John DeCosta Real Estate Agent - Keller Williams Realty Portland Premiere

1 Lothlorien, Lakeoswego, OR For Sale $875,000 - listed by John DeCosta — For Sale $875,000

John DeCosta listing agent for 4992 Park Bluff Place, Lake Oswego, OR - sold for $455,000 — Sold $455,000

434 5th St, Lake Oswego, OR Pending $529,000 - listed by John DeCosta — Pending $529,000

John DeCosta buyer's agent for 11760 S Breyman Ave, Portland, OR - sold for $2,775,000 — Sold $2,775,000

4573 SW Monarch Ln, Wilsonville, OR For Sale $1,895,000 - listed by John DeCosta — For Sale $1,895,000

John DeCosta

Portland OR

Keller Williams Realty Portland Premiere

48 Closed Sales

$64.7M Total Value

$519K - $4.1M Price Range

$1.3M Average Price

Prior 5 years

About John

Since 1978 The DeCosta-Properties Team has over 60 years of combined knowledge in the southwest Portland luxury Real Estate market. Servicing luxury properties in Dunthorpe, Lake Oswego, West Linn, Wilsonville, Tigard and Sherwood. If you are looking for a historic home, lakefront property, golf community or your family’s dream estate their market knowledge and familiarity of the neighborhoods, schools, and communities will help you find the property you’ve been searching for.

Home Types: House, Lot/Land, Multifamily, Condo, Townhouse

Years of Experience: 29

Education: University of Oregon, BA and MBA

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	8
Total Value	$8,934,000
Average Sale Price	$1,116,750
Price Range	$334K - $3M

Buyer Deals
Total Deals	3
Total Value	$4,043,765
Average Sale Price	$1,347,922
Price Range	$595K - $2.8M

1 Year View by Quarter

Seller Deals
Total Deals	13
Total Value	$16,137,000
Average Sale Price	$1,241,308
Price Range	$334K - $3M

Buyer Deals
Total Deals	5
Total Value	$9,453,765
Average Sale Price	$1,890,753
Price Range	$595K - $4.1M

Seller Deals
Total Deals	38
Total Value	$48,969,050
Average Sale Price	$1,288,659
Price Range	$175K - $3M

Buyer Deals
Total Deals	10
Total Value	$15,727,754
Average Sale Price	$1,572,775
Price Range	$532K - $4.1M

5 Year View

Areas John is Experienced In

John's Listings and Deals

John's Active Listings

$875,000
- Land
- 0.5 Acre
- $1,750,000 per Acre
1 Lothlorien

Lakeoswego, OR
New lot is in final approval by the City of Lake Oswego. 22,192 sf, view lot, facing West with beautiful views of the sunsets. Just above Westridge School and Westridge Park.Very private, whisper quiet neighborhood.

John DeCosta Keller Williams Realty Portland Premiere

$1,895,000
- 4 Beds
- 3.5 Baths
- 3,740 Sq Ft
4573 SW Monarch Ln

Wilsonville, OR
Located in prestigious Stafford rolling hills. New private development of 3 homes. All have two acres. Wells, septic, level settings with territorial view of picture book horse farms. New construction in framing stage. Come take a look.Full information and plans are in documents.

John DeCosta Keller Williams Realty Portland Premiere

$1,895,000
- 4 Beds
- 3.5 Baths
- 3,432 Sq Ft
4577 SW Monarch Ln

Wilsonville, OR
Completion set for end of September or early October, 2026. In the heart of prestigious Stafford is Mission Homes newest masterpiece. Rare True one level Great Room plan on level 2 acre site. Private enclave of 3 new homes. Triple Garage, Soaring ceilings, light and bright, incredible covered outdoor living area. Room for pool, tennis court and car barn for the toys. 4 bedrooms, 3.5 Baths,

John DeCosta Keller Williams Realty Portland Premiere

$529,000

Pending
- 2 Beds
- 1.5 Baths
- 1,147 Sq Ft
434 5th St

Lake Oswego, OR
Enjoy exceptional walkability and an enviable lifestyle in this pristine, move-in-ready 1,147 sq ft condo nestled in the heart of downtown Lake Oswego's charming Village district. Meticulously maintained and in truly perfect condition, this home is spotless from top to bottom — simply unpack and start living your best life.Step outside your door and walk to almost everything you need. Just three

John DeCosta Keller Williams Realty Portland Premiere

Recently Sold

$334,000

Sold May 22, 2026
- 2 Beds
- 2.5 Baths
- 1,106 Sq Ft
15416 SW Mallard Dr

Unit 104

Beaverton, OR
- 4% Below List
- 122 Days On Market
- $302/SF
- Current Est. Value $336K
John DeCosta Keller Williams Realty Portland Premiere

$455,000

Sold Apr 17, 2026
- Land
- 0 Sq Ft Lot
4992 Park Bluff Place

Lake Oswego, OR
- 79% Below List
- 38 Days On Market
- $113/SF
- Current Est. Value $454K
John DeCosta Keller Williams Realty Portland Premiere

$600,000

Sold Apr 1, 2026
- Land
- 1.76 Acres Lot
18815 Hilltop Rd

Lake Oswego, OR
- 14% Below List
- 908 Days On Market
John DeCosta Keller Williams Realty Portland Premiere

$2,200,000

Sold Feb 25, 2026
- 4 Beds
- 3.5 Baths
- 4,287 Sq Ft
5010 Park Bluff Place

Lake Oswego, OR
- 8% Below List
- 532 Days On Market
- $513/SF
- Current Est. Value $2M
John DeCosta Keller Williams Realty Portland Premiere

$1,200,000

Sold Jan 30, 2026
- 2 Beds
- 2.5 Baths
- 2,901 Sq Ft
2450 Bellevue Terrace

West Linn, OR
- 9% Above List
- 66 Days On Market
- $414/SF
- Current Est. Value $1M
John DeCosta Keller Williams Realty Portland Premiere

$3,000,000

Sold Nov 14, 2025
- 5 Beds
- 6.5 Baths
- 7,256 Sq Ft
24683 SW Newland Rd

Wilsonville, OR
- 40% Below List
- 325 Days On Market
- $413/SF
- Current Est. Value $3M
John DeCosta Keller Williams Realty Portland Premiere

$690,000

Sold Aug 27, 2025
- 3 Beds
- 2.5 Baths
- 2,516 Sq Ft
21463 SW Christensen Ct

Tualatin, OR
- 8% Below List
- 78 Days On Market
- $274/SF
- Current Est. Value $720K
John DeCosta Keller Williams Realty Portland Premiere

$390,000

Sold May 15, 2025
- Land
- 0.31 Acres Lot
1850 Killarney Dr

West Linn, OR
- 13% Below List
- 31 Days On Market
- Current Est. Value $981K
John DeCosta Keller Williams Realty Portland Premiere

$2,099,000

Sold Mar 26, 2025
- 5 Beds
- 4.5 Baths
- 4,568 Sq Ft
4965 Park Bluff Place

Lake Oswego, OR
- 19% Below List
- 483 Days On Market
- $460/SF
- Current Est. Value $2M
John DeCosta Keller Williams Realty Portland Premiere

Agent License: Oregon 001861178

John DeCosta

(888) 623-1605

Nearby Homes

John DeCosta

About John

Transaction History

Seller Deals

Buyer Deals

Production Over Time

1 Year View by Quarter

Seller Deals

Buyer Deals

Seller Deals

Buyer Deals

Production Over Time

5 Year View

Areas John is Experienced In

John's Listings and Deals

John's Active Listings

Recently Sold