HUGE LOT IN HAPPY VALLEY! Custom 4,200SQFT 4 bedroom +1 den / 4 bath home in Lafayette’s exclusive Happy Valley neighborhood. First time ever on the market! Huge backyard that holds tons of potential to possibly sub-divide and build on to existing side road (Buyer to investigate with City of Lafayette). This two-story traditional is filled with natural light, gleaming hardwood floors, dual zone heating & A/C, spacious over-sized rooms, expansive Primary Suite with en-suite bath, private office/workout room and walk-in closet, 2nd bedroom upstairs with private en-suite bath, main floor in-law/guest bedroom with full bath across the hall originally designed for in-law quarters w potential private kitchen/laundry room. The large chef's kitchen is light & bright with stainless steel appliances attached family room that leads to the huge backyard. Buy into the East Bay’s Top Schools and most desirable City. Centrally located, and close to Hwy 24/680, BART, the beloved Lafayette Reservoir, hiking and biking trails.