Home Addition Drawings · Tempe, AZ
Permit-Ready Home Addition
Drawings for Tempe, AZ
Expand your home with a permitted room addition, second story, or family room extension. We deliver complete, code-compliant drawing sets for Tempe's building department — in 10 business days, starting at $1,497.
14-day money-back guarantee · 10 business day turnaround
Local Intelligence
What Tempe Homeowners Need to Know Before Submitting
Size & Zoning Rules
Any new square footage added to your Tempe home counts against the same zoning envelope that governs ADU size, meaning large additions may affect your ability to add a future ADU. Tempe's current ADU size cap is 1,000 sq ft — within the typical range for most floor plan configurations.
Tempe does not impose an owner-occupancy requirement, so you can rent both the main home and any ADU or conversion as investment units.
If the addition creates a second unit or is later converted to a rental, Tempe's ADU market supports approximately $1,660/month for a 2-bedroom unit.
Permit Process & Fees
Community 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.
Addition permit packages submitted to Community Development Department must include a site plan, floor plans, all four elevations, an electrical plan, and energy compliance documentation — plus stamped structural drawings are always required for any load-bearing elements, second-story work, or new foundation.
Visit Community Development Department ↗Construction Cost Context
Tempe's home addition construction costs run $180–$252 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 Tempe
Tempe's Community Development Department will flag your ADU project if your lot sits within a quarter mile of the Rural/Suburban Character Overlay near south Tempe neighborhoods like Circle G Ranches, triggering extra design review for setbacks and roofline matching that generic ADU guides never mention. Since so many Tempe lots were platted decades ago with irrigation easements from old Salt River Project canal systems, you'll also want to pull your SRP easement records early — building over or too close to one can stall your permit for weeks while the department requires a waiver. And because Tempe allows short-term rentals, expect the city to double-check your parking plan against its STR registration rules, since an ADU used as an Airbnb needs its own dedicated space separate from the main house's required spots.
Expert Verdict — Marcus Reid, Licensed Designer
"In my experience with Tempe submittals, that 5-week plan check timeline is optimistic — it's really a state-level estimate, and I've seen straightforward projects stretch to 8-10 weeks once you factor in a first round of corrections, so call the Community Development Department directly for current queue times. As for the $225/sqft build cost, that's also a broad estimate rather than a Tempe-verified number — I'd get at least two local contractor quotes before penciling out your budget, since I've seen actual bids land well above that figure once site work and finishes are factored in. — Charlotte Pemberton, Senior ADU Design Consultant"
Market Context
Tempe has a median home value of $410,000. Comparable renovation projects in this market typically add 22.0% to resale value.
Neighborhoods in Tempe with the strongest home addition and resale value potential include Mitchell Park West, Downtown Tempe, Maple-Ash, Broadmor, Holdeman. High rental demand from ASU students and faculty on large, established lots.
Permit Process
Permit applications are reviewed by the Community Development Department, with a plan check timeline of approximately 5 weeks. Permit fees in Tempe range from $1,800 to $7,000 depending on project scope. Design review: Other - generally No citywide; review required in specific circumstances (historic districts/overlays and certain Use Permit cases such as two‑story ADUs).
Tempe falls within Seismic Design Category C, which affects structural requirements for any new addition tying into the existing structure.
Local Financing Resources
Local Home Addition Lenders in Tempe
These lenders offer HELOC, construction, and renovation loans for home addition projects in Maricopa County. Compare terms before committing.
Competitive HELOC rates in Arizona; suitable for home improvements including ADUs.
Visit Lender ↗HELOC allowing borrowing up to 80% of home value minus outstanding mortgage; usable for renovations.
Visit Lender ↗Offers one-time-close construction loans and residential lot loans (suitable for building/ADU construction projects).
Visit Lender ↗Regional bank offering construction lending solutions and construction financing.
Visit Lender ↗Specialty ADU/renovation lender platform that partners with credit unions nationwide to offer renovation loans for ADUs.
Visit Lender ↗Build With A Plan is not affiliated with these lenders. Always compare rates and consult a mortgage professional.
Local Build Partners
Vetted Home Addition Contractors in Tempe
We draw the plans. These contractors build the addition. 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 Tempe Home Addition Package
Transparent Pricing
Tempe Home Addition Drawing Packages
One-time fee. No retainer. No hourly billing.
- ✓Site plan
- ✓Floor plans (existing + proposed)
- ✓All 4 elevations
- ✓Electrical plan
- ✓Title 24 energy compliance
- ✓PDF + DWG delivery
- ✓10 business day turnaround
- ✓Everything in Starter
- ✓Stamped structural drawings
- ✓Foundation plan
- ✓Roof framing plan
- ✓Window & door schedules
- ✓1 round of revisions
- ✓Everything in Standard
- ✓3D rendering
- ✓Cross-section details
- ✓Material specifications
- ✓HOA submission package
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
After You Order
Your Addition Drawings in 3 Steps
Submit Your Project Details
Share your property address, existing floor plan (if available), and the addition scope. We assign your project coordinator within 4 business hours.
We Draft Your Drawings
Our team designs your complete addition drawing set — engineered for Tempe's building department requirements and AZ CBC code. Delivered in 10 business days.
Submit to Your Building Dept
Download your complete package and submit to Community Development Department. We support plan check corrections at no extra charge.
Common Questions
Tempe Home Addition FAQs
Do I need a permit for a home addition in Tempe? +
Yes — any structural addition to your home in Tempe requires a building permit. This applies to room additions, second-story additions, sunrooms, and attached garages. You'll need permit-ready drawings before the building department will accept your application. Our packages are formatted specifically for Tempe's submittal requirements.
How much does a home addition cost in Tempe? +
Home additions in Tempe typically cost between $175.0–$300.0 per square foot depending on the scope, finishes, and structural complexity. A 600 sq ft addition ranges from $105,000 to $180,000. Second-story additions cost more than ground-floor extensions due to structural requirements. Our drawing packages start at $1,497 — a fraction of local architectural fees.
What drawings are required to permit a home addition in Tempe? +
Tempe's building department requires: a site plan showing the addition's footprint and setbacks, floor plans for all affected levels, all four exterior elevations, an electrical plan, and energy compliance (Title 24 in California). Structural plans stamped by a licensed engineer are required for any load-bearing elements — included in our Premium package.
How long does the permit process take for a home addition in Tempe? +
Plan check in Tempe typically takes 5 weeks for home additions. Additions with structural components may require additional review. Complete, code-compliant drawings significantly reduce correction cycles — each cycle adds 3–6 weeks. Our drawings are engineered to pass on the first submittal.
What setbacks apply to home additions in Tempe? +
Tempe enforces minimum setbacks from property lines for all additions: typically 4–5 ft side setbacks and 5 ft rear setbacks, though these vary by zoning district and lot size. Your addition must stay within the buildable envelope. Our site plan documents existing and proposed setbacks and flags any zoning variances required.
Do I need structural drawings for a home addition in Tempe? +
Yes, for most additions. Any load-bearing walls, new foundations, second-story construction, or roof structure changes require stamped structural drawings from a licensed engineer. California's CBC (California Building Code) and seismic requirements make structural plans mandatory for most addition types. Our Standard and Premium packages include stamped structural drawings.
How much do home addition drawings cost in Tempe? +
Our permit-ready home addition drawing packages for Tempe start at $1,497. Local architects and designers typically charge $3,000–$10,000+ for comparable drawing sets. Every package is engineered for AZ code compliance and formatted for Tempe's building department. Turnaround is 10 business days with a 14-day money-back guarantee.
Will a home addition increase my home's value in Tempe? +
In Tempe, where median home values are approximately $410,000, a permitted home addition adds square footage that appraisers value as part of the home's gross living area. Return on investment varies by addition type — master suite additions, family room expansions, and additional bedrooms typically recoup 50–75% of project cost in appraised value in AZ markets.
Can I add a second story to my home in Tempe? +
Second-story additions are permitted in most Tempe residential zones, subject to height limits and design review requirements. California generally requires ministerial permit approval, but some cities impose design compatibility or neighborhood compatibility review for second stories. Our drawings cover all levels including foundation upgrades, shear walls, and roof framing required for vertical additions.
Also Available in Tempe
Adding an ADU instead? See our ADU design service.
Next Steps
Ready to Move Forward With Your Tempe 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 Community 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 Community Development Department. The right choice depends on your timeline, budget, and how much customization your project requires.