Former Thomas Ranch model home w/$300,000 upgrades in desirable westside San Ramon surrounded by open space, steps from hiking trails, park. Single-level William Lyon home 2,436 +/- sf, 4 bds, 2.5 bths on .33 acres. Private backyard retreat, towering evergreens, spa in gazebo, patios, gardens, Silvestri fountain. Open-concept, light-filled living. 12-ft ceilings, hand-scraped oak flr, new carpet, custom tile. Formal rms, eat-in kitchen, 2-level island/breakfast bar, garden window. Pro Viking cooktop + updated appliances. Fam rm w/frpl, built-ins. Master bd. w/bkyd access, crown molding, 2 walk-in closets. Master bth, marble flr, soaking tub. Glass French dr to 4th bd/office w/built-ins. Imported slate tile porch. 2-car garage, new insulated garage dr w/battery backup, 8-speaker Sonos JBL sound system, new GE HE washer/dryer, pull down staircase to 350 sf finished attic, 2-stage HE HVAC, updated water heater, Andersen windows/doors. 5 mins to freeway, The City Center, top SRVUSD schools
bridgeMLS, Bay East AOR, or Contra Costa AOR #40860377
Jun 14, 2019
Sold
$1,380,000
$567/sq ft
May 23, 2019
Pending
—
May 2, 2019
Pending
—
Apr 10, 2019
Listed
$1,449,800
$595/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #11065279
Dec 22, 2000
Sold
$800,000
$328/sq ft
Nov 8, 2000
Listing Removed
—
Aug 29, 2000
Listed
$817,990
$336/sq ft
FABULOUS MDL HM SS GR8 RM/KIT/WCTR ISLAND WD FLRS/MARB MSTR BTH INCL.DESIGNER TOP TREATMENTS/FULLY LANDSCAPED/GAZEBO/PATIO
Year
Property tax
Land + Additions
Assessment*
2025
$17,871 (+2.1%)
$796,478 + $773,721
$1,570,199
2024
$17,505 (+1.6%)
$780,861 + $758,550
$1,539,411
2023
$17,223 (+0.8%)
$765,550 + $743,677
$1,509,227
2022
$17,084 (+2.2%)
$750,540 + $729,096
$1,479,636
2021
$16,716 (+0.9%)
$735,824 + $714,800
$1,450,624
2020
$16,573 (+56.1%)
$721,397 + $700,785
$1,422,182
2019
$10,620 (+4.0%)
$714,000 + $693,600
$1,407,600
2018
$10,215 (+3.9%)
$486,282 + $383,620
$869,902
2017
$9,833 (+1.3%)
$467,400 + $368,725
$836,125
2016
$9,706 (+1.3%)
$467,400 + $368,725
$836,125
2015
$9,579 (+1.4%)
$458,236 + $361,496
$819,732
2014
$9,447 (+3.9%)
$442,512 + $349,092
$791,604
2013
$9,089 (+10.0%)
$442,512 + $349,092
$791,604
2012
$8,261 (+0.1%)
$428,199 + $337,801
$766,000
2011
$8,251 (+0.6%)
$391,305 + $308,695
$700,000
2010
$8,199 (+6.5%)
$391,305 + $308,695
$700,000
2009
$7,700 (−9.2%)
$391,305 + $308,695
$700,000
2008
$8,480
$366,150 + $288,850
$655,000
Tax history for 612 Cobblestone Dr
Year
Property tax
Land + Additions
Assessment*
2025
$17,871 (+2.1%)
$796,478 + $773,721
$1,570,199
2024
$17,505 (+1.6%)
$780,861 + $758,550
$1,539,411
2023
$17,223 (+0.8%)
$765,550 + $743,677
$1,509,227
2022
$17,084 (+2.2%)
$750,540 + $729,096
$1,479,636
2021
$16,716 (+0.9%)
$735,824 + $714,800
$1,450,624
2020
$16,573 (+56.1%)
$721,397 + $700,785
$1,422,182
2019
$10,620 (+4.0%)
$714,000 + $693,600
$1,407,600
2018
$10,215 (+3.9%)
$486,282 + $383,620
$869,902
2017
$9,833 (+1.3%)
$467,400 + $368,725
$836,125
2016
$9,706 (+1.3%)
$467,400 + $368,725
$836,125
2015
$9,579 (+1.4%)
$458,236 + $361,496
$819,732
2014
$9,447 (+3.9%)
$442,512 + $349,092
$791,604
2013
$9,089 (+10.0%)
$442,512 + $349,092
$791,604
2012
$8,261 (+0.1%)
$428,199 + $337,801
$766,000
2011
$8,251 (+0.6%)
$391,305 + $308,695
$700,000
2010
$8,199 (+6.5%)
$391,305 + $308,695
$700,000
2009
$7,700 (−9.2%)
$391,305 + $308,695
$700,000
2008
$8,480
$366,150 + $288,850
$655,000
*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
Permits
Beds
4
Baths
3
Stories
1
Lot width
—
Lot depth
—
Lot size
0.33 Acres
Year renovated
2000
Sq. Ft.
2,382
Year built
1999
Style
Single Family Residential
County
Contra Costa County
APN
2099300127
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 13, 2026.
PD
Planned Development Zone
The PD zone is applied to large parcels of land in order to reduce or eliminate the rigidity, delays, and conflicts that otherwise would result from application of zoning standards and procedures designed primarily for small parcels, and to: Ensure orderly and thorough planning and review procedures that will result in quality urban design; Encourage variety and avoid monotony in large developments by allowing greater freedom in selecting the means to provide access, light, open space, and amenity; Provide a mechanism whereby the City may authorize desirable developments consistent with the General Plan without inviting speculative rezoning applications, which, if granted, often could deprive other owners of development opportunities without resulting in construction of the proposed facilities; Encourage allocation and improvement of common open space in residential areas, and provide for open space maintenance at the expense of those who will directly benefit from it; and Encourage the assembly of properties that might otherwise be developed in unrelated increments to the detriment of surrounding neighborhoods. Building intensity may be up to the maximum required by the General Plan land use classification applicable to the site. The PD zone is consistent with and implements all land use classifications of the General Plan.
Jul 5, 2026 • Active
Miscellaneous - electrical
Electrical
Nov 6, 2025 • Final
Photovoltaic - electrical
Electrical
Solar
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
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Int Access From Garage, Garage Door Opener
Interior
Virtual Tour
Bathroom Information
# of Bathrooms Total: 3
# of Bathrooms Full: 2
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub, Solid Surface, Split Bath, Tile, Updated Baths
Kitchen Features: 220 Volt Outlet,Breakfast Bar,Breakfast Nook,Counter - Tile,Dishwasher,Double Oven,Eat In Kitchen,Garbage Disposal,Gas Range/Cooktop,Ice Maker Hookup,Island,Microwave,Oven Built-in,Pantry,Refrigerator,Self-Cleaning Oven,Updated Kitchen
Rooms Total: 10
Fireplace Features: Family Room
Exterior
Building Information
Construction Materials: Stucco
Building Area Total: 2,436
Builder Name: WM LYON
Foundation Details: Slab
Exterior Features
Patio And Porch Features: Deck, Patio
Exterior Features: Back Yard, Front Yard, Garden/Play, Side Yard, Sprinklers Automatic, Sprinklers Back, Sprinklers Front, Sprinklers Side, Terraced Up
Fencing: Fenced
Mobile Home Information
Model: Fieldstone
Pool Information
Pool Features: Possible Pool Site
Property Information
Living Area: 2436
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 2000
Lot Information
Lot Size Square Feet: 14441
Lot Size Area: 0.33
Lot Size Units: Acres
Lot Size Acres: 0.33
Lot Features: Level, Premium Lot, Regular, Sloped Up
Zoning: SFR
Utilities
Utility Information
Water Source: Public
Electric: 220 Volts in Kitchen
Sewer: Public Sewer
Heating & Cooling
Has Heating
Heating: Forced Air, Natural Gas
Cooling: Ceiling Fan(s), Central Air
Location
Homeowners Association Information
Has Association
Association Amenities: Greenbelt, Playground
Association Fee: $93
Association Fee Includes: Common Area Maint, Management Fee, Reserves
Association Fee Frequency: Monthly
HOA Transfer Fees: Paid by Buyer
School Information
High School District: San Ramon Valley (925) 552-5500
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,382
Stories: 1.0
Lot Size: 0.33 acres
Style: Single Family Residential
Year Built: 1999
Year Renovated: 2000
County: Contra Costa County
APN: 2099300127
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Twin Creeks Elementary School
Public K-5 • Assigned • 0.6mi
10/10
Iron Horse Middle School
Public 6-8 • Assigned • 2.1mi
10/10
California High School
Public 9-12 • Assigned • 3.2mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
During the last 30 days, San Ramon's market has remained balanced. Buyers enjoy more choices and negotiating opportunities, while seller continuing seeing strong demand for turnkey homes with modern upgrades, functional layout and desirable...
San Ramon is best known for its seamless mix of outdoor recreation and modern conveniences. City Center Bishop Ranch is a major hub for dining, boutique shopping, and weekend events, while the Iron Horse Trail runs right through town, making it super...
San Ramon properties move fast, going pending in just 14 days. With fierce competition at the $1.6M median price, multiple offers and waived contingencies are the norm. Buyers must act decisively and submit their strongest offer immediately to win.
Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2019. This data may not match public records. Learn more.