421 Z Rd, Silverthorne, CO 80498
What's special
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, ...
- 296 days |
- 646 |
- 30 |
Originating MLS: Summit Association of RealtorsTravel times
Kitchen
Living Room
Primary Bedroom
Zillow last checked: 7 hours ago
Listing updated: March 26, 2026 at 01:30pm
Amy Nakos amy@amynakos.com,
Your Castle Summit, LLC,
Jennifer Luberto 201-424-9159,
Your Castle Summit, LLC
Originating MLS: Summit Association of RealtorsFacts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 4
- Full bathrooms: 1
- 3/4 bathrooms: 1
- 1/2 bathrooms: 2
Bedroom
- Level: Upper
Bedroom
- Level: Upper
Bedroom
- Level: Lower
Bedroom
- Level: Lower
Dining room
- Level: Upper
Other
- Level: Upper
Other
- Level: Lower
Half bath
- Level: Upper
Kitchen
- Level: Upper
Laundry
- Level: Lower
Living room
- Level: Upper
Other
- Level: Lower
Heating
- Radiant
Appliances
- Included: Built-In Oven, Double Oven, Dryer, Dishwasher, Electric Cooktop, Freezer, Disposal, Microwave, Refrigerator, Trash Compactor, Washer, Washer/Dryer
- Laundry: In Unit, See Remarks
Features
- 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)
- Flooring: Concrete, Wood
- Basement: None,Heated
- Number of fireplaces: 1
- Fireplace features: Gas
Interior area
- Total interior livable area: 3,098 sqft
Video & virtual tour
Property
Parking
- Total spaces: 2
- Parking features: Attached, Garage
- Garage spaces: 2
Features
- Levels: Two,Multi/Split
- Has view: Yes
- View description: Lake, Mountain(s)
- Has water view: Yes
- Water view: Lake
Lot
- Size: 1.25 Acres
- Features: See Remarks
Details
- Parcel number: 1300817
- Zoning description: Single Family
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- Foundation: Poured
- Roof: Metal
Condition
- Resale
- Year built: 2017
Utilities & green energy
- Sewer: Septic Tank
- Water: Well
- Utilities for property: Electricity Available, High Speed Internet Available, Propane, Septic Available
Green energy
- Energy efficient items: Appliances, Construction, Doors, Exposure/Shade, HVAC, Insulation, Lighting, Roof, Thermostat, Water Heater, Windows
Community & HOA
Community
- Features: Trails/Paths
- Subdivision: Government Tracts 6-5-77 Sub
HOA
- Has HOA: No
Location
- Region: Silverthorne
Financial & listing details
- Price per square foot: $1,065/sqft
- Tax assessed value: $2,508,300
- Annual tax amount: $7,626
- Date on market: 6/13/2025
- Exclusions: No
- Road surface type: Dirt
Price history
| Date | Event | Price |
|---|---|---|
| 6/13/2025 | Listed for sale | $3,300,000+746.2%$1,065/sqft |
Source:  Altitude Realtors #S1059453 Report a problem | ||
| 8/26/2015 | Sold | $390,000$126/sqft |
Source: Altitude Realtors #S391147 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $7,626 -4.3% | $156,769 +3.7% |
| 2024 | $7,965 +58% | $151,125 -1% |
| 2023 | $5,042 -0.9% | $152,591 +72.9% |
| 2022 | $5,086 +20.8% | $88,258 -2.8% |
| 2021 | $4,210 +254.1% | $90,798 +295% |
| 2019 | $1,189 -99% | $22,989 -23.8% |
| 2017 | $119,600 +10780.3% | $30,182 +25.1% |
| 2016 | $1,099 -8.1% | $24,130 |
| 2015 | $1,196 +3.2% | $24,130 +1.6% |
| 2014 | $1,159 +0.3% | $23,752 |
| 2013 | $1,155 | $23,752 -23.2% |
| 2012 | -- | $30,913 |
| 2011 | -- | $30,913 -9.9% |
| 2010 | -- | $34,326 |
Find assessor info on the county website
Monthly payment
Estimated market value
Not available
Estimated sales range
Not available
$7,891/mo
Climate risks
Explore flood, wildfire, and other predictive climate risk information for this property on First Street®️.
Neighborhood: 80498
Nearby schools
GreatSchools rating
- 5/10Silverthorne Elementary SchoolGrades: PK-5Distance: 2 mi
- 4/10Summit Middle SchoolGrades: 6-8Distance: 4.3 mi
- 5/10Summit High SchoolGrades: 9-12Distance: 5.2 mi
Schools provided by the listing agent
- Elementary: Silverthorne
- Middle: Summit
- High: Summit
Source: Altitude Realtors. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.