STUNNING!! One of a kind modern masterpiece located in the Knolls area of Simi Valley where its residents find that the rural character of the area enhances the quality of life. There are TWO HOUSES in one lot with separate driveways, utilities and addresses (639 & 617 Katherine RD). The MAIN HOUSE has 2,788 Sq Ft and offers 4 Bedrooms and 4 Bathrooms, a spacious open modern kitchen with plenty of cabinets and high end appliances. Upstairs is the huge private master bedroom that has walking closet corridor and spa like bathroom (separate Jacuzzi and rain shower with steamer), it connects to over a 1,000 Sq Ft balcony that has sweeping mountain views. Include also a convenient central vacuum system. It boasts a luxury and relaxing back patio with custom infinity Jacuzzi, concrete fire place with plenty of sitting space and a BBQ spot. Don't forget the spacious garage that has up to 4 full size cars space, additional storage and systems room. The SECOND HOUSE has 1,224 Sq Ft and offers no less than the main house, it was finished in 2019, has 2 Bedrooms and 2 1/2 Bathrooms, high ceilings, open modern kitchen with stainless steel appliances and a large peninsula. The glass railing balcony has an amazing unobstructed view of the mountains. It also offers a spacious 2 car garage with extra storage/office space. Assessor shows 4 Bed/4 Baths and 2,788 Sq Ft, Information of the second house hasn't been updated yet.
Single-familyProperty Type
2009Year Built
0.45 acresLot Size
$431Est. Price/Sq.Ft.
6 car garageParking
Listed by Carlos Hernandez•DRE #01921315• Century 21 Plaza
Bought with Diamond Simien•DRE #01982223• West Shores Realty, Inc.
Gorgeous brand new custom home situated on over a half acre located in the eastern Hills of Simi Valley. With awesome views of Valley and Trees. Sale includes lot next door with approved plans valid through January, 2010. Spacious Kitchen equipped with Top of the Line appliances, Cherry Cabinets and Granite Counter Tops. Home is wired with CAT, and high tech to accommodate speakers, video and security system in each room for all your technology needs. Seller is motivated and willing to entertain all offers.
CRMLS #SR20189752
Dec 18, 2020
Sold
$1,265,000
$315/sq ft
Oct 6, 2020
Pending
—
Sep 13, 2020
Listed
$1,399,000
$349/sq ft
CRMLS #F11057688
Dec 13, 2011
Listing Removed
—
May 6, 2011
Listed
$849,000
$212/sq ft
CRMLS #F1817156
Feb 9, 2010
Listing Removed
—
Aug 13, 2009
Listed
$949,950
$237/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$15,781 (+1.1%)
$890,301 + $478,975
$1,369,276
2024
$15,608 (+6.3%)
$890,301 + $478,975
$1,369,276
2023
$14,687 (−0.1%)
$872,844 + $469,584
$1,342,428
2022
$14,708 (+0.2%)
$855,729 + $460,377
$1,316,106
2021
$14,673 (+25.9%)
$838,950 + $451,350
$1,290,300
2020
$11,650 (+4.7%)
$822,500 + $442,500
$1,265,000
2019
$11,129 (+21.0%)
$259,777 + $748,738
$1,008,515
2018
$9,196 (+17.7%)
$249,691 + $548,852
$798,543
2017
$7,815 (+4.6%)
$244,796 + $429,424
$674,220
2016
$7,469
$239,997 + $421,004
$661,001
Tax history for 639 Katherine Rd
Year
Property tax
Land + Additions
Assessment*
2025
$15,781 (+1.1%)
$890,301 + $478,975
$1,369,276
2024
$15,608 (+6.3%)
$890,301 + $478,975
$1,369,276
2023
$14,687 (−0.1%)
$872,844 + $469,584
$1,342,428
2022
$14,708 (+0.2%)
$855,729 + $460,377
$1,316,106
2021
$14,673 (+25.9%)
$838,950 + $451,350
$1,290,300
2020
$11,650 (+4.7%)
$822,500 + $442,500
$1,265,000
2019
$11,129 (+21.0%)
$259,777 + $748,738
$1,008,515
2018
$9,196 (+17.7%)
$249,691 + $548,852
$798,543
2017
$7,815 (+4.6%)
$244,796 + $429,424
$674,220
2016
$7,469
$239,997 + $421,004
$661,001
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Beds
4
Baths
4
Stories
2
Lot width
—
Lot depth
—
Lot size
0.45 Acres
Year renovated
—
Sq. Ft.
2,788
Year built
2009
Style
Single Family Residential
County
Ventura County
APN
6460180150
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 11, 2026.
RE
Rural Exclusive Zone
The purpose of this zone is to provide for and maintain rural residential areas in conjunction with horticultural activities, and to provide for a limited range of service and institutional uses which are compatible with and complementary to rural residential communities.
Permitted uses
Include but are not limited to:
Greenhouse / nursery
Livestock production
Agriculture-Other
Housing-Single unit
Housing-Senior
Housing-Other
Communications tower
Park & open space
Property details
Parking
Parking / Garage Information
Attached Garage
# of Garage Spaces: 6
Covered Parking, Driveway - Concrete, Driveway Up Slope From Street
Has Parking
# of Parking Spaces: 6
Interior
Laundry Information
Has Laundry
Gas Dryer Hookup, Inside, Washer Hookup
Kitchen Information
Appliances: Dishwasher, Gas Cooktop, Microwave, Refrigerator, Tankless Water Heater, Trash Compactor, Vented Exhaust Fan