823 Mill Rd is a 2,241 square foot house on a 1.28 acre lot with 4 bedrooms and 2 bathrooms. Based on Redfin's Riverhead data, we estimate the home's value is $813,156.
Single-familyProperty Type
2002Year Built
1.28 acresLot Size
$363Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$813,156
$23K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 0.6% higher than the average sale price ($808K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2026
$13,379
$13,600 + $46,600
$60,200
2025
$13,379 (+6.4%)
$13,600 + $46,600
$60,200
2024
$12,570 (+8.3%)
$13,600 + $46,600
$60,200
2023
$11,611 (+1.8%)
$13,600 + $46,600
$60,200
2022
$11,411
$13,600 + $46,600
$60,200
2021
$11,411 (+2.5%)
$13,600 + $46,600
$60,200
2020
$11,132 (+3.7%)
$13,600 + $46,600
$60,200
2019
$10,731 (+0.4%)
$13,600 + $46,600
$60,200
2018
$10,691 (+2.5%)
$13,600 + $46,600
$60,200
2017
$10,431 (+3.6%)
$13,600 + $46,600
$60,200
2016
$10,071 (+4.8%)
$13,600 + $46,600
$60,200
2015
$9,610 (−0.4%)
$13,600 + $46,600
$60,200
2014
$9,647 (+3.8%)
$13,600 + $46,600
$60,200
2013
$9,296 (+1.4%)
$13,600 + $46,600
$60,200
2012
$9,169 (+3.0%)
$13,600 + $46,600
$60,200
2011
$8,901 (+0.9%)
$13,600 + $46,600
$60,200
2010
$8,824 (+2.2%)
$13,600 + $46,600
$60,200
2009
$8,630
$13,600 + $46,600
$60,200
Tax history for 823 Mill Rd
Year
Property tax
Land + Additions
Assessment*
2026
$13,379
$13,600 + $46,600
$60,200
2025
$13,379 (+6.4%)
$13,600 + $46,600
$60,200
2024
$12,570 (+8.3%)
$13,600 + $46,600
$60,200
2023
$11,611 (+1.8%)
$13,600 + $46,600
$60,200
2022
$11,411
$13,600 + $46,600
$60,200
2021
$11,411 (+2.5%)
$13,600 + $46,600
$60,200
2020
$11,132 (+3.7%)
$13,600 + $46,600
$60,200
2019
$10,731 (+0.4%)
$13,600 + $46,600
$60,200
2018
$10,691 (+2.5%)
$13,600 + $46,600
$60,200
2017
$10,431 (+3.6%)
$13,600 + $46,600
$60,200
2016
$10,071 (+4.8%)
$13,600 + $46,600
$60,200
2015
$9,610 (−0.4%)
$13,600 + $46,600
$60,200
2014
$9,647 (+3.8%)
$13,600 + $46,600
$60,200
2013
$9,296 (+1.4%)
$13,600 + $46,600
$60,200
2012
$9,169 (+3.0%)
$13,600 + $46,600
$60,200
2011
$8,901 (+0.9%)
$13,600 + $46,600
$60,200
2010
$8,824 (+2.2%)
$13,600 + $46,600
$60,200
2009
$8,630
$13,600 + $46,600
$60,200
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
APZ
Agricultural Protection Zoning
The intent of the Agricultural Protection Zoning Use District (APZ) is to facilitate
existing and future agricultural land uses; to preserve existing prime agricultural soils; to
maintain highly productive agricultural lands by limiting encroachment of non-agricultural development; to minimize the conflicts between agricultural and non-agricultural uses; to discourage residential sprawl and minimize adverse fiscal impacts through the extension of municipal services; to maintain agricultural vistas, to promote agro-tourism, and to preserve the rural character of the Town of Riverhead.
Permitted uses
Include but are not limited to:
Equestrian facility
Greenhouse / nursery
Livestock production
Agriculture-Other
Housing-Single unit
Property details
Interior
Basement Information
Basement Type: Full
Bathroom Information
# of Full Baths: 2
Heating & Cooling
Heating Type: Hot Water Steam
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 8
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: Cape Cod
Building Construction Quality: Average
Exterior Wall: Aluminum/Vinyl
Building Type: Single Family
Property Information
Subdivision Name: ALEXANDER JOACHIN
Living Sq. Ft: 2,241
Ground Floor Sq. Ft: 1,635
Building Sq. Ft: 2,821
# of Stories: 1.5
Legal Description: MINOR X A JOACHIM J NAPOLITANO & R ROMANO #10716 11/28/01 LOT 3
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 580
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 55,757
Legal Lot Number: 3
Legal Block Number: 1
School Tax District: RIVERHEAD
Municipality Name: RIVERHEAD
Acres: 1.28
Zoning Code: APZ
State Use Description: SNGL FAM RESID W ASSC APT
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 2,241
Stories: 1.5
Lot Size: 1.28 acres
Style: Single Family Residential
Year Built: 2002
Year Renovated: —
County: Suffolk County
APN: 0600081000100015003
Home facts updated by county records on Aug 31, 2026
Around this home
Schools
Riley Avenue School
Public PreK-4 • Assigned • 1.6mi
2/10
Riverhead Middle School
Public 6-8 • Assigned • 2.1mi
3/10
Riverhead Senior High School
Public 9-12 • Assigned • 1.9mi
3/10
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
4/10 Fire Factor
0.93% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 93° expected this year, 17 days in 30 years
8/10 Wind Factor
80% chance of strong winds in next 30 years
3/10 Air Factor
2 unhealthy days expected this year, 3 days in 30 years
Provided by First Street
Historical weather
Riverhead, NY • 11901
Average low and high temperatures (°F)
35
26
36
27
48
37
57
45
65
54
76
64
80
70
77
65
72
63
63
54
54
44
41
31
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 8.9 hours in
June and 4.6 hours in December, which is comparable to the
U.S. average for solar exposure.
8.9 hrs
4.6 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$773,000 – $936,000
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