Northwest Home Pros(425) 999-5003
Edmonds, WA · Snohomish County

Garage Conversion Cost in Edmonds, WA

Realistic 2024–2025 pricing for Edmonds garage conversions — from basic bonus rooms to full permitted ADUs. Straight answers from a local licensed contractor.

WA Licensed: NWHPII*800OD Serving Edmonds & Snohomish County Transparent, No-Markup Pricing 5-Star Google Rated

Pricing Guide

Garage Conversion Cost Ranges — Edmonds, WA

These are realistic ranges for Edmonds and Snohomish County projects based on current material and labor costs. Every project is different — these ranges assume mid-grade finishes. Contact us for a precise itemized estimate.

Basic Conversion (Unfinished to Finished Bonus Room)

$18,000 – $35,000

Insulation, drywall, flooring, electrical, HVAC connection. No plumbing.

Home Office Conversion

$22,000 – $45,000

Full finish, dedicated circuits, lighting, data conduit, flooring, mini-split or HVAC extension.

Studio / Flex Space (No Plumbing)

$25,000 – $50,000

All finishes, climate control, custom storage, electrical upgrade, egress window if needed.

In-Law Suite or ADU (With Full Bath, No Kitchen)

$55,000 – $85,000

Full bath, plumbing rough-in, insulation, all finishes, egress window, mini-split, separate entrance.

Full ADU With Kitchen & Bath (1BR/1BA)

$75,000 – $130,000

Kitchen, full bath, bedroom, living area, all finishes, dedicated utilities, permits, and inspections.

Two-Car Garage Full ADU (Larger Unit)

$100,000 – $175,000+

Large ADU — 600–900 sq ft, full kitchen, bath, living area, bedroom, private entrance, all permits.

All estimates include design, permits, materials, and labor. We pass wholesale material discounts directly to you — no markups.

Cost Factors

What Drives the Cost of a Garage Conversion in Edmonds?

Eight factors that most significantly impact your final project cost — and what to expect from each one.

Plumbing

Adding a bathroom or kitchen requires new plumbing rough-in and connection to the main drain — this is the single biggest cost driver.

Electrical Service Upgrade

Older Edmonds homes may need a panel upgrade to support the additional load from a converted garage unit.

Insulation & Envelope

Garages are typically uninsulated. Bringing walls, ceiling, and floor up to residential code adds cost but is required for a permitted conversion.

Egress Windows

Any sleeping room requires a code-compliant egress window — typically $800–$2,500 per opening including the framing modification.

Separate Entrance

Adding a private door or relocating the entrance adds framing, weatherproofing, and exterior finish costs.

HVAC / Climate Control

A ductless mini-split is the most common solution for garage conversions — $3,500–$7,000 installed for most Edmonds garages.

Permits & Inspections

City of Edmonds permit fees for a full ADU conversion typically run $1,500–$4,000. We include this in your estimate.

Finish Level

Luxury finishes (hardwood, tile, quartz countertops) add cost — standard LVP flooring and painted drywall represent the most common mid-range option.

Return on Investment

Is a Garage Conversion Worth It in Edmonds, WA?

In Edmonds, a permitted ADU conversion can add $80,000–$150,000 to your home's appraised value depending on scope and finishes. As a rental unit, a well-built 1BR/1BA ADU in Edmonds typically generates $1,600–$2,200/month in rental income — meaning most conversions pay for themselves within 4–7 years.

Beyond rental income, Edmonds homeowners are converting garages for multi-generational living (housing adult children or aging parents on the same property), home offices with proper separation from the main house, and flex spaces like gyms or studios that add daily quality of life.

The key to a strong return on investment is a properly permitted, code-compliant conversion built with quality materials. Unpermitted conversions — while cheaper upfront — can create significant problems when you sell, refinance, or file an insurance claim. Northwest Home Pros pulls all permits and handles all inspections, so your conversion is fully legal and marketable.

Frequently Asked Questions — Garage Conversion Cost, Edmonds WA

Do I need a permit to convert my garage in Edmonds, WA?
Yes. Any garage conversion that adds habitable living space requires a building permit from the City of Edmonds. This includes ADUs, in-law suites, home offices with electrical and HVAC, and any conversion that modifies the structure. Northwest Home Pros handles all permitting — we submit the application, respond to review comments, and schedule all required inspections.
How long does a garage conversion take in Edmonds?
A basic bonus room conversion (no plumbing) typically takes 4–8 weeks from permit issuance. A full ADU with kitchen and bath runs 8–16 weeks depending on complexity. Permit review by the City of Edmonds typically takes 4–8 weeks. We account for this in your project schedule.
Can I convert my attached garage to an ADU in Edmonds?
Yes, in most cases. Edmonds follows Washington State ADU guidelines that allow attached garage conversions on most residential lots. We'll review your property's zoning, setbacks, and lot coverage to confirm eligibility before any design work begins.
What's the difference between an ADU and a DADU?
An ADU (Accessory Dwelling Unit) is any secondary dwelling unit on a residential property — it can be attached (like a converted garage) or detached. A DADU (Detached ADU) is specifically a free-standing structure. Converted attached garages are typically classified as attached ADUs.
How do I get an accurate estimate for my Edmonds garage conversion?
The most accurate way is an on-site visit where we can assess your garage's current condition, utilities access, plumbing proximity, and structural elements. Call (425) 999-5003 to schedule a free on-site consultation and estimate. We provide fully itemized written estimates with no hidden costs.

More Services & Areas We Serve

Northwest Home Pros — licensed remodeling contractor serving Western Washington.

Edmonds Garage/ADULynnwood Garage/ADUEverett Garage/ADUMukilteo Garage/ADUShoreline Garage/ADUHome AdditionsEdmonds KitchenEdmonds BathroomEdmonds RemodelingKitchen RemodelingBathroom RemodelingLiving Spaces

Ready to Get a Precise Estimate for Your Edmonds Garage Conversion?

Every garage is different. The fastest way to get an accurate number is a free on-site visit — we'll walk through your space, discuss your goals, and provide a fully itemized written estimate with no obligation.

Northwest Home Pros · 5305 136th Pl SW, Edmonds, WA 98026 · WA License: NWHPII*800OD