Kennebec County and Gardiner City property records for 44 addresses on Costello Rd, Gardiner, ME · Last verified October 2026
| Properties | 44 |
|---|---|
| Median Sale Price | $250,000 |
| Deeds and Mortgages on File | 47 |
| Median Price per Sqft | $185 |
| Owner Occupied | 66% |
| Median Annual Tax Bill | $3,230 |
| Median Year Built | 1988 |
| Median Ownership Tenure | 4 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
6 Costello Rd |
2 bd · 1 ba · 672 sqft built 1971 · 0.45 acres | $50,000 Jun 2024 | $1,055 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
16 Costello Rd |
0.229 acres | $213 2025 | Assessor + 2 Documents Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
23 Costello Rd |
3 bd · 2 ba · 1,600 sqft built 1950 · 2.65 acres | $4,155 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
24 Costello Rd |
2 bd · 1 ba · 938 sqft built 1988 · 4.36 acres | $1,736 2025 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
27 Costello Rd |
2 bd · 1 ba · 936 sqft built 2007 · 0.869 acres | — Jan 2008 | $3,167 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
28 Costello Rd |
3 bd · 2 ba · 1,620 sqft built 1974 · 0.23 acres | — Dec 2013 | $2,380 2025 | Assessor + 1 Document Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
30 Costello Rd |
3 bd · 1 ba · 937 sqft built 1985 · 1.83 acres | $110,000 Sep 2025 | $1,147 2025 | Assessor + 2 Documents Updated Jun 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
33 Costello Rd |
3 bd · 2 ba · 1,248 sqft built 1988 · 0.339 acres | $118,000 Dec 2019 | $2,509 2025 | Assessor + 5 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
39 Costello Rd |
3 bd · 2 ba · 1,410 sqft built 1950 · 1.28 acres | — Jun 2013 | $3,230 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
44 Costello Rd |
3.06 acres | $731 2025 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
56 Costello Rd |
2 bd · 2 ba · 924 sqft built 2017 · 4.58 acres | $2,477 2025 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
57 Costello Rd |
2 bd · 1 ba · 900 sqft built 1946 · 10 acres | $107,400 Dec 2019 | $2,598 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
66 Costello Rd |
3 bd · 2 ba · 1,920 sqft built 2022 · 5.03 acres | $2,396 2025 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
75 Costello Rd |
2 bd · 1.5 ba · 1,008 sqft built 2020 · 2.6 acres | $3,337 2025 | Assessor + 3 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
76 Costello Rd |
3 bd · 2 ba · 1,508 sqft built 2022 · 2.56 acres | $5,163 2025 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
85 Costello Rd |
1,080 sqft built 1994 · 2.48 acres | $1,394 2025 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
93 Costello Rd |
2 bd · 1 ba · 994 sqft built 1975 · 2.93 acres | $3,508 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
94 Costello Rd |
4 bd · 3 ba · 1,739 sqft built 2001 · 20.2 acres | $937,500 Sep 2024 | $8,327 2025 | Assessor + 1 Document Updated Jun 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
105 Costello Rd |
4 bd · 2.5 ba · 1,536 sqft built 1974 · 2.71 acres | $402,000 Apr 2024 | $5,286 2025 | Assessor + 6 Documents Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
121 Costello Rd |
2 bd · 1 ba · 1,416 sqft built 1976 · 1.91 acres | $197,700 Jun 2015 | $4,032 2025 | Assessor + 1 Document Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
122 Costello Rd |
2 bd · 1.5 ba · 1,164 sqft built 2013 · 2.25 acres | — Apr 2025 | $4,029 2025 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
135 Costello Rd |
3 bd · 1 ba · 1,677 sqft built 1860 · 20.3 acres | $150,000 Aug 2018 | $4,074 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
136 Costello Rd |
3 bd · 2 ba · 1,440 sqft built 1975 · 6.4 acres | $345,000 Dec 2025 | $4,150 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
149 Costello Rd |
2 bd · 1 ba · 952 sqft built 1988 · 1.28 acres | $1,652 2025 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
158 Costello Rd |
3 bd · 1.5 ba · 1,404 sqft built 2003 · 3.21 acres | $260,000 Aug 2026 | $2,417 2025 | Assessor + 1 Document Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
163 Costello Rd |
3 bd · 2 ba · 1,008 sqft built 1993 · 1.26 acres | $170,800 Feb 2022 | $3,724 2025 | Assessor + 1 Document Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
193 Costello Rd |
2 bd · 1 ba · 1,296 sqft built 1973 · 1.23 acres | $2,541 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
210 Costello Rd |
3 bd · 2 ba · 1,344 sqft built 2022 · 0.7 acres | $250,000 Oct 2022 | $3,761 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
214 Costello Rd |
3 bd · 1 ba · 1,220 sqft built 2012 · 2.06 acres | $342,000 Oct 2026 | $3,048 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
225 Costello Rd |
3 bd · 1.5 ba · 954 sqft built 1972 · 1.31 acres | $3,119 2025 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
226 Costello Rd |
4 bd · 2.5 ba · 2,128 sqft built 1986 · 6.6 acres | — Nov 2008 | $4,776 2025 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
239 Costello Rd |
2 bd · 1 ba · 1,344 sqft built 1980 · 14 acres | $3,143 2025 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
264 Costello Rd |
2 bd · 2 ba · 1,120 sqft built 1993 · 6.28 acres | — Oct 2014 | $4,092 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
265 Costello Rd |
2 bd · 1 ba · 2,064 sqft built 1987 · 2.96 acres | $4,379 2025 | Assessor + 4 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
281 Costello Rd |
2 bd · 1 ba · 1,592 sqft built 1790 · 6 acres | $1,189 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
299 Costello Rd |
2 bd · 2 ba · 1,821 sqft built 2007 · 3.18 acres | $160,000 Feb 2014 | $5,389 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
304 Costello Rd |
3 bd · 2 ba · 1,536 sqft built 2003 · 6.3 acres | $90,000 Jun 2024 | $3,361 2025 | Assessor Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
334 Costello Rd |
3 bd · 2 ba · 1,539 sqft built 1999 · 6.51 acres | $250,000 Sep 2024 | $2,959 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
335 Costello Rd |
3 bd · 1.5 ba · 2,191 sqft built 1845 · 23.2 acres | $5,744 2025 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
351 Costello Rd |
3 bd · 2.5 ba · 2,052 sqft built 2007 · 1.83 acres | $5,681 2025 | Assessor + 2 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
375 Costello Rd |
2 bd · 1 ba · 1,623 sqft built 1790 · 15 acres | $157,000 Oct 2017 | $3,382 2025 | Assessor + 1 Document Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
378 Costello Rd |
3 bd · 2 ba · 1,512 sqft built 2001 · 34.5 acres | $230,000 Feb 2022 | $4,037 2025 | Assessor + 2 Documents Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
390 Costello Rd |
2 bd · 1 ba · 1,152 sqft built 1954 · 2.06 acres | — Aug 2013 | $2,843 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
396 Costello Rd |
2 bd · 1 ba · 1,040 sqft built 2016 · 1.38 acres | $1,370 2025 | Assessor Updated Aug 2026 | Owner on File |