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foster city neighborhood guide · property nerds® at compass
Sea Colony & Port Royal, Foster City Homes for sale, recent sales and a Property Nerd’s guide
Foster City's south end, the city's Neighborhoods 7 and 8: island-named lanes east of Edgewater Boulevard and harbor-named streets around Port Royal Avenue, between Marina Lagoon and Belmont Slough.
Sea Colony & Port Royal by the numbers
sea colony & port royal by the numbers · live from the mls
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Calculated in your browser from MLS data for Sea Colony & Port Royal (approximate outline traced from the boundary streets). Sales are single-family homes, townhomes and condos.
homes in sea colony & port royal · live from the mls
Homes for sale, for rent and recently sold in Sea Colony & Port Royal
Every active listing, rental and closed sale in Sea Colony & Port Royal 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 (Sea Colony & Port Royal (approximate outline traced from the boundary streets)); it may not match every local definition.
the story
How Sea Colony & Port Royal came to be
Foster City grew from T. Jack Foster's 1961 master plan, which laid out a cluster of nine residential neighborhoods around a commercial and civic center on Brewer Island's salt ponds. The city's General Plan says the ponds were drained in the early 1960s and some 18 million tons of fill raised the ground about four feet over soft bay mud 45 to 80 feet deep. The lagoon was dug in step with the neighborhoods, starting in Neighborhoods 2 and 3 in 1964 and finishing in Neighborhoods 6 and 7. Foster City incorporated in April 1971, and Census estimates put most homes here in the 1970s and 1980s.
The city numbers its neighborhoods; listing names come from the recorded tracts. County parcel records show Neighborhood 7 built as several tracts: Sea Colony (Somerset, Hanbury, Cornwallis and Nottingham lanes), Antigua (St. Kitts, St. Vincent, Dominica and Barbados lanes), Pitcairn (Trinidad, Martinique, Malta and Gibraltar lanes), Plum Island (Grenada and Aruba lanes) and Longwater (San Miguel, Santa Catalina, San Clemente and Santa Cruz lanes), plus the Schooner Bay apartments on Timberhead Lane. Neighborhood 8 is mostly Foster City neighborhood tracts around Port Royal Avenue, with the Lantern Cove apartments on Rock Harbor Lane. MLS area names that land here include Sea Colony, Dolphin Bay, Nantucket Cove and Longwater.
Water wraps the south end. Marina Lagoon, a former slough the City of San Mateo converted to a lagoon, runs along the west side; Belmont Slough and the bay levee close the south and east. About 57 acres of wetlands along Belmont Slough were set aside as a state-owned wildlife refuge in 1976, on the city's southwest side. The city's levee rebuild, funded by the Measure P bonds voters approved in 2018, reached final completion in February 2024, and the levee-top pedway circles the city for about 7.9 miles.
streets and homes
The streets and the houses
Edgewater Boulevard splits the area. East of it, Neighborhood 7's lanes curl around lagoon arms with island names: Trinidad, Aruba, Grenada, Barbados, Dominica, Martinique, Malta, Capri, Pitcairn and the St. Kitts, St. Vincent, St. Thomas and St. Croix lanes, plus seven California Channel Islands (San Miguel, Santa Rosa, Santa Cruz, Anacapa, Santa Catalina, San Clemente and San Nicholas lanes), while the Sea Colony tract uses English place names such as Somerset, Nottingham and Gateshead. West of Edgewater, Neighborhood 8 runs on Port Royal, Boothbay, Monterey and Chesapeake avenues, with streets and courts named for harbors and bays: Nantucket, Pensacola, Galveston, Biscayne, Hatteras, Tampa, Sandy Hook, Hudson Bay, Bodega and Morro.
County parcel records show about 1,440 standard single-family lots here, with a median of about 5,800 sq ft, and about 170 smaller lots: Williams Lane (about 3,400 sq ft) and the Binnacle, Charthouse, Dory, Bowsprit and Skipjack lanes (about 1,900 sq ft), which MLS records list as a mix of townhouses and single-family homes. There are no condominium parcels, but two rental complexes on Timberhead Lane and Rock Harbor Lane add apartments, which is why Census estimates for the matching tracts count about 60% detached houses, 14% attached single-family units and about 19% of units in buildings of five or more. In Foster City, privately owned residential streets are generally named Lane, and about nine in ten Neighborhood 7 homes have a Lane address (county records), so check whether a given Lane is private and which association maintains it.
Every home here sits on fill. The state's 2018 seismic hazard maps put essentially all of these parcels in a liquefaction zone, and FEMA's National Flood Hazard Layer shows the homes in Zone X, an area with reduced flood risk due to the levee, under a Letter of Map Revision (case 24-09-0381P) effective September 11, 2026. The state's tsunami hazard map for emergency planning leaves the homes outside its hazard area.
streets in sea colony & port royal
- Edgewater Boulevard
- Beach Park Boulevard
- Port Royal Avenue
- Boothbay Avenue
- Monterey Avenue
- Chesapeake Avenue
- Pitcairn Drive
- Sea Cloud Drive
- Trinidad Lane
- Grenada Lane
- Aruba Lane
- Somerset Lane
- Hanbury Lane
- St. Kitts Lane
- Anacapa Lane
- Bahama Lane
- Melbourne Street
- Williams Lane
- Thatcher Lane
- Binnacle Lane
- Winchester Court
- Jamaica Street
- Pensacola Street
- Laguna Circle
- Rock Harbor Lane
- Timberhead Lane
parks and places
Parks, shops and landmarks near Sea Colony & Port Royal
- park
Sea Cloud Park
The city's youth-sports base at Pitcairn Drive and Sea Cloud Park Drive: more than 23 acres of baseball diamonds, soccer fields, lawn, play equipment, a snack shack, batting cages and restrooms.
- park
Boothbay Park
At Edgewater Boulevard and Boothbay Avenue, listed by the city at 11.2 acres with a sand volleyball pit, lawn, a basketball court, four tennis courts, a tot area, barbecues, a small amphitheater, restrooms and a rentable covered picnic pavilion.
- park
Port Royal Park
About 4 acres of soccer fields, restrooms, play equipment and walkways at the city's southernmost point.
- park
Gateshead Park and the levee
A small park by Belmont Slough with shade trees, drinking fountains and picnic tables, next to the levee-top walkway.
- shopping
Edgewater Place
A neighborhood shopping center named in the city's General Plan, on Edgewater Boulevard just south of Beach Park Boulevard inside Neighborhood 8 (county records show about 9 acres). Metro Center's larger stores are about 0.8 to 1.3 miles straight-line north.
- landmark
Belmont Slough wildlife refuge
About 57 acres of state-owned wetlands set aside in 1976, which the city's General Plan describes as feeding and resting habitat for migratory shorebirds.
schools and commute
School districts and getting around
School districts
Census school-district maps put every home here in the San Mateo-Foster City School District (elementary and middle schools) and the San Mateo Union High School District; a Belmont-Redwood Shores strip on those maps covers only levee and marsh. No public school sits inside these two neighborhoods; Foster City Elementary (461 Beach Park Boulevard) is just across Beach Park Boulevard in Neighborhood 9. Foster City has no high school, and the city lists Aragon, Hillsdale and San Mateo high schools as serving Foster City. Attendance boundaries change, so check the exact address with each district.
Foster City guide: school districts · San Mateo Union High guide
Getting around
- Caltrain: Belmont station is about 0.9 to 1.4 miles straight-line and Hillsdale station (50 E. 28th Avenue, Zone 2) about 1.3 to 1.9 miles.
- SamTrans Route 251 runs between Foster City and Hillsdale Mall, school-day Route 57 runs from Edgewater/Beach Park to Hillsdale High, and the weekday FCX bus runs to San Francisco every 45 minutes in the morning and afternoon peaks (routes revised August 2, 2026).
- SR-92 has partial interchanges at Edgewater Boulevard and Fashion Island Boulevard, and US-101 is reached at East Hillsdale Boulevard (city General Plan).
- Walk or bike the levee-top pedway, about 7.9 miles around the city, from Gateshead Park or Port Royal Park.
nerd notes
Buying or selling in Sea Colony & Port Royal: what we check
Buying here
- Read the HOA documents: private streets in Foster City are generally named Lane, and townhouse and small-lot lanes typically have associations that may handle roofs, paint, landscaping or the street. Check current dues, reserves, special assessments, insurance and rental rules.
- Lagoon lots: the city puts maintenance of the lagoon-adjacent part of a property on the owner. Have the bulkhead, any dock and the drainage looked at, and confirm what the HOA covers versus the owner.
- Flood: FEMA's NFHL shows these homes in Zone X behind the levee under a map revision effective September 11, 2026, and the city says flood insurance stays optional for federally backed mortgages. Get a quote anyway, confirm the zone for the parcel, and note the Measure P levee bonds on the property tax bill.
- Ground: essentially every parcel is in a state liquefaction zone (fill over bay mud). Ask the inspector about settlement, slab or foundation cracks and utility connections, and read the natural hazard disclosure.
- Confirm the city on listings near the west edge: the blocks across Marina Lagoon are the City of San Mateo, and San Mateo's Mariner's Island and Edgewater Isle, to the northwest, share Foster City's 94404 ZIP.
Selling here
- Order the HOA resale documents early for any Lane address or townhouse; buyers and lenders ask for them first.
- For lagoon frontage, gather bulkhead, dock and drainage repair records.
- Have FEMA's case number (24-09-0381P), the Zone X determination and the liquefaction disclosure ready.
- Name the tract (Sea Colony, Antigua, Pitcairn, Plum Island, Longwater) or Port Royal and the city's neighborhood number so buyers searching either way find the home.
nerd noteCommissions are always negotiable, and we offer bundled services, so ask us what's included.
faq
Sea Colony & Port Royal questions, answered
What is the difference between Neighborhood 7 and Neighborhood 8?
Neighborhood 7 is east of Edgewater Boulevard, with island-named lanes around lagoon arms and Sea Cloud Park. Neighborhood 8 is west of it along Marina Lagoon, with Port Royal Avenue, Boothbay Park, Port Royal Park and the Edgewater Place center.
What kinds of homes are in Sea Colony and Port Royal?
Mostly detached single-family houses on lots of about 5,800 sq ft, about 170 townhouse and small-lot homes on nautical-named lanes, and two rental apartment complexes. There are no condominium parcels.
Is it in a flood zone?
FEMA's current flood data show these homes in Zone X, an area with reduced flood risk due to the levee, under a map revision effective September 11, 2026. Confirm the zone for the specific parcel.
Which schools serve Sea Colony and Port Royal?
The San Mateo-Foster City School District and the San Mateo Union High School District. Foster City Elementary is just across Beach Park Boulevard. Check the exact address with each district.
Is there an HOA?
It depends on the street. Private streets in Foster City are generally named Lane, so a Lane address may share a private street and an association; homes on public streets such as Port Royal Avenue may have none. Check the title report and HOA disclosures.
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