Opportunity awaits at 20 Madison Ave, a legal single-family Colonial offering over 3,300 square feet of interior space on a 0.23-acre lot in Mount Pleasant. Currently configured as office space, legal 4 bed 1 bath, this property presents a unique chance to restore and customize a residential layout to suit your vision. Currently has month to month commercial tenants on 1st & basement and another on 2nd-3rd floors.
The existing layout spans multiple levels and includes numerous finished rooms, providing flexibility for reconfiguration into a traditional single-family residence with multiple bedrooms, living areas, and workspace options. A full finished basement with walk-out access adds additional usable space, while the expansive lot offers room for outdoor enjoyment, parking, or future enhancements.
The property features central air, public utilities, and a driveway with an 8-car parking lot. Conveniently located near the Taconic State Pway, 2 blocks from Metro North Valhalla stop on the Harlem Line, and local amenities, the location supports a variety of residential living needs.
Important: Property is being sold as-is. There is currently no Certificate of Occupancy, and the Town reports three open/expired permits. Buyer is responsible for all due diligence, permits, and any required approvals. A rare opportunity to bring new life to a property with strong fundamentals, generous space, and long-term potential.
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Zillow last checked:
Listing updated:
Listed by:
Hollingsworth Real Estate Grp.914-303-1879,
Rey Hollingsworth Falu914-730-4238
Source: OneKey® MLS as distributed by MLS GRID,MLS#: 969333
Facts & features
Interior
Bedrooms & bathrooms
Bedrooms: 4
Bathrooms: 1
Full bathrooms: 1
Basement
Description: 2 Finished Office Spaces, 2 Storage Rooms w Walk Out
Level: Basement
Office
Description: 6 Office Spaces, 1 Bathroom, 3 Storage Spaces, Front & Back Entrance, Covered Porch
Level: First
Office
Description: 3 Offices, 1 Bathroom
Level: Second
Office
Description: 1 Office
Level: Third
Heating
Forced Air, Other
Cooling
Central Air
Appliances
Included: None
Features
Other
Flooring: Wood
Basement: Finished,Full,See Remarks
Attic: See Remarks
Has fireplace: No
Interior area
Total structure area: 3,298
Total interior livable area: 2,546 sqft
Property
Parking
Total spaces: 8
Parking features: Driveway, Parking Lot
Has uncovered spaces: Yes
Features
Levels: Three Or More
Lot
Size: 10,019 Square Feet
Details
Parcel number: 3489117019000020550000
Special conditions: None
Construction
Type & style
Home type: SingleFamily
Architectural style: Colonial
Property subtype: Single Family Residence, Residential
Materials
Frame
Condition
Year built: 1910
Utilities & green energy
Sewer: Public Sewer
Water: Public
Utilities for property: Electricity Connected, Phone Connected, See Remarks, Sewer Connected, Water Connected
Community & HOA
HOA
Has HOA: No
Location
Region: Valhalla
Financial & listing details
Price per square foot: $304/sqft
Tax assessed value: $7,500
Annual tax amount: $16,894
Date on market: 3/28/2026
Cumulative days on market: 136 days
Listing agreement: Exclusive Right To Sell
Listing terms: Cash,Other
Electric utility on property: Yes
Estimated market value
Zestimate®
Not available
Estimated sales range
Not available
Rent Zestimate®
Not available
Price history
Date
Event
Price
5/14/2026
Pending sale
$775,000$304/sqft
Source: OneKey® MLS as distributed by MLS GRID #969333Report a problem
3/28/2026
Listed for sale
$775,000$304/sqft
Source: OneKey® MLS as distributed by MLS GRID #969333Report a problem