Flooring in Burlingame

Conditions in Burlingame

Derived statistic, not a published normal: averaging NOAA Local Climatological Data hourly observations at San Francisco International Airport, the nearest reporting station, across the ten Julys 2015-2024 (Local Standard Time) gives 83.5% relative humidity at 04:00 (n=690) and 61.3% at 16:00 (n=627) — a daily swing of about 22 points, among the narrowest of the peninsula stations checked. NOAA's published table gives Sacramento a July afternoon mean of 29%.

The nearest NOAA station, San Francisco International Airport, records 1991-2020 January normals of 58.0°F average high and 44.5°F average low, with an annual precipitation normal of 19.6 inches. Winter conditions shift the same variables the other way — longer cure times, and floors installed at their contracted size that will grow once the house warms.

Burlingame sits on the bay side of the northern peninsula, within the marine layer's reach. San Francisco International Airport, the nearest station, normals at a July high of 72.6°F — between San Francisco Downtown at 66.3°F and Redwood City at 81.0°F further south. Burlingame's marine influence narrows the seasonal humidity swing a new floor has to live through.

Subfloor and Foundation Work

Burlingame's ZIP 94010 appears on the state's 2025 Earthquake Brace + Bolt eligibility list. The California Residential Mitigation Program states that 'an EBB seismic retrofit is only done on wood-framed, pre-1980 homes with a raised foundation,' targeting cripple walls in crawl spaces beneath the structure. Burlingame is the strongest candidate in this service area for that construction type after San Francisco itself: 29.6% of its 13,798 housing units were built in 1939 or earlier and 79.3% predate 1980 — the highest pre-1980 share of the ten cities here. Even so, EBB ZIP eligibility is set on seismic hazard and housing age rather than foundation type, and no source publishes a measured raised-versus-slab share for Burlingame, so the age figures indicate likelihood rather than proportion and no share is claimed.

A raised floor opens the material list back up — a sound wood subfloor accepts nail-down, glue-down, and floating installations alike. The condition of the crawlspace is what we check first, since a moisture problem underneath will eventually reach whatever we put on top.

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

Burlingame Homes We Work In

ACS 2020-2024 five-year estimates count 13,798 housing units, of which 29.6% (4,086 units) were built in 1939 or earlier — the second-highest pre-1940 share in this service area after San Francisco. A further 11.3% date to the 1940s, 13.6% to the 1950s and 12.9% to the 1960s. Only 10.4% was built in 2000 or later. Burlingame's pre-1940, 1950s, and 1960s homes tend to bring their own surprises once the old floor comes up — subfloor thickness, previous patches, and height differences at doorways. We plan transitions and thresholds around what's actually under there rather than around a nominal drawing.