See Home Value
$5,250,000
● House - Off Market

640 Iris Ave

Boulder, CO 80304
bedrooms
4 Beds
bathrooms
3 Baths, 1 Half Bath
square feet
5,019 Ft²
$28,458
Est. Monthly

About This Property

Motivated Seller! A new standard of luxury awaits in Newlands. Designed by the visionaries at Mosaic Architects, this stunning residence is where bold design meets effortless elegance and QUALITY construction. Set on a sprawling 9,000+ SF lot, every detail of this home is intentional. The WOW factor begins the moment you head inside! The dramatic two story foyer with its striking stair hall welcomes you and entices you through the open concept living areas where THREE sets of Marvin collapsible doors open to create a seamless integration of indoor an outdoor living. White oak floors anchor the spaces while custom cabinetry, a huge pantry, a timeless palette, and top of the line appliances provide the backdrop for culinary creations as well as quick weeknight suppers. The outdoor veranda offers tons of shade in summer months to relax and read a book as well as multiple eating and conversation areas for creating memories and laughter well into the evening. The open-concept layout adapts to your lifestyle, offering comfort, flow, and refined functionality at every turn. You'll be hard pressed to find a home with more soft filtered light throughout. The Owner's Retreat with soaring ceilings and a huge patio, steam shower, and custom cabinetry with under lit vanities provide the perfect sanctuary to unwind every evening and awaken each morning. Two additional en suite bedrooms and a bonus flex room complete the upper level. Even the lower level seamlessly integrates into the home with open stair hall, high ceilings, and a large feature media wall with 81" television and under cabinet lighting. A 4th bedroom and optional 5th bedroom flex exercise room completes your experience that leaves you feeling inspired and at peace. Why settle for a dated remodel or wait 3 years to build new when you can have it all now! Brand new, intelligently crafted, and move-in ready? This is your Nirvana in Newlands. LIVE BOLDER, LOVE BOULDER!
Unit Size
5,019 Ft²
Days on Market
-
Land Size
0.22 acres
Price per sqft
$1,096
Property Type
House
Property Taxes
$1,452
HOA Dues
-
Year Built
1954

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Last updated: 4 months ago (IRES MLS #IRE1051046)

Price History

Date / Event Date Event Price
Jun 30, 2026 Sold
Sold
Jun 14, 2026 In contract -
In contract
Apr 2, 2026 Price Decreased $5,500,000
↓ $295K (5.1%)
Price Decreased
Mar 7, 2026 Price Decreased $5,795,000
↓ $100K (1.7%)
Price Decreased
Feb 6, 2026 Listed $5,895,000
Listed
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Property Highlights

Garage
Air Conditioning
Fireplace
With View

Building Info

Overview

    General

  • Year Built: 1954
  • Effective Year Built: 1990
  • Building Count: 1
  • Total Rooms: 6
  • Bedroom Count: 2
  • Bathroom Count: 2
  • Full Bathrooms: 1
  • Partial Bathrooms: 2
  • Building Condition: 6
  • Building Quality: 7
  • Construction Type: 12
  • Building Style: 11
  • Exterior Walls Type: 3
  • Interior Walls Type: 3
  • Roof Shape Type: 0
  • Roof Cover Type: 15
  • Floor Count: 100
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 4
  • Garage Square Area: 480
  • Parking Space Count: 2
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 9,741
  • Total Building Area: 1,642
  • Gross Building Area: 1,642
  • Building Area: 1,642
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 1
  • Heating: 4
  • Heated Square Feet: 1,642
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: TR, NBR 101-103,105,107,109,170
  • Land Acres: 0000000224
  • Standard Land Use Code: 1001
  • County Land Use Code: 1112
  • Legal Description 1: TRACTS 402-B-4 & 402-B-5 BO 24-1N-71

Neighborhood

  • School District Name: Boulder Valley School District RE-2
  • Census Tract: 012101

Geography

  • Assessors Map Reference: B17-C
  • Account Number: R0003614
  • Subdivision Tract Number: 402
  • Parcel: R0003614
  • Meridian: SEC 24 TWN 1N RNG 71
  • Municipality: BOULDER
  • Latitude: 40.0357
  • Longitude: -105.289

    Address

  • Full Address: 640 Iris Ave
  • Address - House Number: 640
  • Address - Street Name: Iris
  • Address - Suffix Type: Ave
  • State: CO
  • City Name: Boulder
  • Carrier Code: C039
  • 4-Digit Zip Code: 1754
  • Zip Code: 80304

Valuation

    Tax

  • Tax Year: 2022
  • Tax Amount: $762,748
  • Tax Rate Code Area: 00-010

    Appraisal Valuation

  • Standard Deviation: 0.1752
  • Valuation Date: Mar 06, 2024
  • Confidence Score: 77
  • Final Value: 1,618,975
  • High Value: 1,902,900
  • Low Value: 1,335,050

    Market Valuation

  • Market Total Value: $1,692,400
  • Market Land Value: $1,523,160
  • Market Improvement Value: $169,240

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $114,491
  • Assessed Land Value: $103,042
  • Assessed Improvements Value: $11,449

    Sales

  • Current Sale Contract Date: Mar 18, 2009
  • Current Sale Recording Date: Apr 06, 2009
  • Current Sale Price:
  • Current Sale Document Type: 61
  • Current Sale Input Document Number: 2990002
  • Previous Sale Recording Date: Mar 23, 2009
  • Previous Sale Contract Date: Mar 18, 2009
  • Previous Sale Amount: $620,000
  • 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

About Central Boulder


Similar Homes for Sale

Currently no similar homes around

Nearby Rentals

Unit for rent at 1240 Cedar Ave, CO, 80304

$1,642 /mo

  • 1 Bed
  • 1 Bath
1240 Cedar Ave, CO, 80304 Listing by Rick Rivera
Unit for rent at 2037 Walnut St, CO, 80302

$1,200 /mo

  • 1 Bed
  • 1 Bath
2037 Walnut St, CO, 80302 Listing by Rick Rivera


Frequently Asked Questions

When was property at 640 Iris Avenue built and last sold?
The property at 640 Iris Avenue was built in 1954 and last sold on Mar 18, 2009 for $620,000.
How much is this home worth?
The estimated value of the home located at 640 Iris Avenue is $5,485,304.
What are some comparable homes to 640 Iris Avenue?
There are currently no comparable homes to 640 Iris Avenue.