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404 W William Street BSuperior, CO 80027

For Sale

$850,000

Smart Buyer Rebate $8,500

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.

Listed by Cameron Racine

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License #55050882

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Berkshire Hathaway HomeServices RE of the Rockies

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720-212-6069

Last updated October 17, 2025

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Source: REcolorado #7540494

Listing Facts

  • TypeSingle-family
  • NeighborhoodSuperior
  • Bedrooms3
  • Bathrooms4
  • Days on Prevu4
  • Taxes$7,390/year
  • Size2,502 sqft
  • Price per sqft$340

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Pets Allowed
  • Parking

Location

Mortgage Calculator

Listing History

10/17/2025
Listed by Berkshire Hathaway HomeServices RE of the Rockies
$850,000

Property Details for 404 W William Street B

Association

Amenities

  • Pets Allowed: Cats OK, Dogs OK, Number Limit

Exterior

Construction

  • Number Of Units Total: 2
  • Property Attached: Yes
  • Property Condition: New Construction
  • Roof: Composition
  • Structure Type: Duplex
  • Window Features: Double Pane Windows, Window Coverings
  • Year Built: 2023
  • Architectural Style: Contemporary
  • Builder Name: Porchfront Homes
  • Common Walls: 1 Common Wall
  • Construction Materials: Concrete, Frame, Wood Siding
  • Entry Location: Exterior Access
  • Exterior Features: Lighting, Private Yard

Features

  • Direction Faces: South
  • Fencing: Partial
  • Patio And Porch Features: Patio
  • Road Frontage Type: Public
  • View: Meadow

Measurements

  • Building Area Total: 2,649
  • Lot Features: Fire Mitigation, Irrigated, Landscaped, Level, Sprinklers In Front, Sprinklers In Rear
  • Lot Size Acres: 0.16
  • Lot Size Area: 6,964
  • Lot Size Square Feet: 6,964
  • Lot Size Units: Square Feet

Financial

Taxes

  • Parcel Number: R0611735
  • Tax Annual Amount: $7,390.00
  • Tax Year: 2024

Interior

Features

  • Appliances: Dishwasher, Disposal, Dryer, Freezer, Gas Water Heater, Microwave, Oven, Range, Refrigerator, Washer
  • Flooring: Carpet, Laminate, Tile, Wood
  • 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)

Measurements

  • Living Area: 2,502

Rooms

  • Basement: Finished
  • Has Basement: Yes
  • Bathrooms Half: 1
  • Bathrooms Three Quarter: 3
  • Bathrooms Total Integer: 4
  • Bedrooms Total: 3
  • Main Level Bathrooms: 1

Other

Environmental

  • Green Energy Efficient: Appliances, Construction, Doors, HVAC, Insulation, Lighting, Roof, Water Heater, Windows

General

  • Exclusions: Staging items.

Location

  • Subdivision Name: Old Superior

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 2
  • Parking Features: Concrete, Dry Walled, Exterior Access Door, Finished Garage, Insulated Garage, Lift, Lighted
  • Parking Total: 2

Schools

Elementary School

  • Elementary School: Monarch K-8
  • Elementary School District: Boulder Valley RE 2

High School

  • High School: Monarch
  • High School District: Boulder Valley RE 2

Middle or Junior School

  • Middle Or Junior School: Monarch K-8
  • Middle Or Junior School District: Boulder Valley RE 2

Utilities

Equipment

  • Cooling: Air Conditioning-Room
  • Electric: 110V, 220 Volts
  • Heating: Forced Air
  • Laundry Features: In Unit
  • Sewer: Public Sewer
  • Utilities: Cable Available, Electricity Connected, Internet Access (Wired), Natural Gas Connected, Phone Available
  • Water Source: Public

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Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.