$2,495,000

beds

baths

half bath

10,000

square ft

650 S Main St

Fontana, Wisconsin 53125

Name: 650 S Main St, Fontana, WI 53125
Price: 2495000 USD
Availability: InStock

Active / MLS #1983975 / Single Family / Fontana

Listing information updated 10/20/2026 at 11:41am

Discover Black Walnut Farm, a one-of-a-kind 9-bedroom, 5.5-bath Fontana estate near Geneva Lake. Set on approximately 1.3 acres, this nearly 10,000-sq.-ft. landmark unites an 1836 post-and-beam barn with an 1899 prairie-style trolley depot. Inside, exposed beams, a stone fireplace, grand gathering spaces, a 14-seat dining table, den, bar and game room create an unforgettable setting for up to 26 guests. Outdoors, enjoy tennis/pickleball, a seasonal swim spa, fire pit, porch, deck, lawn and gardens. A highly rated short-term rental with documented provenance, a preservation award and proven income history. Tourist Rooming House permit stated through June 30, 2027. Buyer to verify zoning, permit transferability and future rental use.

See it in person

Open House

1:00pm - 3:00pm Saturday, October 24th, 2026 10/24/26

{"@context":"https:\/\/schema.org","@type":"Event","name":"Open House at 650 S Main St","description":"An Open House at 650 S Main St","startDate":"2026-10-24T13:00:00-05:00","endDate":"2026-10-24T15:00:00-05:00","eventAttendanceMode":"https:\/\/schema.org\/OfflineEventAttendanceMode","eventStatus":"https:\/\/schema.org\/EventScheduled","location":{"@type":"Place","name":"650 S Main St","address":{"@type":"PostalAddress","streetAddress":"650 S Main St","addressLocality":"Fontana","postalCode":"53125","addressRegion":"Wisconsin","addressCountry":"US"}},"image":"https:\/\/resources.atproperties.com\/images\/MetroMLS\/01\/983\/975\/6acfe331977c0\/1.jpg","organizer":{"@type":"Organization","name":"","url":"https:\/\/www.atproperties.com\/1983975\/650-s-main-st-fontana-wisconsin-53125-swi"},"offers":{"@type":"Offer","price":2495000,"priceCurrency":"USD","availability":"http:\/\/schema.org\/InStock","url":"https:\/\/www.atproperties.com\/1983975\/650-s-main-st-fontana-wisconsin-53125-swi","validFrom":"2026-10-22T20:08:03-05:00"},"performer":{"@type":"PerformingGroup","name":""}}

Full Features

Architecture Style:

Other

Exterior Type:

Vinyl,Stucco

Basement:

Full,Walk Out/Outer Door,Stone,Partially Finished

Bedrooms:

Cooling System:

Window Unit(s), Central Air

Heating System:

Natural Gas, Forced Air

Appliances:

Oven, Range, Refrigerator, Disposal, Dishwasher, Microwave, Washer, Dryer

Main Level Primary Bedroom:

Fireplace:

Yes

Pool:

Age:

140 Years

Parking Type:

Unpaved,Parking Space

Room Count:

Square Feet:

10,000

Lot Size:

1.31 Acres

Acreage:

1.31

Internal Features:

Sauna, Hot Tub, Walk-thru Bedroom, Walk-In Closet(s), Vaulted Ceiling(s), High Speed Internet

External Features:

Patio/Porch

Room Information

Living Room:

25 x 25 - Upper

Dining Room:

29 x 16 - Main

Kitchen:

15 x 15 - Main

Primary Bedroom:

30 x 14 - Upper

2nd Bedroom:

25 x 25 - Upper

3rd Bedroom:

21 x 12 - Upper

4th Bedroom:

18 x 11 - Upper

Bedroom 5:

15 x 14 - Upper

Bedroom 6:

12 x 9 - Main

Bedroom 7:

12 x 9 - Main

Bedroom:

12 x 9 - Main

Taxes & Assessments

Tax Amount:

$6,947

Tax Year:

2025

Location

Zip Code:

53125

City:

Fontana

County:

Walworth

Schools

School District(s):

Fontana J8

Elementary School:

Fontana

Middle School:

N/A

High School:

Big Foot

Architecture Style:

Other

Exterior Type:

Vinyl,Stucco

Basement:

Full,Walk Out/Outer Door,Stone,Partially Finished

Bedrooms:

Cooling System:

Window Unit(s), Central Air

Heating System:

Natural Gas, Forced Air

Appliances:

Oven, Range, Refrigerator, Disposal, Dishwasher, Microwave, Washer, Dryer

Main Level Primary Bedroom:

Fireplace:

Yes

Pool:

Age:

140 Years

Parking Type:

Unpaved,Parking Space

Room Count:

Square Feet:

10,000

Lot Size:

1.31 Acres

Acreage:

1.31

Internal Features:

Sauna, Hot Tub, Walk-thru Bedroom, Walk-In Closet(s), Vaulted Ceiling(s), High Speed Internet

External Features:

Patio/Porch

Living Room:

25 x 25 - Upper

Dining Room:

29 x 16 - Main

Kitchen:

15 x 15 - Main

Primary Bedroom:

30 x 14 - Upper

2nd Bedroom:

25 x 25 - Upper

3rd Bedroom:

21 x 12 - Upper

4th Bedroom:

18 x 11 - Upper

Bedroom 5:

15 x 14 - Upper

Bedroom 6:

12 x 9 - Main

Bedroom 7:

12 x 9 - Main

Bedroom:

12 x 9 - Main

Tax Amount:

$6,947

Tax Year:

2025

Zip Code:

53125

City:

Fontana

County:

Walworth

School District(s):

Fontana J8

Elementary School:

Fontana

Middle School:

N/A

High School:

Big Foot

Listing Office: Compass Wisconsin-Lake Geneva

Listing Office Phone: 262.248.4492

Disclaimer: The data relating to real estate for sale on this website comes in part from the Broker Reciprocity Program of Metro MLS. Copyright 2026 Multiple Listing Service, Inc. - All Rights Reserved. Real estate listings held by brokerage firms other than @properties are marked with the Broker Reciprocity thumbnail logo and detailed information about them includes the name of the listing brokers. Information is supplied by seller and other third parties and has not been verified. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.

650 S Main St

Fontana, Wisconsin 53125