NOT LISTED FOR SALE

20 William St Unit B Mount Vernon, NY 10552

North Side Neighborhood

Estimated Value: $197,000

1 Bed
1 Bath
743 Sq Ft
$265/Sq Ft Est. Value

Sale Details

Date Sold: August 11, 2025

Last sale price $138,000 $186 Per Sq Ft

Est. 43% increase in value since last sale

Current estimated payment $1,261 / mo

25 Days on Market

Highlights

  • 0.57 Acre Lot
  • Eat-In Kitchen
  • Laundry Facilities
  • Wood Flooring
  • Entrance Foyer

About This Home

As of August 2025

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Apartment Features:

Hardwood floors that add warmth and elegance to every room

Spacious, sunlit living area ideal for relaxing, dining, or entertaining

Generously sized bedroom with great natural light

Updated kitchen and bathroom with updated appliances and finishes

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Last Agent to Sell the Property

Annette Gould

Gould Properties & Management License #49GO1122990 Listed on: 05/23/2025

Last Buyer's Agent

Patricia Dalton

Patricia Forgione's Realty License #10401314813

Property Details

Home Type

  • Co-Op

Year Built

  • Built in 1939

Lot Details

  • 24,829 Sq Ft Lot

Home Design

  • Brick Exterior Construction

Interior Spaces

  • 743 Sq Ft Home
  • Entrance Foyer
  • Wood Flooring

Kitchen

  • Eat-In Kitchen
  • Gas Range
  • Microwave
  • Dishwasher

Bedrooms and Bathrooms

  • 1 Bedroom
  • 1 Full Bathroom

Finished Basement

  • Laundry in Basement
  • Basement Storage

Schools

  • Pennington Elementary And Middle School
  • Mt Vernon High School

Utilities

  • Cooling System Mounted To A Wall/Window
  • Heating System Uses Oil
  • Cable TV Available

Listing and Financial Details

  • Assessor Parcel Number 0800-165-038-01047-000-0021

Community Details

Pet Policy

  • Breed Restrictions

Additional Features

  • Laundry Facilities
  • 5-Story Property

Property Details

Home Type

Co-Op

Year Built

Built in 1939

Lot Details

0.57 Acres

Listing Details

  • Property Type: Residential
  • Architectural Style: Other
  • Property SubType: Stock Cooperative
  • Year Built: 1939
  • Carport Y N: No
  • CurrentPrice: 138000.00
  • MlsMajorChangeType: Sold
  • CurrentPrice_By_LivingArea: 185.73351
  • ListPrice_By_LivingArea: 181.69583
  • ListPrice_By_OriginalListPrice: 1.00000
  • ListPrice_By_LotSizeAcres: 236842.1053
  • LivingAreaSearchSqFt: 743.00
  • Special Features: None
  • Property Sub Type: Coop

Interior Features

  • Appliances: Dishwasher, Gas Range, Microwave
  • Interior Amenities: Eat-in Kitchen, Entrance Foyer
  • Flooring: Hardwood
  • Full Bathrooms: 1
  • Basement: Common, Finished, Storage Space
  • Stories: 5
  • Total Bedrooms: 1
  • Fireplace: No
  • Living Area: 743
  • Basement YN: Yes

Exterior Features

  • Construction Materials: Brick
  • Waterfront: No

Garage/Parking

  • Garage: No

Utilities

  • Cooling: Wall/Window Unit(s)
  • Heating: Oil
  • Laundry Features: Common Area, In Basement
  • Sewer: Public Sewer
  • Utilities: Cable Available, Electricity Available, Electricity Connected
  • Water Source: Public

Condo/Co-op/Association

  • Senior Community: No
  • Association Name: Jenny Brown
  • Phone: 914-674-2100
  • Association: No

Schools

  • Middle School: Pennington

Lot Info

  • Lot Size Acres: 0.57
  • Lot Size Sq Ft: 24829
  • Parcel Number: 0800-165-038-01047-000-0021
  • Property Attached: No

Building Info

  • Building Features: Outdoor Space

Rental Info

  • Lease Considered: No
  • Pets Allowed: Breed Restrictions

MLS Schools

  • Elementary School: Pennington
  • High School: Mt Vernon High School
  • Middle School District: Mount Vernon
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Property History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Event Price List to Sale Price per Sq Ft
08/11/2025 08/11/25 Sold $138,000 +2.2% $186 / Sq Ft
06/17/2025 06/17/25 Pending -- -- --
05/23/2025 05/23/25 For Sale $135,000 -- $182 / Sq Ft
Source: OneKey® MLS

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $14,087 $96,000 $36,200 $59,800
2024 $122,942 $96,000 $36,200 $59,800
2023 $85,787 $96,000 $36,200 $59,800
2022 $109,426 $96,000 $36,200 $59,800
2021 $147,029 $96,000 $36,200 $59,800
2020 $92,327 $96,000 $36,200 $59,800
2019 $142,242 $96,000 $36,200 $59,800
2018 $4,472 $96,000 $36,200 $59,800
2017 -- $96,000 $36,200 $59,800
2016 $136,735 $96,000 $36,200 $59,800
2015 -- $96,000 $36,200 $59,800
2014 -- $120,000 $36,200 $83,800
2013 -- $120,000 $36,200 $83,800
Source: Public Records

Agents Affiliated with this Home

  • A

    Seller's Agent in 2025

    Annette Gould

    Gould Properties & Management

    (646) 345-0347

    7 in this area

    42 Total Sales

    Annette Gould
    Section Image

  • P

    Buyer's Agent in 2025

    Patricia Dalton

    Patricia Forgione's Realty

    (914) 573-9473

    2 in this area

    22 Total Sales

    Patricia Dalton
    Section Image
See All Agents

Map

Source: OneKey® MLS

MLS Number: 866455

OneKey® MLS
New York Westchester County Mount Vernon 10552 North Side

20 William St Unit B, Mount Vernon, NY

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