Welcome to your dream home in one of Naperville's most sought-after communities: River Run. This North-facing, stately custom-built residence is situated on a quiet street and is sure to impress with its classic facade and lush landscaping. Spanning over 3,900 sq ft, the expansive home offers a spacious and open floor plan, starting with the grande two-story foyer, complete with stepped ceiling, designer chandelier and wide wood formal staircase. Large windows flood the home throughout with natural light, creating a bright and airy atmosphere. The main level boasts all hardwood flooring, a crisp white trim package, a formal dining room with double tray ceiling, a front study with bay bump out, and a den with French doors and built-in shelving.  Entertain with ease in the sprawling kitchen, featuring a large center island with seating, plentiful white cabinets including bar cabinetry, expanded counter serving space, dual ovens and a stainless-steel appliance package. Enjoy meals in the large casual eating area or unwind in the lovely sunroom overlooking the private backyard and Koi pond. The family room has a soaring ceiling, huge bay of windows with seat, cubby storage, and a floor-to-ceiling brick fireplace and second staircase, all perfect for hosting big gatherings.     Upstairs, discover four generously sized bedrooms all with detailed ceilings. The expansive owner's suite includes a lounging area, tray ceiling a luxurious bath with a large shower and seat, jetted tub, and a large dual-sided closet. The secondary bedrooms offer ample closet space and are serviced by a private ensuite with hall access and a Jack and Jill bath.  An open staircase leads you to the finished lookout basement, with natural light and deep pour design, this fantastic roomy and open recreational space includes a billiards table and related living options, including a 5th bedroom, full bath, and a wonderful wet bar with wine cooler/ kitchenette area, plus a huge storage room. Enjoy the private backyard oasis with its green plants, trees, Koi pond.  Relax in your own private spa/hot tub that is included, or on the lower paver patio by the fire pit complete with gas line.  1703 Baybrook has been well-maintained by its original owners, this great floor plan is nicely detailed with high ceilings, 5 bedrooms, 4.1 baths, 3 car garage, irrigation system, radon mitigation system, security system,  Plus, a River Run Club equity Membership is included for indoor/outdoor pools, tennis and clubhouse amenities.  New Roof, Gutters, Garage doors (2024), dual AC (2022) and (2015), Furnace 1 (2023)    This home is serviced by the award-winning Naperville School District #204, including Neuqua Valley High School,  Conveniently located just minutes from Knoch Knolls Park, the DuPage River Trail, and downtown Naperville, with easy access to I-355/I-55.   Experience the perfect blend of elegance and convenience at 1703 Baybrook Lane. Welcome home!