A Blackhawk estate on a prominent .51-acre corner lot offers an exceptional two-level floorplan, ultra-private backyard sanctuary bordering open space, and proximity to the acclaimed Lakeside championship golf course and clubhouse, all within the gated and prestigious East Bay country club. 5819+/-SF of thoughtfully-designed living space with a grand double-door entry. Soaring ceilings. Polished oak hardwood floors. New plush carpet. A contemporary palette of fresh wall paint. New stylish light fixtures. Recessed lights. Fresh exterior paint. Energy-cost saving pool solar. Sweeping staircase. 5 bedrooms. 4.5 bathrooms include a main-level primary suite and guest suite with a walk-in closet and an all-new en-suite with tile flooring, vanity, and shower. Elegant formal living room with a gas fireplace, crown molding, and front-facing bay window. Formal dining room, slider to private patio. A chef’s eat-in kitchen. Tile counters/backsplashes. Island. Peninsula island/breakfast bar. Garden window. GE dual ovens and dishwasher. Jenn-Air cooktop. Casual dining area. Wine-Cellar. Expansive family room. Vaulted ceiling. Gas fireplace, stone surround. Walk-around wet bar. Backyard access. Executive office behind glass French doors. Oak paneling, built-ins. Bonus room with vaulted ceiling, wet bar, private balcony, and en-suite. 2 upstairs bedrooms feature walk-in closets, built-in window seats, and share a Jack-and-Jill bathroom. Primary suite with a dual-sided gas fireplace. Large walk-in closet with two entries plus a secured reach-in closet. Coffered ceiling, crown molding, and a glass slider to the backyard. En-suite with dual vanities, jetted tub, shower, updated fixtures. Backyard borders open space. Patio. Pool and spa. Mature shade trees, redwoods. Lush foliage, garden beds, lawn. The level yard offers space for potential additions such as a pool house, cabana, outdoor kitchen, and play structure. Additional features: Updated dual HVAC, two two-car garages with finished walls. Large laundry room with quartz counters, cabinetry, and a stainless-steel sink. A main-level powder room. A large storage room off the upstairs bonus room. Near 2 par-72 golf courses, tennis/pickleball courts, Fitness and Wellness Center, and Sports Complex. Nearby top-rated SRVUSD schools, Mt. Diablo, downtown, freeways, equestrian centers, and Livermore Valley Wine Country.
Est. $7,798 per month, based on comparable rentals
Sale and tax history for 4423 Deer Ridge Rd
Sale History
Tax History
Date
Event
Price
bridgeMLS, Bay East AOR, or Contra Costa AOR #41134534
Jun 11, 2026
Sold
$3,613,500
$621/sq ft
Jun 2, 2026
Pending
—
May 22, 2026
Contingent
—
May 13, 2026
Listed
$3,598,800
$618/sq ft
Public Records
May 6, 1994
Sold
$900,000
$155/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$17,933 (+2.1%)
$381,400 + $1,178,904
$1,560,304
2024
$17,563 (+1.6%)
$373,922 + $1,155,789
$1,529,711
2023
$17,287 (+0.8%)
$366,591 + $1,133,127
$1,499,718
2022
$17,149 (+2.2%)
$359,403 + $1,110,909
$1,470,312
2021
$16,780 (+0.9%)
$352,356 + $1,089,127
$1,441,483
2020
$16,627 (+1.8%)
$345,448 + $1,067,772
$1,413,220
2019
$16,329 (+3.8%)
$341,906 + $1,056,824
$1,398,730
2018
$15,729 (+3.7%)
$335,202 + $1,036,102
$1,371,304
2017
$15,167 (+1.1%)
$322,187 + $995,870
$1,318,057
2016
$14,995 (+1.2%)
$322,187 + $995,870
$1,318,057
2015
$14,819 (+1.3%)
$315,870 + $976,344
$1,292,214
2014
$14,633 (+0.6%)
$305,032 + $942,842
$1,247,874
2013
$14,551 (+3.0%)
$305,032 + $942,842
$1,247,874
2012
$14,133 (+1.8%)
$303,654 + $938,581
$1,242,235
2011
$13,884 (+1.2%)
$297,700 + $920,178
$1,217,878
2010
$13,719 (−0.1%)
$291,863 + $902,136
$1,193,999
2009
$13,737 (+3.2%)
$289,682 + $895,394
$1,185,076
2008
$13,310
$290,371 + $897,522
$1,187,893
Public record
Public record
Zoning
Permits
Beds
5
Baths
5
Stories
2
Lot width
—
Lot depth
—
Lot size
0.51 Acres
Year renovated
1990
Sq. Ft.
5,819
Year built
1990
Style
Single Family Residential
County
Contra Costa County
APN
2205510205
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
Feb 24, 2025 • Final
Building - residential mechanical
Install two new heating and air conditioning systems. A HERS report may be required at the final inspection.
HVAC
Jun 25, 2018 • Final
Building - residential plumbing
Replace a water heater in the same location.
Plumbing
Water heater
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: 4
Covered Spaces: 4
Parking Features: Attached, Int Access From Garage, Side Yard Access, Workshop in Garage, Garage Faces Front, Garage Faces Side, Garage Door Opener, Side By Side
Interior
Virtual Tour
Bathroom Information
# of Bathrooms Total: 5
# of Bathrooms Full: 4
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub, Solid Surface, Stall Shower, Tile, Updated Baths, Closet, Double Vanity, Jack & Jill, Multiple Shower Heads, Outside Access, Walk-In Closet(s), Window
Primary Bathroom Included Features: Split Bath, Stall Shower, Tile, Tub with Jets, Closet, Double Vanity, Walk-In Closet(s), Window
Interior Features
Interior Features: Dining Area, Family Room, Formal Dining Room, Office, Breakfast Bar, Breakfast Nook, Pantry, Wet Bar
Appliances: Dishwasher, Double Oven, Electric Range, Plumbed For Ice Maker, Microwave, Oven, Refrigerator, Trash Compactor, Water Filter System, Electric Water Heater, Gas Water Heater
Laundry Features: 220 Volt Outlet, Hookups Only, Laundry Room, Cabinets, Electric, Sink, Space For Frzr/Refr
Upper Level Features: 3 Bedrooms, 2 Baths
Street Level Features: 2 Bedrooms, 2.5 Baths, Primary Bedrm Suite - 1, Laundry Facility, Main Entry
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.