Garage Conversion Drawings · Phoenix, AZ
Permit-Ready Garage Conversion
Drawings for Phoenix, AZ
Convert your garage into permitted living space or a rental unit. We deliver complete, code-compliant drawing sets ready for Phoenix's building department — in 10 business days, starting at $997.
14-day money-back guarantee · 10 business day turnaround
Local Intelligence
What Phoenix Homeowners Need to Know Before Submitting
Size & Zoning Rules
Converting your garage to a legal rental unit means the finished space must comply with Phoenix's ADU size limits. Phoenix's current ADU size cap is 3,000 sq ft — generous enough to accommodate most project types.
Phoenix 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 Phoenix can command approximately $1,239/month as a 1-bedroom rental — far more than leaving the space as storage.
Permit Process & Fees
Planning and Development Department permit fees for this project type typically range from $1,800 to $7,000 depending on project valuation and scope. Plan check runs approximately 5 weeks — though each correction cycle adds 3–6 weeks, which is why code-compliant drawings matter so much.
Garage conversion drawings submitted to Planning and Development Department 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 Planning and Development Department ↗Construction Cost Context
Phoenix's garage conversion construction costs run $200–$300 per square foot — a moderate 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 Phoenix
One thing that catches people off guard: Phoenix requires a separate electrical panel upgrade review if your existing service is under 200 amps, since most ADUs plus existing home loads push past what an old 100-amp panel can handle — and APS scheduling for the utility upgrade can take longer than the actual ADU permit review. Also, if your lot is on a septic system in unincorporated Maricopa County pockets, the Environmental Services division requires a separate septic capacity verification before Planning and Development will even accept your ADU application, which can add several weeks nobody budgets for.
Expert Verdict — Marcus Reid, Licensed Designer
"In my experience, that $250/sqft figure and 5-week plan check are Phoenix state-level estimates, not gospel—I'd get quotes from two or three local contractors and call the Planning and Development Department directly before you bank on those numbers. And even in the best case, 5 weeks assumes a clean, correction-free drawing set; I've seen straightforward projects stretch to 10-12 weeks once you factor in a single round of corrections."
Market Context
Phoenix has a median home value of $349,000. Comparable renovation projects in this market typically add 21.0% to resale value.
Neighborhoods in Phoenix with the strongest garage conversion and rental-unit potential include Encanto-Palmcroft, Arcadia, North Central Phoenix, Sunnyslope, Laveen. Historic large lots near downtown and hospitals with active demand make this area ideal for detached ADUs.
Permit Process
Permit applications are reviewed by the Planning and Development Department, with a plan check timeline of approximately 5 weeks. Permit fees in Phoenix range from $1,800 to $7,000 depending on project scope. Design review: Yes - in historic districts only.
Phoenix falls within Seismic Design Category Seismic Design Category A (very low) per ASCE 7 — general/default for Phoenix/Maricopa County; site-specific SDC must be confirmed using USGS/ASCE 7 hazard tools, which affects structural requirements for converted garage walls and foundations.
Local Financing Resources
Local Garage Conversion Lenders in Phoenix
These lenders offer HELOC, construction, and renovation loans for garage conversion projects in Maricopa County. Compare terms before committing.
Local Arizona credit union offering competitive HELOCs to tap home equity for projects like ADUs; rates and terms vary by member eligibility.
Visit Lender ↗Arizona-based credit union HELOC — borrow up to ~75% of home value (up to $750,000 per site info) with interest-only options during draw period, suitable for ADU funding.
Visit Lender ↗Regional credit union HELOC — page states borrowers can access up to ~80% of home value (less outstanding mortgage), useful for ADU construction cash needs.
Visit Lender ↗Phoenix-headquartered regional bank offering construction lending and CRE construction solutions — can provide construction loan products or refer to local residential construction specialists.
Visit Lender ↗Specialty renovation/ADU financing platform that partners with credit unions and lenders nationwide to offer renovation and ADU financing (RenoFi arranges loans via partners; loans up to ~$750k per prior info).
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 Phoenix
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 Phoenix Garage Conversion Package
Transparent Pricing
Phoenix 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 Phoenix's building department requirements and AZ code. Delivered in 10 business days.
Submit to Your Building Dept
Download your complete package and submit to Planning and Development Department. We support plan check corrections at no extra charge.
Common Questions
Phoenix Garage Conversion FAQs
Is a garage conversion allowed in Phoenix? +
Yes — garage conversions are permitted in Phoenix. Arizona 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 Phoenix? +
Garage conversions in Phoenix 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 Phoenix? +
Phoenix'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 Phoenix? +
Plan check in Phoenix typically takes approximately 5 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 Phoenix? +
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 Phoenix'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 AZ energy code requirements, which we handle in the Title 24 compliance documentation.
How much does it cost to get garage conversion drawings in Phoenix? +
Our permit-ready garage conversion drawing packages for Phoenix start at $997. Local architects typically charge $2,500–$6,000 for the same set. Every package is engineered for AZ code compliance and formatted for Phoenix'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 Phoenix? +
A permitted garage conversion in Phoenix adds rentable square footage to a home currently valued around $349,000. 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 Phoenix
Need full ADU design drawings instead?
Next Steps
Ready to Move Forward With Your Phoenix 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 Planning and Development Department.
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 Planning and Development Department. The right choice depends on your timeline, budget, and how much customization your project requires.