Extensive planning, approvals, and infrastructure improvements have already been completed, including utilities installed to the homesite, site grading, and a spectacular architectural vision by the renowned team at Charles Cunniffe Architects. As a result, the typical 3-5 year entitlement and development timeline has been dramatically reduced to approximately 12-15 months, creating significant time and cost savings for the future owner...Aspen's ultimate estate building site awaits on a serene 10-acre parcel perched atop a bluff overlooking Castle Creek. Offering an extraordinary combination of privacy, proximity, and development readiness, this exceptional property presents a rare opportunity to create a world-class mountain estate just minutes from downtown Aspen. Surrounded by nature and benefiting from coveted end-of-the-road privacy, the property captures sweeping panoramic views of Mt. Hayden to the south, Aspen Highlands to the west, and Aspen Mountain to the east. The setting is so secluded that the proposed residence easily satisfied Pitkin County's stringent visibility requirements for homes within Castle Creek Valley Ranch. Despite its tranquil atmosphere, the property is located just four miles from downtown Aspen, providing effortless access to world-class skiing, dining, shopping, and cultural amenities while preserving the privacy, serenity, and expansive open space that define Colorado mountain living.
Property address: 640 S Hayden Rd, Aspen, CO 81611
Financial info
Active listing status
2025 property tax year with annual tax amount of $59,400.84
Other
Directions: From the roundabout on Hwy 82, take Castle Creek Road past the hospital for 2.8 miles then turn right onto S. Hayden Road. Go 0.7 miles; the property is on the left.
Electricity and solar
View estimated energy costs and solar savings for this home
Aspen’s ultimate estate building site on 10 acres located on a bluff above Castle Creek. All the work has been done to build a 15,000 square foot residence (or less) – land use approvals have been secured and utilities to the building site, re-grading of the large, gently sloping building site and architectural studies and full plans by award-winning Charles Cunniffe Architects have all been completed. Dramatic views to the south of Mt. Hayden, Aspen Highlands to the west and Aspen Mountain to the east. The site is so private that the architectural proposal for the lot easily satisfied the County requirements for all building sites in Castle Creek Valley Ranch regarding visibility of structures from Castle Creek Road.With just a 4 mile drive to the center of Aspen, this parcel is close to Town and yet has just the right amount of privacy and acreage. With just a 4 mile drive to the center of Aspen, this parcel is close to Town and yet has just the right amount of privacy and acreage.
Public Records
Mar 6, 2015
Sold
$5,750,000
Year
Property tax
Land + Additions
Assessment*
2025
$59,401 (−7.3%)
$1,890,000
2024
$64,070 (+9.6%)
$1,890,000
2023
$58,440 (+27.7%)
$2,232,000
2022
$45,778 (+3.2%)
$2,232,000
2021
$44,377 (−9.8%)
$1,450,000
2020
$49,187 (+0.5%)
$1,450,000
2019
$48,919 (−8.2%)
$1,595,000
2018
$53,315 (+15.2%)
$1,595,000
2017
$46,286 (+81.0%)
$1,740,000
2016
$25,574 (+27.8%)
$1,740,000
2014
$20,006
$942,500
Public record
Beds
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Baths
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Stories
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Lot width
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Lot depth
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Lot size
10.8 Acres
Year renovated
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Finished Sq. Ft.
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Unfinished Sq. Ft.
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Total Sq. Ft.
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Year built
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Style
Vacant Land
County
Pitkin County
APN
R014167
Parking Spaces
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Basement
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Accessible
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HOA Dues
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Garage
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Features
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Last updated by owner on Aug 17, 2026.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.31% chance of being in a wildfire in next 30 years
1/10 Heat Factor
7 days above 73° expected this year, 20 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
3/10 Air Factor
2 unhealthy days expected this year, 3 days in 30 years
Provided by First Street
Historical weather
Aspen, CO • 81611
Average low and high temperatures (°F)
32
11
41
21
51
28
53
30
62
37
77
47
81
53
77
51
67
42
60
35
44
23
39
19
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
58/ 100
Moderate sunlight
Sunscore
There appears to be some shading by surrounding buildings, terrain, and vegetation.
6.9 hrs
3.3 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 640 S Hayden Rd
$10,944,177
$1.9M under list price of $12.9M
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $700K to $15.8M.