Summit County Real Estate / Short-Term Rental Guide

2026 Unincorporated Summit County Short-Term Rental Rules

Unincorporated Summit County has the most complex STR framework in the region. Your property's rules depend on which overlay zone it sits in, and within the residential zone, which of four drainage basins. The mailing address tells you almost nothing. Wildernest has a Silverthorne address but is not Silverthorne. Dillon Valley has a Dillon address but is not Dillon. Getting this wrong before you make an offer is an avoidable and expensive mistake.

Written by Tucker Zimmerman, Associate Broker, Slifer Smith & Frampton — Summit County, Colorado
303-907-9129  |  TZimmerman@SliferSummit.com

Updated July 2026

A Word About Summit County's Published STR Information

I'll be direct: Summit County's published STR information is a mess. The county's regulations page shows cap numbers that imply licenses are available in basins where no new applications are being accepted. The waitlist documents are updated once a year while the county issues licenses from those same waitlists on a rolling basis throughout the year. The published numbers and the actual situation do not match, and there is no single page on the county's website that reconciles them.

I monitor this program closely and I still can't get a reliable current answer from the county's website alone. If STR eligibility matters to your purchase, do not rely on what you read on the county's site -- including the basin numbers on this page, which reflect the last official January 2026 update. Call me before you make any decisions. I know which questions to ask and how to get a real answer. 303-907-9129  or  TZimmerman@SliferSummit.com

Step One: Confirm the Property Is Actually in Unincorporated Summit County

Before any of the basin or overlay zone analysis applies, you need to confirm the property is in unincorporated Summit County rather than inside an incorporated town. If it is inside a town, that town's rules apply instead. A Breckenridge address does not mean Breckenridge rules. A Dillon address does not mean Dillon rules. A Silverthorne address does not mean Silverthorne rules.

Use the Summit County GIS Parcel Query Tool. Enter the address and check the Jurisdiction field. If it says unincorporated Summit County, this page applies. If it names a town, go to that town's STR page instead.

The Two Overlay Zones: Very Different Situations

Summit County divides all unincorporated land into two overlay zones. Which zone a property sits in determines everything about the STR path.

Need help determining which zone and basin a specific property falls in? I verify this on every STR-focused purchase before any offer goes in. 303-907-9129  or  TZimmerman@SliferSummit.com

Type I Exception License: Who Can Get One and How It Works

The Type I license exists because Summit County wanted to incentivize local workforce housing, not just restrict short-term rentals. The idea is simple: if a local worker is living on the property, the county treats the STR activity differently and does not count it against the basin cap. It is available even when basins are full and waitlists are active.

It sounds appealing. In practice, most out-of-area investment buyers cannot satisfy the requirements. Here is exactly what the county requires:

The Qualified Occupant Requirements

The Qualified Occupant (QO) must satisfy ALL of the following simultaneously:

• Summit County mailing address: The QO must have a Summit County mailing address as their primary residence.
• Lives on the property: The QO must reside at the STR property for at least 9 months per year.
• Works in Summit County: The QO must work at least 30 hours per week in Summit County. Pay stubs, W-2s, or other employment documentation required.
• Motor vehicle registration: Required as part of the application documentation.

Who the Qualified Occupant Can Be

This is where it gets more flexible than most buyers realize. The Qualified Occupant does not have to be the property owner. It can be:

• The owner, if they live and work in Summit County full time
• A long-term renter who lives on the property and works in Summit County
• A local workforce retiree who meets the primary residency requirement
• A self-employed individual who works in Summit County 30+ hours per week

Key Operating Restrictions Under a Type I License

• The 35-booking-per-year limit still applies, same as Type II.
• The Qualified Occupant must remain in residence for 9+ months per year for the license to remain valid.
• If the QO stops meeting the requirements, the Type I license is no longer valid and you cannot convert to a Type II in a capped basin.
• Type I licenses are not counted toward basin caps and there is no limit on how many are issued.
• Annual fee: same as Type II at $360/year. Renewed in September.

Bottom line: Type I is a legitimate path for owners who live full time in Summit County, owners willing to house a full-time local worker, or retirees who make the property their primary Summit County residence. For most out-of-state second-home buyers, it is not a realistic option.

Source: Summit County: Short-Term Rental FAQs  |  Summit County: License Applications

Copper Mountain Is Technically Unincorporated Summit County — But a Different Story Entirely

Copper Mountain sits in unincorporated Summit County, which is why it appears in this guide. But it is in the Resort Overlay Zone, not the Neighborhood Overlay Zone. None of the basin caps, Type I versus Type II distinctions, or 35-booking limits apply. Copper Mountain has no cap, no waitlist, no booking limit, and 100% of properties are eligible for a Resort license.

If you are evaluating Copper Mountain specifically, the full licensing picture lives on its own page: Copper Mountain Short-Term Rental Rules.

The Four Neighborhood Overlay Zone Basins

Each basin is named after its primary water drainage. Cap numbers and current license counts are updated by Summit County once per year, in January. The figures below reflect the January 2026 official update.

As documented above, Summit County issues licenses from these waitlists on a rolling basis throughout the year but does not update its public documents to reflect that activity. The numbers below represent the last official snapshot, not the current state. Verify directly with the county before any purchase decision.

Summit County Neighborhood Overlay Zone basin boundaries. Use the Summit County Basin Locator Map to confirm any specific property address.

Not sure which basin applies to a property you are considering? I run the GIS and basin check on every STR-focused purchase before any offer is written -- and I know which questions to ask the county directly. 303-907-9129  or  TZimmerman@SliferSummit.com

The 35-Booking Limit: What It Actually Means

Properties in the Neighborhood Overlay Zone are limited to 35 bookings per year. That is 35 separate reservations, not 35 nights. The distinction matters.

An owner with a 3-night minimum stay and 35 bookings could have up to 105 rental nights. An owner with a 7-night minimum and 35 bookings could have up to 245 nights. Most NOZ owners respond to the booking limit by setting multi-night minimums, focusing on peak ski weeks and summer weekends, and pricing higher to maximize revenue per booking rather than trying to maximize the number of bookings.

This rewards pricing discipline and selectivity. It is not a death sentence for STR income in the NOZ, but it requires a different strategy than a property in Keystone or Copper Mountain where you can book 200 nights a year if demand supports it.

How the Waitlist Works

Summit County opened the Type II STR waitlists for Lower Blue, Upper Blue, and Snake River Basins in July 2025. The Ten Mile Basin waitlist is also active. A few things to know:

• Only property owners can apply. Real estate agents and property managers cannot submit on your behalf. You must own the property and apply yourself.
• $75 non-refundable application fee per basin waitlist application.
• Properties under contract cannot apply. You must have closed on the property before submitting a waitlist application.
• Waitlist position is not transferable. If you sell the property, the buyer starts fresh on the waitlist.
• Movement depends entirely on attrition. Licenses open up when existing holders sell or do not renew at the September renewal window. There is no guaranteed timeline.
• Current queue length is not publicly available. The county's published waitlist documents are updated once per year. For current position counts, call Summit County Community Development directly: 970-668-4186.

Source: Summit County: STR Regulations and Basin Caps  |  Summit County: STR Waitlist

The Mailing Address Trap: Why This Catches So Many Buyers

The mailing address on a listing tells you almost nothing about which STR rules apply. Here is the complete picture:

What This Means for Buyers

If STR income is part of your plan, the honest picture for most unincorporated Summit County neighborhoods outside the Resort Overlay Zone is not good right now. All four NOZ basins are at or over cap. Type II licenses are unavailable through new applications. The waitlist moves at the pace of existing holder attrition, which in some basins is measured in years.

There are a few legitimate paths:

• Resort Overlay Zone properties: Copper Mountain, Tiger Run, SkiWatch, and 4 O'Clock have no cap and no waitlist. These are the only immediately accessible STR paths in unincorporated Summit County.
• Type I license: Available even in capped basins, but requires a full-time Summit County worker living on the property. Most out-of-area investment buyers cannot satisfy this requirement.
• Long-term or medium-term rentals: Any rental of 30 consecutive days or more does not require an STR license in any jurisdiction. This is a legitimate income strategy during a waitlist period. Summer demand from retirees escaping heat and remote workers makes this viable in several NOZ neighborhoods.
• Buy and wait: Join the waitlist after closing and hold long-term. Some buyers accept the waitlist timeline if the property makes sense as a personal-use asset and the long-term investment thesis is sound regardless of near-term STR income.

Is Unincorporated Summit County Still Worth Buying?

Yes, depending entirely on what you are buying and why. For STR income as the primary objective, the Resort Overlay Zone is the only straightforward path in unincorporated Summit County right now. For personal use with long-term appreciation and eventual STR potential, neighborhoods like Wildernest, Mesa Cortina, Peak 7, and Dillon Valley still have real merit -- they just require patience and a plan that does not depend on immediate licensing.

For the full comparison of every Summit County jurisdiction, see my Summit County Short-Term Rental Regulations Guide.

Common Questions

Evaluating an Unincorporated Summit County Property?

The jurisdiction and basin check is the first thing that needs to happen on any unincorporated Summit County property where STR income is part of the plan. I run this on every purchase before any offer goes in -- and I know which questions to actually ask the county to get current answers, because the published documents will not give them to you.

If you are comparing unincorporated Summit County against the incorporated towns -- Frisco, Dillon, Silverthorne, Keystone, Breckenridge -- I can walk through where the real STR opportunities are right now based on what you actually want to accomplish.

Tucker Zimmerman
Associate Broker, Slifer Smith & Frampton
303-907-9129 (call or text)
TZimmerman@SliferSummit.com
SoldInSummit.com

Related Resources

• Summit County: STR Regulations and Basin Caps (Official) -- see contradictions documented above
• Summit County: STR Waitlist Page
• Summit County: STR License Applications and Types
• Summit County GIS Tool: Confirm Jurisdiction and Basin
• Summit County Short-Term Rental Regulations: Full Countywide Guide
• Copper Mountain Short-Term Rental Rules (Resort Overlay Zone -- No Cap)
• Silverthorne Short-Term Rental Rules
• Dillon Short-Term Rental Rules
• Frisco Short-Term Rental Rules
• Breckenridge Short-Term Rental Rules