Listed by Bret Butler • COMPASS. Bought with Keller Williams Rlty Bellevue.
Sold on May 2026
$3,866,500
8
bd
•
9.5 ba
•
7,630
sq ft
21407 NE Union Hill Rd, Redmond, WA 98053
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About this home
A rare legacy estate set across thirteen picturesque acres in the heart of Redmond. Tucked quietly beyond the road and surrounded by open meadows, mature evergreens and winding paths, the property offers an extraordinary sense of privacy while remaining minutes from top schools, shopping and the Eastside tech corridor. The main residence features five bedrooms plus a private one-bedroom apartment with its own entrance, offering flexibility for extended living or guests. A custom artisan kitchen opens to expansive gathering spaces and a Trex deck overlooking the surrounding landscape. The lower level includes a professionally installed home theatre designed for immersive sound and viewing enjoyment. A separate three-bedroom secondary home of approximately 2,200 sq ft with four-car garage and dedicated workshop adds remarkable versatility for hobbies, extended living or income flexibility. The grounds unfold with expansive lawns, meandering walking paths, a tranquil pond, gentle stream and vineyard grapes, creating a peaceful countryside retreat that remains exceptionally convenient to Redmond and Microsoft.
Single-familyProperty Type
1989Year Built
13.88 acresLot Size
$507Price/Sq.Ft.
9 spacesParking
Listed by Bret Butler• COMPASS
Listed by Greg Butler• COMPASS
Bought with Michael Nix• Keller Williams Rlty Bellevue
Bought with Scott Nicholson• Keller Williams Rlty Bellevue
Est. $6,184 per month, based on comparable rentals
Sale and tax history for 21407 NE Union Hill Rd
Sale History
Tax History
Date
Event
Price
May 26, 2026
Sold (MLS) (Closed)
NWMLS as Distributed by MLS Grid #2488890
$3,866,500
$507/sq ft
May 4, 2026
Pending
NWMLS as Distributed by MLS Grid #2488890
—
Apr 30, 2026
Price Changed
NWMLS as Distributed by MLS Grid #2488890
$3,995,000
$524/sq ft
Mar 6, 2026
Listed (Active)
NWMLS as Distributed by MLS Grid #2488890
$4,195,000
$550/sq ft
Jul 20, 2020
Sold (MLS)
NWMLS as Distributed by MLS Grid #1634394
$1,800,000
$236/sq ft
Jul 20, 2020
Listed
NWMLS as Distributed by MLS Grid #1634394
$1,800,000
$236/sq ft
Jul 20, 2020
Sold
Public Records
$1,750,000
$229/sq ft
Sep 25, 2009
Sold (MLS) (Sold)
NWMLS as Distributed by MLS Grid #29081748
$1,100,000
$144/sq ft
Aug 8, 2009
Pending
NWMLS as Distributed by MLS Grid #29081748
—
Jul 1, 2009
Pending (Pending Inspection)
NWMLS as Distributed by MLS Grid #29081748
—
Jun 30, 2009
Delisted
NWMLS as Distributed by MLS Grid #29081748
—
Jun 10, 2009
Listed
NWMLS as Distributed by MLS Grid #29081748
$1,000,000
$131/sq ft
May 12, 2005
Sold
Public Records
$1,410,000
$185/sq ft
Apr 28, 2005
Delisted
NWMLS as Distributed by MLS Grid #24086478
—
Jun 21, 2004
Listed
NWMLS as Distributed by MLS Grid #24086478
*
Oct 21, 1988
Sold
Public Records
$11,000
$1/sq ft
Aug 25, 1986
Sold
Public Records
$100,000
$13/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$28,742 (+18.0%)
$674,000 + $2,446,000
$3,120,000
2025
$24,348 (+14.3%)
$674,000 + $2,446,000
$3,120,000
2024
$21,295 (−5.3%)
$674,000 + $2,133,000
$2,807,000
2023
$22,498 (+23.0%)
$595,000 + $1,811,000
$2,406,000
2022
$18,285 (+7.4%)
$732,000 + $2,181,000
$2,913,000
2021
$17,029 (+2.8%)
$506,000 + $1,507,000
$2,013,000
2020
$16,569 (+7.1%)
$450,000 + $1,265,000
$1,715,000
2019
$15,470 (−9.3%)
$436,000 + $1,187,000
$1,623,000
2018
$17,047 (+12.2%)
$436,000 + $1,187,000
$1,623,000
2017
$15,188 (+3.6%)
$388,000 + $1,217,000
$1,605,000
2016
$14,666 (+2.8%)
$355,000 + $1,114,000
$1,469,000
2015
$14,271 (+6.1%)
$334,000 + $1,048,000
$1,382,000
2014
$13,447 (+5.0%)
$321,000 + $990,000
$1,311,000
2013
$12,808 (−8.7%)
$280,000 + $864,000
$1,144,000
2012
$14,034 (+3.1%)
$261,000 + $800,000
$1,061,000
2011
$13,618 (+3.5%)
$589,000 + $538,000
$1,127,000
2010
$13,151 (+1.1%)
$637,000 + $514,000
$1,151,000
2009
$13,010
$637,000 + $707,000
$1,344,000
Public record
Public record
Zoning
Permits
Beds
5
Baths
6.5
Stories
2
Lot width
—
Lot depth
—
Lot size
13.88 Acres
Year renovated
—
Sq. Ft.
4,920
Year built
1989
Style
Single Family Residential
County
King County
APN
092506 9007
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Sep 5, 2026.
RA-5
Rural Area Zone
The purpose of the rural zone (RA) is to provide for an area-wide long-term rural character and to minimize land use conflicts with nearby agricultural or forest production districts or mineral extraction sites. These purposes are accomplished by: Limiting residential densities and permitted uses to those that are compatible with rural character and nearby resource production districts and sites and are able to be adequately supported by rural service levels; Allowing small scale farming and forestry activities and tourism and recreation uses that can be supported by rural service levels and that are compatible with rural character; Increasing required setbacks to minimize conflicts with adjacent agriculture, forest or mineral zones; and Requiring tracts created through cluster development to be designated as permanent open space or as permanent resource use.; Use of this zone is appropriate in rural areas designated by the Comprehensive Plan as follows: RA-5 in rural areas where the predominant lot pattern is five acres or greater but less than ten acres in size and the area is generally environmentally unconstrained
Permitted uses
Include but are not limited to:
Livestock production
Winery & vineyard
Housing-Other
Infrastructure
Police station
Agriculture-Cropland
Jan 28, 2026 • Final
Building mechanical residential
Install a new air conditioner.
HVAC
Sep 21, 2018 • Final
Signs
Construct a single-sided, indirectly illuminated, free-standing sign. Perform an inspection to verify the removal of a previous sign.
Electrical
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Vegetation: Fruit Trees, Garden Space, Pasture, Wooded
Lot Information
MLS Lot Size Source: King County
Site Features: Cabana/Gazebo,Cable TV,Deck,Electric Car Charging,Fenced-Partially,Gated Entry,Green House,High Speed Internet,Irrigation,Outbuildings,Patio,Propane,RV Parking,Shop,Sprinkler System
Zoning Jurisdiction: County
Lot Features: Open Space, Paved
Lot Size Units: Square Feet
Lot Size Acres: 13.88
Elevation Units: Feet
Financial
Tax Information
Tax Annual Amount: $28,741.94
Tax Year: 2026
Financial Information
Listing Terms: Cash, Conventional
Buyer Financing: Cash
Utilities
Utility Information
Water Source: Public
Water Company: Union Hill Water
Power Company: PSE
Sewer: Septic Tank
Sewer Company: Septic
Water Heater Location: Lower Level
Water Heater Type: Gas
Location
School Information
Elementary School: Dickinson Elem
Middle Or Junior High School: Evergreen Middle
High School: Eastlake High
High School District: Lake Washington
Location Information
Directions: GPS Friendly
Topography: Level,Partial Slope
Community Information
Senior Exemption: false
Public facts
Beds: 5
Baths: 6.5
Sq. Ft.: 4,920
Stories: 2.0
Lot Size: 13.88 acres
Style: Single Family Residential
Year Built: 1989
Year Renovated: —
County: King County
APN: 092506 9007
Home facts updated by county records on Sep 5, 2026
Other
Listing Information
Buyer Brokerage Compensation: 2
Buyer Brokerage Compensation Type: %
Mls Status: Sold
Listing Date Information
On Market Date: Friday, March 6, 2026
Green Information
Direction Faces: East
Power Production Type: Electric, Natural Gas
Home Information
Living Area: 7,630
Calculated Square Footage: 7630
MLS Square Footage Source: King County
Building Area Total: 7630
Building Area Units: Square Feet
Foundation Details: Poured Concrete, Slab
Structure Type: House
Levels: Two
Security Features: Partially Fenced, Security Gate, Security System
Entry Location: Main
Around this home
Schools
Emily Dickinson Elementary School
Public K-5 • Assigned • 0.4mi
9/10
Evergreen Junior High School
Public 6-8 • Assigned • 0.4mi
10/10
Eastlake High School
Public 9-12 • Assigned • 4.0mi
10/10
Provided by GreatSchools
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
2/10 Heat Factor
6 days above 87° expected this year, 12 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
9 unhealthy days expected this year, 11 days in 30 years
Provided by First Street
Historical weather
Redmond, WA • 98053
Average low and high temperatures (°F)
45
35
47
36
52
39
61
42
67
47
73
52
77
55
77
58
71
54
59
45
51
41
48
39
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
71/ 100
Good sunlight
Sunscore
This home receives average direct sun exposure in Redmond. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
8.2 hrs
4.4 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$3.59M – $4.35M
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