Sewer Lateral Requirements in the Peninsula (Burlingame, Hillsborough, Millbrae, Pacifica, South San Francisco, and San Mateo)

• Sewer laterals are private pipes connecting a home to the city’s main sewer line. Several Peninsula cities require sellers to complete a sewer lateral inspection before closing escrow.

• Inspection requirements and costs vary by city. Testing typically costs about $300-$700, and Hillsborough requires video inspection. San Mateo also offers 50% grants for eligible sewer lateral repairs or replacement.

• Repairs can be significant. In Burlingame, approximately 50% of homes tested since 1986 have needed repair or replacement, with reported costs ranging from about $1,500 to $12,000.