ADU Construction & Permits
Licensed ADU contractor · Snohomish County and North King County
ADU construction across Snohomish County and North King County — one licensed team from application prep through inspection milestones so you are not navigating city and county process alone.
Licensed. Bonded. Insured.
Your home is in safe hands.
Washington State L&I verified for your protection.
7 Years Experience
Serving Snohomish and North King County since 2019.
Backyard units
Backyard cottages with permits handling
Artbrick LLC builds accessory dwelling units across Snohomish County and permit-ready jurisdictions. Each adu construction project starts with lot review and a written scope before work begins.
Whether you need a detached backyard cottage, an in-law unit, or rental ADU, we walk through setbacks, utility tie-ins, and design review requirements honestly — without guaranteeing approval timelines or rental income.
Need a kitchen, bath, or finish work on the primary residence? See Remodel & Construction. Want a mural or fresco feature inside your ADU? See Art & Murals.
Application prep, plan submission, and inspectable milestones — agreed before ground breaks on your lot.
ADU foundation pour — Snohomish County
ADU Services
What We Build
Homeowners planning adu construction — detached and attached accessory dwelling units under one licensed team, scoped clearly for your lot.
Detached & attached units
Detached and attached accessory dwelling units as scope allows.
From feasibility through construction. Application prep, utility coordination, and interior finish work documented in your written proposal.
How owners use an ADU
Family, rental, and guest use
The building type is an accessory dwelling unit. How you use it — family, long-term rental, or short-term guest stays — is a separate decision from construction, and it depends on your jurisdiction.
Family and in-law
A backyard cottage or attached unit for parents, adult children, or a caregiver. Privacy, a separate entry, and acoustic separation usually matter more than rental staging.
Long-term rental
A second dwelling leased by the month. Durable finishes, storage, laundry, and a clear entry path from parking are the usual construction choices. Landlord licensing is the owner’s responsibility.
Short-term and guest stays
Some owners plan Airbnb-style listings. That is a use, not a separate Artbrick service. Short-term rental rules, owner-occupancy requirements, and listing licenses vary by city and are separate from the building permit.
Artbrick builds the unit and handles permits for construction — we do not license the listing, manage the property, or promise rental income. Feasibility for your lot is the first step; see the ADU feasibility guide.
Recent Work
Recent ADU Work
Accessory dwelling unit projects across Snohomish County and North King County.
Foundation Excavation
Trench & RebarSite Prep
Layout
Formwork
DrainageConcrete Pour
Poured FoundationOur Approach
How an ADU Project Runs
Three clear phases from feasibility to handoff — with scope and inspection milestones agreed before construction begins.
Feasibility & Permits
We review your lot, setbacks, utility access, and jurisdiction requirements. Application prep and plan submission run here — not guaranteed approval.
Construction
Foundation, framing, MEP rough-in, and exterior shell run with inspectable milestones. Interior finish work follows the same quality standards as primary-home kitchen and bath projects.
Finish & Handoff
Interior doors, trim, fixtures, paint, and punch-list walkthrough. The ADU is ready for occupancy at handoff.
Where We Work
Service Area
Based in Granite Falls and serving homeowners across Snohomish County and North King County in permit-ready jurisdictions.
Snohomish County
Everett · Lynnwood · Edmonds · Mill Creek · Granite Falls · Lake Stevens · Marysville · Bothell
North King County
Seattle (north) · Shoreline · Kirkland · Redmond · Woodinville · Kenmore · Bothell
ADU city pages
Granite Falls · Everett · Marysville · Lake Stevens · Arlington
ADU feasibility depends on your lot and local codes. Contact us with your address and we will confirm whether your project is a fit.
ADU Questions
Frequently Asked Questions
Overview questions about our ADU wing, service area, permits approach, and how to get started.
What ADU services does Artbrick offer?
Our ADU wing covers detached backyard cottages, attached units, and conversions where jurisdiction rules allow. Scope includes feasibility, foundation, shell, and interior finish — documented in your written proposal.
Which cities and counties do you build ADUs in?
We serve homeowners across Snohomish County and North King County. Dedicated ADU pages are live for Granite Falls, Everett, Marysville, Lake Stevens, Arlington. Other lots — including Seattle, Mill Creek, Lynnwood, Edmonds, Shoreline, and Kirkland — are reviewed by address. We confirm feasibility before design work begins.
How do I know if my lot qualifies for an ADU?
Lot size, setbacks, utility access, and existing structures all affect whether an ADU is feasible. We review your parcel map and local ordinance in an initial feasibility conversation — we do not quote buildability from an address alone.
Can you build an ADU for Airbnb or short-term rental?
We can build an ADU that you may later use as a guest unit where your city allows it. Short-term rental limits, owner-occupancy rules, and listing licenses are separate from the building permit. We scope construction and permit coordination — not rental income, listing setup, or property management.
Does Artbrick handle permits or do I hire separately?
Permits handling is part of our ADU scope — application preparation, plan submission, and coordination with reviewers. You are not left to navigate city or county process alone, though we do not guarantee approval timelines.
Can you coordinate kitchen and bath finish inside the ADU?
Yes. Interior finish — drywall, flooring, trim, kitchen, and bath — follows the same quality standards as our remodel wing. Finish level is documented in your written proposal.
How do accessory units relate to primary-home projects?
New backyard units are a separate wing from work on your primary residence. If you also need kitchen, bath, or whole-home updates, we can discuss both scopes in one conversation — each documented in its own written proposal.
How do I start an ADU conversation with Artbrick?
Use our contact form or call (425) 422-5947. Share your address, ADU goals, and rough timeline — we will follow up to discuss feasibility before ground breaks.
Is Artbrick licensed for ADU construction in Washington?
Yes. Artbrick LLC is a licensed, bonded, and insured Washington State contractor — L&I verified. License ARTBRL*812B8.
Get Started
Tell us about your ADU project
Share your address, ADU goals, and rough timeline. We will follow up to discuss feasibility and permits.