550 College Ave

Boulder, CO 80302

$1,995,000
Last Sold Price
4
Beds
2,550 Sq. Ft.
$782 / Sq. Ft.
2,550
Sq. Ft.
$782
per Sq. Ft.
Get preapproved with Rocket Mortgage1
Sold 11/15/22
Sold 11/15/22
an aerial view of a house with swimming pool and garden
a living room with furniture a fireplace and decor
a building outdoor space with patio furniture
a view of an outdoor space with a table and chairs
a dining room with furniture and wooden floor
a living room with furniture a rug and a chandelier
a living room with furniture
a view of a tables and chair in the balcony
a kitchen with stainless steel appliances granite countertop a sink a stove and a microwave
a dining room with a table and chairs
a view of living room and kitchen
a outdoor living with furniture
a bathroom with a toilet and a sink
a view of entryway
a living room with furniture and a window
a living room with furniture and a window
a living room with a bed furniture and a window
a kitchen view with a sink stove and cabinets
a living room with furniture and a rug
a bedroom with a bed window and a chandelier
a bedroom with a bed and wooden floor
a bedroom with a bed and a dresser
a view of a room with furniture and a window
a bathroom with a toilet and a shower
a view of backyard with a table and chairs and potted plants
a view of a patio with table and chairs under an umbrella
a backyard of a house with table and chairs
a view of outdoor space yard deck patio and swimming pool
a outdoor view with sitting space
a view of a patio with couches table and chairs and potted plants
a view of house and outdoor space
an aerial view of a house with swimming pool and trees
an aerial view of a house with garden space and street view
a view of a house with backyard and sitting area
a view of a yard in front of the house

Description

Live at one with nature in the landmarked Wilson-Haertling House, one of Boulder's most architecturally significant residences. Designed and built by Charles Haertling, this four-bedroom, three-bathroom landmark embodies the famed architect's organic, modern style, inspired by masters Frank Lloyd Wright and Bruce Goff. From the home's organic clover-shaped symmetry to the nautilus-topped support beams, the 2,550-square-foot architectural masterpiece references nature throughout. The one-of-a-kind...Live at one with nature in the landmarked Wilson-Haertling House, one of Boulder's most architecturally significant residences. Designed and built by Charles Haertling, this four-bedroom, three-bathroom landmark embodies the famed architect's organic, modern style, inspired by masters Frank Lloyd Wright and Bruce Goff. From the home's organic clover-shaped symmetry to the nautilus-topped support beams, the 2,550-square-foot architectural masterpiece references nature throughout. The one-of-a-kind home features vaulted ceilings, hardwood floors, abundant windows overlooking decks and a verdant, terraced yard. The great room offers a fireplace, open kitchen and indoor-outdoor flow. Beds and baths on three levels. Beautifully maintained and updated. Located in the gorgeous Flagstaff neighborhood, steps to trails, Chautauqua attractions & Flagstaff. The Fox Theater, CU Campus, Pearl Street and Downtown Boulder, CO are all nearby. Open House Saturday 10/15 from 2-4pm and Sunday 10/16 from 1-3pm.

Listing Agent

  1. Zach Zeldner

    Zach Zeldner

    Listing Agent

    Compass

    zach.zeldner@compass.com

    P: (720)-480-7650

    CallTextEmail

Property Details for 550 College Avenue

Locale
Boulder
Description 1
House
LISTING UPDATED: 10/20/2025 07:40 PM

Property Details for 550 College Avenue

StatusSold
MLS #977160
Days on Compass26
Taxes$8,640 / year
HOA Fees-
Condo/Co-op Fees-
Compass TypeSingle Family
MLS TypeResidential / Single Family Residence
Year Built1968
Lot Size0.15 AC / 6,534 SF
CountyBoulder County
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Location

Sold By Christie's International Real Estate Colorado LLC, Jonathan Boxer

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Building Information for 550 College Avenue

Stories-Year Built1968Building Size-Lot Size0.15 AC / 6,534 SF

Payment Calculator

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OriginPoint Mortgage or Rocket Mortgage1

$10,443 per month

30 year fixed, 6.15% Interest

Principal and Interest

$9,723

Property Taxes

$720

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

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Property Information for 550 College Avenue

Summary
Location and General Information
  • Road Access 2: City Street
  • Latitude: 40.01
  • Longitude: -105.29
Parking
  • Total Parking: 1.00
Taxes and HOA Information
  • Has HOA: No
  • HOA Fee: $.00
  • Legal Description: LOT 4 & N 1/2 VAC ALLEY LOT 4 BLK 1 GENEVA PARK
  • Tax Information: No
  • HOA2 Fee Amount: $0
  • Tax Year: 2021
  • HOA Transfer Fee: No
  • HOA 2 Transfer Fee: No
  • Has Association Fee: No
  • Has Association 2 Fee: No
  • Has Association Reserve: No
  • Has Association 2 Reserve: No
  • Tax Annual Amount: $8,640
  • Parcel Number: R0003318
Property
Lot Information
  • Lot Improvements: Evergreen Trees, Deciduous Trees, Paved
  • Lot Size Area: 6,697.00
  • Has Irrigation Water Rights: No
  • Has Improvements: No
  • Vegetation: Wooded
Property and Assessments
  • Total Finished Area Source: Assessor
  • Living SqFt: 2550
  • Above Grade Finished Area Source: 2550
  • Sq Ft Apx: 0
  • Total Finished Area: 2550
  • Are Ditches Active: No
  • New Construction YN: No
  • Levels: Two
Utilities
  • Electric: Xcel
  • Sewer: Public Sewer
  • Green Energy Efficient: High Efficiency Furnace
Interior and Exterior Features
Exterior Features
  • Construction Materials: Frame
  • Flooring: Wood
Interior Features
  • Interior Features: Cathedral Ceiling(s), 3/4 Primary Bath
  • Laundry Features: Electric Range, Dishwasher, Refrigerator, Washer, Dryer
  • Window Features: Window Coverings
  • Fireplaces 1: Living Room
  • All Bedrooms Conform: Yes
  • Full Bathrooms: 2
  • Half Bathrooms: 0
  • Rough-in Bathrooms: 0
  • Three Quarters Bathrooms: 1
  • Baths Full Additional: 0
  • Baths Full Basement: 0
  • Baths Full Upper: 1
  • Baths Full Main: 1
  • Baths Full Lower: 0
  • Baths Half Additional: 0
  • Baths Half Basement: 0
  • Baths Half Upper: 0
  • Baths Half Main: 0
  • Baths Half Lower: 0
  • Baths Three Quarters Additional: 1
  • Baths Three Quarters Basement: 0
  • Baths Three Quarters Lower: 0
  • Baths Three Quarters Upper: 0
  • Baths Three Quarters Main: 0
Room Information
Room 1
  • RoomDescription: Wood
  • RoomLength: 15.0
  • RoomLevel: Upper
  • RoomType: Bedroom 2
  • RoomWidth: 13.0
Room 2
  • RoomDescription: Carpet
  • RoomLength: 11.0
  • RoomLevel: Main
  • RoomType: Bedroom 3
  • RoomWidth: 20.0
Room 3
  • RoomDescription: Carpet
  • RoomLength: 18.0
  • RoomLevel: Main
  • RoomType: Bedroom 4
  • RoomWidth: 10.0
Room 4
  • RoomDescription: Wood
  • RoomLength: 9.0
  • RoomLevel: Upper
  • RoomType: Dining Room
  • RoomWidth: 10.0
Room 5
  • RoomDescription: Tile
  • RoomLength: 9.0
  • RoomLevel: Upper
  • RoomType: Kitchen
  • RoomWidth: 17.0
Room 6
  • RoomDescription: Tile
  • RoomLength: 13.0
  • RoomLevel: Main
  • RoomType: Laundry
  • RoomWidth: 9.0
Room 7
  • RoomDescription: Wood
  • RoomLength: 22.0
  • RoomLevel: Upper
  • RoomType: Living Room
  • RoomWidth: 19.0
Room 8
  • RoomDescription: Wood
  • RoomLength: 17.0
  • RoomLevel: Additional
  • RoomType: Primary Bedroom
  • RoomWidth: 17.0
  • Room Features: 3/4 Primary Bath
Room 9
  • RoomDescription: Carpet
  • RoomLength: 12.0
  • RoomLevel: Main
  • RoomType: Recreation Room
  • RoomWidth: 20.0
Rental
Rental Information
  • Horse YN: No
  • Occupant Type: Owner

Property History for 550 College Avenue

DateEvent & SourcePriceAppreciation
Mar 12, 2025

Sold (Public Record)

Public Record #1553708214

$2,150,000

+3.3% / yr

Nov 15, 2022

Sold (Public Record)

Public Record #1500923834

$1,995,000

-8.8% / yr

Sep 7, 2021

Sold (Public Record)

Public Record #1471533418

$2,225,000—
DateEvent & SourcePrice
03/12/2025

Sold (Public Record)

Public Record #1553708214

$2,150,000

+3.3% / yr

11/15/2022

Sold (Public Record)

Public Record #1500923834

$1,995,000

-8.8% / yr

09/07/2021

Sold (Public Record)

Public Record #1471533418

$2,225,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 550 College Avenue

Taxable ValueLand$91,013Additions$50,406Total$141,419
Tax Record2025$13,484 ($1,124 / month)
Home Facts
Beds4Baths1.8Total Finished SqFt2,438 SqFtAbove Grade Finished SqFt1,425 SqFtFinished Basement SqFt1,013 SqFtUnfinished Basement SqFt112 SqFtStories2Lot Size6,708 SqFtStyleSingle Family ResidenceYear Built1968Year Renovated1980Zoning1112CountyBOULDERAPN1461-36-4-05-013

Schools near 550 College Avenue

This home is within Boulder Valley Re 2 School District.
Rating
School
Type
Grades
Distance
Flatirons Elementary School
Public - K to 5
Manhattan Middle School Of The Arts And Academics
Public - 6 to 8
Boulder High School
Public - 9 to 12
University Hill Elementary School
Public - PK to 5
Rating
School
Distance
Flatirons Elementary School
PublicK to 5

Manhattan Middle School Of The Arts And Academics
Public6 to 8

Boulder High School
Public9 to 12

University Hill Elementary School
PublicPK to 5

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity. Subject to change at any time. Compass makes no guarantee, warranty or representation regarding the accuracy of any waterfront feature, water view or waterfront view.

Based on information submitted to the MLS GRID as of 10/20/2025 07:40 PM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Properties displayed may be listed or sold by various participants in the MLS. IDX information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. Use of the MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS of the Member Participant, if any, and as amended from time to time.