Laddville (or "Laddsville") is a former settlement in the western Livermore Valley of Alameda County, California.
It was located east of the settlement which eventually became Livermore.
[1] Alphonso Ladd settled in the Sunol Valley in 1850.
[2] In 1868, a general store, restaurant, and livery stable were established.
[1] Laddsville was almost entirely destroyed by a fire in 1871,[2] and the businesses within were merged into Livermore,[5] whose city limits later grew to include its former location.