21 CORNELL ST
Valuation
Tax & Assessment
Climate Risk
Scores 0–100; higher = greater projected risk.
Property Facts
Transaction History(3)
Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
District: Islip Union Free School District
Neighborhood · ZIP 11751These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.
Index scale: 100 = US average (tick). Lower is better.
Owner Tools
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
How this home compares
21 Cornell St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.
How it measures up in Islip 11751
The dot is this home. The mark in the middle is the typical home in Islip 11751.
Bigger than 49% of homes nearby
| Measure | This home | Islip | Islip 11751 | Suffolk County |
|---|---|---|---|---|
| Lot sizebigger than | 0.23 ac | 43% of homes | 49% of homes | 38% of homes |
More homes on Cornell St
- 16 Cornell St2,209 ft² · Sold $360K · Aug 2019
- 15 Cornell St$546K1,152 ft² · Sold $293K · Jun 2019
- 41 Cornell St$601K0.17 ac · Sold $248K · Jun 2014
- 31 Cornell St$595K0.11 ac · Sold $358K · May 2009
- 39 Cornell St$665K0.17 ac · Sold $410K · Jul 2006
- 14 Cornell St0.24 ac · Sold $425K · Sep 2004
- 19 Cornell St$604K0.23 ac · Sold $324K · May 2004
- 34 Cornell St$599K0.23 ac · Sold $227K · Jul 2001
- 30 Cornell St$598K0.23 ac · Sold $245K · May 1999
- 33 Cornell St$626K0.17 ac · Sold Jan 1900
Closest homes
- 37 Freeman Ave28 ft · 2,772 ft² · Sold $480K · Apr 2018
- 45 Freeman Ave$723K124 ft · 2,772 ft² · Sold $205K · Sep 2002
- 25 Freeman Ave$500K125 ft · 1,006 ft² · Sold Jan 1900
- 19 Cornell St$604K136 ft · 0.23 ac · Sold $324K · May 2004
- 66 Dartmouth St$573K164 ft · 0.11 ac · Sold $380K · Jan 2021
- 36 Freeman Ave$481K166 ft · 990 ft² · Sold Jan 1900
- 15 Freeman Ave$555K225 ft · 0.23 ac
- 46 Freeman Ave$530K206 ft · 1,294 ft² · Sold $463K · Dec 2020
More homes in Islip 11751
- 68 E Bayberry Rd$1.9M1.32 ac · Sold $1.9M · Aug 2026
- 234 Cedar Ave$889K0.46 ac · Sold $1.1M · Aug 2026
- 816 Main St$639K1,132 ft² · Sold $630K · Aug 2026
- 36 Pine St$631K1,008 ft² · Sold $625K · Jul 2026
- 36 Wingam Dr$867K2,331 ft² · Sold $842K · Jul 2026
- 90 Willow Ave$725K2,040 ft² · Sold $720K · Jul 2026
- 149 Union Ave$690K1,539 ft² · Sold $685K · Jul 2026
- 191 Smith Ave$638K1,112 ft² · Sold $634K · Jul 2026
- 42 Richmond St$553K0.17 ac · Sold $550K · Jul 2026
- 45 Roosevelt Ave0.48 ac · Sold $625K · Jul 2026
- 17 Sutton Pl$670K2,178 ft² · Sold $664K · Jun 2026
- 41 Richmond St$757K0.19 ac · Sold $750K · Jun 2026
Assigned schools
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