Dolphin Bay is one of Foster City’s more traditional single-family residential areas. Compared with neighborhoods dominated by condos and townhomes, it offers a more consistent detached single-family environment.

Homes commonly offer around 1,800–2,300 sq.ft. of living space, with single-family residences averaging close to 2,000 sq.ft. Lots are typically around 5,500–6,000+ sq.ft..

Because lot sizes across Foster City’s single-family neighborhoods are relatively similar, Dolphin Bay’s appeal comes more from its detached-home character, residential setting and relatively quiet streets.

Sea Colony is one of Foster City’s most single-family-oriented neighborhoods, with many homes dating from the 1970s and 1980s.

Homes commonly range from 2,000–2,700+ sq.ft., with some larger floor plans approaching 3,000 sq.ft. Lots are generally around 5,300–5,700 sq.ft..

Location creates an important difference within the neighborhood. Some homes face the lagoon, while others along the southern edge overlook Belmont Slough, marshland and more open water.

For buyers, waterfront versus interior location, remodeling quality and floor plan can materially affect value.

Bay Vista is one of Foster City’s more established single-family residential neighborhoods, with a smaller amount of attached housing.

Detached homes average close to 1,950 sq.ft., with many residences falling around 1,800–2,300 sq.ft.. Typical lots are approximately 5,500–6,000 sq.ft..

The northern edge is close to the Bay levee and Bay Trail, providing convenient walking and biking access.

Because much of the housing stock is mature, original-condition homes and extensively remodeled properties can differ significantly in market positioning.

Carmel Village is a classic Foster City family neighborhood, with detached single-family homes making up a large portion of the housing stock.

Single-family homes average around 2,070 sq.ft., with many properties offering roughly 1,800–2,400 sq.ft.. Typical lots are approximately 5,600–5,900 sq.ft..

Selected lagoon-front properties directly face the water, and some include private docks. Waterfront homes and interior homes can therefore represent distinctly different products within the same neighborhood.

Bowditch Middle School is located nearby, which adds to the area’s appeal for many family buyers.

Treasure Isle is one of Foster City’s earlier residential neighborhoods, with much of its housing stock dating from the 1960s.

Single-family homes commonly range from 1,500–2,400 sq.ft., although larger residences can approach 3,000 sq.ft.. Typical lots are around 5,200+ sq.ft., while some waterfront or island parcels are larger.

Architectural styles include traditional Ranch, Mid-Century homes and selected residences with Eichler-influenced design elements.

Treasure Isle also contains waterfront homes, condos and apartments, so housing type can create meaningful differences within the same geographic area.

Harbor Side is one of Foster City’s strongest examples of lagoon-oriented residential living, with both single-family homes and townhomes.

Single-family homes average around 1,940 sq.ft., while many larger waterfront homes reach 2,400–2,600+ sq.ft.. Typical lots are around 4,800–5,000+ sq.ft..

Areas such as Whalers Island include directly waterfront residences, where rear patios can connect to the lagoon and, in some cases, private docking areas.

In Harbor Side, water frontage, view, dock access and HOA can matter more than lot size alone when comparing properties.

Marina Point offers a more diverse housing mix than many other Foster City neighborhoods, including single-family homes, townhomes, condos and apartments.

Single-family homes commonly range from 1,500–2,500+ sq.ft., averaging close to 1,950 sq.ft., while typical detached lots are around 5,200 sq.ft.. Townhomes can also be relatively spacious, often approaching 2,000 sq.ft.

Unlike Harbor Side, much of Marina Point’s waterfront edge is occupied by condo and apartment development, while detached homes are concentrated more heavily along interior cul-de-sacs.

As a result, property type, HOA, location and proximity to the water often matter more than lot size alone.

Isle Cove is a distinct Foster City residential community located along the city’s western lagoon system. It is primarily made up of townhomes and other attached residences, offering a lower-maintenance alternative to detached single-family neighborhoods.

Many homes provide roughly 1,300–2,000+ sq.ft. of interior living space, although individual floor plans vary by development and unit type.

Because most properties are attached housing, private lot size is not the most useful comparison metric. Buyers should instead focus on lagoon exposure, patio or outdoor space, parking, HOA dues, reserves and overall community condition.

Isle Cove can be particularly attractive to buyers who want waterfront-adjacent Foster City living without the maintenance responsibilities of a traditional detached home.

The Islands is one of Foster City’s most recognizable lagoon communities, defined by waterways, island-style planning and attached residential development.

Townhomes average around 1,640 sq.ft., with many residences offering roughly 1,500–2,100 sq.ft.. A small number of detached homes can also offer around 2,000 sq.ft. or more.

Because most properties are condo or townhome format, private lot size is not the most useful comparison metric.

Buyers should focus more heavily on waterfront position, lagoon views, private outdoor space, dock access, HOA dues and reserve condition.