Prospect St, Seattle, WA Property Records

King County property records for 77 addresses on Prospect St, Seattle, WA · Last verified August 2026

Prospect St Highlights

Properties 146
Median Sale Price $579,990
Deeds and Mortgages on File 204
Median Price per Sqft $666
Owner Occupied 66%
Median Annual Tax Bill $5,437
Median Year Built 1968
Median Ownership Tenure 9 years

Properties on Prospect St

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

15 Prospect St, Apt B101

2 bd · 1 ba · 754 sqft · built 1990 · 0.263 acres

Last Sale Tax Bill Prior Sale Owner Records
$428,000Mar 2016 $4,9942026 Amount on Record Jun 2013 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

15 Prospect St, Apt B201

2 bd · 1 ba · 753 sqft · built 1990 · 0.263 acres

Last Sale Tax Bill Prior Sale Owner Records
$599,950Feb 2025 $5,4202026 Amount on Record May 2021 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

19 Prospect St

6 bd · 4.5 ba · 5,190 sqft · built 1906 · 0.094 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,580,000Jun 2021 $19,2502026 Amount on Record Jun 2016 2 Names on Record Assessor + 4 DocumentsUpdated Aug 2026

23 Prospect St

5 bd · 5.75 ba · 3,410 sqft · built 1918 · 0.082 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,250,000Mar 2016 $19,0222026 Amount on Record Jun 2013 2 Names on Record Owner Occupied Assessor + 6 DocumentsUpdated Aug 2026

100 Prospect St

2 bd · 1 ba · 1,470 sqft · built 1941 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$380,000Oct 1997 $13,6862026 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

101 Prospect St

6 bd · 4.5 ba · 5,660 sqft · built 1920 · 0.352 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,330,000Jun 2016 $29,7952026 Amount on Record May 2001 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

116 Prospect St

5 bd · 3.25 ba · 3,730 sqft · built 1985 · 0.162 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,200,000Jan 2025 $31,9812026 Amount on Record Nov 2017 2 Names on Record Assessor + 4 DocumentsUpdated Jul 2026

120 Prospect St

7 bd · 5 ba · 6,290 sqft · built 1904 · 0.234 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,555,000Oct 2013 $37,6352026 Amount on Record Sep 1997 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

123 Prospect St

6 bd · 5 ba · 5,980 sqft · built 1910 · 0.176 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,480,000May 2015 $42,3252026 Amount on Record Aug 2011 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

150 Prospect St

4 bd · 2.5 ba · 3,260 sqft · built 1921 · 0.161 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,120,000Nov 2005 $20,3282026 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

153 Prospect St

3 bd · 2.25 ba · 3,070 sqft · built 1924 · 0.101 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,080,000Nov 2011 $24,4722026 Amount on Record Apr 2006 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

158 Prospect St

4 bd · 2.5 ba · 3,520 sqft · built 1912 · 0.161 acres

Last Sale Tax Bill Prior Sale Owner Records
$290,000Jul 1985 $27,5522026 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

161 Prospect St

4 bd · 1.5 ba · 3,720 sqft · built 2009 · 0.145 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,620,000Aug 2007 $25,5062026 —Apr 1992 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

164 Prospect St

5 bd · 7.75 ba · 3,180 sqft · built 1966 · 0.118 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,750,000Feb 2021 $30,2652026 Amount on Record Mar 2013 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

167 Prospect St

5 bd · 6.5 ba · 6,900 sqft · built 2009 · 0.201 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,900,000Jun 2026 $47,8052026 Amount on Record Nov 2011 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

170 Prospect St

6 bd · 5.25 ba · 7,080 sqft · built 1905 · 0.234 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,300,000Dec 2024 $50,4072026 Amount on Record Aug 1996 2 Names on Record Assessor + 3 DocumentsUpdated Aug 2026

171 Prospect St

5 bd · 5.25 ba · 6,590 sqft · built 1927 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,805,000Feb 2000 $46,5662026 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

201 Prospect St

5 bd · 3.5 ba · 4,860 sqft · built 1904 · 0.074 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,850,000Oct 2019 $34,5462026 Amount on Record Jun 1997 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

205 Prospect St

3 bd · 3.25 ba · 3,220 sqft · built 1914 · 0.066 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,650,000Apr 2024 $20,4162026 Amount on Record Aug 2007 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

211 Prospect St

3 bd · 1 ba · 2,480 sqft · built 1904 · 0.079 acres

Last Sale Tax Bill Prior Sale Owner Records
$438,000Apr 1997 $15,2642026 —May 1992 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

217 Prospect St

4 bd · 2.5 ba · 2,880 sqft · built 1931 · 0.165 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,300,000Aug 2023 $19,0402026 Amount on Record Dec 1994 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

223 Prospect St

5 bd · 3.5 ba · 4,180 sqft · built 1925 · 0.093 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,000,000Sep 2022 $26,9492026 Amount on Record Dec 2007 2 Names on Record Assessor + 2 DocumentsUpdated Jul 2026

302 Prospect St

2 bd · 2.25 ba · 3,170 sqft · built 1900 · 0.068 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,970,000Dec 2016 $24,6872026 Amount on Record Jun 2014 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

303 Prospect St

5 bd · 3.25 ba · 3,460 sqft · built 1924 · 0.173 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,151,000Mar 2005 $28,6122026 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

308 Prospect St

3 bd · 2 ba · 2,390 sqft · built 1900 · 0.137 acres

Last Sale Tax Bill Prior Sale Owner Records
$18,9772026 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

309 Prospect St

5 bd · 4.25 ba · 3,840 sqft · built 1924 · 0.146 acres

Last Sale Tax Bill Prior Sale Owner Records
$428,000Mar 1994 $24,9122026 —Apr 1993 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

312 Prospect St

4 bd · 3.25 ba · 3,230 sqft · built 1925 · 0.104 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,340,000Aug 2022 $25,0732026 Amount on Record Apr 2019 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

313 Prospect St

5 bd · 5 ba · 4,190 sqft · built 2016 · 0.146 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,200,000Jun 2022 $41,1322026 Amount on Record Mar 2017 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

316 Prospect St

4 bd · 2.5 ba · 2,980 sqft · built 1924 · 0.104 acres

Last Sale Tax Bill Prior Sale Owner Records
$635,000Mar 2002 $20,5842026 Amount on Record Nov 1992 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

319 Prospect St

3 bd · 3 ba · 3,010 sqft · built 1924 · 0.146 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,950,000Apr 2017 $24,7832026 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

323 Prospect St

3 bd · 3.5 ba · 3,800 sqft · built 1925 · 0.148 acres

Last Sale Tax Bill Prior Sale Owner Records
$833,000Mar 1997 $26,1212026 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

358 Prospect St

2 bd · 1.5 ba · 2,060 sqft · built 1908 · 0.101 acres

Last Sale Tax Bill Prior Sale Owner Records
$800,000May 2006 $14,5142026 Amount on Record Aug 1997 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

359 Prospect St

3 bd · 3.25 ba · 4,674 sqft · built 2017 · 0.14 acres

Last Sale Tax Bill Prior Sale Owner Records
$865,000Nov 2013 $42,9952026 Amount on Record Feb 2002 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

362 Prospect St

6 bd · 4 ba · 4,450 sqft · built 1991 · 0.107 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,267,000Jan 2013 $36,2592026 Amount on Record Dec 2000 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

365 Prospect St

4 bd · 2.25 ba · 2,320 sqft · built 1925 · 0.082 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,755,000Sep 2020 $18,5472026 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

366 Prospect St

4 bd · 3.25 ba · 3,180 sqft · built 1924 · 0.099 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,150,000Jul 2019 $27,7322026 Amount on Record Jun 2016 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

367 Prospect St

4 bd · 2.25 ba · 2,260 sqft · built 1925 · 0.08 acres

Last Sale Tax Bill Prior Sale Owner Records
$16,7042026 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

371 Prospect St

4 bd · 3.5 ba · 2,890 sqft · built 1925 · 0.077 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,125,000Oct 2019 $23,4882026 Amount on Record Nov 2016 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

402 Prospect St

5 bd · 2.25 ba · 2,570 sqft · built 1925 · 0.102 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,570,000Mar 2025 $12,9582026 Amount on Record Jun 2009 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

405 Prospect St

9 units · Built 1930 · 406 sq ft

Last Sale Median Tax Bill Median Sale    
$725,000Feb 2026 $4,0192026 $470,0009 units    

405 Prospect St

built 1930 · 0.101 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated Jan 2026

406 Prospect St

3 bd · 1.75 ba · 1,510 sqft · built 1982 · 0.066 acres

Last Sale Tax Bill Prior Sale Owner Records
$765,000Sep 2004 $14,7592026 Amount on Record Aug 1982 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

410 Prospect St

4 bd · 3.75 ba · 3,500 sqft · built 2018 · 0.082 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,225,000May 2021 $35,7572026 Amount on Record Dec 2015 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

411 Prospect St

5 bd · 2.5 ba · 3,040 sqft · built 1905 · 0.076 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,075,000Mar 2016 $17,7512026 Amount on Record Jun 2005 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

414 Prospect St

5,760 sqft · built 1960 · 0.121 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,375,000Nov 2004 $25,4192026 Amount on Record May 1998 1 Name on Record Assessor + 3 DocumentsUpdated Jul 2026

415 Prospect St

2 bd · 2.25 ba · 1,210 sqft · built 1900 · 0.055 acres

Last Sale Tax Bill Prior Sale Owner Records
$950,000Oct 2021 $9,8142026 Amount on Record Dec 2002 1 Name on Record Assessor + 4 DocumentsUpdated Aug 2026

417 Prospect St

3 bd · 2.5 ba · 2,350 sqft · built 1925 · 0.059 acres

Last Sale Tax Bill Prior Sale Owner Records
$222,500Dec 1990 $12,8462026 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

418 Prospect St

2 bd · 2 ba · 2,090 sqft · built 1909 · 0.111 acres

Last Sale Tax Bill Prior Sale Owner Records
$53,500Dec 1993 $14,8372026 —Aug 1991 1 Name on Record AssessorUpdated Jul 2026

421 Prospect St

4 bd · 1 ba · 2,430 sqft · built 1926 · 0.061 acres

Last Sale Tax Bill Prior Sale Owner Records
$231,000May 1996 $2,5192026 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

506 Prospect St, #206

1 bd · 1 ba · 522 sqft · built 1989 · 0.352 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,419,600Nov 2017 $3,4582026 Amount on Record Oct 2016 2 Names on Record AssessorUpdated Jul 2026

508 Prospect St

3 bd · 2.5 ba · 2,000 sqft · built 2017 · 0.029 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,900,000May 2021 $17,2112026 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

510 Prospect St

3 bd · 2.5 ba · 2,000 sqft · built 2017 · 0.034 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,655,950Aug 2020 $16,7362026 Amount on Record Jul 2017 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

510 Prospect St, #A

3 bd · 2.5 ba · 2,000 sqft · built 2017 · 0.034 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,575,000Oct 2024 $15,1702026 Amount on Record Jul 2017 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

511 Prospect St

5 bd · 3.25 ba · 3,030 sqft · built 1925 · 0.057 acres

Last Sale Tax Bill Prior Sale Owner Records
$750,000Nov 2012 $12,4902026 Amount on Record Mar 2011 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

512 Prospect St

3 bd · 3.25 ba · 2,070 sqft · built 2005 · 0.039 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,380,000Mar 2020 $16,1312026 Amount on Record Sep 2011 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

513 Prospect St

3 bd · 2.25 ba · 1,110 sqft · built 2009 · 0.034 acres

Last Sale Tax Bill Prior Sale Owner Records
$870,000Sep 2020 $8,8392026 Amount on Record Jun 2009 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

514 Prospect St

3 bd · 3.25 ba · 2,070 sqft · built 2005 · 0.05 acres

Last Sale Tax Bill Prior Sale Owner Records
$945,000Jun 2006 $15,7402026 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

515 Prospect St

2 bd · 1 ba · 800 sqft · built 1900 · 0.06 acres

Last Sale Tax Bill Prior Sale Owner Records
$320,000Apr 2004 $8,9232026 —Jul 2002 1 Name on Record AssessorUpdated Jul 2026

516 Prospect St

3 bd · 3.25 ba · 2,110 sqft · built 2005 · 0.037 acres

Last Sale Tax Bill Prior Sale Owner Records
$850,000Jul 2012 $15,6952026 Amount on Record Oct 2008 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

517 Prospect St

3 bd · 2.5 ba · 2,320 sqft · built 1930 · 0.062 acres

Last Sale Tax Bill Prior Sale Owner Records
$650,000May 2000 $14,5802026 Amount on Record May 1997 1 Name on Record AssessorUpdated Jul 2026

518 Prospect St

2 bd · 2.5 ba · 1,610 sqft · built 2005 · 0.05 acres

Last Sale Tax Bill Prior Sale Owner Records
$850,000Feb 2015 $14,3032026 Amount on Record Jun 2006 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

522 Prospect St

5 bd · 3 ba · 2,170 sqft · built 1950 · 0.055 acres

Last Sale Tax Bill Prior Sale Owner Records
$935,000Aug 2007 $10,3422026 Amount on Record Mar 2006 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

554 Prospect St

3,977 sqft · built 1909 · 0.087 acres

Last Sale Tax Bill Prior Sale Owner Records
$105,000Sep 2012 $16,5422026 Amount on Record Nov 2011 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

555 Prospect St

built 1979 · 0.132 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated Jan 2026

555 Prospect St

6 units · Built 1979 · 1,006 sq ft

Last Sale Median Tax Bill Median Sale    
$565,000Nov 2024 $5,3882026 $585,0006 units    

558 Prospect St

3 bd · 2 ba · 1,420 sqft · built 1914 · 0.045 acres

Last Sale Tax Bill Prior Sale Owner Records
$750,000Sep 2016 $7,4022026 Amount on Record Jul 2012 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

563 Prospect St

3 bd · 1 ba · 1,480 sqft · built 1906 · 0.049 acres

Last Sale Tax Bill Prior Sale Owner Records
$9,9232026 —Apr 2002 1 Name on Record AssessorUpdated Aug 2026

566 Prospect St

38 units · Built 1989 · 397 sq ft

Last Sale Median Tax Bill Median Sale    
$495,000Jun 2025 $3,7852026 $512,50038 units    

566 Prospect St

built 1989 · 0.352 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record Assessor + 1 DocumentUpdated Jan 2026

600 Prospect St

4 bd · 1.5 ba · 2,140 sqft · built 1907 · 0.086 acres

Last Sale Tax Bill Prior Sale Owner Records
$177,000Oct 1989 $11,8882026 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

601 Prospect St

4 bd · 1 ba · 8,682 sqft · built 1991 · 0.082 acres

Last Sale Tax Bill Prior Sale Owner Records
$36,0872026 1 Name on Record AssessorUpdated Jul 2026

606 Prospect St

3 bd · 2.5 ba · 2,240 sqft · built 1901 · 0.075 acres

Last Sale Tax Bill Prior Sale Owner Records
$405,000Jul 2003 $14,0952026 Amount on Record May 1996 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

609 Prospect St

3 bd · 1.75 ba · 7,238 sqft · built 1995 · 0.165 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,574,000Dec 2020 $34,3622026 Amount on Record Oct 2013 1 Name on Record Assessor + 3 DocumentsUpdated Jul 2026

610 Prospect St

3 bd · 1.75 ba · 2,050 sqft · built 1907 · 0.11 acres

Last Sale Tax Bill Prior Sale Owner Records
$240,000Jan 1998 $10,9832026 Amount on Record Mar 1992 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

612 Prospect St

built 1968 · 0.353 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated Jan 2026

612 Prospect St

20 units · Built 1968 · 546 sq ft

Last Sale Median Tax Bill Median Sale    
$360,000Sep 2025 $3,3922026 $360,00020 units    

619 Prospect St

7,410 sqft · built 1968 · 0.165 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,898,200Mar 2014 $28,2592026 Amount on Record Dec 2001 1 Name on Record AssessorUpdated Jul 2026

Property Records in Nearby Streets