THIS LOT IS TO THE RIGHT OF THE RESIDENCE AT 4146!! (BETWEEN 4146 & 4132 LOS ARABIS) PLEASE DO NOT DISTURB RESIDENTS. Build your dream home on this beautiful 1.54 acre lot! Lush foliage and oak trees in this Upper Happy Valley neighborhood lot will allow the new homeowner serenity and privacy. A country feel yet minutes to charming downtown Lafayette and Orinda. Easy access to BART and Hwy 324. This lot is nestled amongst custom homes in the $2M+price range and in the award winning Acalanes School District.