21 Valley Oak Street
Portola Valley, CA 94028
Map
- 4 beds
- 4 baths
- 3,470 sqft
- ~1/2 acre lot
- $1,037 per sqft
- 1988 build
- – on site
Escape to serenity in this very private 4-bedroom, 3.5-bathroom retreat priced at $3,599,000. Spanning 3,470 square feet on a 25,966 SF lot, this 1988-built residence blends timeless elegance with modern sophistication. The light-filled interior boasts soaring ceilings, large windows, new paint, and lighting throughout, creating an inviting open-concept layout ideal for both grand entertaining and tranquil living. A gourmet kitchen, featuring stainless steel appliances flows seamlessly into spacious living and dining areas. The private primary suite offers a luxurious, spa-inspired ensuite, creating a serene haven. Outside, the beautifully landscaped lot, enveloped by Portola Valley's iconic oaks, provides a secluded oasis for relaxation or outdoor gatherings. Enjoy an excellent community of neighbors and access to top-rated schools, including Ormondale Elementary, Corte Madera Middle, and Woodside High School (buyer to verify eligibility). Perfectly positioned to get away from the lights of the city while remaining close to Silicon Valley's tech hubs, scenic trails, and Roberts Market, this home offers unmatched privacy and convenience. Seize this rare opportunity to own a slice of Portola Valleys idyllic lifestyle!
Last checked:
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Checking…
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Last updated Jul 15, 2025
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MLS# ML82014073 —
This home is listed in more than one place. See it here, and here.
The Building
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Year Built:1988
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Year Built Source:Assessor
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New Construction:No
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Roof:Composition, Tar/Gravel
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Foundation:Concrete Perimeter
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Stories Total:2
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Common Walls:No Common Walls
Interior
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Living Area Source:Assessor
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Fireplace:Yes
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Fireplace:Gas Starter
Room Dimensions
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Living Area:3470.00
Location
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Directions:Cross Street: Los Trancos
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Latitude:37.36733396
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Longitude:-122.20248282
The Property
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Property Type:Residential
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Subtype:Single Family Residence
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Zoning:PC2ASD
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Lot Size Area:25966.0000
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Lot Size Acres:0.5961
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Lot Size SqFt:25966.00
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Lot Size Source:Assessor
Listing Agent
- Contact info:
- No listing contact info available
Beds
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Total Bedrooms:4
Baths
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Total Baths:4
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Full & Three Quarter Baths:3
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Full Baths:3
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Half Baths:1
The Listing
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Special Listing Conditions:Standard
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Parcel Number:080490060
Heating & Cooling
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Heating:1
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Heating:Central
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Cooling:Yes
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Cooling:Central Air
Utilities
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Sewer:Public Sewer
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Water Source:Public
Appliances
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Included:No
Schools
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Elementary:OTHER
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Elementary School:Other
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Middle School:Other
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Middle School:OTHER
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High School:Woodside
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High School:WOODSI
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High School District:Other
The Community
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Association Amenities:Spa/Hot Tub
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Association:Portola Valley Ranch Association
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Association:Yes
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Association Fee:$540
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Association Fee Frequency:Monthly
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Assessments:No
Parking
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Parking:Yes
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Parking:Carport, Guest
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Parking Spaces:2.00
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Attached Garage:No
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Carport Spaces:2.00
Monthly cost estimate
Asking price
$3,599,000
| Expense | Monthly cost |
|---|---|
|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$19,271
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| Taxes | N/A |
| Insurance | $989 |
| HOA fees | $540 |
| Utilities | $283 See report |
| Total | $21,083/mo.* |
| *This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Soundscore™
Provided by HowLoud
Soundscore is an overall score that accounts for traffic, airport activity, and local sources. A Soundscore rating is a number between 50 (very loud) and 100 (very quiet).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
Sale history
| Date | Event | Source | Price | % Change |
|---|---|---|---|---|
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7/10/25
Jul 10, 2025
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Listed / Active | CRMLS_CA | $3,599,000 | 56.5% (4.5% / YR) |
|
11/8/12
Nov 8, 2012
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BRIDGE | $2,300,000 | ||
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9/17/12
Sep 17, 2012
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Listed / Active | MLSLISTINGS |
