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1321 Onyx CircleLongmont, CO 80504

For Sale

$1,650,000

Smart Buyer Rebate $16,500

Welcome to elevated living at 1321 Onyx Cir, nestled in the highly sought-after Rainbow Ridge Estates. This stunning 6-bedroom, 6-bathroom home, complete with a side-load 3-car garage, boasts undeniable curb appeal. Step inside, and you'll be greeted by a grand foyer with a dramatic staircase that sets the tone for this exquisite residence. From the Foyer, a thoughtfully designed home office or 6th bedroom with an attached 3/4 bathroom provides versatility. Formal dining room ideal space for hosting memorable gatherings. The chef's kitchen is a true centerpiece, showcasing a spacious central island, upgraded appliances, and a wall of windows that frame picturesque views of the serene backyard and sparkling pool. Flowing seamlessly from the kitchen, a welcoming family room with gas fireplace and soaring ceilings-perfect for both everyday living & special gatherings. Upstairs, a rare find: four spacious bedrooms, each with its own en-suite bathroom, all thoughtfully upgraded. The luxurious primary suite is a private retreat, featuring a beautifully appointed bathroom, and a peaceful getaway space to unwind in style. A sprawling lower level recreation room with a pool table, a functional exercise or playroom, and an inviting theater room equipped with a projector, wet bar, and wine cellar create endless opportunities for entertainment. A comfortable 5th bedroom with an adjoining upgraded bathroom ensures your guests will feel right at home. This home is designed for living, entertaining, and making cherished memories. From its elegant design to its abundance of amenities, 1321 Onyx Cir is your opportunity to embrace the best of Rainbow Ridge Estates living. Let's Get You Home!

Listed by Brian Sundberg

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License #IRP15004

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Compass - Boulder

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303-931-5483

Listed by Jennifer Burke

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License #IRP28745

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Compass - Boulder

Last updated April 29, 2026

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Source: REcolorado #IR1055876

Listing Facts

  • TypeSingle-family
  • NeighborhoodPike
  • Bedrooms6
  • Bathrooms6
  • Days on Prevu22
  • HOA/Maint. Fees$500/annual
  • Taxes$10,244/year
  • Size5,147 sqft
  • Price per sqft$321

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Air Conditioning
  • Parking
  • Swimming Pool

Location

Mortgage Calculator

Listing History

04/09/2026
Status changed to Active
$1,650,000
04/08/2026
Listed by Compass - Boulder
$1,650,000

Property Details for 1321 Onyx Circle

Association

Amenities

  • Association Amenities: Park

Fees

  • Association Fee: $500.00 Annually
  • Association Fee Includes: Reserves

General

  • Association Name: Rainbow Ridge Estates

Exterior

Construction

  • Roof: Composition
  • Structure Type: House
  • Window Features: Double Pane Windows, Window Coverings
  • Year Built: 2004
  • Architectural Style: Contemporary
  • Construction Materials: Stone, Stucco, Frame
  • Exterior Features: Spa/Hot Tub

Features

  • Fencing: Fenced
  • Patio And Porch Features: Patio
  • Pool Features: Private
  • Road Frontage Type: Public

Measurements

  • Building Area Total: 5,147
  • Lot Features: Level, Sprinklers In Front
  • Lot Size Acres: 0.29
  • Lot Size Square Feet: 12,844

Financial

Taxes

  • Parcel Number: R0501341
  • Tax Annual Amount: $10,244.00
  • Tax Year: 2025

Interior

Features

  • Appliances: Dishwasher, Disposal, Double Oven, Dryer, Oven, Refrigerator, Washer
  • Fireplace Features: Basement, Gas, Living Room, Other, Primary Bedroom
  • Flooring: Tile, Wood
  • Interior Features: Eat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Primary Suite, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar

Measurements

  • Living Area: 5,147

Rooms

  • Basement: Full, Sump Pump
  • Has Basement: Yes
  • Bathrooms Full: 2
  • Bathrooms Three Quarter: 4
  • Bathrooms Total Integer: 6
  • Bedrooms Total: 6
  • Main Level Bathrooms: 1
  • Main Level Bedrooms: 1

Other

General

  • Exclusions: Seller's personal property

Location

  • Subdivision Name: Rainbow Ridge Estates

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 3
  • Parking Total: 3

Schools

Elementary School

  • Elementary School: Burlington
  • Elementary School District: St. Vrain Valley RE-1J

High School

  • High School: Niwot
  • High School District: St. Vrain Valley RE-1J

Middle or Junior School

  • Middle Or Junior School: Sunset

Utilities

Equipment

  • Cooling: Ceiling Fan(s), Central Air
  • Heating: Forced Air
  • Laundry Features: In Unit
  • Other Equipment: Home Theater, Satellite Dish
  • Sewer: Public Sewer
  • Utilities: Cable Available, Electricity Available, Internet Access (Wired), Natural Gas Available
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 6 bedrooms and 6 bathrooms in this single-family home at 1321 Onyx Circle.

What schools are nearby to 1321 Onyx Circle?

Nearby schools include the Burlington Elementary School, Sunset Middle School, and Niwot High School.

Does this single-family home have parking?

Yes, there are 3 parking spaces available for 1321 Onyx Circle.

What are the annual taxes for 1321 Onyx Circle?

Annual taxes for this single-family home are estimated at $10,244.

How does 1321 Onyx Circle compare to other single-family homes in Pike?

This single-family home is listed 45% above the average price for single-family homes in Pike and has been on the market for 2 more days than the typical home in this area.

What building or home owners association is the single-family home part of?

This single-family home is part of the Rainbow Ridge Estates home owners association.

What is the square footage on this single-family home?

According to the MLS, this listing is 5,147 sqft.

1321 Onyx Circle is a 6-bedroom, 6-bath single-family home for sale in Longmont CO 80504. Listed on Prevu for 22 days at $1,650,000. This residence features 5,147 square feet of living space, located in Pike. The median listing price for single-family homes in this area is $1,080,000. Nearby schools include Burlington Elementary School, Sunset Middle School, and Niwot High School. The home offers private outdoor space, dishwasher, air conditioning, parking, swimming pool, and washer/dryer. View other single-family home listings in Longmont.

The content relating to real estate for sale in this Web site comes in part from the Internet Data eXchange ("IDX") program of METROLIST, INC., DBA RECOLORADO® Real estate listings held by brokers other than Prevu are marked with the IDX Logo. This information is being provided for the consumers' personal, non-commercial use and may not be used for any other purpose. All information subject to change and should be independently verified.

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.