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20 Seaford Avenue, Mastic, NY 11950 Property Information

20 Seaford Avenue, Mastic, NY 11950 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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20 Seaford Avenue, Mastic, NY 11950
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Address

Primary address 20 Seaford Avenue, Mastic
Zip code 11950
County Suffolk
Municipality Brookhaven
Parcel ID 4600400

Sales & Tax Overview for 20 Seaford Avenue, Mastic

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Current property tax $4,783

Lot & Building Information for 20 Seaford Avenue, Mastic

Building sqft 2,090
Building class One Family Year-Round Residence (210)
Acreage 0.23
Year built 1976
Rooms 9
Bedrooms 5
Bathrooms 2
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Zoning, Use & Area Overview

Walk Score
52 /100. Somewhat Walkable
Transit Score
0 /100. Minimal Transit
Bike Score
41 /100. Somewhat Bikeable

Zoning district
School district William Floyd

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 20 Seaford Avenue, Mastic

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  • • Improvements for 20 Seaford Avenue, Mastic , including their type, square footage, grade and when they were built.
  • • Development maps such as planimetric, zoning, land use and urban landscape maps (building age and stories).
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About 20 Seaford Avenue, Mastic

What is the year built & the total sq. ft. for 20 Seaford Avenue, Mastic, NY 11950?

20 Seaford Avenue, Mastic, NY 11950 was built in 1976 and has a total of 2,090 square feet.

What is the assessed value of 20 Seaford Avenue, Mastic, NY 11950 and the property tax paid?

Assessed at $1,845, the tax amount paid for 20 Seaford Avenue, Mastic, NY 11950 is $6,824.

Ownership Information

View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.

Real Estate Reports:
How to Contact Property Owners: Cold Calling Scripts, Email Templates & Outreach Tips 
Laura Pop-Badiu, Jul 29, 2026 How to Contact Property Owners: Cold Calling Scripts, Email Templates & Outreach Tips 
When it comes to efficiently contacting property owners, the challenge is twofold: First, you need to identify the right owner. Then, you need to reach that owner through the appropriate channel with the right message. Enhanced by effective follow-up tips and tactics, this guide is particularly useful for investors, agents and other real estate professionals who need an effective outreach process.
Brooklyn Emerges as NYC’s Coworking Growth Engine, Manhattan Rents Cross $100 in the Plaza District 
Lucian Alixandrescu, Jul 28, 2026 Brooklyn Emerges as NYC’s Coworking Growth Engine, Manhattan Rents Cross $100 in the Plaza District 
New York City’s office market continued to lead the U.S. in Q2, but internal shifts were most visible in the flex office market. Brooklyn’s coworking inventory grew 6.2% Q-o-Q even as Manhattan’s supply retreated. At the same time, Brooklyn’s asking rents for traditional office leases climbed more than twice as fast as the national average.
Prices Rise in 32 of NYC’s Leading Neighborhoods as City and Manhattan Hit Record Highs
Eliza Theiss, Jul 22, 2026 Prices Rise in 32 of NYC’s Leading Neighborhoods as City and Manhattan Hit Record Highs
Q2 2026 saw NYC and Manhattan reach historic highs, with Brooklyn and Queens marking close to new records as well. Meanwhile, Hudson Yards remained at the top, Central Midtown posted its highest price ever and Carroll Gardens marked its third consecutive quarter over $2 million
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Past Sales & Property History for 20 Seaford Avenue, Mastic

Create a free account to view the complete sales history for 20 Seaford Avenue, Mastic, including title documents, transfer conditions, mortgages and liens.

No recorded sales for this property.

More about Suffolk County Property Records

Title Documents for 20 Seaford Avenue, Mastic

Data not available for this property.

Property Taxes for 20 Seaford Avenue, Mastic

Access detailed property tax data for 20 Seaford Avenue, Mastic, NY 11950. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year 2025-2026
Base tax $6,825
Current property tax $4,783
Market value $348,113
Assessed value $1,845

More about Suffolk County Property Taxes

Assessment History for 20 Seaford Avenue, Mastic

Here's the assessment & property tax history for 20 Seaford Avenue, Mastic, including the evolution of the total tax rate and corresponding property tax.

Year Market value Assessment value Total tax rate Property tax Year over year change
2025-2026 $348,113 $1,845 369.908 $6,825 +1.72%
2024-2025 $348,113 $1,845 363.67 $6,710 +2.08%
2023-2024 $341,667 $1,845 356.252 $6,573 -12.23%
2022-2023 $297,581 $1,845 405.87 $7,488 -3.28%
2021-2022 $249,324 $1,845 419.634 $7,742 +0.99%
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Permits for 20 Seaford Avenue, Mastic

The complete history of permits filed for 20 Seaford Avenue, Mastic, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

Data not available for this property.

Brookhaven residential market stats

Median Sale Price
$575,000
4.5% YoY
Median Price/Sqft
$348
2.4% YoY
Suffolk County Median Sale Price
$677,000
5.9% YoY

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 County.

Risk

Create a free account to unlock extended information for 20 Seaford Avenue, Mastic, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).

FEMA flood zone(s) X (See more on map)

Transportation

Access the detailed traffic volume map for 20 Seaford Avenue, Mastic to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

View daily traffic map

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Moriches Elementary School 5 Public K-5 822 1.29
William Floyd Learning Center NR Public K-5 68 1.58
William Floyd Elementary School 4 Public K-5 742 1.58
John S Hobart Elementary School 3 Public K-5 798 1.68
Nathaniel Woodhull Elementary School 6 Public K-5 703 1.91
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Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
William Floyd Middle School 3 Public 6-8 1,053 1.83
Eastport South Manor Junior Senior High School 5 Public 7-12 1,530 2.16
William Paca Middle School 4 Public 6-8 1,009 2.19
Center Moriches Middle School 3 Public 6-8 325 2.44
Our Lady Queen Of Apostles Reg Catholic School NR Private PK-8 153 3.49
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Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
William Floyd High School 5 Public 9-12 3,013 1.99
Eastport South Manor Junior Senior High School 5 Public 7-12 1,530 2.16
Center Moriches High School 8 Public 9-12 556 2.44
Leonard E Burket Christian School NR Private PK-12 77 3.61
Bellport Senior High School 5 Public 9-12 1,392 4.42
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Data provided by GreatSchools.org © 2025. All rights reserved.

Neighbors for 20 Seaford Avenue, Mastic

Here are the neighbors for 20 Seaford Avenue, Mastic.

Address Square feet Purchase date Purchase price
6 Miramar St, Mastic 1,196 08/04/2000 $108,000
90 Lambert Rd, Mastic 06/05/2023 $505,000
12 Fairview St, Mastic 804 06/30/2021 $342,500
9 Seaford Ave, Mastic 1,024
14 Milford Ave, Mastic 12/15/2021 $425,000
2 Miramar St, Mastic 1,154 11/24/2004
4 Milford Ave, Mastic 01/14/2003
10 Milford Ave, Mastic 05/11/2012 $127,200
1 Miramar St, Mastic 1,189 05/05/2017 $249,000
5 Miramar St, Mastic 1,222 02/25/2004 $228,000
10 Seaford Ave, Mastic 2,160 06/27/2003 $126,000
6 Seaford Ave, Mastic 1,150 06/16/2021 $335,000
4 Seaford Ave, Mastic 1,080 08/21/2001 $138,000
15 Boonar St, Mastic 2,948 02/29/2008
18 Milford Ave, Mastic 04/14/2006 $245,000
24 Seaford Ave, Mastic 1,040
80 Lambert Ave, Mastic 10/10/2018 $262,350
86 Lambert Ave, Mastic 1,208 02/05/2004 $217,300
4 Miramar St, Mastic 1,165 11/06/2000 $105,900
84 Lambert Ave, Mastic 1,792 10/05/2023 $510,000
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Nearby ZIP Codes for 20 Seaford Avenue, Mastic

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