Overview: Are Short-Term Rentals Allowed in Louisville, Colorado?

No, short-term rentals are explicitly prohibited in Louisville, Colorado. The Louisville Municipal Code clearly states that short-term rental of dwelling units, including Accessory Dwelling Units (ADUs), is not permitted. Properties within Louisville city limits are only allowed to be rented for monthly or longer leasing periods according to the city's definition of "dwelling unit."

How to Start a Short-Term Rental Business in This Market

Unfortunately, starting a traditional short-term rental business in Louisville is not feasible due to the explicit prohibition in city code. However, investors have several alternative options:

Alternative Investment Strategies:

1. Long-term rental properties - Focus on traditional rentals with 30+ day minimum stays
2. ADU development - Build ADUs as long-term rentals (monthly+ stays only)
3. Guest houses - Develop guest houses that comply with city definitions (no cooking facilities)
4. Boulder County opportunities - Consider properties in unincorporated Boulder County where STRs are allowed with proper licensing

Required Documents, Permits, Licenses, and Guidelines

For Louisville Properties (STR Prohibited):

Long-Term Rentals Only:

• Standard rental property permits and licenses
• Building permits for any construction
• Certificate of Occupancy
• Compliance with all zoning requirements

ADU Development (Long-term rental only):

• Building permit for ADU construction
• Certificate of Exception (for existing units built before May 20, 2025)
• Compliance with ADU zoning requirements
• Utility connections and tap fees

For Boulder County Unincorporated Properties (STR Allowed):

Short-Term Rental License:

• Completed application with required documentation
• Property inspection
• $350 initial fee, $250 renewal fee
• Two-year license validity
• Good Neighbor Guidelines compliance

Vacation Rental License:

• Completed application with required documentation
• Property inspection
• $500 initial fee, $300 renewal fee
• Geographic restrictions apply
• Two-year license validity

Specific Regulations for Short-Term Rentals

Louisville City Regulations (Applicable to Louisville):

Short-Term Rental Prohibition:

• All dwelling units prohibited from STR use (less than 30 days)
• Includes primary homes, ADUs, and guest houses
• ADUs permitted but only for long-term rental (monthly+)
• Guest houses allowed with restrictions (no cooking facilities, shared utilities)

ADU Regulations (Long-term rental only):

• Attached ADUs: Maximum 1,000 sq ft (up to 1,200 sq ft with incentives)
• Detached ADUs: Maximum 800 sq ft (up to 1,000 sq ft with incentives)
• Must comply with setbacks, height, and lot coverage requirements
• Parking requirements apply
• Building permits and impact fees required

Certificate of Exception Process (for existing units):

• Available for units built before May 20, 2025
• $200 application fee
• Safety inspection required
• Voluntary process to legalize existing ADUs

Boulder County Regulations (Unincorporated Areas Only):

Short-Term Rental License:

• Primary residence requirement
• Owner/tenant must be present during rentals
• Up to 45 nights/year when owner not present
• Two on-site parking spaces required
• Maximum 8 occupants or septic system capacity, whichever is less

Vacation Rental License:

• Entire home rental (no owner presence)
• Limited to Forestry (F) and Mountain Institutional (MI) zones
• Geographic caps: 194 licenses in Upper St. Vrain, 83 in Bald Mountain
• Prohibited in Plains CCD and subdivisions in Bald Mountain CCD
• Two on-site parking spaces required

Colorado State-Level Regulations:

Recent ADU Legislation (HB24-1152):

• State law requires Louisville to allow ADUs on all single-family lots
• Implementation deadline: June 2025
• Louisville adopted ADU ordinance effective June 23, 2025

Contact Information for Local Authority

Louisville City (STRs Prohibited):

Planning Department:

• Phone: (303) 335-4592
• Email: planning@louisvilleco.gov
• Address: City Hall, 749 Main Street, Louisville, CO 80027
• Hours: Monday-Thursday 8AM-4PM (In-Person), 4PM-5PM (Remote); Friday 8AM-5PM (Remote)

Building Department:

• Phone: (303) 335-4584
• Email: building@louisvilleco.gov

Boulder County Community Planning & Permitting (Unincorporated STRs):

STR Licensing:

• Phone: (303) 441-3930
• Email: strlicensing@bouldercounty.gov

Planning Division:

• Email: planner@bouldercounty.gov
• Phone: (303) 441-3930

Wildfire Partners (Required for West Boulder County):

• Phone: (303) 441-1420
• Email: info@wildfirepartners.org

Address:

• Community Planning & Permitting
• PO Box 471, Boulder, CO 80306
• Courthouse Annex Building, 2045 13th St., Boulder, CO 80302

Public Office Hours:

• 8 a.m. to 3 p.m., Monday, Wednesday, Thursday
• 10 a.m. to 3 p.m., Tuesday
• Virtual Service Hours: 8 a.m. to 4:30 p.m., Monday, Wednesday, Thursday and Friday; 10 a.m. to 4:30 p.m., Tuesday

Links to Source Pages

Louisville Sources:

• ADUs, Rentals, Guest Houses - Louisville Planning
• Louisville Municipal Code Section 17.08.130
• ADU Handout PDF
• Certificate of Exception Checklist
• Ordinance 2025-1892 - ADUs
• Colorado HB24-1152

Boulder County Sources:

• Short-Term Dwelling and Vacation Rental Licensing
• Licensing Ordinance No. 2023-02
• Land Use Code Text Amendments
• Property Eligibility Tool
• Wildfire Partners Program

Additional Resources:

• Boulder County Online Application Portal
• Licensed STR Locations Map
• Boulder County Land Use Code

Investment Recommendations

Given Louisville's prohibition on short-term rentals, serious STR investors should:

1. Consider unincorporated Boulder County properties where STR licensing is available
2. Focus on long-term rental strategies within Louisville city limits
3. Explore ADU development for long-term rental income
4. Research neighboring jurisdictions that may allow STRs
5. Monitor policy changes as Colorado's ADU legislation continues to evolve

The regulatory environment in Louisville clearly prioritizes long-term housing stability over short-term rental income, making traditional STR investments inadvisable in this market.