San Lorenzo has been a desirable place to live since 1847, when
squatters built their cabins on the north side of San Lorenzo Creek,
then part of two Mexican ranchos. When landowners could not evict their
unwanted guests, the settlement known as Squatterville grew into a town
at Four Corners, now the intersection of Hesperian and Lewelling
Boulevards. Named San Lorenzo in 1854, over the next 90 years it
developed into a close-knit rural community. The great shipyard boom
during World War II brought many new families to one of the first
self-contained communities of tract homes in the nation, initially
developed by David D. Bohannon. This tract, San Lorenzo Village, helped
swell the population of this unincorporated area, striving to hold its
own between the urban encroachment of San Leandro and Hayward.