See Home Value
Frederick 80504
5121 Mt Arapaho Cir
$650,000
● House - Off Market

5121 Mt Arapaho Cir

Longmont, CO 80504
bedrooms
4 Beds
bathrooms
3 Baths, 1 Half Bath
square feet
4,032 Ft²
$3,654
Est. Monthly
$11
HOA / Fees

About This Property

Welcome to 5121 Mt. Arapahoe Circle in Longmont-a versatile and thoughtfully updated home perfect for multi-generational living, savvy home hackers, or anyone seeking flexible space and income potential.

One of the standout features is the newly renovated attached basement apartment, complete with its own private entrance and a charming, low-maintenance turf yard-ideal for guests, tenants, or extended family. Whether you're offsetting your mortgage or creating a private retreat, this setup opens the door to endless possibilities.

The main level offers comfortable and functional living with a spacious primary suite, convenient half bath, dedicated dining room, bright kitchen, cozy living room, office space, and a laundry room for everyday ease. Upstairs, you'll find two expansive loft spaces-perfect for a home office, playroom, or additional living areas-along with two additional bedrooms and a full bathroom.

Outside, enjoy Colorado living at its best with a beautifully designed patio and garden area, plus a large covered front porch that faces a peaceful park-perfect for morning coffee or evening unwinding. A detached three-car garage provides ample space for vehicles, storage, or hobbies.

This home has been well cared for with many updates, including new windows and durable luxury vinyl plank flooring throughout, blending style with functionality.

A rare opportunity to own a home that truly adapts to your lifestyle-whether you're investing, expanding, or simply settling in.
Unit Size
4,032 Ft²
Days on Market
-
Land Size
0.16 acres
Price per sqft
$165
Property Type
House
Property Taxes
$377
HOA Dues
$11
Year Built
2000

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Last updated: 3 months ago (REcolorado MLS #IRE4174350)

Price History

Date / Event Date Event Price
Aug 7, 2026 Sold
Sold
Jul 15, 2026 In contract -
In contract
May 27, 2026 Price Decreased $665,000
↓ $10K (1.5%)
Price Decreased
Apr 23, 2026 Listed $675,000
Listed
Feb 2, 2024 Sold
Sold
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Property Highlights

Air Conditioning
Fireplace

Building Info

Overview

    General

  • Year Built: 2000
  • Effective Year Built: 2000
  • Building Count: 1
  • Bedroom Count: 5
  • Bathroom Count: 3
  • Full Bathrooms: 3
  • Partial Bathrooms: 3
  • Bathroom Plumbing Fixtures: 13
  • Building Condition: 6
  • Building Quality: 0
  • Construction Type: 6
  • Building Style: 40
  • Exterior Walls Type: 23
  • Interior Walls Type: 3
  • Roof Shape Type: 1
  • Roof Cover Type: 3
  • Floor Count: 100
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 6
  • Basement Area: 1,456
  • Garage Type: 1
  • Garage Square Area: 640
  • Parking Space Count: 2
  • Patio Type: 60
  • Porch Type: 36
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 6,821
  • Total Building Area: 4,672
  • Gross Building Area: 4,672
  • Building Area: 4,032
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 1
  • Heating: 3
  • Heated Square Feet: 4,032
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: SUMMIT VIEW ESTATES 2ND FG
  • Land Acres: 0000000157
  • Standard Land Use Code: 1001
  • County Land Use Code: 1212
  • Legal Description 1: FRE 2SVE L6 BLK7 SUMMIT VIEW ESTATES 2ND

Neighborhood

  • School District Name: St. Vrain Valley School District RE 1J
  • Census Tract: 002013

Geography

  • Assessors Map Reference: MAP 2457
  • Account Number: R8308100
  • Parcel: R8308100
  • Block: 7
  • Lot: 6
  • Meridian: SEC 24 TWN 2N RNG 68W
  • Latitude: 40.1219
  • Longitude: -104.958

    Address

  • Full Address: 5121 Mt Arapaho Cir
  • Address - House Number: 5121
  • Address - Street Name: Mt Arapaho
  • Address - Suffix Type: Cir
  • State: CO
  • City Name: Longmont
  • Carrier Code: R029
  • 4-Digit Zip Code: 5538
  • Zip Code: 80504

Valuation

    Tax

  • Total Area: 4,032
  • Tax Year: 2023
  • Tax Amount: $396,778
  • Tax Rate Code Area: 1449

    Appraisal Valuation

  • Standard Deviation: 0.1354
  • Valuation Date: Apr 03, 2024
  • Confidence Score: 84
  • Final Value: 678,996
  • High Value: 770,962
  • Low Value: 587,030

    Market Valuation

  • Market Total Value: $675,410
  • Market Land Value: $114,000
  • Market Improvement Value: $561,410

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $45,250
  • Assessed Land Value: $7,640
  • Assessed Improvements Value: $37,610

    Sales

  • Current Sale Contract Date: Feb 01, 2024
  • Current Sale Recording Date: Feb 02, 2024
  • Current Sale Price:
  • Current Sale Document Type: 68
  • Current Sale Input Document Number: 4942580
  • Previous Sale Recording Date: May 19, 2014
  • Previous Sale Contract Date: May 09, 2014
  • Previous Sale Amount: $350,000
  • Previous Sale Document Type: 71
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

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Frequently Asked Questions

When was property at 5121 Mt Arapaho Circle built and last sold?
The property at 5121 Mt Arapaho Circle was built in 2000 and last sold on Feb 1, 2024 for $608,000.
How much is this home worth?
The estimated value of the home located at 5121 Mt Arapaho Circle is $683,564.
What are some comparable homes to 5121 Mt Arapaho Circle?
There are currently no comparable homes to 5121 Mt Arapaho Circle.