Concrete, Washington Short Term Rental Regulations Guide for Airbnb hosts

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.

What do Airbnb hosts actually earn in Concrete?

Concrete hosts earn a median $41,622/year with $240 ADR and 64% occupancy.

Top performers pull in $71,215+ per year.

See the full Concrete market breakdown

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

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

Phase 2: Legal Structure Setup

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

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

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

Phase 4: Operational Setup

Marketing Strategy: Focus on 30-179 day stays rather than traditional vacation rentals
Guest Screening: Implement comprehensive screening for extended-stay guests
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

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.

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Ask the AI Advisor about Concrete

Concrete is a small town of approximately 800 residents tucked into the Skagit River valley in Skagit County, Washington, in the rugged foothills of the North Cascades. Founded in the early twentieth century as a company town around a Portland cement plant, it carries a working-class, outdoorsy character shaped by its industrial roots and its position along one of the most scenic corridors in the Pacific Northwest. The town serves as a southern gateway to North Cascades National Park and the surrounding wilderness, and it sits about 90 miles northeast of Seattle, a drive of roughly two hours along Highway 20.

The marquee draw in the area is North Cascades National Park, whose complex of jagged peaks, glacial lakes, and old-growth forests begins just north of town. The park's famous highway corridor, including the Newhalem and Diablo areas with their interpretive trails and the dramatic Gorge Lake and Ross Lake viewpoints, can be reached in roughly 30 to 45 minutes from Concrete. It is a popular base for visitors exploring the North Cascades Highway, with hiking, climbing, and wildlife viewing in every direction.

Just outside of town, the reservoirs created by the Skagit River dams offer a more relaxed outdoor experience. Lake Shannon stretches immediately downstream of Diablo Dam, and the larger Ross Lake stretches northward into the backcountry of the national park, with boat-in camping and quiet fishing. Baker Lake, formed by Upper Baker Dam, sits to the east and is a favorite for kayaking, swimming, and shoreline camping, all within about a 20- to 30-minute drive. Together these three lakes give visitors a mix of frontcountry and wilderness water recreation close to town.

For travelers interested in the area's industrial past, the Concrete Heritage Museum preserves the history of the cement plant and the community that grew up around it, including artifacts from the local labor history that gave the town its distinctive identity. The town also sits along the Cascade Loop, a roughly 450-mile scenic driving route that links the North Cascades with the Puget Sound, the Methow Valley, and the Wenatchee area, making Concrete a natural overnight stop for road-trippers.

For short-term rental investors, Concrete offers an unusual combination: it is small and uncrowded, yet it sits directly on the main route into one of the most visited national park complexes in the country. Visitors looking for a quieter, more affordable alternative to the busier gateway communities further west find Concrete appealing for its trail access, lake recreation, and dramatic mountain scenery, while still being within easy range of Skagit Valley farm country, the San Juan Islands ferries, and the larger amenities of Burlington and Mount Vernon to the west.