Garage Conversion Drawings · Spokane, WA
Permit-Ready Garage Conversion
Drawings for Spokane, WA
Convert your garage into permitted living space or a rental unit. We deliver complete, code-compliant drawing sets ready for Spokane's building department — in 10 business days, starting at $997.
14-day money-back guarantee · 10 business day turnaround
Local Intelligence
What Spokane Homeowners Need to Know Before Submitting
Size & Zoning Rules
Converting your garage to a legal rental unit means the finished space must comply with Spokane's ADU size limits. Spokane's current ADU size cap is 1,000 sq ft — within the typical range for most floor plan configurations.
Spokane does not impose an owner-occupancy requirement, so you can rent both the main home and any ADU or conversion as investment units.
A fully permitted, code-compliant garage conversion in Spokane can command approximately $1,161/month as a 1-bedroom rental — far more than leaving the space as storage.
Permit Process & Fees
Business & Development permit fees for this project type typically range from $3,000 to $11,000 depending on project valuation and scope. Plan check runs approximately 8 weeks — though each correction cycle adds 3–6 weeks, which is why code-compliant drawings matter so much.
Garage conversion drawings submitted to Business & Development must include a site plan, floor plans, all four elevations, an electrical plan, and energy compliance documentation — plus stamped structural plans are typically required for converted garages that are detached or require seismic upgrades.
Visit Business & Development ↗Construction Cost Context
Spokane's garage conversion construction costs run $210–$315 per square foot — a wide range driven by labor markets, local code complexity, and finish level. Our drawings are priced at a fraction of what a full-service architect would charge to produce the same permit set.
⚠ Common Pitfall in Spokane
Spokane's Business & Development office will often flag older lots served by a septic system, and if your property isn't already tied to city sewer, you can get stuck paying for a full sewer connection before they'll even process your ADU permit — that's a separate approval through the county health district that can add weeks on its own. Also, because Spokane sits in a moderate seismic zone, homes built before the 1990s sometimes need an engineer's letter confirming the existing foundation can support an attached ADU, which catches a lot of owners of older South Hill and Logan neighborhood homes off guard. Since STRs are allowed here, plenty of owners plan to rent the ADU short-term, but they skip checking that their specific zoning designation still requires a separate STR business license from the city — a step that's easy to miss until code enforcement sends a letter.
Expert Verdict — Marcus Reid, Licensed Designer
"In my experience reviewing these state-level estimates, the $300/sqft figure and 8-week plan check timeline are broad averages, not Spokane-specific numbers — I've seen actual bids run $250-$400/sqft depending on site access and finishes, so get two or three local contractor quotes before you budget. I'd also call Spokane's Business & Development Services directly to check current plan check queue times, since incomplete drawing sets routinely push that 8-week estimate out another 3-4 weeks in my caseload."
Market Context
Spokane has a median home value of $289,000. Comparable renovation projects in this market typically add 28.0% to resale value.
Neighborhoods in Spokane with the strongest garage conversion and rental-unit potential include West Central, Browne's Addition / Kendall Yards, North Hill, Emerson-Garfield, Logan. Close to downtown, many single-family lots and rising ADU permitting—good for detached ADUs.
Permit Process
Permit applications are reviewed by the Business & Development, with a plan check timeline of approximately 8 weeks. Permit fees in Spokane range from $3,000 to $11,000 depending on project scope. Design review: Yes - in historic districts only.
Spokane falls within Seismic Design Category C, which affects structural requirements for converted garage walls and foundations.
Local Financing Resources
Local Garage Conversion Lenders in Spokane
These lenders offer HELOC, construction, and renovation loans for garage conversion projects in Spokane County. Compare terms before committing.
Offers flexible options and competitive rates with local support for tapping into home equity.
Visit Lender ↗Provides flexible rates and local support to help homeowners use their equity for projects.
Visit Lender ↗Allows homeowners to access cash at lower interest rates than personal loans or credit cards.
Visit Lender ↗Features a streamlined process with one application, one approval, and one closing for construction projects.
Visit Lender ↗An All-in-One Custom Construction Loan that rolls short-term construction and permanent financing into one loan.
Visit Lender ↗Build With A Plan is not affiliated with these lenders. Always compare rates and consult a mortgage professional.
Local Build Partners
Vetted Garage Conversion Contractors in Spokane
We draw the plans. These contractors build the conversion. Independent — no referral fees paid or received.
Build With A Plan provides drawings only. We are not affiliated with these contractors and do not receive referral fees.
Drawing Package Details
What's Included in Your Spokane Garage Conversion Package
Transparent Pricing
Spokane Garage Conversion Drawing Packages
One-time fee. No retainer. No hourly billing.
- ✓Site plan
- ✓Floor plans
- ✓All 4 elevations
- ✓Electrical plan
- ✓Title 24 energy form
- ✓PDF + DWG delivery
- ✓10 business day turnaround
- ✓Everything in Starter
- ✓Structural plans (stamped)
- ✓Cross-section details
- ✓Window & door schedules
- ✓Material specifications
- ✓1 round of revisions
- ✓Everything in Standard
- ✓3D rendering
- ✓HOA submission package
- ✓ADU conversion alt plan
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
After You Order
Your Conversion Drawings in 3 Steps
Submit Your Garage Details
Share your property address, garage dimensions, and intended use (ADU, rental, home office). We confirm your order and assign your project coordinator within 4 business hours.
We Draft Your Drawings
Our team designs your complete conversion drawing set — engineered for Spokane's building department requirements and WA code. Delivered in 10 business days.
Submit to Your Building Dept
Download your complete package and submit to Business & Development. We support plan check corrections at no extra charge.
Common Questions
Spokane Garage Conversion FAQs
Is a garage conversion allowed in Spokane? +
Yes — garage conversions are permitted in Spokane. Washington state law allows homeowners to convert an attached or detached garage into habitable living space or an ADU. A building permit and permit-ready drawings are required before work begins.
How much does a garage conversion cost in Spokane? +
Garage conversions in Spokane typically range from $90,000 to $198,000 depending on the existing structure, finish level, and scope of work. This is significantly less than building a new detached ADU. Our drawing package starts at $997 — a fraction of what a local architect would charge for the same permit-ready set.
What drawings are required to permit a garage conversion in Spokane? +
Spokane's building department requires: a site plan showing the converted garage's location on the lot, floor plans with dimensions and room labels, all four exterior elevations, an electrical plan, and energy compliance documentation (Title 24 in California). Our Starter package covers all of these. If the garage is detached or the structure requires seismic upgrades, stamped structural drawings are also required — included in our Premium package.
How long does the permit process take for a garage conversion in Spokane? +
Plan check in Spokane typically takes approximately 8 weeks. Having complete, code-compliant drawings dramatically reduces correction cycles — which each add 3–6 weeks. Our drawings are designed to pass on the first submittal.
Can I convert my garage into a rental unit in Spokane? +
Yes — a permitted garage conversion can function as a standalone rental unit (ADU or JADU depending on size). In California, converted garages under 500 sq ft qualify as Junior ADUs (JADUs), while larger conversions qualify as full ADUs. Both can be rented long-term. Short-term rental rules vary by city — confirm with Spokane's planning department.
Do I need to replace the garage door opening when converting? +
Yes. The garage door must be replaced with an insulated wall with a standard entry door and at least one egress window (minimum 5.7 sq ft clear opening). This is captured in our elevation drawings and flagged in the electrical plan. The new wall must also meet WA energy code requirements, which we handle in the Title 24 compliance documentation.
How much does it cost to get garage conversion drawings in Spokane? +
Our permit-ready garage conversion drawing packages for Spokane start at $997. Local architects typically charge $2,500–$6,000 for the same set. Every package is engineered for WA code compliance and formatted for Spokane's building department. Turnaround is 10 business days with a 14-day money-back guarantee.
Will converting my garage increase my home's value in Spokane? +
A permitted garage conversion in Spokane adds rentable square footage to a home currently valued around $289,000. Converted spaces typically appraise as habitable square footage, increasing the home's value. As an ADU or JADU, the rental income stream is also capitalized into the appraised value — typically at a 5–6% cap rate.
Nearby Cities
Also Available in Spokane
Need full ADU design drawings instead?
Next Steps
Ready to Move Forward With Your Spokane ADU?
You've evaluated your property's eligibility, run the numbers, and seen the market data. The next step is getting permit-ready architectural drawings to submit to Business & Development.
Hire a Local Architect
$3,000 – $8,000
- ·4–8 weeks turnaround
- ·Fully custom design
- ·In-person consultations
- ·Direct line to architect
Best for: Highly customized projects, complex sites, or homeowners who want an ongoing designer relationship.
Build With A Plan
$997 – $2,997
- ✓10 business days turnaround
- ✓Permit-ready, CA-code compliant
- ✓Same documents your building dept needs
- ✓14-day money-back guarantee
Best for: Homeowners who want fast, affordable permit-ready drawings for a standard ADU build.
Both options produce permit-ready architectural drawings accepted by Business & Development. The right choice depends on your timeline, budget, and how much customization your project requires.