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Silverthorne Neighborhood Guide
South Forty in Silverthorne
South Forty is one of Silverthorne's established single-family neighborhoods, on the north side of town along the Blue River. What sets it apart is space. Lots here run larger than most of what you find closer to the center of town, and the homes tend to be bigger too, mostly three to five bedrooms. You get an in-town location with quick access to shopping and the highway, but with trees, room, and a quieter feel than a denser subdivision. For an established Silverthorne home with real room around it, South Forty stands out for its larger lots and wooded, riverside setting.
Written by Tucker Zimmerman, Associate Broker with Slifer Smith & Frampton, who works the full Silverthorne market from the town core out to neighborhoods like South Forty.
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Home type
Established single-family homes
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Location
North Silverthorne, along the Blue River
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Lots
Generous, many near an acre
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Best for
Space and privacy close to town
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The quick take: South Forty is defined by space. Lots run larger and homes tend to be larger too, a few minutes from downtown Silverthorne. It is an established neighborhood with a real range of eras and finishes, so the specific house matters more here than the neighborhood name does.
What South Forty is, and who it fits
South Forty is an older, established part of Silverthorne. Homes went in over several decades, so on the same street you can find an original cabin next to a large, fully remodeled or newer custom home. The common thread is not a build year or a look, it is the land. Lots here are larger than the town norm, many of them wooded, some of them approaching a full acre, and a number of them sit along or near the Blue River.
Homes in an established neighborhood like South Forty are not interchangeable. Because the eras and finishes range so widely, two homes a few doors apart can be very different properties, which is why the specific house is worth looking at closely. South Forty suits someone who wants space and an established in-town setting, and who weighs the actual house rather than the neighborhood average.
The tradeoff: South Forty's range is both its strength and its complication. Some homes here are move-in-ready and modern and some are not, so condition and updates vary from property to property. For a home that needs work, the larger lots offer space that is hard to find elsewhere in town. Either way, the specific parcel, its condition, and its jurisdiction are what determine the answer for any given home.
Location and setting
South Forty sits on the north side of Silverthorne, off streets like Hillside Drive and Riverside Drive, close enough to downtown that you are minutes from the shops, restaurants, and the outlets, and quick to reach the highway. What you trade up for here is quiet and space. Many lots back to trees or open ground, several have west-facing views toward the Gore Range and Buffalo Mountain, and the Blue River runs along the neighborhood. It is the kind of setting that feels tucked away without actually being far from anything.
The homes and the lots
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The homes
Single-family homes, mostly three to five bedrooms, ranging from compact cabins to large custom builds. Eras and finishes vary widely, so condition and updates matter a lot on any given property. Two-car garages are common, and some homes carry oversized or additional garage and workshop space.
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The lots
Larger than the in-town norm, many wooded and some approaching a full acre. A number of parcels sit along or near the Blue River and carry private fishing rights or water rights for irrigation. This varies by parcel, so confirm what a specific home actually includes.
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A note on the market
Because homes in South Forty vary so much in size, era, and condition, a neighborhood average tells you very little about what any one house is worth. For current pricing and what is actually moving, lean on the live Silverthorne market reports rather than a headline number, and I am happy to pull recent comparable sales for the specific type of home you are considering.
Short-term rentals in South Forty
This is where the mailing address is the worst possible guide. Some South Forty parcels fall inside the Town of Silverthorne and some fall in unincorporated Summit County, even though they all share a Silverthorne address. Which program applies, the town's or the county's, and what short-term renting is allowed, is set by the exact parcel, not by the mail. Do not assume anything from the neighborhood name.
Before you count on rental income from a specific home, confirm the jurisdiction and the current rules on the Silverthorne short-term rental rules page, check the parcel on the Summit County GIS map, and read any HOA documents. The rules matter more than any projection.
South Forty: common questions
Where is South Forty in Silverthorne?
On the north side of Silverthorne along the Blue River, off streets like Hillside Drive and Riverside Drive, a few minutes from downtown. It has an in-town-but-quiet feel with quick access to shopping, dining, and the highway.
What kind of homes are in South Forty?
Single-family homes, mostly three to five bedrooms, on generous lots. Sizes range from compact cabins to large custom homes, so the specific property matters more than any neighborhood average.
When was South Forty built?
It is an established neighborhood built over several decades, with many homes from the 1970s through the 1990s. Because eras and finishes vary, you will see everything from original cabins to fully remodeled and newer custom homes.
Is South Forty in the Town of Silverthorne or unincorporated Summit County?
It depends on the exact parcel. Some South Forty addresses are inside the Town of Silverthorne and some are in unincorporated Summit County, even with a shared Silverthorne mailing address. That distinction affects which rules apply, so confirm it for any specific home.
Can you short-term rent a home in South Forty?
It depends on the parcel. Whether the Town of Silverthorne program or the Summit County program applies, and what each allows, is set by the exact location, not the mailing address. Verify with the Town of Silverthorne and check any HOA documents before relying on rental income.
How big are the lots in South Forty?
Larger than the typical in-town Silverthorne lot. Many run around a half acre to nearly a full acre, which is part of the appeal for buyers who want space and trees while staying close to town.
Does South Forty have river or fishing access?
Some properties sit along or near the Blue River and carry private fishing rights or water rights for irrigation. This varies by parcel, so confirm what a specific home actually includes rather than assuming it from the neighborhood.
Thinking about buying or selling in South Forty?
I work the full Silverthorne market and can walk you through how South Forty homes compare on lot, condition, and jurisdiction before you make an offer. Because the range here is so wide, this is a neighborhood where a good read on the specific house pays off. If you already own in South Forty and are thinking about selling, I can tell you honestly where your home stands.
A quick note: this page is written from real, on-the-ground knowledge of Silverthorne, not generated from a template. If something here does not match what you are seeing on a specific home, call me and I will give you the straight answer.
Related Silverthorne neighborhoods and resources
Information is deemed reliable but not guaranteed and is subject to change. Home details, lot sizes, water and fishing rights, jurisdiction, and short-term rental rules should be verified for any specific property before you rely on them. Tucker Zimmerman, Associate Broker, Slifer Smith & Frampton.
