Short-term rental rules · Boulder, Colorado
Short-term rentals in Boulder, explained properly.
Boulder allows short-term rentals only in the licensee's own principal residence, and only with a City short-term rental license. The license goes to a natural person on the deed, a trust, or a 501(c) not-for-profit, never an LLC or other for-profit company, and one license per applicant. Properties with an accessory dwelling unit are excluded unless both units were legally established by February 1, 2019 and a license already exists. License fees are listed on the City's pages without a date, so confirm the current amounts with the City. The City short-term rental tax is 7.5%; Colorado's state sales tax is extra.
At a glance
What you need to know before you buy or list
| Question | Answer |
|---|---|
| Are short-term rentals allowed? | Only with a City of Boulder short-term rental license, and only in the licensee's principal residence; most properties with an accessory dwelling unit are excluded[1][2]ClauseClauseClauseClauseClauseConfirming |
| Is a City short-term rental license required? | Yes: a short-term rental license from the City, with its number shown in every advertisement[1][3]ClauseClauseClauseClauseClause |
| Must the owner live on the property? | Yes: the rental must be the licensee's principal residence (festival lodging licenses are exempt from this rule)[1][3]ClauseClauseClauseClauseClause |
| Can an accessory dwelling unit be used as a short-term rental? | Only if the ADU and the main home were both legally established by February 1, 2019 and a current license already exists; ADU rentals are capped at 120 days a year; new license applications for these properties are not accepted[1][2][3]ClauseClauseClauseClauseClauseClauseClause |
| What does a short-term rental license cost? | The City's pages list a $190 license fee, plus a one-time $25 business license fee on a new application ($215 in total); the pages carry no date or fee schedule, so the amounts need confirming[4][3][1]ClauseClauseClauseClauseClauseConfirming |
| City short-term rental tax | 7.5% City excise tax on the price paid for short-term rental lodging services (Chapter 3-15); the same 7.5% applies to hotels and other public accommodations (Chapter 3-3)[5][6][7]ClauseClauseClauseClause |
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Detailed rules
The full picture, section by section
Eligibility & ownership
| Can a company or LLC hold a short-term rental license? | No: only a natural person on the deed, a trust whose beneficiary is a natural person, or a 501(c) not-for-profit corporation (at the city manager's discretion)[1][4]ClauseClauseClauseClauseClause Section 10-3-19(b) limits who can be licensed. A not-for-profit corporation can be rejected if the city manager finds its application inconsistent with the chapter's goals, which include letting not-for-profits support their mission through short-term rentals, preserving long-term rental units and preventing investor-owned short-term rentals. Subsection (f) bars a license for a property in which any entity that is not tax exempt holds a fee simple interest. The city's application page says ownership may not be in an LLC, corporation or limited partnership to qualify. |
|---|---|
| Must the licensee own the property? | Yes: a natural person must be on the deed and hold at least 50% fee simple interest; a trust must hold at least 50%[1][3]ClauseClauseClause Section 10-3-19(d) requires a natural person applicant's name to appear on the deed with at least a fifty percent fee simple ownership interest, and subsection (e) requires a trust to hold at least fifty percent. The city page says a renter cannot run a short-term rental: a tenant whose landlord approves is still using the property illegally within city limits, because short-term rentals are only allowed in owner-occupied properties. The festival lodging license is not subject to these ownership paragraphs; it needs a sworn statement of ownership, or for a tenant licensee an attestation from the owner or the owner's agent that festival lodging is permitted in the unit. |
| Is an owner limited to one short-term rental license? | Yes: the city manager may not issue more than one short-term rental license to any applicant (festival lodging licenses are exempt)[1]ClauseClause Section 10-3-19(m) says the city manager shall not issue more than one short-term rental license to any applicant. Subsection (q)(3) says a festival lodging rental license is not subject to paragraph (m). |
| Can one unit hold both a short-term and a standard rental license? | No: a unit licensed as a short-term rental cannot also be licensed or rented as an ordinary rental, and the reverse (festival lodging licenses are exempt)[1][3]ClauseClause Section 10-3-19(n) says the city manager shall not issue a short-term rental license for a dwelling, dwelling unit, rooming unit, room or portion of one that is otherwise licensed as a rental under the chapter or is subject to an affidavit of exemption filed under Section 10-3-2(b), and that once a unit is licensed as a short-term rental no other type of rental license may be issued for it. The city page says owners may switch between the two types, only one type of license may be issued at a time, an existing standard license is cancelled when a short-term application is made, and a new fee is due. |
| Is a festival lodging rental license available? | Yes: a festival lodging license covers rental during an approved special festival event plus ten days before and nine days after, for no more than 29 days a year[1]ClauseClauseClause Section 10-3-19(q) allows a festival lodging rental license, a form of short-term rental license, for an eligible property on the same requirements as the regular license except as stated. It is exempt from paragraphs (b), (d), (e), (f), (g), (j), (m), (n), (o) and (p), so the principal-residence, deed ownership and annual affidavit paragraphs do not apply to it. It still must show the license number in advertisements, and advertising and occupancy are limited to the dates of an event for which the city has issued a Special Festival Event License or otherwise approved a special festival event within city limits, plus ten days before the license commencement date and nine days after the conclusion date. It cannot be used more than twenty-nine days a year. A license expires four years after issue, or one year for a tenant licensee on a unit that holds another rental license. The licensee pays the fee described in Section 4-20-18. |
Operating rules
| Which stays count as short-term rentals? | Rentals of 29 days or fewer at a time (per the City's license page)[3]ClauseClauseConfirming The city's license page says short-term rentals may be rented for 29 days or fewer at a time and defines them as properties rented for 29 days or less at a time. We did not read the code definition of a short-term rental (Section 9-16-1 and Chapter 10-1). A principal residence rented in its entirety can be rented any number of days a year; an accessory unit may be rented up to 120 days a year (29 days or less at a time). |
|---|---|
| What is the occupancy limit? | Set by the Property Maintenance Code (Chapter 10-2); an ADU and its main home must meet Section 9-8-5(b)[1][3]ClauseClauseClause Section 10-3-19(i) says occupancy of a short-term rental shall not exceed the occupancy permitted under Chapter 10-2, Property Maintenance Code. Subsection (k) says no person shall rent a dwelling unit in a way that requires or encourages a person to sleep in an area that is not habitable under the International Property Maintenance Code. The city's page says every advertisement must show the maximum allowed unrelated occupancy. We did not read Chapter 10-2, so the actual number is not stated here. |
| Must advertisements show the license number? | Yes: no advertisement without the valid short-term rental license number; the City's page also asks for the maximum allowed unrelated occupancy[1][3]ClauseClause Section 10-3-19(l) says no person shall advertise a short-term rental unless the advertisement includes the valid short-term rental license number once assigned by the city manager. The occupancy statement comes from the city's license page, not from this subsection. |
| Must the home have working smoke and carbon monoxide detectors? | Yes: the owner self-certifies working smoke and carbon monoxide detectors, and names two contacts who can respond within 60 minutes[1][3]ClauseClauseClauseClause Section 10-3-19(c) requires the application to certify that the dwelling unit has operational smoke detectors, carbon monoxide detectors and other life safety equipment the city manager may require, and to give the names and telephone numbers of two contacts who, for owner-operated rentals, can be permanent residents on the property and who can respond to the property within sixty minutes. Under subsection (h), short-term rentals are not subject to the inspection requirements of Section 10-3-3(b), except for a detached ADU, whose application needs an inspection report under subsection (o). The city's page says the owner self-certifies the safety equipment. |
| Is an annual principal-residence affidavit required? | Yes: each year within 30 days of the license anniversary, a new sworn statement and the fee under Section 4-20-18[1][3]ClauseClauseClause Section 10-3-19(p) requires a licensee who gave a sworn residence statement with the original application to submit a new one each year within thirty days of the anniversary of the license's issue and pay the fee in Section 4-20-18. The city page says the annual affidavit and fee are due by the anniversary date, that failing to complete it results in revocation, and that it is not required in the license's renewal year. The license page lists the fee as $20; see the license fee rule for the date caveat. |
Taxes
| How is the city tax filed? | Returns are filed through the Boulder Online Tax System; the City says the accommodations tax is filed quarterly[3][7][5]ClauseClauseClauseClause The license page sends owners to the Boulder Online Tax System for filing short-term rental accommodations tax and to [email protected] with questions, and says all returns are filed on forms generated through that system. The city's tax page says the City of Boulder is home ruled and self-collected, so city taxes are remitted directly to the City, and that State of Colorado, Boulder County and RTD taxes go to the Colorado Department of Revenue. The filing and licensing provisions that used to be in Chapters 3-3 and 3-15 were repealed in 2018 (Ordinance 8237, adopted February 6, 2018, effective March 8, 2018) and are not in the chapters we read. |
|---|
State law that also applies
| State sales tax on short stays | 2.9%, plus any local sales taxes the state collects[8][9]ClauseClause Colorado charges its 2.9% state sales tax on the entire amount charged for rooms and accommodations. A stay may also owe local sales taxes that the Colorado Department of Revenue collects for counties and special districts, and any sales tax of a home-rule city that collects its own tax (see below). |
|---|---|
| Which stays are taxed? | Stays of less than 30 days[9]Clause State sales tax does not apply to a room or accommodations rented to a person who is a permanent resident of it and has a written agreement to occupy it for at least 30 consecutive days. Shorter stays are taxed. |
| Colorado sales tax license required? | Yes, unless you rent only through a booking platform that collects the state-collected taxes for you[9][8]ClauseClauseClauseClause The Colorado Department of Revenue says anyone who offers rooms or accommodations for rent must get a Colorado sales tax license and collect sales tax on taxable rentals. A seller who makes sales only through a marketplace may be exempt from licensing, collection and filing if the marketplace collects all state and state-administered local sales taxes for them. The license costs $16 (prorated) plus a $50 deposit, a separate license is needed for each business location, and licenses expire on December 31 of odd-numbered years. |
| Do booking platforms collect state taxes? | Yes, for state-collected taxes[9]Clause For rooms rented through a marketplace (including online platforms), the marketplace facilitator must collect and remit the state sales tax and the local sales taxes the state collects, plus any county lodging tax and local marketing district tax. City taxes in home-rule cities are separate (see below). |
| City lodging and home-rule city taxes | Paid to the city, not the state[9]ClauseClause The Colorado Department of Revenue does not administer any lodging tax imposed by a city or town, and it does not collect sales tax for home-rule cities that collect their own. Those taxes are licensed, filed and paid with the city. |
Changes
Recent and pending changes
We read Boulder Revised Code Sections 10-3-19 (short-term rentals), Chapter 3-15 (short-term rental tax), Chapter 3-3 (public accommodations tax) and Section 9-6-3 of the Land Use Code, plus the City's short-term rental license page, application page and tax rates page, as published on October 14, 2026. The licensing section's history lists Ordinance Nos. 8050 (2015) through 8743 (2026). We did not search City Council agendas or minutes (OneMeeting) for pending changes, so we will watch the code and the license page for changes.
Sources
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This page is general information compiled from public sources, not legal or tax advice. HOA rules, deed restrictions and zoning for a specific property can be stricter. Confirm with the local permitting office and a qualified professional before buying or listing a property.