Truly an unrivaled location in the flats of sought-after Sunnyslope just beyond Downtown Petaluma's Historic District. Tucked at the end of serene Deer Valley Court, where no listings have been offered on the open market in nearly two decades. Comprising approx. 3,500 sq. ft of upscale living space, this meticulously maintained residence offers a traditional configuration with formal spaces off the entry foyer and casual living at rear. Stunning gourmet kitchen complete with custom cabinetry, oversized center island and top-of-the-line Thermador, Viking and Sub Zero appliances. All 4 bedrooms are on the same level upstairs plus a den/office and full bathroom on the main level. The sprawling, approx. 0.46 acre parcel offers tremendous privacy. Resort-like backyard, complete with in-ground pool and spa, outdoor fireplace and built-in BBQ, extensive hardscape, turf, mature oak tree and more. Oversized 3 car garage with extensive wall of storage cabinets. Just 2 flat blocks to McNear Park and 8 blocks to the best of Downtown Petaluma.