Incredible value with upside potential - bring an offer! Welcome home to views in Westwood Knolls! This inviting 3-bedroom, 2-bath home offers 1,720 square feet of living space on a generous 6,790 square foot lot. The spacious family room showcases vaulted ceilings and floor-to-ceiling windows with a sliding door that opens to the large, level backyard with outstanding views. A separate living room with an adjoining dining area adds flexibility for both entertaining and everyday living. With two fireplaces, generous living spaces, and a thoughtfully designed floor plan, the home combines comfort with versatility. Freshly painted and professionally landscaped, it is move-in ready while also providing an excellent canvas for your updates and personal touches as desired. Ideally situated in a sought-after neighborhood, the property is close to schools, including top-rated Hillsdale High School, with convenient access to CalTrain, Highways 92, 101, and 280. There is a large offering of shops, restaurants, and entertainment options nearby, including Hillsdale Shopping Center. 217 W 40th Avenue offers an exceptional opportunity in the heart of San Mateo for the best in living indoors and outdoors!
- MLS# ML82028991
- Date Listed12/08/2025
- Days on Realty 2 Days
- Bedrooms 3
- Bathrooms 2 Full baths
- Lot Size 0.16 acres (6,824 sq. ft)
- County San Mateo
- Year Built 1950
- Square Feet 1,720 sq. ft
- Price Per Sq. Ft $1046.51
Interior Features
- Flooring Laminate, Tile
- Cooling Ceiling Fan(s), Central Air
- Heating Forced Air
Exterior / Lot Features
- Roof Shingle
- Lot Size Acres 0.16
- Lot Size SQFT 6,824.00
- Lot Features -
Financial Considerations
Sales & Tax History
Source: Public Records
| Street Address | Beds | Baths | Sold Date | List Price | Valuation Date | Valuation Price |
|---|---|---|---|---|---|---|
| 128 42nd Avenue | Listing | 4 | 2 | Oct 14, 2025 | $1,688,000 | Feb 23, 2024 | $1,944,750 |
| 3920 Fernwood Street | Listing | 3 | 1 | Oct 31, 2025 | $1,420,000 | Feb 23, 2024 | $1,523,500 |
| 18 Culver Court | Listing | 2 | 1 | Oct 17, 2025 | $1,290,000 | Feb 23, 2024 | $1,446,000 |
| 2671 Isabelle Avenue | Listing | 3 | 2 | Oct 11, 2025 | $1,849,500 | Dec 26, 2023 | $1,984,500 |
| 2671 Isabelle Avenue | Listing | 3 | 2 | Oct 11, 2025 | $1,849,500 | Dec 26, 2023 | $1,984,500 |
| 217 W 40th Avenue | Listing | 3 | 2 | Oct 15, 2025 | $1,445,000 | Dec 28, 2020 | $1,605,000 |
| 217 West 40th Avenue | Listing | 3 | 2 | Oct 15, 2025 | $1,445,000 | Feb 23, 2024 | $1,983,250 |
| 2671 Isabelle Avenue | 3 | 2 | Oct 16, 2025 | $1,698,000 | Dec 10, 2025 | - |
| 2671 Isabelle Avenue | Listing | 3 | 2 | Oct 16, 2025 | $1,698,000 | Dec 26, 2023 | $1,984,500 |
| 18 Culver Court | Listing | 2 | 1 | Oct 17, 2025 | $1,099,000 | Feb 23, 2024 | $1,446,000 |
Population & Environment
Source: Sperling's Best Places
| Zip | City | County | National | |
|---|---|---|---|---|
| Population | 43,609 | 104,813 | 756,845 | 335,858,263 |
| Population Density | 7,779 | 8,428 | 1,688 | 95 |
| People per Household | 2.5 | 2.5 | 2.8 | 2.6 |
| Median Age | 42.5 | 42 | 42 | 39.1 |
| Median Income | $140,767 | $133,726 | $129,972 | $66,222 |
| Average Income | $73,316 | $69,895 | $66,333 | $35,475 |
| Cost of Living Index | 131 | 132 | 143 | 100 |
| Zip | City | County | National | |
|---|---|---|---|---|
| January Avg. High Temp | 39.1°F | 42.9°F | 42.9°F | 22.6°F |
| July Avg. High Temp | 80.8°F | 70.5°F | 70.5°F | 86.2°F |
| Annual Precipitation | 20.16" | 23.35" | 23.35" | 38" |
77/100
Very Walkable
Walk Score ®
45/100
Some Transit
Transit Score ®
29/100
Bikable
Bike Score ®
Overview
Most errands can be accomplished on foot. A few nearby public transportation options. Minimal bike infrastructure.Transit Summary
9 nearby routes: 9 bus, 0 rail, 0 other
Walkability averages in the surrounding area
The average walkability score in the surrounding area is Walk Score: 44/100, Transit Score: 13/100, Bike Score: 46/100.
Property Change History
Points of Interest near 217 W 40th Avenue, San Mateo, CA 94403
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Frequently Asked Questions for 217 W 40th Avenue
Source: Realty.com
217 W 40th Avenue, San Mateo, CA 94403 is a Single Family 1,720 sq. ft. home listed for sale. Realty.com has 60 photos available of this 3 bed, 2 bath house, listed at $1,800,000. View sales and tax history, use our mortgage calculator and more on Realty.com
Realty.com has 60 photos of 217 W 40th Avenue.
Our records indicate that 217 W 40th Avenue was built in 1950.
The full address for this home is 217 W 40th Avenue, San Mateo, CA 94403.
217 W 40th Avenue has been listed on Realty.com since Mon December 08, 2025
Most errands can be accomplished on foot. A few nearby public transportation options. Minimal bike infrastructure.
The average walkability score in the surrounding area is Walk Score: 44/100, Transit Score: 13/100, Bike Score: 46/100.
There are 1 schools assigned to this home. Check out the schools near 217 W 40th Avenue. Hillsdale High School (Grades: 9 - 12)
Listing provided courtesy of:
Christie's International Real Estate Sereno
(tel: 408-335-1400)
Listing agent:
Alana Corso
(tel: 650-504-0270)
(#MLL5062185)
This content last refreshed on 2025-12-10 02:57:50. Some properties which appear for sale on this web site may subsequently have sold or may no longer be available.
Export listing data of 217 W 40th Avenue, San Mateo, CA 94403 : MLS# ML82028991