Perched atop the exclusive Ptarmigan neighborhood in Silverthorne, 421 Z Rd is a masterfully designed sanctuary blending cutting-edge sustainability with elevated mountain luxury. Situated on 1.25 acres—with the option to acquire an adjacent 1.25-acre parcel for a truly expansive estate—this bespoke 4-bedroom residence showcases some of Summit County’s most awe-inspiring views, spanning from Lake Dillon to the Gore Range. Every inch of this custom-built home has been meticulously curated to captivate the most discerning buyer. The striking copper-clad exterior makes a bold architectural statement, while inside, rich walnut cabinetry and one-of-a-kind Blue Marine Granite countertops—sourced by hand from Dallas, TX—set the tone for refined individuality. The chef’s kitchen is a showpiece of design and function, boasting premium appliances from Wolf, Dacor, and Miele, along with motorized cabinetry for seamless modern living. Even the dishwasher responds with a simple knock. Overhead, a custom interlocking wood ceiling and sculptural chandeliers elevate the aesthetic experience. Three expansive La Cantina floor-to-ceiling sliding glass walls disappear to reveal an unmatched indoor/outdoor lifestyle, flowing onto a composite deck complete with a hot tub overlooking the peaks. Ideal for buyers who value environmental consciousness without sacrificing comfort, the home features owned solar panels that slash utility costs by 80–90%, a cutting-edge SIPS roof, an advanced water treatment system, and a dedicated EV charging station. A greenhouse allows for year-round gardening and sustainability. In the luxurious primary suite, unwind in a spa-like steam shower or a soaking tub that dramatically fills from the ceiling. Located just minutes from world-class skiing and four-season recreation, this home is not only a residence—it’s a statement. 421 Z Rd offers a rare blend of eco-luxury, innovative design, and natural beauty, setting a new standard for Colorado mountain living.
Perched atop the exclusive Ptarmigan neighborhood in Silverthorne, 421 Z Rd is a masterfully designed sanctuary blending cutting-edge sustainability with elevated mountain luxury. Situated on 1.25 acres-with the option to acquire an adjacent 1.25-acre parcel for a truly expansive estate-this bespoke 4-bedroom residence showcases some of Summit County's most awe-inspiring views, spanning from Lake Dillon to the Gore Range. Every inch of this custom-built home has been meticulously curated to captivate the most discerning buyer. The striking copper-clad exterior makes a bold architectural statement, while inside, rich walnut cabinetry and one-of-a-kind Blue Marine Granite countertops-sourced by hand from Dallas, TX-set the tone for refined individuality. The chef's kitchen is a showpiece of design and function, boasting premium appliances from Wolf, Dacor, and Miele, along with motorized cabinetry for seamless modern living. Even the dishwasher responds with a simple knock. Overhead, a custom interlocking wood ceiling and sculptural chandeliers elevate the aesthetic experience. Three expansive La Cantina floor-to-ceiling sliding glass walls disappear to reveal an unmatched indoor/outdoor lifestyle, flowing onto a composite deck complete with a hot tub overlooking the peaks. Ideal for buyers who value environmental consciousness without sacrificing comfort, the home features owned solar panels that slash utility costs by 80-90%, a cutting-edge SIPS roof, an advanced water treatment system, and a dedicated EV charging station. A greenhouse allows for year-round gardening and sustainability. In the luxurious primary suite, unwind in a spa-like steam shower or a soaking tub that dramatically fills from the ceiling. Located just minutes from world-class skiing and four-season recreation, this home is not only a residence-it's a statement. 421 Z Rd offers a rare blend of eco-luxury, innovative design, and natural beauty, setting a new standard for Colorado mountain living.
SAR #S1059453
Aug 10, 2026
Price Changed
$2,999,000
$968/sq ft
Jul 28, 2026
Price Changed
$3,150,000
$1,017/sq ft
Jun 13, 2025
Listed
$3,300,000
$1,065/sq ft
+42
Perched atop the exclusive Ptarmigan neighborhood in Silverthorne, 421 Z Rd is a masterfully designed sanctuary blending cutting-edge sustainability with elevated mountain luxury. Situated on 1.25 acres—with the option to acquire an adjacent 1.25-acre parcel for a truly expansive estate—this bespoke 4-bedroom residence showcases some of Summit County’s most awe-inspiring views, spanning from Lake Dillon to the Gore Range. Every inch of this custom-built home has been meticulously curated to captivate the most discerning buyer. The striking copper-clad exterior makes a bold architectural statement, while inside, rich walnut cabinetry and one-of-a-kind Blue Marine Granite countertops—sourced by hand from Dallas, TX—set the tone for refined individuality. The chef’s kitchen is a showpiece of design and function, boasting premium appliances from Wolf, Dacor, and Miele, along with motorized cabinetry for seamless modern living. Even the dishwasher responds with a simple knock. Overhead, a custom interlocking wood ceiling and sculptural chandeliers elevate the aesthetic experience. Three expansive La Cantina floor-to-ceiling sliding glass walls disappear to reveal an unmatched indoor/outdoor lifestyle, flowing onto a composite deck complete with a hot tub overlooking the peaks. Ideal for buyers who value environmental consciousness without sacrificing comfort, the home features owned solar panels that slash utility costs by 80–90%, a cutting-edge SIPS roof, an advanced water treatment system, and a dedicated EV charging station. A greenhouse allows for year-round gardening and sustainability. In the luxurious primary suite, unwind in a spa-like steam shower or a soaking tub that dramatically fills from the ceiling. Located just minutes from world-class skiing and four-season recreation, this home is not only a residence—it’s a statement. 421 Z Rd offers a rare blend of eco-luxury, innovative design, and natural beauty, setting a new standard for Colorado mountain living.
SAR #S391147
Aug 26, 2015
Sold
$390,000
$126/sq ft
Mar 30, 2015
Listed
$429,000
$138/sq ft
Public Records
Mar 17, 2004
Sold
$360,000
$116/sq ft
Public Records
Oct 4, 2002
Sold
$285,000
$92/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$8,705 (+14.1%)
2024
$7,626 (−4.3%)
2023
$7,965 (+58.0%)
2022
$5,043 (−0.9%)
2021
$5,087 (+20.8%)
2020
$4,210 (+254.1%)
2019
$1,189 (−42.9%)
2018
$2,083 (+89.5%)
2017
$1,099 (−8.1%)
2016
$1,196 (+3.5%)
2014
$1,155
Public record
Public record
Zoning
Permits
Beds
4
Baths
3
Stories
2
Lot width
—
Lot depth
—
Lot size
1.25 Acres
Year renovated
—
Finished Sq. Ft.
3,098
Unfinished Sq. Ft.
—
Total Sq. Ft.
3,098
Year built
2017
Style
Single Family Residential
County
Summit County
APN
1300817
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on May 4, 2026.
R-1
Single-Family Residential District
It is the intent of the R-1 Zoning District to provide for single-family residential neighborhoods at a density of no more than 1 primary du per acre, with no more than 1 primary du per lot. Land in this zoning district is usually located adjacent to established urban growth centers. 1 acre lots are the minimum size on which onsite wastewater treatment is allowed.
Permitted uses
Include but are not limited to:
Garden center
Housing-Group
Housing-Single unit
Infrastructure
Educational/school
Communications tower
Housing-Mobile home park
Park & open space
Jan 20, 2025 • Final
Mech
Perform mechanical work and demolition for a new single-family home.
Demolition
New construction
Nov 15, 2019 • Final
Elec
Install a roof-mounted solar photovoltaic system on a residential building.
Electrical
Solar
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
1/10 Heat Factor
8 days above 78° expected this year, 22 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
2/10 Air Factor
1 unhealthy days expected this year, 3 days in 30 years
Provided by First Street
Historical weather
Silverthorne, CO • 80498
Average low and high temperatures (°F)
30
9
39
20
48
26
51
28
59
35
74
44
75
48
74
49
67
45
59
35
43
23
39
21
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
80/ 100
Very good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
8.8 hrs
5.2 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 421 Z Rd
We cannot show automated home-value estimates for this home.
Nearby homes have recently sold between $1,375,000 and $2,775,000.
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $1.4M to $2.8M.