$3,300,000

Estimated payment $18,132/month

Total Views 2,686
4 Beds
4 Baths
3,098 Sq Ft
$1,065 Price per Sq Ft

Highlights

  • Primary Bedroom Suite
  • 1.25 Acre Lot
  • Vaulted Ceiling
  • Lake View
  • Green Roof
  • Wood Flooring

About This Home

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.

Listing Agent

Amy Nakos

Your Castle Summit, LLC Brokerage Email: amy@amynakos.com License #ER40042506 Listed on: 06/13/2025

Your Castle Summit, LLC

Co-Listing Agent

Jennifer Luberto

Your Castle Summit, LLC Brokerage Email: amy@amynakos.com License #FA100093391

Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $7,626

Year Built

  • Built in 2017

Lot Details

  • 1.25 Acre Lot
  • Dirt Road

Parking

  • 2 Car Attached Garage

Property Views

  • Lake
  • Mountain

Home Design

  • Split Level Home
  • Concrete Foundation
  • Metal Roof

Interior Spaces

  • 3,098 Sq Ft Home
  • 2-Story Property
  • Partially Furnished
  • Built-In Features
  • Vaulted Ceiling
  • Ceiling Fan
  • Skylights
  • Gas Fireplace
  • Heated Basement
  • Smart Thermostat

Kitchen

  • Eat-In Kitchen
  • Built-In Double Oven
  • Electric Cooktop
  • Microwave
  • Freezer
  • Dishwasher
  • Kitchen Island
  • Quartz Countertops
  • Trash Compactor
  • Disposal

Flooring

  • Wood
  • Concrete

Bedrooms and Bathrooms

  • 4 Bedrooms
  • Primary Bedroom Suite
  • Walk-In Closet

Laundry

  • Laundry in unit
  • Washer and Dryer

Eco-Friendly Details

  • Green Roof
  • Energy-Efficient Windows
  • Energy-Efficient Exposure or Shade
  • Energy-Efficient Construction
  • Energy-Efficient HVAC
  • Energy-Efficient Lighting
  • Energy-Efficient Insulation
  • Energy-Efficient Doors
  • Energy-Efficient Thermostat

Schools

  • Silverthorne Elementary School
  • Summit Middle School
  • Summit High School

Utilities

  • Radiant Heating System
  • Propane
  • Well
  • Water Heater
  • Septic Tank
  • Septic System
  • High Speed Internet

Listing and Financial Details

  • Assessor Parcel Number 1300817

Community Details

Overview

  • No Home Owners Association
  • Government Tracts 6 5 77 Sub Subdivision

Recreation

  • Trails

Home Details

Home Type

Single Family

Est. Annual Taxes

$7,626

Year Built

Built in 2017

Lot Details

0

Parking

2

Listing Details

  • Property Sub Type: Single Family Residence
  • Prop. Type: Residential
  • Lot Size Acres: 1.25
  • Road Surface Type: Dirt
  • Co List Office Mls Id: 5081
  • Co List Office Phone: (970) 620-8554
  • Subdivision Name: GOVERNMENT TRACTS 6-5-77 SUB
  • Directions: From Highway 6, turn right on to Rainbow Drive. Take next right on to Tanglewood Lane. Turn right on to Ptarmigan Trail. Keep left on CO Road 2020. Turn right on to Barking Dog Court which turns into Z Road. Home will be on the left.
  • Garage Yn: Yes
  • Unit Levels: Two, Multi/Split
  • Efficiency: Appliances, Construction, Doors, Exposure/Shade, HVAC, Insulation, Lighting, Roof, Thermostat, Water Heater, Windows
  • Year Built: 2017
  • Property Sub Type Additional: Single Family Residence
  • Special Features: VirtualTour

Interior Features

  • Furnished: Partially
  • Appliances: Built-In Oven, Double Oven, Dryer, Dishwasher, Electric Cooktop, Freezer, Disposal, Microwave, Refrigerator, Trash Compactor, Washer, Washer/Dryer
  • Has Basement: None, Heated
  • Basement YN: No
  • Full Bathrooms: 1
  • Half Bathrooms: 2
  • Three Quarter Bathrooms: 1
  • Total Bedrooms: 4
  • Fireplace Features: Gas
  • Fireplaces: 1
  • Fireplace: Yes
  • Flooring: Concrete, Wood
  • Interior Amenities: Built-in Features, Ceiling Fan(s), Five Piece Bathroom, Fireplace, High Ceilings, Kitchen Island, Primary Suite, Pantry, Quartz Counters, Skylights, Smart Thermostat, Vaulted Ceiling(s), Walk-In Closet(s)
  • Living Area: 3098.0
  • Dining Room Type: Eat-in Kitchen, Other

Exterior Features

  • Lot Features: See Remarks
  • View: Lake, Mountain(s)
  • View: Yes
  • Exclusions: No
  • Foundation Details: Poured
  • Property Condition: Resale
  • Roof: Metal

Garage/Parking

  • Garage Spaces: 2.0
  • Parking Features: Attached, Garage

Utilities

  • Laundry Features: In Unit, See Remarks
  • Green Building Features: Not Applicable
  • Heating: Radiant
  • Heating Yn: Yes
  • Sewer: Septic Tank
  • Utilities: Electricity Available, High Speed Internet Available, Propane, Septic Available
  • Water Source: Well

Condo/Co-op/Association

  • Community Features: Trails/Paths
  • Association: No
  • Pets Allowed: Yes

Schools

  • Elementary School: Silverthorne
  • High School: Summit
  • Middle Or Junior School: Summit

Lot Info

  • Current Use: Residential
  • Lot Size Sq Ft: 54450.0
  • Parcel #: 1300817
  • Zoning Description: Single Family

Green Features

  • Green Building Verification Type: Unknown

Tax Info

  • Tax Annual Amount: 7626.04
  • Tax Year: 2024

Map

Range of Values:

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Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2024 $7,965 $151,125 -- --
2023 $7,965 $147,440 $0 $0
2022 $5,043 $88,258 $0 $0
2021 $5,087 $90,798 $0 $0
2020 $4,210 $80,279 $0 $0
2019 $1,189 $22,989 $0 $0
2018 $2,083 $39,034 $0 $0
2017 $1,099 $22,516 $0 $0
2016 $1,196 $24,130 $0 $0
2015 $1,159 $24,130 $0 $0
2014 $1,155 $23,752 $0 $0
2013 -- $23,752 $0 $0
Source: Public Records

Property History

Date Event Price Change Sq Ft Price
06/13/2025 06/13/25 For Sale $3,300,000 +746.2% $1,065 / Sq Ft
08/26/2015 08/26/15 Sold $390,000 0.0% $271 / Sq Ft
07/27/2015 07/27/15 Pending -- -- --
03/30/2015 03/30/15 For Sale $390,000 -- $271 / Sq Ft
Source: Summit MLS

Source: Summit MLS

MLS Number: S1059453

Summit MLS

APN: 1300817