Beautiful home w/extremely rare legal ADU or affordable Next Gen home in prestigious Sierra Vista w/top schools, incl. Ralston Valley Sr. Many updates throughout this immaculate home/w many updates in all the mechanical services, too. Enter the formal LR w/large adjacent formal dining area next to the open kitchen w/eating bar, light oak cabinets, SS appliances, except MO & tons of cabinets for storage. Stroll upstairs to the expanded upper level. The master suite was expanded w/vaulted ceiling & updated custom master bath w/large walk in shower & dbl sinks. 3 secondary bedrooms for multiple purposes & updated full bath w/dbl sinks. Laundry also located on upper level w/laundry sink & fold down laundry table. Basement is fully finished but open to be used in a myriad of formats--buyers' choice! There is a 1/2 guest bath off the lower hall which also features access to the 2 car gar & a private door to the apartment--which was added in 2014. Open floor plan features a full kitchen w/hickory cabinets, all appliances, eating bar & room for a kitchen table. Open flex room is perfect for the bedroom & sitting area, w/full wall closet. Handicap accessible bath, private laundry & 2nd furnace & AC complete this great space. NO steps out the French doors to the exterior w/concrete pad which can be used for car storage or patio area. Parking is private behind the fence w/double drive gates. Could also be used for RV, boat or camper storage. Huge shed w/heavy duty shelves in spacious back yard. Walk to Sierra Elem. Very quiet but convenient to 80th & Kipling. Perfect for extended families--older or younger. Currently City of Arvada allows ADUs to be rented short term. Buyer to verify. ADU built at a cost of over $170,000 & added 832 SF in apartment & master bed. All work permitted & approved. The options are endless. The property has virtually been updated throughout since 2014. See broker remarks for dates. Easy to show & ready to go and grow with your family!