Short-Term Rentals in Castle Rock, CO: What Residents Actually Need to Know
If you live in Castle Rock or are thinking about moving there, short-term rentals are one of those things you probably won't think about until they affect you directly. Castle Rock has 10 specific rules on the books covering different aspects of short-term rentals, and some of them might surprise you.
Registration Rules
Castle Rock has no separate STR registration. Operators register the same way any business does — by obtaining a Town of Castle Rock sales-tax/business license before collecting lodging and sales tax.
Key details: STR registry: None; use sales-tax license. Where to register: Town sales-tax portal. Annual STR renewal: No STR-specific renewal. Administered by: Revenue Division. County property: Douglas County licenses separately.
Collecting rent without a Town sales-tax/business license means unlicensed operation; the Revenue Division can pursue back tax, penalties and interest.
Taxes & Fees
Castle Rock imposes a 6% lodging tax on all sales of lodging, effective January 1, 2022, in addition to the Town's 4.2% sales tax. Short-term rental operators must collect and remit both.
Key details: Lodging tax: 6% of lodging sales. Lodging tax effective: Jan. 1, 2022. Town sales tax: 4.2% (since Jan. 1, 2025). Long-stay exemption: 30+ consecutive days, written lease. Remitted to: Town Revenue Division.
Failure to collect or remit the lodging or sales tax subjects the operator to penalties, interest and collection action by the Revenue Division under the Town's tax code.
Permit Requirements
Castle Rock has no dedicated short-term rental permit. The Town does not regulate Airbnb/VRBO as a land use, but every operator must hold a Town business license and remit lodging and sales tax.
Key details: STR-specific permit: None required. License needed: Town business/sales-tax license. Town regulates STRs?: No, only taxes them. Governing body: Revenue Division. Applies to: Incorporated Town only.
Operating without the required Town business/sales-tax license, or failing to remit lodging and sales tax, exposes the operator to Revenue Division collection, penalties and interest on unpaid tax.
Parking Rules
Castle Rock has no short-term-rental parking requirement. Guest and vehicle parking is governed by the Town's ordinary residential parking, RV and traffic rules, not any STR-specific standard.
Key details: STR parking minimum: None set. Governing rule: Model Traffic Code / zoning. Guest-parking permit: Not required. RV/oversized vehicles: General Town limits apply. HOA rules: Often stricter.
Improper parking is enforced under the general traffic/parking code (ticketing, towing) or nuisance rules — not any STR ordinance; HOAs may also fine.
Noise Rules
Castle Rock has no STR-specific noise rule. Rentals must comply with the Town's general noise and public-nuisance provisions, which apply to every property regardless of short-term-rental use.
Key details: STR quiet-hours rule: None specific. Governing code: General noise/nuisance code. State backstop: CRS 25-12-103 dB limits. Enforced by: Police / Code Compliance. HOA quiet hours: May be stricter.
Noise/nuisance violations are enforced by Police or Code Compliance under the general Municipal Code, with citations and fines; repeat disturbances may escalate.
Occupancy Limits
Castle Rock sets no short-term-rental occupancy limit. Because the Town does not regulate STRs, guest counts are governed only by the general residential zoning, building and life-safety code, not any STR-specific rule.
Key details: STR occupancy cap: None adopted. Governing standard: General zoning/building code. Persons-per-bedroom rule: No STR-specific rule. HOA limits: May be stricter. Basis: Town does not regulate STRs.
There is no STR occupancy penalty; enforcement would arise only under general building/fire-code occupancy or nuisance provisions, or through private HOA covenant enforcement.
Primary-Residence-Only Rule
Castle Rock does not require a short-term rental to be the operator's primary residence. Because the Town does not regulate STRs, whole-home and investment rentals are not restricted by any residency rule.
Key details: Primary-residence rule: None. Whole-home rentals: Allowed by the Town. Owner-occupancy: Not required. Only obligation: License + remit taxes. HOA covenants: May restrict STRs.
No residency-rule violation exists at the Town level; the practical risk is HOA covenant enforcement, which the Town does not administer.
Host Presence Rule
Castle Rock does not require a host or local contact to be present or on-call. With no STR ordinance, unhosted whole-home rentals are permitted, subject only to business licensing and tax remittance.
Key details: Host-presence rule: None. Local 24-hr contact: Not required by Town. Unhosted rentals: Permitted. Remote owners: Allowed. HOA rules: May require a manager.
No host-presence penalty exists at the Town level; any enforcement flows from general nuisance/code-compliance rules or private HOA requirements.
Night Caps
Castle Rock sets no limit on how many nights per year a property may be rented short-term. Because the Town does not regulate STRs, there is no maximum-nights or maximum-bookings restriction.
Key details: Annual night cap: None. Max bookings: Unlimited by Town. Tax-related threshold: 30+ consecutive days exempt. Condition: License + remit taxes. HOA caps: May apply.
No night-cap penalty exists; the only stay-length rule is the 30-day lodging-tax exemption. Tax non-remittance triggers Revenue Division penalties.
Insurance Requirements
Castle Rock does not require short-term-rental operators to carry or prove liability insurance. Because the Town does not regulate STRs, no insurance minimum is filed with or verified by the Town.
Key details: Town insurance mandate: None. Proof filed with Town: Not required. Recommended coverage: Liability policy for rental use. Homeowner policy: May exclude rentals. HOA/lender: May require insurance.
There is no Town insurance-compliance penalty; the risk is uninsured personal liability and possible HOA or lender consequences, not Town enforcement.
The Bottom Line
Castle Rock's short-term rentals rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Castle Rock is broadly strict or permissive.
Keep in mind that Castle Rock can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.