Tile Flooring in Larkspur

Substrate Preparation

The City's Planning department administers a Slope Use Permit (Municipal Code §18.34.060) for development on steep terrain, which requires a preliminary soils and geological report prepared by a licensed geotechnical engineer addressing slope stability, including recommendations for foundations and slabs on grade.

Regionally, crawl space use in Pacific-division construction has declined long-term and dropped sharply only in the past decade, against 89.9% slab in new 2024 builds — so raised floors turn up more often in Larkspur's 1950s, 1960s, and 1970s stock than in anything recent. We confirm on site.

Over a wood-framed floor, tile is a deflection question before it is a tile question. A floor system that flexes more than the assembly allows will crack grout first and tile second, regardless of how well it was set. We check joist span and subfloor thickness, add a second layer or a proper uncoupling membrane where the structure calls for it, and tell you if the answer is that the floor needs stiffening.

Source: NAHB analysis of the Census Bureau Survey of Construction, foundation type by region (2024)

Larkspur Homes We Work In

Larkspur sits at about 10 feet in Marin County. ACS 2020-2024 5-year estimates put 59.4% of Larkspur's 6,431 housing units in the 1950-1979 range, split almost evenly between the 1970s (23.2%) and 1960s (23.1%), with a further 9.6% predating 1940. In Larkspur's 1950s, 1960s, and 1970s homes, the framing was often designed to the code of its day rather than to today's large-format tile, so the deflection check matters more, not less. It is the reason we survey the floor structure in older homes before quoting tile.