Which Mamaroneck Village homes moved most against their own street
Comparing one home's assessment to the town average tells you almost nothing — expensive streets are expensive for reasons that have nothing to do with whether the assessor got your number right. Compare your parcel to the other homes on your own street instead.
Homes on a block are similar in age, lot size, and market, so when the roll is applied evenly they move together. When parcels a few doors down barely moved and one jumped, that gap is worth asking about.
Below are the 31 Mamaroneck Village parcels with the largest positive gap against their own street, drawn from 31 that qualify across 100 streets with at least 5 comparable parcels each. A parcel appears if it rose at least 10 percentage points more than its street's median — and less than 100.
A further 2 Mamaroneck Village parcels rose more than 100 points above their street, some by over a thousand percent. Those houses were rebuilt, not re-valued, so they are excluded here — sorting by raw gap would put them at the top and bury every case a homeowner could act on. They are still on the biggest increases page.
A gap here does not mean the assessment is wrong. A finished renovation, an addition, new construction, or a correction to a previously low assessment all move a parcel faster than its street. This comparison reads the published rolls and nothing else — it does not know what is physically on the lot. If one of those happened at your house, that is your answer.
If none of them did, ask the assessor what changed. Grievance season in Westchester has the deadlines; miss one and you wait a year. Dale Ledger cannot file for you — check the Village of Mamaroneck first.
| # | Address | vs street | Full market value | Assessed | Est. annual tax |
|---|---|---|---|---|---|
| 1 | 1310 Flagler Dr | +71.3 pts | $6,970,000 | $6,970,000 | $158,585 |
| 2 | 1010 Orienta Ave | +60.3 pts | $4,490,000 | $4,490,000 | $102,158 |
| 3 | 850 Rushmore Ave | +46.9 pts | $1,695,000 | $1,695,000 | $38,566 |
| 4 | 312 Prospect Ave | +38.7 pts | $1,480,000 | $1,480,000 | $33,673 |
| 5 | 1260 Flagler Dr | +37.1 pts | $5,324,000 | $5,324,000 | $121,134 |
| 6 | 1030 Seahaven Dr | +34.6 pts | $2,476,000 | $2,476,000 | $56,334 |
| 7 | 1623 Winfield Ave | +34.3 pts | $755,000 | $755,000 | $17,178 |
| 8 | 607 Prospect Ave | +30.1 pts | $1,005,000 | $1,005,000 | $22,866 |
| 9 | 155 Grand St | +27.8 pts | $720,000 | $720,000 | $16,382 |
| 10 | 823 Msgr Goodwine Ave | +27.6 pts | $658,000 | $658,000 | $14,971 |
| 11 | 1037 Orienta Ave | +25.3 pts | $4,170,000 | $4,170,000 | $94,878 |
| 12 | 1280 Flagler Dr | +23.9 pts | $4,870,000 | $4,870,000 | $110,805 |
| 13 | 889 Port Dr | +22.8 pts | $2,075,000 | $2,075,000 | $47,211 |
| 14 | 811 Hall St | +22.2 pts | $915,000 | $915,000 | $20,819 |
| 15 | 531 Rushmore Ave | +20.9 pts | $1,549,000 | $1,549,000 | $35,244 |
| 16 | 410 Toni Ln | +18.9 pts | $1,850,000 | $1,850,000 | $42,092 |
| 17 | 1035 Nautilus Ln | +18.8 pts | $2,180,000 | $2,180,000 | $49,600 |
| 18 | 207 Grand St | +18.0 pts | $915,000 | $915,000 | $20,819 |
| 19 | 425 Soundview Ave | +17.9 pts | $1,180,000 | $1,180,000 | $26,848 |
| 20 | 930 Protano Ln | +17.4 pts | $1,514,000 | $1,514,000 | $34,447 |
| 21 | 320 Bishop Ave | +15.7 pts | $1,052,000 | $1,052,000 | $23,936 |
| 22 | 728 Walton Ave | +14.9 pts | $1,670,000 | $1,670,000 | $37,997 |
| 23 | 886 Port Dr | +14.6 pts | $1,835,000 | $1,835,000 | $41,751 |
| 24 | 215 Knollwood Ave | +14.1 pts | $1,105,000 | $1,105,000 | $25,142 |
| 25 | 602 Rockland Ave | +13.8 pts | $772,000 | $772,000 | $17,564 |
| 26 | 245 Mt Pleasant Ave | +13.5 pts | $1,160,000 | $1,160,000 | $26,394 |
| 27 | 414 Claflin Ave | +13.0 pts | $2,615,000 | $2,615,000 | $59,498 |
| 28 | 212 Heathcote Ave | +12.3 pts | $1,070,000 | $1,070,000 | $24,345 |
| 29 | 516 Munro Ave | +11.9 pts | $1,316,000 | $1,316,000 | $29,943 |
| 30 | 166 Maple Ave | +11.5 pts | $997,000 | $997,000 | $22,685 |
| 31 | 960 Green Meadow Ln | +10.4 pts | $2,997,000 | $2,997,000 | $68,190 |
Get the grievance deadline before it passes
Westchester grievance deadlines are fixed, annual, and easy to miss — once the date passes you wait a year. Leave your email and we will send you the Mamaroneck Village date once, ahead of time, plus a note when the next roll is published.
Source: Mamaroneck Village 2026 assessment roll (SWIS 553203), compiled by Infarill LLC. Estimated taxes use county, school, and village mill rates for FY 2025-2026 village / 2026 town-county and exclude special district charges. Dale Ledger is unofficial and not affiliated with any municipality or school district — confirm on the Village of Mamaroneck.
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FAQ
How do I know if I am over-assessed in Mamaroneck Village?
Compare your parcel's year-over-year change to the median change on your own street, not to the town as a whole. If yours rose substantially more and you have not renovated, built, or subdivided, that gap is worth raising with the assessor.
Does a large gap mean my assessment is wrong?
No. It is a screening signal only. Renovations, additions, new construction, and corrections to a previously low assessment all cause a parcel to rise faster than its street, legitimately.
Can Dale Ledger file a grievance for me?
No. Dale Ledger is an unofficial almanac, not a tax adviser or representative. Only you or an authorised representative can file, and only the assessor and Board of Assessment Review can change an assessment.
Open Mamaroneck Village search
Unofficial. Confirm figures with the Village of Mamaroneck and the Town of Mamaroneck assessor before decisions. Town and school taxes may use the Town assessment, which can differ from the Village roll.