Which Mamaroneck 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 50 Mamaroneck parcels with the largest positive gap against their own street, drawn from 63 that qualify across 171 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 3 Mamaroneck 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 Town of Mamaroneck assessor first.
| # | Address | vs street | Full market value | Assessed | Est. annual tax |
|---|---|---|---|---|---|
| 1 | 87 Colonial Ave | +84.2 pts | $3,120,000 | $3,120,000 | $66,122 |
| 2 | 7 Hudson Pl | +63.1 pts | $2,476,000 | $2,476,000 | $52,473 |
| 3 | 24 Greystone Rd | +57.0 pts | $1,534,000 | $1,534,000 | $32,510 |
| 4 | 8 Prince Willows Ln | +54.1 pts | $751,000 | $751,000 | $16,761 |
| 5 | 21 Rockland Ave | +39.3 pts | $1,522,000 | $1,522,000 | $32,256 |
| 6 | 765 Forest Ave | +37.1 pts | $1,596,000 | $1,596,000 | $33,824 |
| 7 | 14 Dillon Rd | +36.9 pts | $1,214,000 | $1,214,000 | $25,728 |
| 8 | 57 Moran Pl | +35.2 pts | $1,692,000 | $1,692,000 | $35,859 |
| 9 | 767 Forest Ave | +34.1 pts | $2,395,000 | $2,395,000 | $50,757 |
| 10 | 2 Wagon Wheel Rd | +33.3 pts | $1,175,000 | $1,175,000 | $24,901 |
| 11 | 290 Weaver St | +31.4 pts | $1,784,000 | $1,784,000 | $37,808 |
| 12 | 3 Glenn Rd | +31.4 pts | $1,715,000 | $1,715,000 | $36,346 |
| 13 | 18 Wildwood Rd | +29.1 pts | $1,982,000 | $1,982,000 | $42,005 |
| 14 | 833 Fenimore Rd | +28.6 pts | $1,455,000 | $1,455,000 | $30,836 |
| 15 | 2 Fernwood Rd | +27.6 pts | $1,328,000 | $1,328,000 | $28,144 |
| 16 | 29 Carriage House Ln | +27.2 pts | $2,788,000 | $2,788,000 | $62,223 |
| 17 | 18 Carleon Ave | +27.2 pts | $2,234,000 | $2,234,000 | $47,345 |
| 18 | 6 Fairway Dr | +25.8 pts | $2,114,000 | $2,114,000 | $47,181 |
| 19 | 17 Byron Ln | +25.5 pts | $2,165,000 | $2,165,000 | $45,883 |
| 20 | 6 Pheasant Run | +24.7 pts | $1,560,000 | $1,560,000 | $33,061 |
| 21 | 84 Lookout Cir | +23.9 pts | $1,674,000 | $1,674,000 | $35,477 |
| 22 | 69 Hillcrest Ave | +22.7 pts | $1,070,000 | $1,070,000 | $22,677 |
| 23 | 8 Briar Close | +22.4 pts | $1,999,000 | $1,999,000 | $42,365 |
| 24 | 9 Normandy Rd | +22.0 pts | $1,776,000 | $1,776,000 | $37,639 |
| 25 | 8 Prince Willows Ln | +21.7 pts | $1,394,000 | $1,394,000 | $29,543 |
| 26 | 116 Carleon Ave | +20.9 pts | $2,240,000 | $2,240,000 | $47,472 |
| 27 | 51 Ellsworth Rd | +20.5 pts | $2,149,000 | $2,149,000 | $45,544 |
| 28 | 7 Oxford Rd | +20.4 pts | $2,630,000 | $2,630,000 | $55,737 |
| 29 | 100 Madison Ave | +20.4 pts | $1,835,000 | $1,835,000 | $38,889 |
| 30 | 45 Dillon Rd | +20.4 pts | $1,303,000 | $1,303,000 | $27,614 |
| 31 | 22 Winged Foot Dr | +20.1 pts | $3,055,000 | $3,055,000 | $64,745 |
| 32 | 189 Weaver St | +19.0 pts | $820,000 | $820,000 | $17,378 |
| 33 | 19 Rock Ridge Rd | +18.3 pts | $985,000 | $985,000 | $20,876 |
| 34 | 6 Murdock Rd | +17.8 pts | $1,814,000 | $1,814,000 | $40,485 |
| 35 | 127 Chatsworth Ave | +16.8 pts | $1,478,000 | $1,478,000 | $31,323 |
| 36 | 225 Rockingstone Ave | +16.1 pts | $1,890,000 | $1,890,000 | $40,055 |
| 37 | 287 Rockingstone Ave | +15.9 pts | $2,145,000 | $2,145,000 | $45,459 |
| 38 | 1015 Old White Plains Rd | +15.4 pts | $1,284,000 | $1,284,000 | $27,211 |
| 39 | 36 Byron Ln | +15.4 pts | $1,693,000 | $1,693,000 | $35,880 |
| 40 | 31 Mohegan Rd | +15.2 pts | $1,605,000 | $1,605,000 | $34,014 |
| 41 | 425 Weaver St | +15.2 pts | $709,000 | $709,000 | $15,026 |
| 42 | 44 Country Rd | +15.0 pts | $1,575,000 | $1,575,000 | $33,379 |
| 43 | 395 Weaver St | +14.5 pts | $1,042,000 | $1,042,000 | $22,083 |
| 44 | 4 Baldwin Ave | +13.9 pts | $994,000 | $994,000 | $21,066 |
| 45 | 20 Colonial Ave | +13.9 pts | $1,350,000 | $1,350,000 | $28,610 |
| 46 | 14 West Dr | +13.1 pts | $2,531,000 | $2,531,000 | $53,639 |
| 47 | 27 Holly Pl | +13.0 pts | $1,880,000 | $1,880,000 | $39,842 |
| 48 | 41 Winged Foot Dr | +12.8 pts | $3,710,000 | $3,710,000 | $78,625 |
| 49 | 78 Hillcrest Ave | +12.8 pts | $1,074,000 | $1,074,000 | $22,762 |
| 50 | 247 Rockingstone Ave | +11.9 pts | $1,349,000 | $1,349,000 | $28,589 |
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 date once, ahead of time, plus a note when the next roll is published.
Source: Mamaroneck 2026 assessment roll (SWIS 553289), compiled by Infarill LLC. Estimated taxes use county, school, and village mill rates for FY 2026 town & county / 2025-26 school and exclude special district charges. Dale Ledger is unofficial and not affiliated with any municipality or school district — confirm on the Town of Mamaroneck assessor.
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FAQ
How do I know if I am over-assessed in Mamaroneck?
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.
Unofficial. Confirm figures with the Town of Mamaroneck assessor before decisions. This edition covers the unincorporated town; the villages of Larchmont and Mamaroneck have their own rolls.