403 W William St, Superior, CO 80027

• 7 beds |
• 7 baths |
• 5,185 sqft

Property Description

Welcome to this stunning custom home offering walkable convenience and refined living, complete with a finished basement and fully independent ADU. Move-in ready with designer blinds and mature landscaping. Step out the back door to Whole Foods, Super Target, the McCaslin RTD station, and the newly rebuilt Founder's Park. From the front, enjoy Downtown Superior and miles of open space trails. Located on a corner lot, the home features an open floor plan, seamless indoor-outdoor living, and mountain views. Generous rooms, sweeping windows, and 10-foot ceilings throughout fill the home with natural light. The main level includes rich wood flooring, a great room with fireplace, and a chef's kitchen that includes a large island and striking countertops. Between the home and garage, a secluded landscaped courtyard patio with privacy fencing creates a blissful outdoor retreat. A custom floating staircase leads to two spacious upstairs bedrooms that are in addition to the primary suite---each with its own bath, plus a laundry room and sitting area opening to a covered balcony. The primary suite offers a five-piece bath with soaking tub, Porcelanosa-tiled walk-in shower, and expansive walk-in closet. A main-level ensuite bedroom provides flexible living and use options. The finished basement adds a rec room, wet bar, gym space, and two bedrooms.The detached two-car garage includes a finished ADU with bedroom, bath, full kitchen, washer/dryer, and balcony---ideal for guests, office, or rental use. Extras include fire sprinkler suppression system, indoor and outdoor EV charging, and hot tub. Turnkey home with quick access to Highway 36, Boulder, Denver, and DIA!

Listing Status:

Active

Data Last Updated:

April 2, 2026 at 6:21AM

Listing Office:

Buyers' Slice Realty : 3033766111

Listing Agent:

Tommy Lorden : 3033766111

MLS ID:

1053262

Interior

• General: Eat-in KitchenOpen FloorplanPantryWalk-In Closet(s)Wet Bar
• Appliances: Gas RangeDishwasherRefrigeratorBar FridgeWasherDryerMicrowave
• Basement: Partially Finished
• A/C: Central AirWall/Window Unit(s)
• Heating: Forced AirHeat Pump
• Fireplace: GasLiving Room
• Eco/Green Feature: WindowsHigh Efficiency FurnaceThermostat

Exterior

• General: Sprinkler SystemBalconyHot TubCarriage House
• Style: In-Law Area
• Other Structures: Patio
• Parking: Attached

Construction

• Roofing: Composition
• Windows: Window Coverings
• General: FrameMetal SidingCompositionTwo

Location

• Originating MLS: ires
• School District: Boulder Valley Dist RE2
• County: Boulder

Lot

• Zoning: RLR0617502
• View: Mountain(s)HillsPlains View
• Fencing: FencedWood

Utilities

• Utilities: Natural Gas AvailableElectricity AvailableXcel
• Water: City
• Sewer: Public Sewer

Financial

• Source: ires
• Exclusions: Seller's personal property.