Prospect Ave, Sea Cliff, NY Property Records

Nassau County and Oyster Bay Town property records for 80 addresses on Prospect Ave, Sea Cliff, NY · Last verified October 2026

Prospect Ave Highlights

Properties 80
Median Sale Price $865,000
Deeds and Mortgages on File 85
Median Price per Sqft $541
Owner Occupied 89%
Median Annual Tax Bill $15,400
Median Year Built 1932
Median Ownership Tenure 10 years

Properties on Prospect Ave

Address Details Last Sale Tax Bill Records Owner

1 Prospect Ave

2 ba · 1,704 sqft built 1868 · 0.244 acres $635,000 Aug 2019 $864 2025 Assessor + 1 Document Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

2 Prospect Ave

3 ba · 1,932 sqft built 1952 · 0.729 acres $855,000 Dec 2018 $1,028 2025 Assessor + 1 Document Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

3 Prospect Ave

2 ba · 1,008 sqft built 1920 · 0.114 acres $122,500 Oct 2000 $6,324 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

5 Prospect Ave

3 bd · 2.5 ba · 2,100 sqft built 1958 · 0.114 acres $755,000 Oct 2014 $15,482 2025 Assessor + 3 Documents Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

6 Prospect Ave

4 ba · 3,329 sqft built 2008 · 0.453 acres $1,350,000 Jul 2017 $1,294 2025 Assessor + 2 Documents Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

7 Prospect Ave

1 ba · 452 sqft built 1920 · 0.132 acres $9,293 2025 Assessor Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

9 Prospect Ave

2.5 ba · 1,614 sqft built 1920 · 0.127 acres $13,991 2025 Assessor Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

11 Prospect Ave

3 ba · 2,220 sqft built 1916 · 0.086 acres $350,000 May 1995 $20,036 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

14 Prospect Ave

2.5 ba · 1,494 sqft built 1982 · 0.227 acres $870,000 Mar 2020 $967 2025 Assessor + 2 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

16 Prospect Ave

4.5 ba · 3,400 sqft built 1973 · 0.223 acres $450,000 Sep 1996 $978 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

17 Prospect Ave

5 bd · 3.5 ba · 2,530 sqft built 1924 · 0.333 acres $1,274,000 May 2015 $23,472 2025 Assessor + 2 Documents Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

18 Prospect Ave

3.5 ba · 2,209 sqft built 1935 · 0.181 acres $825,000 Sep 2018 $881 2025 Assessor + 2 Documents Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

20 Prospect Ave

2 ba · 2,648 sqft built 1903 · 0.293 acres $885 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

21 Prospect Ave

4 bd · 5 ba · 3,938 sqft built 1932 · 0.323 acres $1,225,000 Nov 2019 $23,514 2025 Assessor + 1 Document Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

23 Prospect Ave

4 ba · 1,818 sqft built 1932 · 0.094 acres $795,000 Jul 2019 $15,772 2025 Assessor + 3 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

24 Prospect Ave

2 ba · 1,989 sqft built 1972 · 0.158 acres $600,000 Mar 2026 $12,005 2025 Assessor + 4 Documents Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

27 Prospect Ave

3 ba · 1,350 sqft built 1958 · 0.191 acres $740,000 Mar 2026 $14,116 2025 Assessor + 1 Document Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

29 Prospect Ave

3 ba · 1,924 sqft built 1958 · 0.189 acres $975,000 Jun 2022 $15,648 2025 Assessor + 2 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

30 Prospect Ave

2 ba · 2,328 sqft built 1928 · 0.441 acres $12,186 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

31 Prospect Ave

2 ba · 1,300 sqft built 1958 · 0.161 acres $264,000 Mar 1996 $11,797 2025 Assessor Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

32 Prospect Ave

2.5 ba · 2,216 sqft built 1960 · 0.279 acres $16,283 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

37 Prospect Ave

2 ba · 1,834 sqft built 1908 · 0.172 acres $750,000 Jan 2025 $14,427 2025 Assessor + 1 Document Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

38 Prospect Ave

2 ba · 2,286 sqft built 1952 · 0.481 acres $1,950,000 Sep 2025 $24,071 2025 Assessor + 2 Documents Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

40 Prospect Ave

3 ba · 2,873 sqft built 1910 · 0.399 acres $22,270 2025 Assessor Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

42 Prospect Ave

4.5 ba · 5,580 sqft built 1908 · 0.586 acres $1,800,000 Aug 2005 $23,792 2025 Assessor + 1 Document Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

43 Prospect Ave

2.5 ba · 1,626 sqft built 1910 · 0.118 acres $280,000 Nov 1995 $13,516 2025 Assessor Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

46 Prospect Ave

1 ba · 961 sqft built 2017 · 0.27 acres $425,000 Jan 2017 $16,641 2025 Assessor + 1 Document Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

48 Prospect Ave

4.5 ba · 2,828 sqft built 2019 · 0.502 acres $975,000 Jan 2017 $18,235 2025 Assessor + 2 Documents Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

52 Prospect Ave

2 bd · 2 ba · 14,206 sqft built 1899 · 0.378 acres — Oct 1997 $29,787 2025 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

54 Prospect Ave

4 ba · 1,972 sqft built 1898 · 0.055 acres $819,000 Jul 2005 $15,357 2025 Assessor Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

58 Prospect Ave

3 ba · 2,440 sqft built 1908 · 0.297 acres $330,000 Apr 1995 $23,512 2025 Assessor Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

74 Prospect Ave

3 ba · 4,002 sqft built 1898 · 0.302 acres $21,237 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

75 Prospect Ave

3 ba · 2,711 sqft built 1938 · 0.265 acres $525,000 Jun 2001 $16,905 2025 Assessor Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

76 Prospect Ave

4 bd · 4.5 ba · 3,328 sqft built 2009 · 0.18 acres $2,315,000 Aug 2011 $25,397 2025 Assessor Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

77 Prospect Ave

2 ba · 1,609 sqft built 1933 · 0.016 acres $195,000 Apr 1995 $12,418 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

88 Prospect Ave

2.5 ba · 2,219 sqft built 2016 · 0.391 acres $1,550,000 Aug 2014 $17,594 2025 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

98 Prospect Ave

3 ba · 2,202 sqft built 1908 · 0.314 acres $25,799 2025 Assessor Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

110 Prospect Ave

3.5 ba · 2,993 sqft built 1958 · 0.345 acres $1,750,000 Sep 2010 $26,225 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

120 Prospect Ave

2.5 ba · 3,384 sqft built 1928 · 0.371 acres $726,000 Nov 2003 $29,910 2025 Assessor Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

137 Prospect Ave

4 bd · 2.5 ba · 2,243 sqft built 1877 · 0.333 acres $950,000 Jan 2014 $17,842 2025 Assessor Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

140 Prospect Ave

2 ba · 1,215 sqft built 1940 · 0.067 acres $9,768 2025 Assessor + 1 Document Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

154 Prospect Ave

2.5 ba · 2,498 sqft built 2002 · 0.151 acres $820,000 Dec 2003 $20,015 2025 Assessor + 1 Document Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

158 Prospect Ave

2.5 ba · 1,918 sqft built 2002 · 0.111 acres $780,000 Nov 2019 $16,745 2025 Assessor + 1 Document Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

168 Prospect Ave

3.5 ba · 2,247 sqft built 1898 · 0.215 acres $1,350,000 Sep 2021 $18,546 2025 Assessor + 1 Document Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

176 Prospect Ave

2.5 ba · 3,163 sqft built 1886 · 0.218 acres $725,000 Nov 2015 $18,525 2025 Assessor + 1 Document Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

177 Prospect Ave

1 ba · 1,384 sqft built 1883 · 0.139 acres $8,340 2025 Assessor + 1 Document Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

187 Prospect Ave

2 ba · 935 sqft built 1916 · 0.061 acres $635,000 Nov 2022 $9,459 2025 Assessor + 2 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

188 Prospect Ave

4 bd · 2 ba · 2,589 sqft built 1878 · 0.165 acres $505,000 Mar 2012 $23,016 2025 Assessor Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

191 Prospect Ave

3 bd · 2 ba · 1,112 sqft built 1888 · 0.089 acres $625,000 Feb 2017 $10,452 2025 Assessor + 5 Documents Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

195 Prospect Ave

2.5 ba · 1,494 sqft built 1892 · 0.11 acres $150,000 May 2016 $11,860 2025 Assessor Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

199 Prospect Ave

4 bd · 2.5 ba · 1,606 sqft built 1892 · 0.129 acres $870,000 Nov 2025 $12,356 2025 Assessor + 2 Documents Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

200 Prospect Ave

2.5 ba · 1,549 sqft built 1956 · 0.209 acres $224,000 Apr 1999 $11,259 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

203 Prospect Ave

2 ba · 977 sqft built 1888 · 0.094 acres $570,000 Dec 2020 $9,231 2025 Assessor + 2 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

207 Prospect Ave

2.5 ba · 1,447 sqft built 1873 · 0.193 acres $699,000 Jul 2015 $15,400 2025 Assessor + 2 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

214 Prospect Ave

1.5 ba · 1,681 sqft built 1898 · 0.107 acres $575,000 Jan 2002 $1,574 2025 Assessor + 1 Document Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

222 Prospect Ave

2.5 ba · 2,543 sqft built 1898 · 0.185 acres $810,000 Nov 2020 $16,497 2025 Assessor + 3 Documents Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

224 Prospect Ave

3.5 ba · 2,187 sqft built 1952 · 0.536 acres $822,500 Jan 2020 $17,159 2025 Assessor + 2 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

227 Prospect Ave

2 ba · 2,124 sqft built 1908 · 0.417 acres $650,000 Feb 2025 $13,080 2025 Assessor + 1 Document Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

233 Prospect Ave

2.5 ba · 2,846 sqft built 1981 · 0.26 acres $865,000 Jul 2021 $17,552 2025 Assessor + 2 Documents Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

239 Prospect Ave

1 ba · 2,378 sqft built 1890 · 0.401 acres $14,632 2025 Assessor + 1 Document Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

280 Prospect Ave

5.5 ba · 5,074 sqft built 1926 · 1.98 acres $3,205,000 Apr 2004 $59,613 2025 Assessor Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

285 Prospect Ave

2 ba · 1,543 sqft built 1903 · 0.482 acres $520,000 Apr 2002 $13,183 2025 Assessor + 1 Document Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

290 Prospect Ave

4.5 ba · 5,073 sqft built 1888 · 1.44 acres $3,225,000 Apr 2019 $57,634 2025 Assessor + 1 Document Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

291 Prospect Ave

2.5 ba · 2,016 sqft built 1898 · 0.462 acres $1,769,000 Aug 2026 $14,045 2026 Assessor + 1 Document Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

292 Prospect Ave

1.5 ba · 1,627 sqft built 1962 · 0.259 acres $485,000 Feb 2005 $15,027 2025 Assessor Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

294 Prospect Ave

1.5 ba · 1,627 sqft built 1962 · 0.191 acres $11,484 2025 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

296 Prospect Ave

1.5 ba · 1,731 sqft built 1960 · 0.196 acres $700,000 Oct 2020 $13,053 2025 Assessor + 1 Document Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

298 Prospect Ave

1.5 ba · 1,627 sqft built 1960 · 0.208 acres $424,000 Oct 2009 $15,958 2025 Assessor Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

299 Prospect Ave

3.5 ba · 2,058 sqft built 1861 · 0.809 acres $1,160,000 Mar 2024 $16,466 2025 Assessor + 3 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

300 Prospect Ave

2.5 ba · 1,493 sqft built 1960 · 0.212 acres $687,000 Jun 2021 $12,046 2025 Assessor + 2 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

301 Prospect Ave

3.5 ba · 2,342 sqft built 2018 · 0.239 acres $1,450,000 Nov 2022 $9,314 2025 Assessor + 5 Documents Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

303 Prospect Ave

2.5 ba · 1,968 sqft built 1975 · 0.258 acres $735,000 May 2005 $14,509 2025 Assessor Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

304 Prospect Ave

3 bd · 3.5 ba · 6,548 sqft built 2000 · 0.631 acres $3,800,000 Sep 2016 $46,758 2025 Assessor + 1 Document Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

306 Prospect Ave

3 ba · 2,401 sqft built 1960 · 0.401 acres $540,000 Oct 1998 $26,369 2025 Assessor + 1 Document Updated Jun 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

325 Prospect Ave

$6,525 2025 Assessor Updated Jul 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

333 Prospect Ave

2 ba · 1,973 sqft built 1966 · 0.306 acres $333,000 Dec 1998 $16,151 2026 Assessor + 2 Documents Updated Sep 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

335 Prospect Ave

3.5 ba · 2,596 sqft built 1954 · 1.55 acres $1,365,000 Jul 2020 $27,136 2025 Assessor + 3 Documents Updated Oct 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

337 Prospect Ave

3 ba · 2,882 sqft built 1961 · 0.462 acres $1,270,000 Mar 2019 $19,374 2025 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

401 Prospect Ave

3 bd · 3 ba · 7,431 sqft built 1898 · 0.295 acres $505,000 Feb 2000 $15,340 2025 Assessor + 1 Document Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

411 Prospect Ave

1 ba · 1,389 sqft built 1958 · 0.211 acres $515,000 Feb 2008 $12,625 2025 Assessor Updated Jun 2026 Owner on File Owner Occupied

Property Records in Nearby Streets