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11 Nansen Summit, Lake Oswego, OR 97035 Property Records

Multnomah County property record for 11 Nansen Summit, Lake Oswego, OR 97035

Property Summary

Property TypeSingle Family Home
Details3 bd · 2.5 ba · 3,921 sqft · built 1992
Lot Size0.185 acres (8,073 sqft)
OwnerTrust Name on File
Last Sale$980,000 (Jun 2023)
Tax Bill$20,211 (2025)
Deeds & MortgagesJun 2023 Sale
Jan 2022 Transfer
APN1S1E32CB-04900

Property Details

APN / Parcel Number

Primary APN1S1E32CB-04900
Alternative APNs
  • R590015380
  • R222895

Interior

Bedrooms3 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Plumbing Fixtures18 Plumbing Fixtures
Stories1 Story
Building Area3,921 sqft Living Area
Gross Area4,649 sqft
1st Floor Area2,131 sqft
Basement Area1,790 sqft
Finished Basement1,790 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1992
Effective Year BuiltEffective 1992
Exterior MaterialCombination
Foundation TypeConcrete
Roof TypeBowstring Truss
Roof MaterialWood
Lot Area8,073 sqft (0.185 acres)
Garage TypeAttached
Garage Area728 sqft
Parking Spaces3 Parking Spaces
Deck Area539 sqft

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemForced Air with A/C
Heating FuelGas
SewerConnected

Location & Zoning

Account NumberR590015380
Street Address11 NANSEN SMT
CityLAKE OSWEGO
StateOR
Zip97035-1066
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodePUD
Legal DescriptionMOUNTAIN PARK, BLOCK 53, LOT 23
Legal Range01E
Legal Township01S
Legal Section32
Legal SubdivisionMOUNTAIN PARK
Legal Block53
Legal Lot Number23
JurisdictionMULTNOMAH OR
Township / Civil DivisionPORTLAND WEST
Census Block Group1
Census Block1008
Census Tract6404

Owner

11 Nansen Summit is owner-occupied and held in a trust since June 2023.

Source: Multnomah County records, as of May 20, 2026

Owner of RecordTrust Name on File
Mailing Address11 NANSEN SMT, LAKE OSWEGO, OR 97035-1066
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

DateDocument
Jun 1, 2023Warranty Deed, Transfer
WFG TITLE
Jan 13, 2022Intrafamily Transfer, Transfer

Assessor's Deed Record

Deed NamesName on Deed
Last SaleJun 1, 2023 · Amount on File
Deed SaleJun 1, 2023 · Amount on File
Prior SaleAug 12, 1999 · Amount on File
Deed Document Number202333387
Prior Transfer DateAug 5, 2004
Prior Transfer Doc0000177563
Record UpdatedOct 29, 2026

June 2023: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionMULTNOMAH OR
Recording DateJun 1, 2023
Property Address11 NANSEN SMT, LAKE OSWEGO, OR 97035-1066
Document Number0000033387
Instrument DateMay 31, 2023
Instrument2023-033387
Transaction TypeTransfer
Record UpdatedJun 12, 2023
Title CompanyWFG TITLE

Transaction

AmountAmount on Record
Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name
Address175 FURNACE ST, LAKE OSWEGO, OR 97034-3960

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address11 NANSEN SMT, LAKE OSWEGO, OR 97035-1066

January 2022: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionMULTNOMAH OR
Recording DateJan 13, 2022
Property Address11 NANSEN SMT, LAKE OSWEGO, OR 97035-1066
Document Number0000005829
Instrument DateJan 5, 2022
Instrument2022-005829
Transaction TypeTransfer
Record UpdatedJun 7, 2023

Transaction

Tax$0.00
Amount AccuracyNo Consideration Stated
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address11 NANSEN SMT, LAKE OSWEGO, OR 97035-1066

Tax Assessment & Valuation

The 2025 property tax bill for 11 Nansen Summit was $20,211, up 2.8% from the year before.

Source: Multnomah County assessment roll, as of October 29, 2025

Property Jurisdictions

TypeName
StateOregon
CountyMultnomah County
MunicipalityLake Oswego City
Unified School DistrictPortland School District 1J (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$20,211.00 (+2.79%)$923,500 (+3%)$1,349,090 (+0.15%) Land $400,000 Building $949,090
2024$19,663.00 (+0.73%)$896,610 (+3%)$1,347,020 (-2.74%) Land $385,000 Building $962,020
2023$19,520.00 (+4.56%)$870,500 (+3%)$1,385,010 (+6.53%) Land $385,000 Building $1,000,010
2022$18,669.00$845,150$1,300,140 Land $375,000 Building $925,140

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA's flood maps do not cover 11 Nansen Summit; 1 flood insurance policy is in force nearby.

Source: FEMA National Flood Hazard Layer, effective May 31, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneNot included in the FIRM
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

The area around 11 Nansen Summit has no burnable land within ember reach, so its wildfire risk is not rated.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskNot rated
no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemLAKE OSWEGO MUNICIPAL WATER
serves 40,000 people · EPA ID OR4100457
Water SourcePurchased surface water from LAKE OSWEGO - TIGARD WATER SUPPLY
Last State InspectionOct 2025
Lead2 ppb (2024–2026)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and Reporting2
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 389 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Verizon
Fixed Wireless		300 / 20
CenturyLink
DSL		140 / 20
T-Mobile
Fixed Wireless		100 / 20

May also be available: AT&T, Ziply Fiber.

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