Rare Arlington Heights Gem with Detached In-Law Suite! This exceptional Arlington Heights property offers unmatched versatility and style with a spacious two-level, 4-bedroom, 2-bath main residence plus a brand-new detached 1-bedroom, 1.5-bath Accessory Dwelling Unit (ADU)—perfect for multi-generational living, rental income, or a private guest retreat.The main unit features multiple living areas, a sunny enclosed porch, mudroom, and in-unit laundry. Enjoy year-round comfort with ductless mini-splits throughout. The top-floor primary suite opens to a private deck with sweeping skyline views.The newly constructed 507 sq ft loft-style ADU boasts its own private entrance, full kitchen, laundry, A/C, 1.5 baths, and a private yard—offering independence without compromise. With 4 off-street parking spaces, a prime location in one of Arlington's most sought-after neighborhoods, and endless living options, this one-of-a-kind property is a true standout.