20 Valley Rd
20 Valley Rd is on the Town of Mamaroneck 2026 assessment roll (parcel 1-16-689). Unofficial almanac — confirm on the published town roll.
- Full market$2,685,000
- Assessed$2,685,000
- Land$405,000
- Est. annual tax$56,903
Owner on roll: Poorman Gregory · Katz Laura. Type: Single-family. School district: Mamaroneck. Assessed change: +120.8% vs 2025.
How this compares to its street
This parcel's assessed value rose 120.8% between the last two rolls. Across the 39 comparable parcels on Valley Rd, the median rose 2.0%.
That is 119 points above its own street. A move that large is not a valuation disagreement: the house was rebuilt, the lot was split, or the parcel came back onto the roll after sitting as vacant land.
Screening comparison only, computed from published rolls. It does not account for what is physically on the lot. Confirm everything with the assessor before acting.
Valley Rd street hub · Open in search · Markdown (agents) · Official rolls
Nearby on this street
FAQ
What is the assessed value of 20 Valley Rd?
On the 2026 Town of Mamaroneck roll, parcel 1-16-689 is assessed at $2,685,000 with full market value $2,685,000.
What is the estimated property tax for 20 Valley Rd?
About $56,903 using published town, Mamaroneck school, and town/county mill rates on the assessed value. Not an official bill.
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.