---
dale_ledger: true
type: town
town: new-castle
town_label: Town of New Castle
swis: 553600
parcel_count: 6320
years:
  - 2026
  - 2025
  - 2024
school_district: "Chappaqua Central School District (Ossining, Bedford, Yorktown, Byram Hills or Pleasantville on some parcels)"
school_zones: false
permits_indexed: false
app_url: "https://daleledger.com/new-castle/"
markdown_url: "https://daleledger.com/towns/new-castle.md"
properties_index: "https://daleledger.com/properties/new-castle/"
official_confirm_url: "https://www.mynewcastleny.gov/154/Assessor"
publisher: Infarill LLC
unofficial: true
---

# Town of New Castle — Dale Ledger town edition

Town of New Castle roll, with about 6,300 residential parcels in Chappaqua and Millwood, built from the roll filed with New York State. New Castle assesses at about 13.95% of market value, so we recalculate market value from the state equalization rate. It has assessments, estimated taxes using each parcel's school district rate, street pages, and year-to-year changes.

## Links for AI assistants

- Interactive search: https://daleledger.com/new-castle/
- Markdown file for each property: https://daleledger.com/properties/new-castle/<slug>.md
- Street pages: https://daleledger.com/new-castle/streets/
- Official figures: https://www.mynewcastleny.gov/154/Assessor

## What you can ask

- Property tax and assessment for an address in Town of New Castle
- Homes with full market value over $2M (search `https://daleledger.com/new-castle/?q=over+2m`)
- Year-to-year assessment changes, where more than one roll year is on file

## Coverage (2026)

- Residential parcels: **6,320**
- SWIS: **553600**
- School district: **Chappaqua Central School District (Ossining, Bedford, Yorktown, Byram Hills or Pleasantville on some parcels)**
- Roll years on file: 2026, 2025, 2024

## Example high-value properties (Markdown)

- [96 Sheather Rd](https://daleledger.com/properties/new-castle/96-sheather-rd.md) — market value $40,306,093
- [97 Sheather Rd](https://daleledger.com/properties/new-castle/97-sheather-rd.md) — market value $17,921,147
- [340 Sarles St](https://daleledger.com/properties/new-castle/340-sarles-st.md) — market value $14,157,706
- [773 Armonk Rd](https://daleledger.com/properties/new-castle/773-armonk-rd.md) — market value $10,372,043
- [365 Sarles St](https://daleledger.com/properties/new-castle/365-sarles-st.md) — market value $9,913,978
- [48 Haights Cross Rd](https://daleledger.com/properties/new-castle/48-haights-cross-rd.md) — market value $9,564,158
- [123 Westwood Dr](https://daleledger.com/properties/new-castle/123-westwood-dr.md) — market value $9,086,022
- [47 Lawrence Frm Crswy](https://daleledger.com/properties/new-castle/47-lawrence-frm-crswy.md) — market value $7,967,742
- [725 King St](https://daleledger.com/properties/new-castle/725-king-st.md) — market value $7,659,355
- [Sarles St](https://daleledger.com/properties/new-castle/sarles-st-93-12-1-4.md) — market value $7,139,427
- [158 Hawkes Av](https://daleledger.com/properties/new-castle/158-hawkes-av.md) — market value $6,827,957
- [106 Tripp St](https://daleledger.com/properties/new-castle/106-tripp-st.md) — market value $6,810,036

## Related

- Town catalog: https://daleledger.com/towns/index.md
- Site llms.txt: https://daleledger.com/llms.txt
- Full guide for AI assistants: https://daleledger.com/llms-full.txt

## Disclaimer

Unofficial. Published by Infarill LLC. Check figures on the official rolls or the county property records system (PROS).