404 W William Street #B

Superior, CO 80027 — Boulder County — Old Superior Neighborhood

Residential  $850,000  Active  Listing# 7540494  

3 beds    4 baths    2649.00 sqft    Lot size: 6964.00 sqft    0.16 acres    2023 build   

 



  Showing Request        
Updated: 10-17-2025 07:16am

  Property Description

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.

  Listing Details

Property Type 
Residential
Listing# 
7540494
Source 
REcolorado (Denver)
Last Updated 
10-17-2025 07:16am
Status 
Active
Off Market Date 
11-30--0001 12:00am

  Property Details

Property Subtype 
Single Family Residence
Sold Price 
$850,000
Original Price 
$850,000
Location 
Superior, CO 80027
SqFT 
2649.00
Year Built 
2023
Acres 
0.16
Bedrooms 
3
Bathrooms 
4
Levels 
Two

  Map

  Property Level and Sizes

SqFt Lot 
6964.00
Lot 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)
Lot Size 
0.16
Foundation Details 
Slab
Basement 
Finished
Common Walls 
1 Common Wall

  Financial Details

Previous Year Tax 
7390.00
Year Tax 
2024
Primary HOA Fees 
0.00

  Interior Details

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
Laundry Features  
In Unit
Electric  
Air Conditioning-Room
Flooring  
Carpet, Laminate, Tile, Wood
Cooling  
Air Conditioning-Room
Heating  
Forced Air
Utilities  
Cable Available, Electricity Connected, Internet Access (Wired), Natural Gas Connected, Phone Available

  Exterior Details

Features  
Lighting, Private Yard
Lot View  
Meadow
Water  
Public
Sewer  
Public Sewer

  Garage & Parking

Parking Features  
Concrete, Dry Walled, Exterior Access Door, Finished Garage, Insulated Garage, Lift, Lighted

  Exterior Construction

Roof  
Composition
Construction Materials  
Concrete, Frame, Wood Siding
Exterior Features  
Lighting, Private Yard
Window Features  
Double Pane Windows, Window Coverings
Security Features  
Carbon Monoxide Detector(s), Smoke Detector(s)
Builder Name 
Porchfront Homes
Builder Source 
Appraiser

  Land Details

PPA 
0.00
Road Frontage Type 
Public
Road Responsibility 
Public Maintained Road
Sewer Fee 
0.00

  Schools

Elementary School 
Monarch K-8
Middle School 
Monarch K-8
High School 
Monarch

  Walk Score®


 


  Contact Agent

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