550 N Tomahawk Island Dr, Portland, OR, 97217
About This Home
This home hasn't been on the market in 40 years — a rare, floating home on North Portland Harbor with uninterrupted east-to-west water views, sunrises and sunsets right from your own dock, and a view of Mt. Hood to top it off. Original wood paneling runs throughout, and the living room has a gas fireplace along with a striking white spiral staircase — with a lit water feature at its base — leading up to the second level. The upstairs bedroom is oversized and works equally well as a second bedroom or a family room. There's also a large attic space, previously used as an office, that could easily become a third bedroom, playroom, office, or extra storage. A 3/4 bath rounds out the 2nd level.The kitchen has been updated with a glass tile backsplash, gas cooktop, and Bosch built-in microwave & oven.The primary bdrm is on the main w/ a ensuite bath that has an updated walk-in shower. Other recent updates include a tankless water heater and a new electrical panel (spring 2026). The home carries a 4-float rating with log and steel stringers (report upon request). Beyond that, it's ready for a new owner's cosmetic touch — solid bones, original details, and room to make it your own.This is life on the water, in every season. Warm days are made for paddleboarding or kayaking straight from your home down to the Island Cafe for lunch, and a short boat ride puts you in the main channel of the Columbia for some of the best fishing around — or just fish right off your own front deck. Come winter, watch the rain and fog roll over the river while you stay cozy by the fireplace, and every December this home has a front-row seat to the iconic Portland Christmas Ship Parade — the perfect excuse to host your holiday party. Located in the Tomahawk floating home community: a gated, self-run HOA that keeps dues low, and an active Yacht Club with reciprocal privileges at yacht clubs worldwide. About 15 minutes to PDX, 10 minutes to downtown Portland, and 5 minutes to downtown Vancouver, WA.
Getting Around
Car-Dependent
Some Transit
Somewhat BikeableSchools
Construction
Condition
- Property condition: Resale
- Year built: 1966
Materials
- Foundation: Other
- Roof: Membrane,Metal,Rubber
- Construction materials: Metal Siding
Type & Style
- Home type: SingleFamily
- Architectural style: Custom Style
- Property subType: Residential
Interior
Appliances
- Appliances included: Built In Oven,Built-In Range,Cooktop,Dishwasher,Free-Standing Range,Gas Appliances,Microwave,Range Hood,Stainless Steel Appliance(s),Washer/Dryer,Free-Standing Refrigerator,Gas Water Heater,Tankless Water Heater
- Laundry features: Laundry Room
Basement
- Basement: None
Bedroom2
- Features: Sliding Doors,Closet, Wallto Wall Carpet
- Level: Upper
Bedrooms & Bathrooms
- Bedrooms: 2
- Bathrooms: 3
- Full bathrooms: 2
- Partial bathrooms: 1
- Main level bathrooms: 2
Dining Room
- Features: Sliding Doors,Wallto Wall Carpet
- Level: Main
Features
- High Speed Internet,Closet,Walkin Shower
- Door features: Sliding Doors
- Window features: Double Pane Windows,Vinyl Frames
- Flooring: Vinyl,Wall to Wall Carpet
- Number of fireplaces: 1
- Fireplace features: Gas
- Fireplace: Yes
Heating & Cooling
- Heating features: Baseboard,Fireplace(s)
- Cooling features: None
Interior Area
- Total structure area: 2,000
- Total interior livable area: 2,000 sqft
Kitchen
- Features: Builtin Range, Dishwasher, Microwave,Builtin Oven, Free Standing Refrigerator, Vinyl Floor
- Level: Main
Living Room
- Features: Fireplace,Wallto Wall Carpet
- Level: Main
Master Bedroom
- Features: Closet, Ensuite, Walkin Shower, Wallto Wall Carpet
- Level: Main
Property
Accessibility
- Accessibility features: Walkin Shower,Accessibility
Details
- Parcel number: Not Found
Features
- Stories: 2
- Patio & porch: Deck
- Has view: Yes
- View description: River
- Has water view: Yes
- Water view: River
- On waterfront: Yes
- Waterfront features: River Front
- Waterbody name: Columbia River
Lot
- Features: Flood Zone,Level,SqFt 3000 to 4999
Parking
- Parking features: Off Street,Secured,Garage Available
Climate Risk is Financial Risk
Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.
Biggest Threats for This Home
- Earthquake
- Inland Flooding
- Heat Wave
- Ice Storm
How This Home’s Risks Compare
FEMA Declared Disasters in Multnomah County and Oregon
Understanding the Costs
Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.
Estimated Costs Today
| Monthly | Annual | |
|---|---|---|
| Mortgage | $2,856 | $34,272 |
| Home Insurance * | $125 | $1,500 |
| Property Taxes | $480 | $5,760 |
| Electricity | $181 | $2,178 |
| Total | $3,642 | $43,704 |
Income You'd Need if You Spent...
Oregon FAIR Plan Programs
How Costs Could Change Over Time
Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.
Comparing Against the Market
Price Per Sq Ft
vs Other Active Listings
Avg $/sqft
vs Homes Sold Last Month
Median $/sqft
Current Market Trends
Median Price Per Square Foot
The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.
Historicals for This Listing
Zestimate History ($/sqft)
No zestimate history available
Price History
| Date | Event | Price |
|---|---|---|
| 2026-07-28 | Price change | $565,000 |
| 2026-07-18 | Listed for sale | $585,000 |
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