404 W William Street B, Superior, CO

$850,000

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3

Beds

4

Baths

2,502

Square feet

0.16

Acres

About 404 W William Street B

Bright, stylish, and practically brand new—this Superior gem has it all. Built in 2023 and surrounded by million-dollar properties, this HERS-certified, energy-efficient home perfectly combines modern design and comfort—and best of all, there’s no HOA. Hardwood floors flow throughout the main level, complemented by stylish lighting and custom top-down, bottom-up blinds for ideal light and privacy control. The kitchen impresses with quartz countertops, t ile backsplash, stainless steel appliances including a gas range, abundant cabinet and prep space plus a huge walk-in pantry. Upstairs are three spacious bedrooms, including a vaulted ceiling primary suite with dual sinks, a walk-in closet, linen closet, and custom tiled shower. The upstairs laundry includes washer and dryer for easy move-in. The finished basement, with high ceilings and an egress window, offers flexible space for a media room, home gym, or easy conversion into a fourth bedroom, complete with a stylish three-quarter bath. Outdoor living is exceptional, with two separate fenced areas perfect for pets, gardening, or outdoor dining. The 2 car garage is finished and insulated. A Level 3 fire mitigation system provides added peace of mind. Enjoy views of the Boulder Flatirons and an unbeatable location—just steps from Founders Park and the beautiful 14-mile Coal Creek soft-surface trail, offering scenic hiking, biking, and wildlife viewing that connects Superior and Louisville. Enjoy convenient access to Hwy 36, nearby amenities like Costco, Whole Foods, and the RTD Park-n-Ride. Located within the highly sought-after Boulder Valley RE-2 School District, this home offers the perfect blend of modern design, energy efficiency, and the best of Colorado living.

Features of 404 W William Street B

MLS® # 7540494
Price $850,000
Bedrooms 3
Bathrooms 4.00
Half Baths 1
Square Footage 2,502
Acres 0.16
Year Built 2023
Type Residential
Sub-Type Single Family Residence
Style Contemporary
Status Active

Community Information

Address 404 W William Street B
Subdivision Old Superior
City Superior
County Boulder
State CO
Zip Code 80027

Amenities

Utilities Cable Available, Electricity Connected, Internet Access (Wired), Natural Gas Connected, Phone Available
Parking Spaces 2
Parking Concrete, Dry Walled, Exterior Access Door, Finished Garage, Insulated Garage, Lift, Lighted
# of Garages 2
View Meadow
Is Waterfront No
Has Pool No

Interior

Interior Features Breakfast Bar, Ceiling Fan(s), Eat-in Kitchen, Entrance Foyer, High Ceilings, High Speed Internet, Kitchen Island, Open Floorplan, Pantry, Primary Suite, Quartz Counters, Radon Mitigation System, Smoke Free, Vaulted Ceiling(s)
Appliances Dishwasher, Disposal, Dryer, Freezer, Gas Water Heater, Microwave, Oven, Range, Refrigerator, Washer
Heating Forced Air
Cooling Air Conditioning-Room
Fireplace No
Stories Two

Exterior

Exterior Features Lighting, Private Yard
Lot Description Fire Mitigation, Irrigated, Landscaped, Level, Sprinklers In Front, Sprinklers In Rear
Windows Double Pane Windows, Window Coverings
Roof Composition
Foundation Slab

School Information

District Boulder Valley RE 2
Elementary Monarch K-8
Middle Monarch K-8
High Monarch

Additional Information

Date Listed October 16th, 2025
Zoning XSU
Foreclosure No
Short Sale No
RE / Bank Owned No

Listing Details

OfficeBerkshire Hathaway HomeServices RE of the Rockies

Listing Map

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