Foster City is unlike any other city on the San Francisco Peninsula because the ground it sits on was not there a century ago. The entire city was built starting in the early 1960s on engineered fill placed over tidal mudflats along San Francisco Bay. That fill has been settling and shifting ever since, and it continues to move with every wet winter and dry summer. Asphalt and concrete surfaces on this ground crack, heave, and develop soft spots at a faster rate than on native hillside soils, and contractors who do not understand the underlying cause often make repairs that fail within a few seasons.

The city's lagoon system adds another layer of challenge. A large number of Foster City homes back directly up to the man-made waterways, keeping the soil near those properties saturated for much of the year. The Bay air brings consistent moisture even in dry months, which shortens the effective life of unsealed asphalt. Properties near the lagoons also face the highest flood risk in the city, which means drainage grading around driveways and parking areas is not optional - it is a practical necessity for protecting the base under any paved surface.

Foster City is a small, dense planned community in San Mateo County, covering about four square miles of land along the western edge of San Francisco Bay. It was incorporated in 1971, built entirely from scratch on fill placed over tidal mudflats beginning in the early 1960s. The city is known for its extensive network of man-made lagoons, which wind through residential neighborhoods and give many properties a waterfront character unusual for a suburban Peninsula city. Most of the housing stock consists of single-family homes, townhomes, and condominiums built during the 1960s and 1970s, making it one of the more uniformly mid-century communities in the county. Major employers including Visa Inc. and Gilead Sciences have large campuses here, and the city consistently ranks among the higher-income communities in the Bay Area.

Leo J. Ryan Memorial Park anchors the waterfront along the Bay, providing open space and trail access for residents. Foster City Boulevard serves as the main internal corridor connecting residential neighborhoods to commercial areas, city offices, and the highway. US Highway 101 runs along the western edge of the city and is the primary route in and out of town. The combination of planned street layouts, lagoon-adjacent properties, and high-quality housing stock draws homeowners who invest in maintaining their properties well. We serve Foster City regularly and also cover neighboring San Mateo and Belmont.