Neighborhood Factors

Market Conditions

  • Neighborhood Factors
    Price
    $2.07M
  • Neighborhood Factors
    Undervalued
    $15k(2)
  • Neighborhood Factors
    Appreciation
    0%(2)

(2) City data used

At a glance

Treasure Isle is ranked #6 of 11 neighborhoods in Foster City with an overall score of 3.5/5. Its standout factors are schools (4.5/5, 2nd of 11 in Foster City) and curb appeal (4.0/5), at a median home price of $2.07M, which Houseberry currently rates as overvalued by about $90,000. The trade-offs are safety (2.5/5) and nearby merchants (3.0/5).

Neighborhood Reviews & Questions

Neighborhood Review
Key Words: Civic Center, Central Lake, Live Work Shop

Treasure Isle sits at the dead center of Foster City and functions as its downtown, to the extent that a planned lagoon city has one. Residential, retail, and office all share the same boundary, and it is one of the very few neighborhoods here where living, working, and shopping within walking distance is actually plausible rather than aspirational. The residential heart is three isles: Flying Cloud Isle, Flying Mist Isle, and Shooting Star Isle. Every house on them has direct waterfront access. The homes and apartments that are not on the water are a short walk from Erckenbrack Park and its large waterfront beach. Civic life happens here too. Brewer Island Elementary is on Polynesia Drive, City Hall is in the neighborhood, and the Foster City Library and Community Center sit together on East Hillsdale Boulevard. The genuinely great move is to check out a book and walk across the street to Leo J. Ryan Park, twenty acres wrapped around Central Lake, which is the largest body of water in the whole lagoon system. Boat Park is right there too, and the boat shed behind the teen center rents kayaks, paddleboards, and pedal boats to anyone who wants to get on the water without owning a hull. Costco and the Metro Center shopping sit just over the boundary to the west, close enough to walk if you are motivated and not carrying much. The active caveat: the Recreation Center at 650 Shell Boulevard closed in 2024 for a full rebuild and has been a construction site ever since, with the new building due to open in 2026. Classes and programs moved to the teen center and the community center in the meantime. It is a temporary annoyance in exchange for a permanent upgrade, but if you are touring the neighborhood today, that is what the fencing is about.

See City Review for: Foster City
Houseberry's TakeLocal InsightsQuestions

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Neighborhood Amenities

  • Neighborhood Amenities
    Near good merchants

    3.0

  • Neighborhood Amenities
    Public Spaces

    4

  • Neighborhood Amenities
    Curb Appeal

    4

Overall Amenities score: 3.8

Neighborhood Weather

78%
of possible sunshine
Of all the daylight this spot gets in a year, 78% arrives as sunshine - clouds and fog block the rest.
Treasure Isle ranks 8th of 11 for sunshine in Foster City, and it out-suns about a third of the Bay Area. Its warmest month is September, averaging 74° highs, and it gets about 18 inches of rain a year, the driest in the city.
Average daily high and low temperature
75°60°45°30°JFMAMJJASONDSep 74°
Avg highAvg low
Rank in Foster City
8th of 11
Across the Bay Area
34th percentile
Rain per year
18 in driest in city
Warmest month
Sep 74° avg high
Summer day
56° → 73°F
Winter day
44° → 59°F
Sunshine and temperature figures are 30-year climate averages for this neighborhood's location.

Neighborhood Photos

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Schools serving this Neighborhood

School NameTypeGradesHouseberry School Score
Audubon Elementary PrimaryK-5
4.2/5
Foster City Elementary PrimaryK-5
4.8/5
Brewer Island Elementary PrimaryK-5
5/5
Bowditch Middle Middle6-8
4.6/5
San Mateo High High9-12
3.8/5

Click links for school listing

info at GreatSchools.org

Houseberry School Score Data

from CA Dept. of Education

Houseberry recommends using these scores as only a starting point, and conducting your own investigation into what schools fit best for your preferences. School boundaries are not guaranteed and may change. It is important to contact the appropriate school district to confirm enrollment eligibility before making any decision to move to a neighborhood.

Median Price

Treasure Isle FAQs10 answers

Is Treasure Isle a good place to live?

Treasure Isle ranks 6th of 11 neighborhoods in Foster City with an overall Houseberry score of 3.5 out of 5. Its strongest factors are schools (4.5/5) and curb appeal (4.0/5). The trade-offs are safety (2.5/5) and nearby merchants (3.0/5).

Is Treasure Isle safe?

Treasure Isle, Foster City scores 2.5 out of 5 on Houseberry's Safety Score, ranking 7th of 11 neighborhoods in Foster City.

What do homes in Treasure Isle cost?

The median home price in Treasure Isle, Foster City is $2.07M, compared with $2.15M for Foster City as a whole. Houseberry currently rates it overvalued by about $90,000 against comparable neighborhoods.

Are home prices in Treasure Isle rising or falling?

The median home price in Treasure Isle, Foster City is down about 1.3% over the past 12 months, from $2.1M to $2.07M. The full 12-month history is charted in the Median Price section on this page.

Which schools serve Treasure Isle?

Schools serving Treasure Isle, Foster City include Audubon Elementary (4.2/5), Foster City Elementary (4.8/5), Brewer Island Elementary (5.0/5), Bowditch Middle (4.6/5) and San Mateo High (3.8/5).

What is the weather like in Treasure Isle?

Treasure Isle, Foster City receives 78% of its possible sunshine, 8th of 11 in Foster City. Summer days run 56° to 73°F and winter days 44° to 59°F, September is the warmest month and rainfall averages about 18 inches a year.

Is Treasure Isle walkable to shops and restaurants?

Treasure Isle, Foster City scores 3.0 out of 5 for nearby merchants and 4.0 out of 5 for public spaces. Its overall amenities score is 3.8 out of 5, 6th of 11 in Foster City.

What is Treasure Isle known for?

Treasure Isle, Foster City is associated with Civic Center, Central Lake and Live Work Shop. Its highest-scoring factors are schools (4.5/5) and curb appeal (4.0/5).

How does Treasure Isle compare to other Foster City neighborhoods?

Treasure Isle ranks 6th of 11 neighborhoods in Foster City. It ranks 2nd of 11 in Foster City for schools (4.5/5) and scores lowest on safety (2.5/5). The next-ranked neighborhoods in Foster City are Bay Vista and Metro Center.

What are the downsides of living in Treasure Isle?

Treasure Isle, Foster City scores lowest on safety (2.5/5) and nearby merchants (3.0/5).

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Top Neighborhoods in Foster City, CA

1st
Neighborhood Iamge
Dolphin Bay, Foster City, CA
Overall Score : 4.3
Dolphin Bay is Foster City's answer to balance. Primarily single family homes, s... See Full Page
2nd
Neighborhood Iamge
Sea Colony, Foster City, CA
Overall Score : 3.9
Sea Colony is the biggest neighborhood in Foster City and the one most completel... See Full Page
3rd
Neighborhood Iamge
Harbor Side, Foster City, CA
Overall Score : 3.9
Street by street, Harbor Side puts more people on the water than almost any othe... See Full Page

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Contact Houseberry's 2026 Agent Pick for Treasure Isle
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All information provided on this website including but not limited to - school ratings, safety, amenities, user opinions, and property data - is for general informational purposes only. We do not guarantee its reliability, accuracy, or completeness. Users should independently verify information and consult appropriate professionals as needed. By using this website, you agree Houseberry is not responsible for actions, decisions, or consequences arising from reliance on the information provided

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Bay East ©2025. CCAR ©2025. bridgeMLS ©2025. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, or CCAR MLS, or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated at August 14, 2026 12:00 AM

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