Commercial Real Estate Market in Seaford, NY
Updated monthly: sale, lease, property records, location trend, and more… · Last update: October 31
15 active listings and 236 off-market properties in Seaford, NY. Commercial property asks $837/SF to buy and $17.26/SF/Yr to lease.
Market Trends
Seaford, NY spans 3.5 square miles in Nassau County, New York. Figures below refresh monthly; last updated 31 October 2026.
Office
Office vacancy in Seaford, NY runs 19.9% across the Northeast region in 2025, up from 13.1% in 2019.
Vacancy Rate % in Northeast region
Retail
Retail vacancy in Seaford, NY runs 6% across the Northeast region in 2025, little changed from 6% in 2019. Down from a 2020 peak of 7.1%.
Vacancy Rate % in Northeast region
Industrial
Industrial vacancy in Seaford, NY runs 7.6% across the Northeast region in 2025, up from 5.4% in 2019. Nearly 2.4x the 2021 low of 3.2%.
Vacancy Rate % in Northeast region
Multifamily
Multifamily vacancy in Seaford, NY runs 5.6% across the Northeast region in 2025, up from 4% in 2022.
Vacancy Rate % in Northeast region
Market overview
Demographics & Economy
Seaford, NY has 21,299 residents in 7,320 households. Density runs 6,013 people per square mile. Median household income here is $164,128 and median gross rent $2,806 a month.
21,299
Population
7,320
Households
2.9
Avg Household Size
43
Median Age
46%
College-Educated
96%
High-School Grad
3.5 sq mi
ZIP Area
6,013
Density / Sq Mi
$164,128
Median Household Income
$74,693
Median Earnings
$2,806
Median Rent
$626,700
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| North Wantagh | — | — |
| East Massapequa | — | $36.17 |
| North Bellmore | — | — |
| Amityville | — | $31.20 |
Commercial property in Seaford, NY asks $837/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Seaford?
Commercial property in Seaford, NY asks an average of $837 per square foot. The 6 most recent recorded sales traded at a median of $536/SF, so asking sits 56% above the achieved median.
How much does it cost to lease commercial space in Seaford?
Asking lease rates in Seaford, NY average $17.26 per square foot per year.
Where does Realmo's Seaford market data come from?
Realmo compiles Seaford, NY figures from 8 recent recorded sales, 10 active sale listings, 5 active lease listings, 236 tracked off-market properties. Sale and lease figures refresh monthly; vacancy annually. Last updated 31 October 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 10 active for-sale and 5 active for-lease listings in Seaford, NY. These are ASKING figures from live listings, not closed-transaction prices, and a segment carried by a handful of listings reads as indicative rather than an average.
- Vacancy rates
- Published per-sector market series, taken at the metro level where one exists and otherwise at the Census-region level — a chart reading "in <region> region" is a regional number, not this city's.
- Refresh
- The monthly aggregates close at the end of the previous month, so 31 October 2026 — not today — is the honest last update.
- Known limitations
- office vacancy is reported at Northeast region level, retail vacancy is reported at Northeast region level and industrial vacancy is reported at Northeast region level.
- Coverage
- Metrics below the 10-observation threshold fall back one geographic level. The geography used is named on each figure.
Compiled by the Realmo Data team · reviewed 31 October 2026 · How Realmo checks market page data · Report a data issue
