Nestled on a premium 0.35-acre cul-de-sac lot in San Ramon’s desirable Royal Ridge neighborhood, this extensively renovated 4-bedroom, 3-bath residence offers approximately 3,123 square feet of refined living space with beautiful valley views and resort-style outdoor amenities. The heart of the home is a designer chef’s kitchen featuring custom Medallion cabinetry, premium Miele appliances including a built-in coffee system, steam oven, and microwave, dual Bosch built-in refrigerators, a Julien sink, and a temperature-controlled 165-bottle wine refrigerator. Thoughtfully remodeled throughout, the home showcases exceptional craftsmanship and luxurious finishes, including custom cabinetry in the kitchen and bathrooms, Hansgrohe fixtures, Duravit toilets, and a stunning primary suite highlighted by a Victoria + Albert freestanding soaking tub and vessel sink. Major capital improvements include a newer roof, updated windows, and an upgraded driveway, providing long-term value and peace of mind. Extensive exterior enhancements include the transformation of the rear hillside, creating additional usable outdoor space supported by newly constructed retaining walls and professionally designed landscaping. The modernized pool and spa system features customizable LED underwater lighting and premium spa amenities. Completed through a comprehensive multi-year renovation program, these substantial improvements reflect a significant investment in quality, functionality, and lasting value. Multiple living areas, a fireplace, and a spacious 3-car garage further enhance the home's comfort and versatility. The expansive backyard creates a private retreat for entertaining and relaxation, combining mature landscaping, scenic valley views, and resort-style amenities rarely found in today's market. A rare opportunity to own an extensively renovated luxury residence in one of San Ramon's most sought-after neighborhoods, where timeless design, exceptional craftsmanship, and thoughtful upgrades come together to create an extraordinary place to call home.
For sale
$2,690,000
25 Portsmouth Ct, San Ramon, CA 94582
4beds
3,123sqft
Residential, Single Family Residence
Built in 1982
0.35 Acres Lot
$2,544,500 Zestimate®
$861/sqft
$80/mo HOA
What's special
Exceptional craftsmanshipMature landscapingPremium spa amenitiesUpgraded drivewayPremium miele appliancesLuxurious finishesStunning primary suite
- 24 days |
- 727 |
- 31 |
Zillow last checked:
Listing updated:
Listed by:
Mark Ho DRE #01988750 Off:510-739-4000,
Re/max Accord
Source: Bay East AOR,MLS#: 41137128
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Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 3
- Full bathrooms: 3
Rooms
- Room types: 1 Bedroom, 1 Bath, Main Entry
Kitchen
- Features: Stone Counters, Dishwasher, Eat-in Kitchen, Gas Range/Cooktop, Kitchen Island, Microwave, Oven Built-in, Range/Oven Built-in, Refrigerator, Updated Kitchen
Heating
- Zoned
Cooling
- Central Air
Appliances
- Included: Dishwasher, Gas Range, Microwave, Oven, Range, Refrigerator, Dryer, Washer
- Laundry: Laundry Room, Common Area
Features
- Updated Kitchen
- Flooring: Hardwood
- Number of fireplaces: 1
- Fireplace features: Family Room, Wood Burning
Interior area
- Total structure area: 3,123
- Total interior livable area: 3,123 sqft
Video & virtual tour
Property
Parking
- Total spaces: 3
- Parking features: Attached, Garage Faces Front, Private, Garage Door Opener, Side By Side
- Garage spaces: 3
Features
- Levels: Tri-Level
- Exterior features: Private Entrance
- Has private pool: Yes
- Pool features: In Ground, Pool/Spa Combo, Outdoor Pool
- Has spa: Yes
- Fencing: Fenced
Lot
- Size: 0.35 Acres
- Features: Cul-De-Sac, Premium Lot, Back Yard, Front Yard, Side Yard, Yard Space
Details
- Parcel number: 2124520061
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Contemporary
- Property subtype: Residential, Single Family Residence
Materials
- Stucco
- Roof: Composition
Condition
- Existing
- New construction: No
- Year built: 1982
Utilities & green energy
- Electric: No Solar
- Sewer: Public Sewer
- Water: Public, Meter on Site
Community & HOA
Community
- Security: Security System Leased, Carbon Monoxide Detector(s), Smoke Detector(s)
- Subdivision: Royal Ridge
HOA
- Has HOA: Yes
- Amenities included: Other
- Services included: Other
- HOA fee: $80 monthly
- HOA name: NOT LISTED
- HOA phone: 925-830-4848
Location
- Region: San Ramon
Financial & listing details
- Price per square foot: $861/sqft
- Tax assessed value: $1,465,320
- Annual tax amount: $16,712
- Price range: $2.7M - $2.7M
- Date on market: 6/4/2026
- Listing agreement: Excl Right
- Listing terms: Cash,Conventional
Estimated market value
$2,544,500
$2.42M - $2.67M
$6,674/mo
Price history
| Date | Event | Price |
|---|---|---|
| 6/4/2026 | Listed for sale | $2,690,000+124.2%$861/sqft |
Source:  Bay East AOR #41137128 Report a problem | ||
| 8/4/2016 | Listing removed | $1,200,000$384/sqft |
Source: Venture Sotheby's International Realty #40744934 Report a problem | ||
| 7/28/2016 | Pending sale | $1,200,000+1.7%$384/sqft |
Source: Venture Sotheby's International Realty #40744934 Report a problem | ||
| 6/29/2016 | Sold | $1,180,000+140.8%$378/sqft |
Source: Bay East AOR #40744934 Report a problem | ||
| 7/30/1998 | Sold | $490,000$157/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $16,712 +2% | $1,465,320 +2% |
| 2024 | $16,382 +1.6% | $1,436,589 +2% |
| 2023 | $16,131 +0.7% | $1,408,422 +2% |
| 2022 | $16,014 +2.8% | $1,380,807 +2.7% |
| 2021 | $15,584 +1% | $1,343,898 +1.4% |
| 2020 | $15,435 +2.2% | $1,325,067 +2.9% |
| 2019 | $15,107 +6.6% | $1,287,223 +4.9% |
| 2018 | $14,171 +3.7% | $1,227,671 +2% |
| 2017 | $13,663 +76.1% | $1,203,600 +82.9% |
| 2016 | $7,757 +1% | $658,038 +1.5% |
| 2015 | $7,681 +1.2% | $648,155 +2% |
| 2014 | $7,592 | $635,460 +0.5% |
| 2013 | -- | $632,589 +2% |
| 2012 | -- | $620,186 +2% |
| 2011 | -- | $608,026 +0.8% |
| 2010 | -- | $603,483 -0.2% |
| 2009 | -- | $604,917 +2% |
| 2008 | -- | $593,057 +2% |
| 2007 | -- | $581,430 +2% |
| 2006 | -- | $570,030 +2% |
| 2005 | -- | $558,854 +2% |
| 2004 | -- | $547,897 +1.9% |
| 2003 | -- | $537,857 +2% |
| 2002 | -- | $527,312 +2% |
| 2001 | -- | $516,973 |
Find assessor info on the county website
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HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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Climate risks
Neighborhood: 94582
Nearby schools
GreatSchools rating
- 10/10Walt Disney Elementary SchoolGrades: K-5Distance: 0.7 mi
- 10/10Pine Valley Middle SchoolGrades: 6-8Distance: 1 mi
- 10/10California High SchoolGrades: 9-12Distance: 0.7 mi
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- California
- Contra Costa County
- San Ramon
- 94582
- 25 Portsmouth Ct
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