Executive Overview

Short-term rentals are explicitly allowed in Concrete, WA, but with significant restrictions. The city permits short-term rentals of single-family residences (SFRs) only through the operation of legally established Accessory Dwelling Units (ADUs), with a crucial limitation: ADUs cannot be used as short-term rentals for less than 6 months (180 days) within a calendar year. This effectively prohibits traditional short-term rental operations (under 30 days) of ADUs in Concrete. However, intermediate-term rentals (30-179 days) may be possible depending on your specific zoning and property configuration.

How to Start a Short-Term Rental Business in Concrete, WA

Market Assessment and Legal Framework

Before investing in Concrete, you must understand the unique regulatory environment. Unlike many jurisdictions that allow traditional short-term rentals, Concrete has positioned ADU STR restrictions as part of housing affordability initiatives. This creates a niche market opportunity for medium-term rentals (30-179 days) which fall outside the STR definition but may serve business travelers, traveling nurses, or extended-stay visitors.

Step-by-Step Launch Process

Phase 1: Property Acquisition and Zoning Verification

1. Verify Zoning Eligibility: Confirm your property is in a zone that allows dwelling units (virtually all residential zones qualify)
2. Assess Septic/Sewer Capacity: Ensure connection to public water and sewer is required (ADUs not permitted on wells/septic)
3. Evaluate Building Potential: Confirm your lot can accommodate an ADU meeting size requirements (400-1,000 sq ft)

Phase 2: Legal Structure Setup

1. Establish Business Entity: Washington State requires a business license for any rental operation
2. Obtain Required Insurance: Minimum $1 million liability coverage
3. Register with Washington Department of Revenue: For tax compliance

Phase 3: ADU Development (if property doesn't already have one)

1. Submit Building Permit Application: Complete permit with all required documentation
2. Ensure Separate Utilities: Detached ADUs require independent water meter and sewer connection
3. Meet Design Standards: Match exterior materials, design, and roof pitch of primary residence
4. Install Required Parking: One on-site parking stall (unless exemptions apply)

Phase 4: Operational Setup

1. Marketing Strategy: Focus on 30-179 day stays rather than traditional vacation rentals
2. Guest Screening: Implement comprehensive screening for extended-stay guests
3. Property Management: Establish maintenance protocols for longer-term guests

Required Documents, Permits, and Licenses

Federal and State Requirements

• Washington State Business License: Required for any rental operation
• Washington Department of Revenue Registration: For tax collection and remittance
• EIN (Employer Identification Number): For tax reporting purposes

Municipal Requirements (Concrete)

• ADU Building Permit: For new construction or conversion of existing structures
• Certificate of Occupancy: Required before any rental operation
• Short-Term Rental Permit: If operating less than 180 days annually (note: this creates legal conflict with ADU restrictions)

Documentation Package for ADU Permit

• Completed Building Permit Application
• Site Plan: Showing property boundaries, structures, parking, and access
• Floor Plans: Detailed layouts for both primary residence and ADU
• Construction Plans: Meeting current building codes and design standards
• Utility Connection Plans: Separate connections for detached ADUs
• Septic/Water Documentation: Proof of public water and sewer connections

Required Operational Documentation

• Current Operations and Monitoring Report (O&M) for septic system supporting dwelling unit
• Fire Marshal Inspection Report: Annual compliance verification
• Liability Insurance Certificate: Minimum $1 million coverage
• Emergency Contact Information: For guest safety and local authority access

Specific Regulations by Jurisdiction

City of Concrete - Municipal Level

ADU STR Restrictions (CMC 19.18.040(24))

• Primary Restriction: ADUs shall not be used as short-term rentals for less than 6 months (180 days) within a calendar year
• Zoning Flexibility: Two ADUs permitted on lots in all zoning districts allowing dwelling units
• Size Requirements: Minimum 400 sq ft, maximum 1,000 sq ft
• Utility Mandates: Public water and sewer connection required; no wells or septic permitted
• Parking Standards: One on-site parking stall required per ADU (exemptions for proximity to transit or available street parking)
• Design Compatibility: Must match primary residence exterior materials, design, and roof pitch

Additional ADU Regulations

• Separation Requirements: Minimum 10 feet between detached ADU and primary residence
• Height Limitations: Residential zone attached ADUs max 35 feet; detached max 28 feet
• Owner Occupancy: No requirement for owner to occupy primary residence or ADU
• Density Exemption: ADUs exempt from underlying zone density requirements

Jefferson County - County Level

Unincorporated Jefferson County STR Framework

• Definition: Rentals under 30 consecutive days
• Capacity Limits: Determined by septic capacity (120 GPD per bedroom, 2 people per bedroom)
• Operator Limits: One STR permit per operator in unincorporated Jefferson County
• Zoning Allowances: Rural Residential (1:5, 1:10, 1:20), Rural Village Center, Resource Lands (Agriculture/Forest)
• Operational Standards: Must prevent unreasonable disturbances; provide adequate parking

Application Process (Jefferson County)

• Digital Submission: planning@co.jefferson.wa.us
• Physical Submission: 621 Sheridan St, Port Townsend, WA
• Required Applications: Main Permit Application, Supplemental STR Application, STR Inspection Application
• Supporting Documents: Site plan, floor plan, current septic O&M report

Washington State - State Level

Legal Framework

• Definition: Rentals less than 30 consecutive days
• Business Licensing: State business license mandatory
• Tax Requirements: State business & operation (B&O) tax, sales tax, local lodging taxes
• Insurance Mandates: Minimum $1 million liability coverage
• Safety Requirements: Carbon monoxide alarms, fire safety compliance, emergency contact posting

Consumer Safety Standards

• Emergency Planning: Fire exits and emergency procedures must be posted
• Occupancy Limits: Must be clearly displayed
• Contact Information: Reliable host contact for guest inquiries
• Building Code Compliance: Adherence to current International Building Code

Tax Obligations

• Combined Sales Tax: 7.0-9.6% depending on location
• Local Lodging Taxes: Vary by jurisdiction
• Business Registration: Required through Washington Department of Revenue

Contact Information

City of Concrete

Municipal Offices

• Address: 26921 Railroad Avenue, Concrete, WA 98237
• Phone: (360) 853-8784
• Website: www.concrete-wa.gov

Jefferson County

Department of Community Development

• Address: 621 Sheridan Street, Port Townsend, WA 98368
• Phone: (360) 379-4460
• Email: planning@co.jefferson.wa.us
• Email (Permits): dcd@co.jefferson.wa.us
• Website: www.co.jefferson.wa.us

Planning Division

• Email: planning@co.jefferson.wa.us
• Phone: (360) 379-4460
• Services: Zoning verification, land use questions, customer assistance meetings

State Level Contacts

Washington Department of Revenue

• Phone: (360) 902-7131
• Website: dor.wa.gov

Washington State Business Portal

• Website: business.wa.gov

Source Links

• Concrete Municipal Code - Chapter 19.18: Accessory Dwelling Units
• Jefferson County STR Frequently Asked Questions
• Jefferson County Short-Term Rentals Information
• Jefferson County GIS Portal - Zoning Verification
• Jefferson County Land Use Applications
• Fire Marshal STR Inspection Resources

Investment Reality Check: Concrete's STR regulatory environment presents unique challenges for traditional short-term rental investors. The ADU STR prohibition under 180 days effectively eliminates conventional vacation rental opportunities but creates potential for medium-term housing solutions. Successful investment strategies in this market must focus on properties with existing ADUs or significant development potential, targeting the 30-179 day rental demographic rather than traditional vacation guests.