18 Nansen Summit
Lake Oswego, OR, 97035 $ 2,595,000
Bedrooms5 Baths4.1 Sq 5,640 Monthly Estimate*
$ 16,189
Single Family Home for sale in Lake Oswego, OR
for $2,595,000 with 5 bedrooms and 4 full baths, 1 half bath. This 5,640 square foot home was built in 2025 on a lot size of 0.33.
Sitting atop the highest point in Lake Oswego lies “Summit 18,” a signature home in the 2025 Street of Dreams. Built by award-winning Elite Development PNW, this 5,640-square-foot residence captures commanding views from the top of Mount Sylvania—offering a rare blend of elevation, elegance, and design excellence. From the moment you arrive, it’s clear no detail was spared. Thoughtfully designed across three levels and connected by a custom elevator, Summit 18 features five bedrooms and four and a half baths, with a layout that balances grand scale with comfortable livability. The main level hosts a gourmet kitchen equipped with a built-in refrigerator, double ovens, gas range, and a statement island—all open to light-filled living spaces with high ceilings, wide-plank hardwood floors, and a sleek gas fireplace. Every surface and finish was chosen with intention. Upstairs, the primary suite provides a retreat-like experience with large picture windows, a spa-inspired bathroom with a soaking tub, heated tile floors, and a generous walk-in closet. Additional bedrooms offer flexibility for guests, home office, or multi-generational living. The lower level adds more room to entertain or unwind—ideal for a home theater, gym, or bonus space—with full bath access and seamless flow to the outdoors. Located in the desirable Mountain Park community, residents enjoy access to a private gym, lap pool, sport courts, and scenic trails. With a gently sloping lot, three-car garage, and panoramic views stretching over the city and surrounding hills, Summit 18 is more than just a home—it’s a statement of modern luxury at elevation.
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FeaturesInteriorInterior Amenities Floor3rd CentralVacuum Elevator GarageDoorOpener HardwoodFloors HeatedTileFloor HighCeilings Laundry Quartz SoakingTub SoundSystem TileFloor VaultedCeiling WasherDryer
Basement Daylight FullBasement
Total Fireplaces 1
Fireplace Features Gas
Hot Water Gas Tank
Window Features DoublePaneWindows
Total Bathrooms 4.1
Total Bedrooms 5
Total Baths 5
1/2 Baths 1
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GeneralSewer PublicSewer
Heating ForcedAir95Plus
Cooling CentralAir
Roof Composition
Appliances BuiltinOven BuiltinRange BuiltinRefrigerator ButlersPantry Cooktop Dishwasher Disposal DoubleOven GasAppliances Island Microwave Quartz RangeHood StainlessSteelAppliance Tile WineCooler
HOA Fee 612.0
Garage Spaces 3.0
Architectural Style NWContemporary
Security Features SecuritySystemOwned
Year Built 2025
Stories Count 3
Property Subtype SingleFamilyResidence
Tax Year 2025
Warranty BuilderWarranty
Parcel Number R222920
Accessibility AccessibleElevatorInstalled AccessibleHallway NaturalLighting WalkinShower
Assoc Fee Paid Per SemiAnnually
County Multnomah
Property Type Residential
Association Amenities AllLandscaping Gym LapPool Pool Trash
HOA Y
Full Baths 4
Status Active
Directions Nansen Summit
High School Ida B Wells
City LakeOswego
Disclosures Exempt
MLS Area _147
Lot Size Square Feet 14374.0
Listing Terms CallListingAgent Cash Conventional
Elementary School Stephenson
Tax Annual Amount 6231.5
Middle/Junior High School Jackson
Property Condition NewConstruction
Virtual Tour https://vimeo.com/1106050627
Standard Status Active
Accessory Dwelling Unit Y/N N
Legal Description MOUNTAIN PARK BLOCK 54 LOT 5
ADU False
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ExteriorExterior Amenities BuiltinBarbecue CoveredPatio Deck Fenced GasHookup OnSiteStormwaterManagement Patio PublicRoad Sprinkler Yard
Parking Features Driveway OnStreet
Lot Features GentleSloping
Water Source PublicWater
Total Parking 3.0
Garage Type Attached
Exterior Description CulturedStone LapSiding
Foundation Details ConcretePerimeter
Building Area Total 5640.0
Lot Size Acres 0.33
Road Surface Type Paved
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* Excluded FeaturesList ByHarnish Company RealtorsBroker
harnish@harnishproperties.comContact
Affordability Calculator
- Monthly Principal & Interest
- $16,189
- Monthly Property Taxes
- $519
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Lake Oswego, OR
Average List Price $1,981,928
Percent of Sale Price 24%
About Lake Oswego, OR 38,782 Population
7% Since 2002
$ 95,347 Median Income
48 Median Age
28% Households with Children
Trends Information provided by ATTOM Data Solutions.
3254084 Elementary School
3254087 Middle School
Ida B Wells High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 11/5/2025 | $2,595,000 | -7.16% | Price Down |
| 9/9/2025 | $2,795,000 | -5.89% | Price Down |
| 8/21/2025 | $2,970,000 | -0.83% | Price Down |
| 7/1/2025 | $2,995,000 | | Listed Price |