Last Sold Price
4 beds5,617 sqft$409/sqft
8566 Flagstaff Rd, Boulder, CO 80302

Description

Spectacular 5,000 sq. ft. Mountain Retreat on 35 acres off Flagstaff Road with jaw-dropping views of Indian Peaks Wilderness, Eldorado Canyon, Gross Reservoir, and Thorodin Mountain. Massive windows with lots of natural light provide breathtaking views of mountains and wildlife. Beautiful entryway with tranquil koi pond welcomes you to a spacious and light-filled living room, dining room, and kitchen with vaulted ceilings, bamboo floors, and lovely stonework, including a statement fireplace. Entertainment...Spectacular 5,000 sq. ft. Mountain Retreat on 35 acres off Flagstaff Road with jaw-dropping views of Indian Peaks Wilderness, Eldorado Canyon, Gross Reservoir, and Thorodin Mountain. Massive windows with lots of natural light provide breathtaking views of mountains and wildlife. Beautiful entryway with tranquil koi pond welcomes you to a spacious and light-filled living room, dining room, and kitchen with vaulted ceilings, bamboo floors, and lovely stonework, including a statement fireplace. Entertainment possibilities abound inside the open floor plan with great flow as well as outside on the expansive deck - perfect for yoga or meditation retreats and large gatherings. Large primary suite with its own fireplace, five-piece bathroom with jetted tub, and dual, large walk-in closets. New interior paint, appliances, fixtures, and carpet. Additional bedrooms with en-suite bathrooms and panoramic views are perfect for family and guests. Lots of flexible space for storage, exercise, and home offices. The downstairs area with separate entrance has options for an in-law or au pair suite. Oversized heated three-car garage has massive storage rooms and a dog-washing station. Enjoy fully owned solar panels, radiant heated floors, and a separate entrance to a large insulated crawl space. This beautiful serene mountain setting only 20 minutes from downtown Boulder offers equestrian and recreation possibilities, including hiking at Walker Ranch and boating and fishing at Gross Reservoir. Welcome Home to this one-of-a-kind sanctuary!
LISTING CLOSED: 08/01/2025 12:00 AM

  1. Listed by Mary Siefert • Live West Realty
    P: (303) 594-9933 C: (303) 594-9933 siefert.mary@gmail.com

Property Details for 8566 Flagstaff Road

Status
MLS #
1029616
Days on Compass
127
Taxes
$13,605 / year
HOA Fees
-
Condo/Co-op Fees
-
Property Type
MLS Type
Residential / Single Family Residence
Year Built
2000
Lot Size
33.95 AC / 1,478,862 SF
Locale
Boulder
Description 1
House

Recent comparable sales

Median sold price

$2,330,000

Avg days on market

131

Sale-to-list ratio

90.3%

Boulder, CO

9 comparable properties found

an aerial view of a
1/41
1

$2,300,000

Sold 12/10/24

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Bedrooms
4,072
Square Feet
3.26
Acres
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Bedrooms
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Square Feet
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Acres
$2,420,000 | 3917 Orchard Court, Boulder, CO 80304
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3

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Sold 08/07/26

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Bedrooms
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Square Feet
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Acres
$2,075,000 | 230 South Cedar Brook Road, Boulder, CO 80304
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Square Feet
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Acres
$2,330,000 | 910 Kalmia Avenue, Boulder, CO 80304
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4
Bedrooms
5,371
Square Feet
0.24
Acres
a front view of a house with a yard and large trees
1/44
6

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Sold 12/15/25

4
Bedrooms
4,805
Square Feet
0.20
Acres
$1,850,000 | 4818 6th Street, Boulder, CO 80304
1/50
7

$1,850,000

Sold 06/05/26

4
Bedrooms
5,456
Square Feet
0.25
Acres
a front view of house with a garden
1/39
8

$2,700,000

Sold 11/01/24

4
Bedrooms
4,741
Square Feet
0.35
Acres
9

$1,870,000

Sold 04/30/26

4
Bedrooms
3.75
Bathrooms
4,414
Square Feet
35.43
Acres

Location

Listing Courtesy of Live West Realty, Mary Siefert

Sold By Non-IRES, Non-IRES Agent

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Building Information for 8566 Flagstaff Road

Stories-Year Built2000Building Size-Lot Size33.95 AC / 1,478,862 SF

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Principal and Interest

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Property Taxes

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Property Information for 8566 Flagstaff Road

Summary
Location and General Information
  • Road Access 2: Privately Maintained
  • Latitude: 39.96
  • Longitude: -105.35
Parking
  • Garage SqFt: 1083
  • Total Parking: 3.00
  • Parking Features: Garage Door Opener, Attached
Taxes and HOA Information
  • Has HOA: No
  • HOA Fee: $.00
  • Legal Description: TR 6 PARCEL A 35.10 ACS M/L SPLIT PER OWNER 06/99 SEE ID 141998 AKA PT TRACTS 40 & 41
  • Tax Information: No
  • HOA2 Fee Amount: $0
  • Tax Year: 2024
  • 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: $13,605
  • Parcel Number: R0100432
Property
Lot Information
  • Lot Improvements: Wooded, Evergreen Trees, Deciduous Trees, Native Grass, Sloping Lot, Abuts National Forest, Abuts Public Open Space, Meadow, House Faces North
  • Lot Size Area: 1,478,819.00
  • Has Irrigation Water Rights: No
  • Has Improvements: No
  • Vegetation: Grassed, Wooded
Property and Assessments
  • Total Finished Area Source: Assessor
  • Living SqFt: 5074
  • Above Grade Finished Area Source: 5074
  • Sq Ft Apx: 0
  • Total Finished Area: 5074
  • Property Attached YN: No
  • Are Ditches Active: No
  • Security Features: Fire Sprinkler System, Security System
  • New Construction YN: No
  • Levels: Tri-Level
Utilities
  • Electric: Xcel
  • Sewer: Septic Tank
  • Green Energy Efficient: Windows
Interior and Exterior Features
Exterior Features
  • Construction Materials: Frame, Stone, Stucco
  • Exterior Features: Balcony, Heated Garage, Oversized Garage
  • Flooring: Wood
Interior Features
  • Interior Features: Eat-in Kitchen, Cathedral Ceiling(s), Open Floorplan, Pantry, Bay or Bow Window, Walk-In Closet(s), Washer/Dryer Hookup, Skylights, Kitchen Island, Steam Shower, Split Bedroom Plan, Central Vacuum, 5 Piece Primary Bath
  • Laundry Features: Down Draft, Dishwasher, Refrigerator, Washer, Dryer, Microwave, Disposal, Fire Alarm
  • Spa Features: Bath
  • Window Features: Skylight(s), Window Coverings
  • Other Equipment: Satellite Dish
  • Fireplaces 1: Two or More, Bedroom, Great Room
  • All Bedrooms Conform: Yes
  • Full Bathrooms: 3
  • 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: 1
  • Baths Half Additional: 0
  • Baths Half Basement: 0
  • Baths Half Upper: 0
  • Baths Half Main: 0
  • Baths Half Lower: 0
  • Baths Three Quarters Additional: 0
  • Baths Three Quarters Basement: 0
  • Baths Three Quarters Lower: 0
  • Baths Three Quarters Upper: 0
  • Baths Three Quarters Main: 1
Room Information
Room 1
  • RoomDescription: Carpet
  • RoomLevel: Upper
  • RoomType: Bedroom 2
Room 2
  • RoomDescription: Carpet
  • RoomLevel: Lower
  • RoomType: Bedroom 3
Room 3
  • RoomDescription: Bamboo
  • RoomLevel: Main
  • RoomType: Dining Room
Room 4
  • RoomDescription: Bamboo
  • RoomLevel: Main
  • RoomType: Great Room
Room 5
  • RoomDescription: Bamboo
  • RoomLength: 21.0
  • RoomLevel: Main
  • RoomType: Kitchen
  • RoomWidth: 14.0
Room 6
  • RoomLevel: Main
  • RoomType: Laundry
Room 7
  • RoomDescription: Bamboo
  • RoomLength: 16.0
  • RoomLevel: Main
  • RoomType: Primary Bedroom
  • RoomWidth: 14.0
  • Room Features: 5 Piece Primary Bath
Room 8
  • RoomDescription: Bamboo
  • RoomLevel: Main
  • RoomType: Study
Rental
Rental Information
  • Horse YN: No
  • Occupant Type: Vacant

Property History for 8566 Flagstaff Road

DateEvent & SourcePriceAppreciation
Jul 29, 2025

Sold (Public Record)

Public Record #1907506902

$2,300,000
DateEvent & SourcePrice
07/29/2025

Sold (Public Record)

Public Record #1907506902

$2,300,000

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

Public Records for 8566 Flagstaff Road

Taxable ValueLand$24,936Additions$133,865Total$158,801
Tax Record2025$13,355 ($1,113 / month)
Home Facts
Beds3Baths3.8Total Finished SqFt5,617 SqFtAbove Grade Finished SqFt5,074 SqFtFinished Basement SqFt543 SqFtStories1Lot Size1,478,819 SqFtStyleSingle Family ResidenceYear Built2000Year Renovated2000ZoningFCountyBOULDERAPNR0100432

Schools near 8566 Flagstaff Road

This home is within Boulder Valley Re 2 School District.
Rating
School
Type
Grades
Distance
Public - K to 5
Public - 6 to 8
Public - 9 to 12
Public - PK to 5
Rating
School
Distance
Flatirons Elementary School
PublicK to 5

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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Nearby home values

AddressSold priceBedsBathsSqftLot (Sqft)
This home: 8566 Flagstaff Road, Boulder, CO 80302
$2,300,000
4
5,617
1,478,862
1
1.75
960
133,448
3
1
1,008
60,613
3
2.5
1,802
61,476
$110,000
54,450
90,085

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of any information, descriptions or measurements (including square footage measurements and property condition), such should be independently verified through appropriate means, including, but not limited to, in person inspection and public records, and Compass International Holdings, its subsidiaries, affiliates and independently owned and operated franchisees, and their affiliated agents and associated third parties expressly disclaim 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 seller's discretion. No financial or legal advice provided. Equal Housing Opportunity. Subject to change at any time. Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties make no guarantee, warranty or representation regarding the accuracy of any waterfront feature, water view or waterfront view.

Listing Courtesy of Live West Realty, Mary Siefert

Based on information submitted to the MLS GRID as of 08/01/2026 04:16 AM. 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.