Suffolk County and Smithtown Town property records for 57 addresses on Oser Ave, Hauppauge, NY · Last verified October 2026
| Properties | 57 |
|---|---|
| Median Sale Price | $5,350,000 |
| Deeds and Mortgages on File | 71 |
| Average Living Area | 30,904 sq ft |
| Median Annual Tax Bill | $54,728 |
| Median Year Built | 1980 |
| Median Ownership Tenure | 17 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
7 Oser Ave |
4.5 acres | $2,800,000 Jul 2000 | $126,868 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
15 Oser Ave |
2 acres | $1,757,000 Nov 2019 | $58,852 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
20 Oser Ave |
4.5 acres | $2,903,650 Nov 2003 | $86,072 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
30 Oser Ave |
4.4 acres | $2,042,014 Nov 2003 | $94,529 2024 | Assessor + 3 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
40 Oser Ave |
3.13 acres | $3,171,544 Nov 2003 | $149,257 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
45 Oser Ave |
7.7 acres | $21,000,000 Apr 2022 | $318,913 2024 | Assessor + 5 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
50 Oser Ave |
4 acres | $1,297,903 Nov 2003 | $99,505 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
60 Oser Ave |
3.26 acres | $1,104,982 Nov 2003 | $94,529 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
63 Oser Ave |
1.2 acres | $1,368,968 Nov 2003 | $41,046 2024 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
65 Oser Ave |
1.2 acres | $824,024 Nov 2003 | $37,314 2024 | Assessor + 3 Documents Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
70 Oser Ave |
1 acre | $37,936 2024 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
73 Oser Ave |
1.2 acres | $1,041,739 Nov 2003 | $34,827 2024 | Assessor + 1 Document Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
75 Oser Ave |
1.86 acres | $2,900,000 Feb 2009 | $59,703 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
77 Oser Ave |
2 acres | $6,493 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
80 Oser Ave |
1.05 acres | $664,262 Nov 2003 | $41,046 2024 | Assessor + 3 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
90 Oser Ave |
3.7 acres | $862,897 Nov 2003 | $62,190 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
95 Oser Ave |
1.51 acres | $2,030,000 Sep 2017 | $79,581 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
100 Oser Ave |
2.5 acres | $87,066 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
110 Oser Ave |
61,000 sqft 4 acres | $1,000,000 Dec 2012 | $74 2024 | Assessor + 3 Documents Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
129 Oser Ave |
20,700 sqft 1.66 acres | $2,700,000 Nov 2019 | $65,399 2024 | Assessor + 2 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
135 Oser Ave |
2.5 acres | $9,500,000 Sep 2023 | $80,848 2024 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
145 Oser Ave |
72,090 sqft built 1973 · 5.4 acres | $5,250,000 Mar 2014 | $133 2024 | Assessor + 2 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
160 Oser Ave |
31,500 sqft 3.51 acres | $6,600,000 May 2022 | $119,423 2024 | Assessor + 2 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
165 Oser Ave |
5.66 acres | $131,250 Feb 2018 | $49 2024 | Assessor + 2 Documents Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
180 Oser Ave |
3.36 acres | $551,000 Oct 2025 | $144,282 2024 | Assessor + 7 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
185 Oser Ave |
2 acres | $1,922,336 Nov 2003 | $69,653 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
195 Oser Ave |
19,608 sqft built 1977 · 1.5 acres | $2,000,000 Mar 2009 | $62,601 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
200 Oser Ave |
1.16 acres | $3,500,000 May 2024 | $59,205 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
205 Oser Ave |
1.5 acres | $2,400,000 Oct 2005 | $54,728 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
210 Oser Ave |
1 acre | $34,827 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
215 Oser Ave |
10,000 sqft 1 acre | $1,000,000 Feb 2013 | $30,196 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
235 Oser Ave |
1.7 acres | $40,710 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
245 Oser Ave |
2 acres | $2,712,500 Oct 2011 | $65 2024 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
255 Oser Ave |
1.13 acres | $1,708,000 Jun 2014 | $42 2024 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
265 Oser Ave |
1 acre | $3,975,000 Oct 2022 | $42,290 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
275 Oser Ave |
1.1 acres | $1,245,000 Jan 2002 | $37,510 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
280 Oser Ave |
1.86 acres | $3,800,000 Jul 2017 | $67,166 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
285 Oser Ave |
1.1 acres | $910,000 Aug 1996 | $53,484 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
290 Oser Ave |
1.3 acres | $2,500,000 Feb 2017 | $47,265 2024 | Assessor + 2 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
295 Oser Ave |
1.2 acres | $1,000,000 May 2001 | $46,021 2024 | Assessor + 4 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
305 Oser Ave |
1.7 acres | $84,579 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
310 Oser Ave |
22,000 sqft built 1980 · 1.45 acres | $2,400,000 Jul 2014 | $33 2024 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
315 Oser Ave |
30,350 sqft built 1979 · 2 acres | $265,000 Sep 2007 | $59,703 2024 | Assessor + 3 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
320 Oser Ave |
1.6 acres | $4,775,000 Mar 2026 | $47,016 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
325 Oser Ave |
1 acre | $730,000 Mar 1994 | $47,028 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
330 Oser Ave |
8 acres | $379 2024 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
335 Oser Ave |
1.1 acres | $750,000 Feb 1996 | $48,248 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
345 Oser Ave |
30,445 sqft built 1980 · 1.7 acres | $3,740,000 Jul 2017 | $60,014 2024 | Assessor + 3 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
355 Oser Ave |
1 acre | — Aug 1998 | $43,547 2024 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
360 Oser Ave |
1.25 acres | $1,157,164 Nov 2003 | $51,581 2024 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
375 Oser Ave |
1.16 acres | $1,133,911 Nov 2003 | $47,265 2024 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
380 Oser Ave |
20,160 sqft built 1980 · 2 acres | $5,350,000 May 2022 | $64,839 2024 | Assessor + 3 Documents Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
385 Oser Ave |
25,000 sqft 2 acres | $3,375,000 Dec 2017 | $57,215 2024 | Assessor + 2 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
390 Oser Ave |
28,000 sqft built 1980 · 1.6 acres | $2,700,000 Sep 2005 | $52,240 2024 | Assessor + 2 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
395 Oser Ave |
6.1 acres | $11,550,000 Sep 2025 | $182,641 2024 | Assessor + 2 Documents Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
400 Oser Ave |
9.45 acres | $8,518,460 Nov 2003 | $351,998 2024 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
425 Oser Ave |
7.15 acres | $247,393 2024 | Assessor Updated Aug 2026 | Owner on File |