Foster Ave, Sayville, NY Property Records

Suffolk County, Islip Town and Southampton Town property records for 111 addresses on Foster Ave, Sayville, NY · Last verified October 2026

Foster Ave Highlights

Properties 125
Median Sale Price $760,000
Deeds and Mortgages on File 199
Median Price per Sqft $381
Owner Occupied 59%
Median Annual Tax Bill $12,228
Median Year Built 1991
Median Ownership Tenure 12 years

Properties on Foster Ave

Address Details Last Sale Tax Bill Records Owner

15 Foster Ave

0.669 acres $1,030,000 Sep 2025 Assessor + 2 Documents Updated Dec 2025 Owner on File
Address Details Last Sale Tax Bill Records Owner

16 Foster Ave

0.65 acres $1,400,000 Jul 2023 Assessor + 2 Documents Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

17 Foster Ave

4 bd · 3 ba · 2,338 sqft built 2004 · 0.319 acres $616,750 Feb 2020 $7,890 2024 Assessor + 3 Documents Updated Sep 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

18 Foster Ave

2 bd · 1 ba · 972 sqft built 1991 · 0.319 acres $335,000 Jan 2010 Assessor + 1 Document Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

23 Foster Ave

0.25 acres Assessor Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

27 Foster Ave

2,304 sqft built 1978 · 0.36 acres $1,300,000 Aug 2023 Assessor + 2 Documents Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

28 Foster Ave

3 bd · 3 ba · 2,017 sqft built 1997 · 0.319 acres $770,000 Nov 2021 $7,203 2024 Assessor + 1 Document Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

29 Foster Ave

2 bd · 1 ba · 616 sqft built 1990 · 0.169 acres $242,000 Jul 2016 Assessor Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

32 Foster Ave

0.239 acres $325,000 Sep 2022 Assessor + 4 Documents Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

33 Foster Ave

320 sqft 0.23 acres $380,000 Feb 2020 Assessor + 1 Document Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

40 Foster Ave

2 bd · 1 ba · 816 sqft built 1991 · 0.289 acres $59,000 Aug 2000 Assessor Updated Oct 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

41-45 Foster Ave

0.28 acres $850,000 Dec 2022 Assessor + 1 Document Updated Mar 2024 Owner on File
Address Details Last Sale Tax Bill Records Owner

43 Foster Ave

9.1 acres Assessor Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

44 Foster Ave

4 bd · 2 ba · 1,312 sqft built 1991 · 0.239 acres $347,000 Oct 2013 Assessor + 1 Document Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

45 Foster Ave

3 bd · 2 ba · 1,220 sqft built 1991 · 0.31 acres Assessor + 1 Document Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

48 Foster Ave

1 bd · 1 ba · 855 sqft built 1991 · 0.189 acres $760,000 May 2025 $5,699 2024 Assessor + 2 Documents Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

51 Foster Ave

3 bd · 2 ba · 1,216 sqft built 1999 · 0.46 acres $895,000 Mar 2025 $8,147 2024 Assessor + 1 Document Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

52 Foster Ave

12,748 sqft built 1985 · 1.8 acres Assessor Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

53 Foster Ave

3 bd · 2 ba · 2,113 sqft built 1991 · 0.9 acres $1,000,000 Dec 2023 Assessor + 1 Document Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

54 Foster Ave

3 bd · 1 ba · 2,934 sqft built 1991 · 0.9 acres $889,000 Dec 2022 $6,281 2024 Assessor + 2 Documents Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

56 Foster Ave

2 bd · 2 ba · 2,038 sqft built 1991 · 0.31 acres $667,500 Nov 2024 Assessor Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

61 Foster Ave

5,345 sqft built 1980 · 0.38 acres $325,000 Jun 1998 Assessor + 1 Document Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

66 Foster Ave

3 bd · 1 ba · 1,270 sqft built 1991 · 0.4 acres Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

67 Foster Ave

4 bd · 2 ba · 1,596 sqft built 1993 · 0.36 acres $250 Sep 2000 $7,544 2024 Assessor + 1 Document Updated Sep 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

68 Foster Ave

15 units Built 2015 $850,000 Mar 2026
Address Details Last Sale Tax Bill Records Owner

72 Foster Ave

4,370 sqft built 1900 · 0.21 acres $520,000 Aug 2017 $16,501 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

73 Foster Ave

4 bd · 2,117 sqft built 2016 · 0.36 acres $600,000 Jul 2015 Assessor Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

75 Foster Ave

3,051 sqft built 1906 · 0.319 acres $155,000 Jun 1999 $14,160 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

76 Foster Ave

0.219 acres $115,000 Nov 1997 $8,824 2024 Assessor + 3 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

79 Foster Ave

0.319 acres $11,033 2024 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

86 Foster Ave

0.28 acres $826,500 May 2025 Assessor Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

87 Foster Ave

0.31 acres $485,000 May 2016 $16,014 2024 Assessor + 4 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

91 Foster Ave

2,022 sqft built 1877 · 0.31 acres $229,000 Sep 2000 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

92 Foster Ave

0.56 acres $145,000 Sep 1994 $10,812 2024 Assessor + 1 Document Updated Sep 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

97 Foster Ave

1,702 sqft built 1900 · 0.35 acres $177,500 Nov 1998 $11,597 2024 Assessor + 3 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

107 Foster Ave

0.68 acres $580,000 May 2004 $17,189 2024 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

116 Foster Ave

2,103 sqft built 1887 · 0.339 acres $535,000 Sep 2023 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

120 Foster Ave

0.239 acres Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

126 Foster Ave

0.289 acres $159,000 Jul 1999 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

130 Foster Ave

0.289 acres $500,000 Sep 2015 $12,543 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

134 Foster Ave

1,656 sqft built 1900 · 0.169 acres $582,000 Jan 2022 $10,966 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

137 Foster Ave

0.18 acres $114,500 Jan 1999 Assessor Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

140 Foster Ave

0.48 acres Assessor Updated Oct 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

143 Foster Ave

0.2 acres $159,000 Dec 1997 $9,336 2024 Assessor Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

146 Foster Ave

0.489 acres $309,000 Apr 2003 $17,906 2024 Assessor + 3 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

151 Foster Ave

0.269 acres $548,000 Feb 2016 $15,985 2024 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

154 Foster Ave

0.33 acres $463,000 Jan 2010 $16,104 2024 Assessor Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

155 Foster Ave

0.269 acres $410,000 May 2008 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

159 Foster Ave

0.25 acres Assessor + 1 Document Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

160 Foster Ave

1,537 sqft built 1952 · 0.68 acres $615,000 Jul 2022 $13,293 2024 Assessor + 3 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

164 Foster Ave

0.389 acres Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

165 Foster Ave

0.219 acres $285,000 Aug 2012 $9,938 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

167 Foster Ave

0.239 acres $865,000 Jan 2026 Assessor + 3 Documents Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

168 Foster Ave

0.639 acres $620,000 Sep 2007 Assessor Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

172 Foster Ave

0.38 acres $482,500 Jan 2017 $12,228 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

179 Foster Ave

0.28 acres Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

189 Foster Ave

0.21 acres $459,000 Mar 2013 Assessor + 5 Documents Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

199 Foster Ave

0.2 acres $36,500 Jul 2001 $10,239 2024 Assessor Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

200 Foster Ave

1,632 sqft built 1926 · 0.219 acres $450,000 Mar 2020 $12,572 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

201 Foster Ave

0.189 acres $342,500 Sep 2014 $8,733 2024 Assessor + 2 Documents Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

206 Foster Ave

0.23 acres $12,027 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

207 Foster Ave

0.25 acres $305,000 Feb 2011 $6,468 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

208 Foster Ave

0.339 acres $580,000 Jun 2011 $10,600 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

214 Foster Ave

2,146 sqft built 1885 · 0.48 acres Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

215 Foster Ave

0.239 acres $347,000 Jul 2014 $11,329 2024 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

220 Foster Ave

0.31 acres $445,000 Apr 2020 $12,543 2024 Assessor + 2 Documents Updated Sep 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

224 Foster Ave

0.419 acres Assessor Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

225 Foster Ave

0.25 acres Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

230 Foster Ave

0.439 acres $464,500 Nov 2015 $20,679 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

232 Foster Ave

1,084 sqft built 1917 · 0.219 acres $280,000 Oct 2021 $8,012 2024 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

234 Foster Ave

0.21 acres $130,000 Feb 1997 Assessor + 3 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

235 Foster Ave

0.23 acres $11,816 2024 Assessor Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

239 Foster Ave

0.28 acres Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

242 Foster Ave

1.1 acres Assessor Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

244 Foster Ave

0.56 acres $1,600,000 Jun 2025 Assessor Updated Oct 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

246 Foster Ave

0.58 acres $475,000 Jan 2014 $16,042 2024 Assessor + 4 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

257 Foster Ave

0.319 acres $135,000 Jul 1996 Assessor Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

259 Foster Ave

1,412 sqft built 1940 · 0.169 acres $675,000 Dec 2025 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

265 Foster Ave

0.16 acres $610,000 Sep 2022 $9,909 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

268 Foster Ave

0.55 acres $550,000 Apr 2009 $21,424 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

269 Foster Ave

0.139 acres Assessor Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

271 Foster Ave

1,716 sqft built 1927 · 0.13 acres $780,000 Sep 2025 $10,679 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

272 Foster Ave

0.53 acres $750,000 Sep 2023 $18,365 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

274 Foster Ave

0.339 acres Assessor Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

286 Foster Ave

2,170 sqft built 1971 · 0.63 acres $615,000 Sep 2018 $16,243 2024 Assessor + 2 Documents Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

295 Foster Ave

0.239 acres $422,500 Aug 2013 $13,203 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

297 Foster Ave

0.28 acres $154,000 Oct 1993 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

298 Foster Ave

0.48 acres $430,000 Mar 2005 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

299 Foster Ave

0.389 acres $180,000 Apr 1994 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

301 Foster Ave

0.4 acres Assessor Updated Oct 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

302 Foster Ave

0.869 acres $299,000 Mar 1999 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

313 Foster Ave

0.75 acres $660,000 Dec 2023 $16,075 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

314 Foster Ave

2,585 sqft built 1935 · 0.35 acres $600,000 Jul 2022 $14,178 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

319 Foster Ave

1,642 sqft built 1940 · 0.75 acres $435,000 Aug 2019 $13,203 2024 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

321 Foster Ave

0.75 acres $155,000 Jun 1997 Assessor + 1 Document Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

329 Foster Ave

0.169 acres $689,138 Jul 2025 $12,515 2024 Assessor + 4 Documents Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

335 Foster Ave

0.18 acres $125,000 Sep 1995 $12,027 2024 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

337 Foster Ave

0.23 acres $280,000 Oct 2001 $11,601 2024 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

341 Foster Ave

0.46 acres $237,500 Jul 2013 Assessor Updated Aug 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

350 Foster Ave

2,514 sqft built 1890 · 0.3 acres $695,000 Apr 2022 $14,881 2024 Assessor + 2 Documents Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

351 Foster Ave

0.339 acres $385,000 Apr 2014 $13,322 2024 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

358 Foster Ave

1 acre $200,000 Sep 1994 $14,410 2024 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

359 Foster Ave

0.389 acres $390,000 Jul 2006 Assessor Updated Aug 2026 2 Owners on File
Address Details Last Sale Tax Bill Records Owner

364 Foster Ave

0.56 acres $475,000 Sep 2001 Assessor + 2 Documents Updated Sep 2026 Owner on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

365 Foster Ave

0.43 acres $474,000 Dec 2005 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

371 Foster Ave

1.6 acres $360,000 Dec 2009 Assessor Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

377 Foster Ave

2,442 sqft built 1930 · 0.6 acres $180,000 Mar 2016 $18,376 2024 Assessor + 1 Document Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

381 Foster Ave

0.43 acres $165,000 Apr 1995 $9,708 2024 Assessor Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

385 Foster Ave

0.2 acres $845,000 Dec 2022 Assessor + 1 Document Updated Aug 2026 2 Owners on File Owner Occupied
Address Details Last Sale Tax Bill Records Owner

395 Foster Ave

3.2 acres Assessor Updated Aug 2026 Owner on File
Address Details Last Sale Tax Bill Records Owner

400 Foster Ave

4.03 acres Assessor Updated Aug 2026 Owner on File

Property Records in Nearby Streets