403 W William Street
Superior, CO, 80027 $ 2,400,000
Bedrooms7 Baths6.1 Sq 5,291 Monthly Estimate*
$ 14,777
Listed by Buyers' Slice Realty
for $2,400,000 with 7 bedrooms and 6 full baths, 1 half bath. This 5,291 square foot home was built in 2023 on a lot size of 0.16.
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!
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Single Family Coming Soon
FeaturesInteriorInterior Amenities Eat-in Kitchen In-Law Floorplan Open Floorplan Pantry Smart Thermostat Walk-In Closet(s) Wet Bar
Fireplace Features Gas Living Room
Basement (Y/N) Y
Window Features Double Pane Windows Window Coverings
Above Grade Finished Area 3155
Half Baths 1
3/4 Baths 1
Total Bedrooms 7
Below Grade Finished Area 2030
Main Level Bedrooms 0
Main Level Bathrooms 2
Total Baths 7
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GeneralSewer Public Sewer
Heating Forced Air Heat Pump
Cooling Air Conditioning-Room Central Air
Utilities Electricity Available Natural Gas Available
Possession See Remarks
Roof Composition
Appliances Bar Fridge Dishwasher Dryer Microwave Oven Refrigerator Washer
Zoning RL
Garage Spaces 2
Patio/Porch Features Patio
Security Features Fire Alarm Fire Sprinkler System
Construction Materials Metal Siding Frame
Exclusions Seller's personal property.
Year Built 2023
View Mountain(s) Plains
Levels Two
Property Subtype Single Family Residence
Tax Year 2025
Ownership Agent Owner
County Boulder
Property Type Residential
HOA N
Attached Garage Y
Subdivision Name Superior West
Facing Direction South
Possible Use Multi-Family Residential
Full Baths 5
Status Coming Soon
High School Monarch
City Superior
High School District Boulder Valley RE 2
Lot Size Square Feet 6884
Listing Terms Cash Conventional
Elementary School Monarch K-8
Tax Annual Amount 9899
Middle/Junior High School Monarch K-8
Concessions No
Structure Type House
Standard Status Coming Soon
Occupancy Type Owner
Elementary School District Boulder Valley RE 2
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ExteriorExterior Amenities Balcony Spa/Hot Tub
Fencing Fenced
Lot Features Corner Lot Level Sprinklers In Front
Water Source Public
Total Parking 2
Building Area Total 5291
Lot Size Acres 0.16
Road Surface Type Alley Paved
Builder Model custom
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* Excluded FeaturesList ByBuyers' Slice RealtyBroker
Affordability Calculator
- Monthly Principal & Interest
- $14,777
- Monthly Property Taxes
- $825
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Superior, CO
Average List Price $1,187,636
Percent of Sale Price 51%
About Superior, CO 13,423 Population
49% Since 2002
$ 115,382 Median Income
35.67 Median Age
41% Households with Children
Trends Information provided by ATTOM Data Solutions.
3043378 Elementary School
1956482 Middle School
Monarch High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 3/7/2026 | $2,400,000 | | Listed Price |