Tucked at the end of a peaceful cul-de-sac in prestigious Roundhill Country Club, this exceptional custom residence offers a rare blend of refined luxury, comfort, and effortless California living. Set on a private and serene .37-acre lot, the home spans approximately 3,577 square feet with four bedrooms and three and a half baths, thoughtfully designed for both everyday living and elegant entertaining. A dramatic entry with soaring volume ceilings sets the tone, flowing seamlessly into sophisticated formal spaces and a beautifully appointed kitchen that opens to the inviting family room. The layout is both functional and flexible, with three well-appointed bedrooms located on the main level. The primary suite is a true sanctuary, recently transformed into a spa-inspired retreat. Featuring quartz countertops, a freestanding soaking tub, an expansive walk-in shower, and a generous closet, the space evokes the ambiance of a luxury resort. Step outside to your private covered veranda, complete with a fireplace—an idyllic setting to unwind with a glass of wine while overlooking the tranquil backyard. Designed for year-round enjoyment, the outdoor living spaces are nothing short of spectacular. The resort-style grounds feature a covered pavilion with its own fireplace, a fully equipped outdoor kitchen, built-in heaters, and a television—creating the ultimate gathering space for entertaining. Fire features throughout the yard add warmth and ambiance, while the built-in firepit invites cozy evenings under the stars. A sparkling pool completes this backyard oasis, offering the perfect escape on warm summer days. With a rare five-car garage and an unparalleled combination of luxury amenities and inviting spaces, this remarkable property truly has it all.
Single-familyProperty Type
1993Year Built
0.37 acresLot Size
$978Price/Sq.Ft.
$115/moHOA Dues
5 car garageParking
Listed by Jill Fusari•DRE #01775608• The Agency
Bought with David Anwar•DRE #01933987• Everlux Homes
Est. $8,329 per month, based on comparable rentals
Sale and tax history for 90 Royal Ridge Ct
Sale History
Tax History
Date
Event
Price
bridgeMLS, Bay East AOR, or Contra Costa AOR #41131981
May 7, 2026
Sold
$3,500,000
$978/sq ft
Apr 28, 2026
Pending
—
Apr 27, 2026
Listed
$3,150,000
$881/sq ft
Apr 22, 2026
Coming Soon
$3,150,000
$881/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$13,941 (+2.0%)
$405,822 + $778,353
$1,184,175
2024
$13,663 (+1.5%)
$397,865 + $763,092
$1,160,957
2023
$13,457 (+0.7%)
$390,064 + $748,130
$1,138,194
2022
$13,360 (+2.1%)
$382,416 + $733,461
$1,115,877
2021
$13,082 (+0.9%)
$374,918 + $719,080
$1,093,998
2020
$12,960 (+1.2%)
$367,567 + $704,981
$1,072,548
2019
$12,804 (+8.1%)
$363,799 + $697,753
$1,061,552
2018
$11,844 (+4.9%)
$356,666 + $682,582
$1,039,248
2017
$11,289 (+2.9%)
$342,817 + $611,562
$954,379
2016
$10,971 (+1.2%)
$342,817 + $611,562
$954,379
2015
$10,837 (+1.3%)
$336,096 + $582,904
$919,000
2014
$10,695 (+5.0%)
$324,564 + $562,903
$887,467
2013
$10,190 (+3.0%)
$324,564 + $562,903
$887,467
2012
$9,894 (+1.9%)
$323,098 + $525,518
$848,616
2011
$9,714 (+1.3%)
$316,763 + $515,214
$831,977
2010
$9,593 (−0.1%)
$310,552 + $505,112
$815,664
2009
$9,605 (+3.3%)
$308,232 + $501,337
$809,569
2008
$9,296
$308,965 + $502,528
$811,493
Public record
Public record
Zoning
Permits
Beds
4
Baths
4
Stories
2
Lot width
—
Lot depth
—
Lot size
0.37 Acres
Year renovated
1993
Sq. Ft.
3,577
Year built
1993
Style
Single Family Residential
County
Contra Costa County
APN
1938400171
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 13, 2026.
P-1
Planned Unit District
A large-scale integrated development or a general plan special area of concern provides an opportunity for, and requires cohesive design when flexible regulations are applied; whereas the application of conventional regulation, designed primarily for individual lot development, to a large-scale development or special area may create a monotonous and inappropriate neighborhood. The planned unit district is intended to allow diversification in the relationship of various uses, buildings, structures, lot sizes and open space while insuring substantial compliance with the general plan and the intent of the county code in requiring adequate standards necessary to satisfy the requirements of the public health, safety and general welfare. These standards shall be observed without unduly inhibiting the advantages of large-scale site or special area planning.
Permitted uses
Include but are not limited to:
Housing-Single unit
May 18, 2022 • Final
Building - residential mechanical
Install a new furnace with a five ton capacity and eighty percent efficiency. A HERS report is required at the final inspection.
HVAC
Sep 2, 2021 • Final
Building/residential/cg/carport garage
Construct a new detached garage.
New construction
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.
Property details
Parking
Parking Information
Garage Spaces: 5
Covered Spaces: 5
Parking Features: Attached, Covered, Garage, Int Access From Garage, Off Street, Guest, Golf Cart Garage, Garage Door Opener
Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2026. This data may not match public records. Learn more.