Eichlers in Pleasanton?

My wife & I recently bought a modern style house in Pleasanton Heights (about 1/2 mile east of downtown Pleasanton). Does anyone know if Eichler actually built in Pleasanton, or are these homes from another developer who used a similar style in the 50's? There's a map on this website which shows Eichler built in Castro Valley, Walnut Creek and Concord, but not Pleasanton, which leads me to believe it was another builder.

A few specifics on our house:
built 1956
Post and beam contruction
Approx 1250 sq ft
3 bdr, 2 bath
galley kitchen
no atrium
Raised foundation w/ crawlspace underneath (not typical concrete slab)
Vaulted ceiling w/ no attic (we recently added SPF roof to help w/ heat transfer)

Thanks - DB