Garage Conversion Drawings · Bothell, WA
Permit-Ready Garage Conversion
Drawings for Bothell, WA
Convert your garage into permitted living space or a rental unit. We deliver complete, code-compliant drawing sets ready for Bothell's building department — in 10 business days, starting at $997.
14-day money-back guarantee · 10 business day turnaround
Local Intelligence
What Bothell Homeowners Need to Know Before Submitting
Size & Zoning Rules
Converting your garage to a legal rental unit means the finished space must comply with Bothell's ADU size limits. Bothell's current ADU size cap is 1,200 sq ft — generous enough to accommodate most project types.
Bothell 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 Bothell can command approximately $1,951/month as a 1-bedroom rental — far more than leaving the space as storage.
Permit Process & Fees
Building and Permit Services Division permit fees for this project type typically range from $26,652 to $31,110 depending on project valuation and scope. Plan check runs approximately 7 weeks — though each correction cycle adds 3–6 weeks, which is why code-compliant drawings matter so much.
Garage conversion drawings submitted to Building and Permit Services Division 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 Building and Permit Services Division ↗Construction Cost Context
Bothell's garage conversion construction costs run $210–$420 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 Bothell
Because Bothell straddles both Snohomish and King County lines, your parcel's exact jurisdiction determines which fee schedule and setback rules apply — and some streets have had properties get bounced between the two departments before landing with the right reviewer. Since the city sits in Seismic Zone D2, expect the structural review to scrutinize your foundation-to-framing connections closely, especially if you're building a detached ADU over an existing sloped backyard, which can add a few weeks if your engineer's calculations don't match Bothell's specific checklist. Also, older neighborhoods like those near Downtown Bothell often have undersized sewer laterals from the 1960s-70s, so budget for a sewer scope inspection early — discovering a clay pipe needs replacing after your permit is already submitted can stall the project for a month or more.
Expert Verdict — Marcus Reid, Licensed Designer
"In my experience working with Bothell homeowners, that 7-week plan check timeline and $300/sqft build cost are state-level estimates, not verified local figures — I'd call the Building and Permit Services Division directly and get a couple of local contractor bids before penciling in a budget or schedule. Even setting cost aside, I've rarely seen a complete-first-try drawing set clear review in under 7 weeks; incomplete submittals are the norm and can easily push that timeline out several more weeks. — Charlotte Pemberton, Senior ADU Design Consultant"
Market Context
Bothell has a median home value of $900,000. Comparable renovation projects in this market typically add 28% to resale value.
Neighborhoods in Bothell with the strongest garage conversion and rental-unit potential include Norway Hill, North Creek, Downtown Bothell, Westhill, Morningside. Close to UW Bothell with large median lot sizes and many single-family homes ideal for detached ADUs.
Permit Process
Permit applications are reviewed by the Building and Permit Services Division, with a plan check timeline of approximately 7 weeks. Permit fees in Bothell range from $26,652 to $31,110 depending on project scope. Design review: Yes - in historic districts only.
Bothell falls within Seismic Design Category D2, which affects structural requirements for converted garage walls and foundations.
Local Financing Resources
Local Garage Conversion Lenders in Bothell
These lenders offer HELOC, construction, and renovation loans for garage conversion projects in King County. Compare terms before committing.
Local Sound CU Bothell branch offers home equity loans/HELOCs for renovations — contact branch for amounts/terms.
Visit Lender ↗Offers HELOCs for home renovation projects; current HELOC rates listed ~6.99%–9.84% APR (as of 2026-05-01).
Visit Lender ↗Salal’s Custom Fit HELOC provides a variable-rate line and up to five lockable fixed-rate segments useful for staged ADU construction.
Visit Lender ↗Local bank headquartered in Bothell offering home loans, HELOCs and construction/home-improvement financing through its mortgage services.
Visit Lender ↗Specialty ADU/renovation financing platform — RenoFi loans commonly cover up to $750k in renovation costs and have an ADU-specific program.
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 Bothell
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 Bothell Garage Conversion Package
Transparent Pricing
Bothell 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 Bothell's building department requirements and WA code. Delivered in 10 business days.
Submit to Your Building Dept
Download your complete package and submit to Building and Permit Services Division. We support plan check corrections at no extra charge.
Common Questions
Bothell Garage Conversion FAQs
Is a garage conversion allowed in Bothell? +
Yes — garage conversions are permitted in Bothell. 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 Bothell? +
Garage conversions in Bothell typically range from $100,000 to $220,000 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 Bothell? +
Bothell'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 Bothell? +
Plan check in Bothell typically takes approximately 7 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 Bothell? +
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 Bothell'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 Bothell? +
Our permit-ready garage conversion drawing packages for Bothell 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 Bothell'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 Bothell? +
A permitted garage conversion in Bothell adds rentable square footage to a home currently valued around $900,000. 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.
Also Available in Bothell
Need full ADU design drawings instead?
Next Steps
Ready to Move Forward With Your Bothell 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 Building and Permit Services Division.
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 Building and Permit Services Division. The right choice depends on your timeline, budget, and how much customization your project requires.