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Listing courtesy of NWMLS / Windermere RE San Juan Island

722 Prohaska Road

Friday Harbor, WA 98250

3 beds
4 baths
3,968 sqft
~18 acre lot
$346 per sqft
1971 build

Once a cherished writers’ retreat where several books were written, this magical dividable 18-acre San Juan Island property is a haven of creativity and tranquility. The 3,648 sf home is designed with versatility in mind, offering essentially two complete living spaces—each with its own kitchen, bedroom, bathroom, and living room—ideal for multi-generational living or guest accommodations. A separate 320 sf guest cottage with bath adds even more flexibility. Thoughtful updates include laminate flooring, refreshed bathrooms, newer heating system, expansive decking, and a saltwater hot tub. The grounds are equally magical, with fruit trees, ponds, mature landscaping, a 2 stall horse paddock, an artist’s shop, and a mystical forest to explore.

Listing courtesy of NWMLS / Windermere RE San Juan Island

Last checked: Checking… • Last updated May 6, 2025 •

MLS# 2368430 —

The Building

Year Built:

1971
New Construction:

false
Building Information:

Built On Lot
Structure Type:

House
Roof:

Composition
Entry Location:

Main
Foundation Details:

Poured Concrete
Basement:

None
Exterior Features:

Wood
Building Area Total:

3648
Building Area Units:

Square Feet
Calculated SqFt:

3968
SqFt Source:

SJC
Construction Materials:

Wood

Interior

Interior Features:

Bath Off Primary, Ceiling Fan(s), Ceramic Tile, Double Pane/Storm Window, Dining Room, Fireplace, French Doors, Hot Tub/Spa, Skylight(s), Water Heater
Living Area:

3648
Flooring:

Ceramic Tile, Laminate
Fireplace:

true
Fireplaces Total:

3
Fireplace Features:

Wood Burning
Main Level Fireplace:

3
Finished SqFt:

3648

Financial & Terms

Possession:

Closing, Negotiable

Location

Latitude:

48.530924
Longitude:

-123.11403
Directions:

San Juan Valley Rd, Left onto Wold Rd, Right onto Kiehl Rd, Right on Prohaska Rd, follow to 722 on Right

The Property

Property Type:

Residential
Property Subtype:

Single Family Residence
Parcel Number:

351813004000
Lot Features:

Adjacent to Public Land, Dead End Street, Dirt Road, Drought Resistant Landscape, Open Space, Secluded
Lot Size Units:

Square Feet
Lot Size Acres:

18.2799
Lot Size SqFt:

796276
Lot Size Source:

Survey
Zoning Jurisdiction:

County
Land Lease:

false
View:

Pond, Territorial
View:

true
Waterfront:

false
Topography:

Equestrian,Level
Vegetation:

Brush, Fruit Trees, Garden Space, Pasture, Wooded
Irrigation Water Rights:

false

Listing Agent

Contact info:

Taxes

Tax Year:

2025
Tax Annual Amount:

5879

Beds

Bedrooms Total:

3
Bedrooms Possible:

3
Main Level Bedrooms:

3

Baths

Total Baths:

4
Baths:

3
Full Baths:

1
Three Quarter Baths:

2
Half Baths:

1
Main Full Baths:

1
Main Level Bathrooms:

4
Main level Three Quarter Bath:

2
Main Half Baths:

1
# of Bathtubs:

1

The Listing

Special Listing Conditions:

None

Heating & Cooling

Cooling:

true
Heating:

true
Cooling:

Heat Pump
Heating:

Baseboard, Heat Pump

Utilities

Water Company:

Private Well
Water Heater Type:

Propane & Electric
Water Source:

Individual Well, Private
Sewer:

Septic Tank
Sewer Company:

Septic
Power Company:

Opalco

Appliances

Appliances:

Dishwasher(s), Disposal, Dryer(s), Microwave(s), Refrigerator(s), Stove(s)/Range(s), Trash Compactor, Washer(s)
Appliances Included:

Dishwasher(s),Dryer(s),Garbage Disposal,Microwave(s),Refrigerator(s),Stove(s)/Range(s),Trash Compactor,Washer(s)

Schools

High School District:

San Juan Island

The Community

Subdivision Name:

San Juan Island
Spa:

true
Senior Community:

false
Association:

false

Parking

Parking Features:

Driveway, RV Parking
Open Parking:

false
Attached Garage:

false
Carport:

false

Extra Units

Detached Dwelling SqFt Finished:

320

Listing courtesy of NWMLS / Windermere RE San Juan Island

This "Three Trees" icon indicates a listing provided courtesy of NWMLS. Based on information submitted to the MLS GRID as of Fri May 09 2025 09:16 AM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. To submit a request for a takedown notice per the Digital Millennium Copyright Act (the “DMCA”) for any NWMLS listings please see these guidelines and follow the instructions provided.

Monthly cost estimate

Asking price

$1,375,000

Expense	Monthly cost
Mortgage	$7,362
Taxes	$489
Insurance	$378
Utilities	$182 See report
Total	$8,411/mo.^*
	^*This is an estimate

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Sale history

Date	Event	Source	Price	% Change
5/1/25 May 1, 2025	Listed / Active	NWMLS	$1,375,000	89.7% (14.9% / YR)
4/30/19 Apr 30, 2019		NWMLS	$725,000

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This house located in Friday Harbor, WA 98250 is currently for sale for $1,375,000. 722 Prohaska Road is a 3,968 square foot house with 3 beds and 4 baths. This house is in the attendance area of Friday Harbor Middle School, Friday Harbor Elementary School, Stuart Island Elementary School, and Friday Harbor High School.

Listing courtesy of NWMLS / Windermere RE San Juan Island

Disclaimer: The information contained in this listing has not been verified by Windermere RE San Juan Island and should be verified by the buyer.