Has Pool
Property Information
Subdivision Name: MAYFAIR ESTATES
Living Sq. Ft: 1,544
Ground Floor Sq. Ft: 854
Building Sq. Ft: 1,788
# of Stories: 2
Legal Description: 12-481151 TC-52 *2761 SEC H LOT 357 MAYFAIR ESTS
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 244
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 12,632
Legal Lot Number: 357
Legal Block Number: 3
School Tax District: COMMACK
Municipality Name: SMITHTOWN
Acres: 0.29
State Use Description: SINGLE FAMILY RESID
Utility Information
Sewer Type: Private
Water Service Type: Commercial
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 3
Baths: 2.5
Sq. Ft.: 1,544
Stories: 2.0
Lot Size: 0.29 acres
Style: Single Family Residential
Year Built: 1959
Year Renovated: —
County: Suffolk County
APN: 0800063000300038000
Home facts updated by county records on Aug 21, 2026
Around this home
Schools
Some nearby schools may not be within this home's attendance zone. Please check the Commack Union Free School District website to verify.
Indian Hollow School
Public K-2 • 0.6mi
Commack High School
Public 9-12 • 0.9mi
9/10
North Ridge School
Public K-2 • 1.0mi
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
5/10 Heat Factor
7 days above 98° expected this year, 15 days in 30 years
8/10 Wind Factor
80% chance of strong winds in next 30 years
4/10 Air Factor
4 unhealthy days expected this year, 5 days in 30 years
Provided by First Street
Historical weather
Commack, NY • 11725
Average low and high temperatures (°F)
36
24
38
25
52
36
62
44
69
53
81
63
86
70
81
64
75
60
66
49
55
40
41
28
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 8.8 hours in
June and 4.5 hours in December, placing it below the
U.S. average for solar exposure.
8.8 hrs
4.5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$817,000 – $989,000
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