belmont neighborhood guide · property nerds® at compass
Island Park, Belmont Homes for sale, recent sales and a Property Nerd’s guide
Belmont's only neighborhood east of US 101: about 122 homes from 1990 and 1997 on private lanes off Island Parkway, beside the Belmont Sports Complex and the slough trails, in FEMA flood Zone AE.
Island Park by the numbers
island park by the numbers · live from the mls
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Calculated in your browser from MLS data for Island Park (approximate outline traced from the boundary streets). Sales are single-family homes, townhomes and condos.
homes in island park · live from the mls
Homes for sale, for rent and recently sold in Island Park
Every active listing, rental and closed sale in Island Park from the MLS, updated automatically, with a map of the neighborhood outline.
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Listings come from MLSListings and other MLSs through IDX and show their listing brokerage; confirm details with the listing agent. The map outline is the neighborhood boundary used by our listing search (Island Park (approximate outline traced from the boundary streets)); it may not match every local definition.
the story
How Island Park came to be
Island Park is the part of Belmont on the bay side of US 101. The city's neighborhood map calls it simply East of 101, plus a small piece named Farallon, about 140 acres in all. The ground is bay-edge land: the USGS liquefaction map in the city's hazard layers shows it on bay mud. The name comes from a recorded map called Island Park (county map book 118, pages 61 to 64), whose lots hold the offices on Island Parkway and Clipper Drive, a hotel on Concourse Drive and, as Lot 39, the city's Belmont Sports Complex.
The homes came in two small subdivisions at the north end. Farallon at Island Park (book 120, page 9) put 39 detached houses and 31 townhomes on Treasure Island Drive and Farallon Drive, with assessor years of 1990. California Cottages (book 126, pages 80 to 83) added 52 detached houses in 1997 on Northampton, Newcastle, Manchester, London, Sotocastle and Frog Valley lanes and on Clipper Drive. That is the whole residential neighborhood: about 122 homes.
Water defines it. Belmont Creek passes under the freeway and runs through the south part of the area on its way to the slough, the city's trail data shows a paved Belmont Slough Trail along the water on the north and east sides, and a levee path along O'Neill Slough marks the Foster City line. FEMA's flood map puts 115 of the 122 home lots in Zone AE. In March 2026 the City Council approved early study work on joining the Redwood Shores sea level rise protection project led by Redwood City; city staff described the goal as moving Island Park from Zone AE to Zone X (a local news report). It is a study, not a construction commitment.
streets and homes
The streets and the houses
Island Parkway leaves Ralston Avenue just east of US 101 (city street records) and runs north past the Sports Complex to Concourse Drive, which leads to Clipper Drive. The residential lanes branch off those two streets, and all of them are private in the city's street records: Treasure Island Drive and Farallon Drive in Farallon at Island Park, and Northampton, Newcastle, Manchester, London, Sotocastle and Frog Valley lanes in California Cottages. Private streets usually mean a homeowners association handles paving, lighting and landscaping, so expect documents and dues.
The houses are compact and vertical. The median lot is about 2,570 sq ft, 101 homes are two stories and 21 are three, bedrooms run from two to four, and the median size is about 1,650 sq ft on the assessor roll. The 31 townhomes are on Farallon Drive and Treasure Island Drive. Everything is zoned PD (planned development), so additions and accessory units are governed by the development's approvals and HOA rules as well as city code.
South of the homes, Island Park is a working district: hotels on Concourse Drive, Shoreway Road and Sem Lane, offices, the city's corporation yard on Sem Lane, and the Sports Complex. Shoreway Road runs along the freeway to the San Carlos line.
streets in island park
- Island Parkway
- Concourse Drive
- Concourse Place
- Clipper Drive
- Clipper Court
- Treasure Island Drive
- Farallon Drive
- Northampton Lane
- Newcastle Lane
- Manchester Lane
- London Lane
- Sotocastle Lane
- Frog Valley Lane
- Shoreway Road
- Sem Lane
parks and places
Parks, shops and landmarks near Island Park
- park
Belmont Sports Complex
At 550 Island Parkway, on a city parcel of about 6 acres. Public maps show ball fields, a soccer field, a playground and picnic areas, and the city's facilities list a conference center building there.
- park
Belmont Slough Trail
A paved bike path of about 0.7 mile in the city's trail data, along the water on the north and east sides of the neighborhood, with a separate 0.3-mile pathway around the Sports Complex.
- park
Belmont Creek Trail
About 0.9 mile of paved and dirt trail along Belmont Creek in the south part of the area, near Shoreway Road and Sem Lane (city trail data).
- landmark
Oracle Parkway bike bridge
A short bike and pedestrian bridge from Island Park across the channel to Oracle Parkway in Redwood Shores, mapped in the city's trail data.
- shopping
Ralston Avenue
The nearest shopping is on Ralston Avenue just west of US 101, about half a mile straight-line from the homes.
schools and commute
School districts and getting around
School districts
Census school-district maps put Island Park in the Belmont-Redwood Shores School District for elementary and middle school and the Sequoia Union High School District for high school. There is no school in the neighborhood. The district's Nesbit School (500 Biddulph Way) is about 0.65 mile straight-line west of the homes, across US 101, and Central Elementary School (525 Middle Road) is about a mile. Attendance boundaries change, so check the exact address with each district.
Belmont-Redwood Shores guide · Sequoia Union guide · Silicon Valley school districts
Getting around
- US 101's Ralston Avenue interchange is about 0.5 mile straight-line from the homes, via Island Parkway.
- Belmont Caltrain station (995 El Camino Real) is about 0.9 mile straight-line from the homes, west along Ralston Avenue; Hillsdale station is about 1.9 miles.
- Bikes: Island Parkway is a mapped bike route, the Belmont Slough Trail circles the water, and the Oracle Parkway bike bridge connects to the Redwood Shores path network.
- SamTrans routes ECR, 260 and 397 stop at the Belmont Caltrain station, about 0.9 mile straight-line away.
nerd notes
Buying or selling in Island Park: what we check
Buying here
- Flood insurance: FEMA's flood map (checked October 2026) shows 115 of the 122 home lots in Zone AE with a base flood elevation of 10 feet, so a federally backed mortgage will usually require flood insurance. Get the elevation certificate, and ask whether the lot has a FEMA letter of map amendment or revision.
- Follow the levee study. The city is evaluating whether Island Park can join the Redwood Shores sea level rise project; a move to Zone X would take years and is not decided. Ask the seller and HOA who maintains any shoreline protection next to the lots.
- Soils: the USGS map in the city's hazard layer rates nearly every home lot very high for liquefaction. Read the seismic hazard disclosure and ask about the foundation design.
- Private streets and HOAs: get the CC&Rs, budget, reserve study and minutes, and check current dues; roads, lighting and common areas are not city-maintained here.
- PD zoning and small lots limit additions and ADUs. Confirm what the development approvals and HOA allow before counting on more space.
Selling here
- Put the elevation certificate, flood insurance history and any FEMA letter for the lot in the disclosure package up front; flood cost is the first question buyers ask here.
- Deliver HOA documents early, including anything on shoreline or levee maintenance and the city's levee study.
- Market the location precisely: the trail on the water, the Sports Complex and the approximate straight-line distance to Caltrain and US 101.
- Note the subdivision (Farallon at Island Park or California Cottages), the year built and the home type (detached or townhome); buyers compare them directly.
nerd noteCommissions are always negotiable, and we offer bundled services, so ask us what's included.
faq
Island Park questions, answered
Is Island Park part of Belmont?
Yes. It is in the City of Belmont, ZIP 94002, the only Belmont neighborhood east of US 101. Foster City is across the line to the north and Redwood City's Redwood Shores is to the east.
Is Island Park in a flood zone?
Yes. FEMA's current flood map puts 115 of the 122 home lots in Zone AE, the high-risk zone, with a base flood elevation of 10 feet; a few lots are in shaded Zone X. Check the map for the exact lot.
Is a levee coming?
Not yet. In March 2026 the City Council approved early study work on joining Redwood City's Redwood Shores sea level rise protection project, with the stated aim of moving Island Park to Zone X. The study does not commit the city to construction.
What kinds of homes are there?
About 122 homes: 91 detached two- and three-story houses and 31 townhomes, built in 1990 (Farallon at Island Park) and 1997 (California Cottages), all on private lanes.
Which schools serve Island Park?
Census maps place it in the Belmont-Redwood Shores School District and the Sequoia Union High School District. Nesbit School is the closest district school, about 0.65 mile away. Confirm the address with the districts, because boundaries change.
talk to a property nerd
Thinking about Island Park? Let's run your numbers.
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