Elegant and updated 1.5-story custom-built estate home offering approximately 6,000 sq ft of finished living space on a premium ~1-acre private corner lot in sought-after Steeple Run Estates. Thoughtfully designed for both grand entertaining and comfortable daily living, this beautifully maintained residence blends refined craftsmanship, abundant natural light, modernized systems, and exceptional flexibility across three finished levels. A dramatic two-story foyer with vaulted ceiling, stone accent wall, two skylights, and an open staircase sets the tone for the home's warm and inviting style. The foyer opens to a sunken great room featuring a stone fireplace, deluxe crown molding, walls of windows, and serene views of the park-like yard. Hardwood floors extend through much of the main level. The chef's kitchen includes granite countertops, a large island with seating, Sub-Zero refrigeration, GE Cafe gas range, Bosch dishwasher, Samsung microwave, upgraded disposal, a new Delta faucet, and a bright breakfast bay overlooking the patio and expansive yard. A separate den/living room with built-ins and a formal dining room provide excellent flow for gatherings. The spacious laundry/mudroom offers cabinetry, an oversized folding counter, deep utility sink, and Electrolux Wave-Touch washer and dryer on pedestals. A main-level fifth bedroom features a vaulted ceiling, wall-to-wall closets, and convenient access to an updated full bath-ideal for guests, multi-generational living, or a private office. The primary suite includes a vaulted ceiling, two walk-in closets with professionally installed closet systems and shoe storage, and a spa-inspired bath with skylight, jetted tub, separate shower, private toilet closet, dual granite vanities with Grohe fixtures, and dual linen cabinets. Upstairs are three generously sized bedrooms, all with walk-in closets, plus an open loft overlooking the foyer. A large hall bath with dual vanities, granite counters, separate tub and shower, private toilet closet, Grohe fixtures, and skylight completes the second level. The deep-pour finished lower level offers exceptional lifestyle versatility, including a full bar kitchenette with sink, dishwasher, beverage refrigerator, and microwave; game and media areas wired for surround sound; exercise or recreation space; a gas fireplace with remote; full bath; a guest or flex room with natural light; and ample storage. A utility area includes a double-bowl mud sink, water-heater closet, and a separate water-treatment room with Kinetico softener, carbon filtration system, and pressure tank. Major updates include: roof (2021); Pella windows and 3-panel patio doors (2021); asphalt driveway (2019, resealed 2022 & 2025); dual furnaces (2011 & 2018); dual A/C units (2018); water heaters (2019 & 2022); humidifiers (2018); radon mitigation system (2021); new well pump (2025); sump pump with battery backup; and a rebalanced hot-water system. Comfort features include Nest thermostats, Nest doorbell, recessed lighting, dimmers, smart LED ceiling lighting in select basement rooms, and plumbed central-vac lines. Interior and exterior repainting (2021) and plush Mohawk carpeting with upgraded padding (2021) enhance the home's turnkey appeal. Outdoor living includes multiple patios, mature trees, stone-edged landscaping, exceptional privacy, and a fully insulated three-car garage. An unfinished attic above the garage provides approximately 1,000 sq ft of future expansion potential. Subflooring is in place, and HVAC ducting has been routed to the area, allowing the space to be heated and cooled if finished. The attic is not currently finished or conditioned, and access would be created as part of a future build-out. Minutes to downtown Crystal Lake, Metra, 3 Oaks Recreation Area, parks, golf, dining, and highly rated District 47/155 schools. A rare blend of luxury, privacy, and long-term flexibility.