NEW PRICE - Welcome to your Delta waterfront escape—this custom 4,689 sq ft home sits on a large corner lot with an impressive “U”-shaped driveway and offers a private dock equipped with two HydroHoists (10,000 lb & 7,500 lb). With direct access to over 1,100 miles of waterways leading to the San Francisco Bay, this is boating at its best. Ask about the boat for sale. Inside, a marble style ceramic floor in the foyer opens to a light-filled open floorplan with soaring ceilings. The kitchen shines with stainless steel appliances and abundant cabinetry, while the great room delivers an immersive entertainment experience with a professional-grade 11.1 channel Dolby Atmos surround sound system (available for purchase). The downstairs primary suite (~725 sq ft) offers a private retreat, complemented by a formal dining room and a versatile bonus room (potential 4th bedroom). Step outside to a large deck framed by lush landscaping—perfect for waterfront entertaining. The oversized 4-car shop-style garage (~930 sq ft, ~29’ x 32’) with 10’6” ceilings and a 10’ x 10’ RV door is ideal for boats, vehicles, or hobbies, plus side yard trailer storage. A rare opportunity to own a true Delta waterfront entertainer’s dream.
Single-familyProperty Type
1993Year Built
9,780 sq ftLot Size
$325Price/Sq.Ft.
4 car garageParking
Listed by Michael Guzzardo•DRE #01066846• Corcoran Icon Properties
bridgeMLS, Bay East AOR, or Contra Costa AOR #41129278
Sep 9, 2026
Pending
—
Aug 17, 2026
Price Changed
$1,525,000
$325/sq ft
Jul 15, 2026
Price Changed
$1,550,000
$331/sq ft
May 11, 2026
Price Changed
$1,595,000
$340/sq ft
Apr 1, 2026
Listed
$1,650,000
$352/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #40360779
Apr 3, 2009
Sold
$650,000
$139/sq ft
Feb 3, 2009
Listing Removed
—
Jan 28, 2009
Price Changed
$675,000
$144/sq ft
Jan 15, 2009
Relisted
—
Jan 14, 2009
Listing Removed
—
Dec 5, 2008
Price Changed
$725,000
$155/sq ft
Nov 6, 2008
Price Changed
$775,000
$165/sq ft
Oct 10, 2008
Price Changed
$819,900
$175/sq ft
Sep 4, 2008
Price Changed
$849,900
$181/sq ft
Aug 6, 2008
Listed
$899,900
$192/sq ft
+4
DEEPWATER CUSTM ON PREMIUM CORNER LOT!!-4689 SQ FT-LRG MSTR ON MAIN LVL-HUGE FRML LIV RM -DINING RM & GREAT ROOM-LRG 2ND BDRMS + LOFT AREA-GRMT KIT W/NEW GRNTE SLAB CNTRS, STNLSS APP, HRDWD FLRS & ABUNDANCE OF CABS & CNTR SPACE-LRG VINYL DECK + U DOCK - 3 CAR (1-SD RV) + LRG CMNTD SDYRD-CIR DRVWY..
bridgeMLS, Bay East AOR, or Contra Costa AOR #40174158
Jul 13, 2006
Listing Removed
—
Jun 5, 2006
Listed
*
bridgeMLS, Bay East AOR, or Contra Costa AOR #40142386
Jun 5, 2006
Listing Removed
—
Feb 13, 2006
Listed
*
bridgeMLS, Bay East AOR, or Contra Costa AOR #40002248
Jun 15, 2004
Sold
$939,000
$200/sq ft
Apr 17, 2004
Listing Removed
—
Mar 12, 2004
Listed
$929,000
$198/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$10,950 (+4.8%)
$203,584 + $650,182
$853,766
2024
$10,444 (+1.5%)
$199,593 + $637,434
$837,027
2023
$10,291 (+1.6%)
$195,680 + $624,936
$820,616
2022
$10,132 (+2.3%)
$191,844 + $612,683
$804,527
2021
$9,899 (+0.2%)
$188,083 + $600,670
$788,753
2020
$9,875 (+1.1%)
$184,396 + $588,893
$773,289
2019
$9,771 (+3.8%)
$182,506 + $582,855
$765,361
2018
$9,410 (+1.9%)
$178,928 + $571,427
$750,355
2017
$9,233 (+0.5%)
$171,981 + $549,239
$721,220
2016
$9,186 (+1.9%)
$171,981 + $549,239
$721,220
2015
$9,011 (+1.9%)
$168,609 + $538,470
$707,079
2014
$8,847 (+0.6%)
$162,824 + $519,993
$682,817
2013
$8,794 (+1.9%)
$162,824 + $519,993
$682,817
2012
$8,631 (+3.3%)
$162,089 + $517,643
$679,732
2011
$8,351 (+2.4%)
$158,911 + $507,494
$666,405
2010
$8,155 (−5.9%)
$155,796 + $497,544
$653,340
2009
$8,664 (−26.8%)
$154,632 + $493,826
$648,458
2008
$11,837
$350,000 + $350,000
$700,000
Public record
Public record
Zoning
Permits
Beds
3
Baths
3
Stories
2
Lot width
—
Lot depth
—
Lot size
9,780 Sq. Ft.
Year renovated
1994
Finished Sq. Ft.
4,689
Unfinished Sq. Ft.
—
Total Sq. Ft.
4,689
Year built
1993
Style
Single Family Residential
County
Contra Costa County
APN
0083600072
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 17, 2009 • Final
Building - residential plumbing
Install gas shut-off devices.
Gas
Feb 25, 2004 • Final
Building - residential plumbing
Remove and replace a water heater.
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.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
2/10 Fire Factor
0.00% chance of being in a wildfire in next 30 years
6/10 Heat Factor
7 days above 103° expected this year, 15 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
20 unhealthy days expected this year, 21 days in 30 years
Provided by First Street
Historical weather
Discovery Bay, CA • 94505
Average low and high temperatures (°F)
59
39
63
44
72
49
73
49
82
55
89
58
91
58
95
62
89
60
80
55
64
46
56
43
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
84/ 100
Very good sunlight
Sunscore
This home receives average direct sun exposure in Discovery Bay. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
10 hrs
6.6 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 91 Shell Pl
We cannot show automated home-value estimates for this home.
Nearby homes have recently sold between $903,000 and $1,650,000.
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $903K to $1.6M.