Garage Conversion Drawings · Beaverton, OR
Permit-Ready Garage Conversion
Drawings for Beaverton, OR
Convert your garage into permitted living space or a rental unit. We deliver complete, code-compliant drawing sets ready for Beaverton's building department — in 10 business days, starting at $997.
14-day money-back guarantee · 10 business day turnaround
Local Intelligence
What Beaverton Homeowners Need to Know Before Submitting
Size & Zoning Rules
Converting your garage to a legal rental unit means the finished space must comply with Beaverton's ADU size limits. Beaverton's current ADU size cap is 800 sq ft — within the typical range for most floor plan configurations.
Beaverton 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 Beaverton can command approximately $1,511/month as a 1-bedroom rental — far more than leaving the space as storage.
Permit Process & Fees
Building Division permit fees for this project type typically range from $2,500 to $9,000 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 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 Division ↗Construction Cost Context
Beaverton's garage conversion construction costs run $200–$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 Beaverton
Washington County's Clean Water Services adds a layer most homeowners don't expect: any ADU project that disturbs more than 500 square feet of ground often triggers a Service Provider Letter review before Beaverton's Building Division will even accept your permit application, and that can tack on 2-4 weeks upfront. Because the area sits in Seismic Design Category D, engineers here typically require site-specific lateral force calculations rather than prescriptive tables — this pushes structural drawings toward custom engineering fees that generic ADU cost guides never factor in. Also, since short-term rentals aren't allowed on ADUs in Beaverton, several lenders in the area will not count projected Airbnb income when qualifying homeowners for construction financing, which catches people off guard when they're planning to offset the build cost.
Expert Verdict — Marcus Reid, Licensed Designer
"In my experience, that 7-week plan check timeline and the $275/sqft cost figure are Beaverton-area estimates, not gospel — I'd get at least two local contractor quotes and call the Building Division directly before penciling in a schedule. Even with a clean submittal, incomplete drawing sets are the norm rather than the exception here, so I'd budget extra weeks beyond that 7-week figure to avoid a frustrating surprise."
Market Context
Beaverton has a median home value of $472,000. Comparable renovation projects in this market typically add 25.0% to resale value.
Neighborhoods in Beaverton with the strongest garage conversion and rental-unit potential include Raleigh Hills, Murray Hill (Murrayhill), Sexton Mountain, West Beaverton, Cedar Hills. Older single-family lots and high home values make rental ADUs attractive.
Permit Process
Permit applications are reviewed by the Building Division, with a plan check timeline of approximately 7 weeks. Permit fees in Beaverton range from $2,500 to $9,000 depending on project scope. Design review: Other - design review applies to ADU new construction or additions where design review/ historic review is required; conversions are excluded.
Beaverton falls within Seismic Design Category Seismic Design Category D (typical for Portland–Beaverton area; site-specific SDC and spectral values must be determined using ASCE/USGS design maps as required by the OSSC), which affects structural requirements for converted garage walls and foundations.
Local Financing Resources
Local Garage Conversion Lenders in Beaverton
These lenders offer HELOC, construction, and renovation loans for garage conversion projects in Washington County. Compare terms before committing.
Offers HELOCs for home improvement/renovation; available to members at Beaverton branches—rates and approval depend on credit and home equity.
Visit Lender ↗Home Equity products with a 10-year draw/20-year repayment HELOC option; minimum loan amounts and local servicing in Washington County.
Visit Lender ↗Oregon CDFI with ADU loan programs (some options fund total project cost including permitting/design and may require no down payment in specific programs).
Visit Lender ↗Specialty ADU financing in Portland/Portland-metro: personal/ADU loans up to about $450,000 and options that may not require home equity.
Visit Lender ↗Specialty renovation fintech that partners with credit unions nationwide and offers Renovation HELOCs that use after-renovation value to increase borrowing power.
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 Beaverton
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 Beaverton Garage Conversion Package
Transparent Pricing
Beaverton 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 Beaverton's building department requirements and OR code. Delivered in 10 business days.
Submit to Your Building Dept
Download your complete package and submit to Building Division. We support plan check corrections at no extra charge.
Common Questions
Beaverton Garage Conversion FAQs
Is a garage conversion allowed in Beaverton? +
Yes — garage conversions are permitted in Beaverton. Oregon 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 Beaverton? +
Garage conversions in Beaverton typically range from $110,000 to $242,000 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 Beaverton? +
Beaverton'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 Beaverton? +
Plan check in Beaverton 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 Beaverton? +
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 Beaverton'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 OR energy code requirements, which we handle in the Title 24 compliance documentation.
How much does it cost to get garage conversion drawings in Beaverton? +
Our permit-ready garage conversion drawing packages for Beaverton start at $997. Local architects typically charge $2,500–$6,000 for the same set. Every package is engineered for OR code compliance and formatted for Beaverton'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 Beaverton? +
A permitted garage conversion in Beaverton adds rentable square footage to a home currently valued around $472,000. 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 Beaverton
Need full ADU design drawings instead?
Next Steps
Ready to Move Forward With Your Beaverton 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 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 Division. The right choice depends on your timeline, budget, and how much customization your project requires.