Nassau County  »  11783  »  Duff Pl  »  4100 Duff Pl

4100 Duff Place, Seaford, NY 11783 - Property report

Also known as: 4100 Duff Pl

Property image for 4100 Duff Place, Seaford, NY 11783
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Property type

Professional Building (Doctor, Dentist, Chiropractor, or Combination of Professions) (465.14)

Year built

1977

Acreage

0.395

Sale price

$2,000,000

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
4100 Duff Place
ZIP code
11783
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
None (unincorporated town)
Parcel ID
52-A-43

Owner

Find out who owns 4100 Duff Place, Seaford, NY 11783. Uncover corporate and individual owners with a free account.

Building
Property type
Professional Building (Doctor, Dentist, Chiropractor, or Combination of Professions) (465.14)
Building sq. ft.
6,464
Buildings on lot
1
Stories
1
Year built
1977
AC
Central
Sales
Sale date
06/12/2026
Sale price
$2,000,000
Arm's length
Tax
Tax year
2026
Current property tax
$58,506
Tax class
Zoning & Use
Zoning
Capitalization rate
Area type
Neighborhood or spot
Lot
Acreage
0.395
Topography
Level
Land
Primary site

Area overview

Walk score
56 /100.  Somewhat Walkable
Transit score
16 /100.  Minimal Transit
Bike score
42 /100.  Somewhat Bikeable
School district
3018
Street
Paved
Traffic
Heavy

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

Commercial Buildings

Sq. ft. Structure Grade Year built Stories
6,464 Medical office bldg B- 1977 1
Floor distribution
Floors Sq. ft. Use Construction Condition Exterior wall Heating Air conditioning Plumbing
B1-B1 3,232 Medical center Central
01-01 3,232 Medical center Central
Ownership

Ownership information for 4100 Duff Place, Seaford, NY

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

Sales history for 4100 Duff Place, Seaford, NY 11783

Sale date Sale price Buyer name Seller name
06/12/2026 $2,000,000 XXXX XXXXX XXXXXX XXX XXXX XXXXX XXXXXX XXX
04/29/2002 $920,000 XXXX XXXXX XXXXXX, XXX XXXX XXXX XXXXX XXXXX, XXX
05/20/1996 $70,000 XXXXX/XXXXX/XXXXXXXXX XXXXXXXX X/XXXXX X/XXXXXX XXXXXXXXX XXXXXXXXXX XXXXXXXXX

*Most recent sales on record for this property.

More about Nassau County property records.

Title documents

Date Type Amount Party 1 Party 2
07/01/2026 - R
06/12/2026 - D		 Deed
(Deed commercial/vacant land)		 XXXX XXXXX XXXXXX XXX XXXX XXXXX XXXXXX XXX
04/16/2025 - R Other
(Mortgage satisfaction)		 XXXX XXXXX XXXXXX XXX XXXXXXXX XXXXX XXXX XX
05/06/2002 - R
04/29/2002 - D		 Deed XXXX XXXX XXXXX XXXXX, XXX XXXX XXXXX XXXXXX, XXX
07/17/1996 - R
06/01/1996 - D		 Deed XXXXX XXXXX & XXXXXXXXX XXXXXXXX XXXXX & XXXXXX XXXX XXXX XX XXXXX
05/28/1996 - R
05/20/1996 - D		 Deed XXXXXXXXX XXXXXXXXXX XXXXXXXXX XXXXX/XXXXX/XXXXXXXXX XXXXXXXX X/XXXXX X/XXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 4100 Duff Place, Seaford, NY

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

Current property tax
Tax year
2026
Tax class
Property tax
$58,506
Recent tax assessments
Market value
$817,900
Assessed value
$8,179
Transitional assessed value

More about Nassau 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
2026 $817,900 $8,179 715.325 $58,506 +1.05%
2025 $817,900 $8,179 707.877 $57,897 -4.13%
2024 $954,100 $8,965 680.847 $60,391 -14.18%
2023 $954,100 $9,541 737.509 $70,366 -5.81%
2022 $954,100 $9,541 782.972 $74,703 -33.59%
2021 $1,338,100 $13,381 840.659 $112,489 +88.23%
2020 $623,300 $6,233 958.77 $59,760 -10.59%
2019 $720,500 $7,205 927.713 $66,842 -4.49%
2018 $720,500 $7,205 971.348 $69,986 +7.38%
2017 $720,500 $7,205 904.629 $65,179 -10.40%
Permits

Permit information for 4100 Duff Place, Seaford, NY

No recently recorded permits for this property.

Neighborhood

Demographics by ZIP code

Total population
21,127
Median age
41.3
Average household income
$195,960
Family households
84.0%
People per household (average)
2.96
Occupied housing units
7,084
Owner-occupied units
93.6%
Median year structure built
1957
Median value mortgaged units
$662,300
Median value unmortgaged units
$640,700

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 4100 Duff Place, Seaford, NY 11783 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Neighbors for 4100 Duff Place, Seaford, NY

975 Hicksville Rd, Massapequa 945 Hicksville Rd, Massapequa 4100 Jerusalem Ave, Massapequa 4 Keats CT, Bethpage 6 Keats CT, Bethpage 850 Hicksville Rd, Seaford 4250 Jerusalem Ave, Massapequa 5 Seaman Neck Rd, Bethpage 3958-3988 Bethpage Tpke, Bethpage 4080 Jerusalem Ave, Massapequa 991 Hicksville Rd, Massapequa 11 Seamans Neck Rd, Bethpage 7 Seamans Neck Rd, Bethpage 8 Keats CT, Bethpage 750 A Hicksville Rd, Seaford 995 Hicksville Rd, Massapequa 9 Seamans Neck Rd, Bethpage 960 Hicksville Rd, Massapequa 1260 Hicksville Rd, Seaford 99 Hicksville Rd, Bethpage

Nearby ZIP codes for 4100 Duff Place, Seaford, NY

11520, Nassau County, NY 11549, Nassau County, NY 11554, Nassau County, NY 11556, Nassau County, NY 11566, Nassau County, NY 11575, Nassau County, NY 11590, Nassau County, NY 11701, Suffolk County, NY 11714, Nassau County, NY 11726, Suffolk County, NY 11735, Nassau County, NY 11735, Suffolk County, NY 11756, Nassau County, NY 11762, Nassau County, NY 11793, Nassau County, NY 11801, Nassau County, NY 11804, Nassau County, NY

Frequently asked questions

What is the year built for 4100 Duff Place, Seaford, NY 11783?

The development at 4100 Duff Place, Seaford, NY 11783 was built in 1977.

What is the market value of 4100 Duff Place, Seaford, NY 11783?

The current market value of 4100 Duff Place, Seaford, NY 11783 is $817,900.

What is the total square footage of 4100 Duff Place, Seaford, NY 11783?

4100 Duff Place, Seaford, NY 11783 has a total of 6,464 square feet.

What is the price per square foot for this property?

$309 per square foot is the price for 4100 Duff Place, Seaford, NY 11783.

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