Welcome to Mills Estates. Nestled on a generous 10,500 sqft lot in Millbrae's most sought-after neighborhood, this expansive single-family residence offers over 3,000 sqft of thoughtfully curated living space. 5 generously proportioned bedrooms and 4 full bathrooms, including 3 bedroom suites, create a refined balance of comfort, privacy, and versatility. Elegant formal living and dining rooms set the tone for elevated everyday living, anchored by a welcoming fireplace and complemented by a full bar ideal for entertaining. The gourmet kitchen is equipped with a Bertazzoni range and stainless steel appliances. Natural light flows throughout the home, enhancing the sense of openness across multiple living areas. The oversized primary suite offers a serene retreat with a spa-inspired bathroom featuring a jetted soaking tub and oversized shower stall. The expansive lot provides rare breathing room with opportunities for outdoor entertaining, and basking in your very own garden. The detached garage offers parking, storage, and ADU potential for added flexibility and privacy. Located near top schools, parks & trails, dining, major commuter routes, & Mills-Peninsula Medical Center, this is a rare opportunity to enjoy space, elegance, and lifestyle convenience in the heart of Millbrae.
Listed by Nestor Icaza
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License #02000633
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eXp Realty of California Inc
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650-551-9899
Last updated January 29, 2026
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Source: MLSListings #ML82032229
Listing Facts
TypeSingle-family
NeighborhoodMills Estates
Bedrooms5
Days on Prevu9
Size3,000 sqft
Price per sqft$996
Amenities
Dishwasher
Private Outdoor Space
Pets Allowed
Parking
Location
Mortgage Calculator
Listing History
01/26/2026
Status changed to Active
$2,988,000
01/25/2026
Status changed to Removed from Feed
$2,988,000
01/23/2026
Status changed to Active
$2,988,000
01/23/2026
Status changed to Removed from Feed
$2,988,000
01/22/2026
Listed by eXp Realty of California Inc
$2,988,000
Property Details for 257 S Ashton Avenue
Exterior
Construction
Roof: Shingle
Stories: 1
Year Built: 1956
Year Built Details: 2
Features
Fencing: Gate, Wood
Other Structures: Garage
Patio And Porch Features: Back Yard, Deck, Dog Run/Kennel, Fenced
Measurements
Building Area Total: 3,000
Lot Size Area: 10,500
Lot Size Source: Assessor
Lot Size Square Feet: 10,500
Lot Size Units: Square Feet
Financial
Taxes
Parcel Number: 024-301-170
Interior
Features
Appliances: Dishwasher, Garbage Disposal, Hood Over Range, Oven Range - Gas, Refrigerator, Washer/Dryer
Fireplace Features: Gas Burning, Living Room
Fireplaces Total: 1
Flooring: Hardwood, Tile
Interior Features: High Ceiling, Skylight(s), Wet Bar, Walk-in Closet, Security Gate
Measurements
Living Area: 3,000
Rooms
Bathrooms Full: 4
Bedrooms Total: 5
Parking
Parking
Garage Spaces: 2
Garage: Yes
Parking Features: Detached
Parking Total: 4
Schools
Elementary School
Elementary School District: Millbrae Elementary
High School
High School District: San Mateo Union High
Utilities
Equipment
Cooling: Central Forced Air
Heating: Central Forced Air
Laundry Features: In Utility Room
Sewer: Public Sewer
Utilities: Public Utilities, Water - Public, Solar
Water Source: Public
Frequently Asked Questions
How many bedrooms does this single-family home have?
There are 5 bedrooms in this single-family home at 257 S Ashton Avenue.
Does this single-family home have parking?
Yes, there are 2 parking spaces available for 257 S Ashton Avenue.
How does 257 S Ashton Avenue compare to other single-family homes in Mills Estates?
This single-family home is listed 38% below the average price for single-family homes in Mills Estates and has been on the market for 24 less days than the typical home in this area.
What is the square footage on this single-family home?
According to the MLS, this listing is 3,000 sqft.
257 S Ashton Avenue is a 5-bedroom single-family home for sale in Millbrae CA 94030. Listed on Prevu for 9 days at $2,988,000. This home features 3,000 square feet of living space, located in San Mateo County. The median listing price for single-family homes in this area is $627,000. Additional amenities include private outdoor space, dishwasher, pets allowed, and parking. Explore more single-family home listings in San Mateo County.
Based on information from MLSListings™️ and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.
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