ADU Design Resource · Scottsdale, AZ
The Complete Guide to
Building an ADU in Scottsdale, AZ
Everything Scottsdale homeowners need to plan, permit, and profit from an ADU — including current 2026 zoning rules, real construction costs, neighborhood ROI data, and verified local lenders.
Created by Build With A Plan · Permit-ready drawings (more below)
Quick Answers About Scottsdale, AZ ADUs
Market Context
Scottsdale has a median home value of $753,000. Adding an ADU typically increases that by 20% — approximately $150,600 in added equity. A 1-bedroom ADU in Scottsdale rents for approximately $1,749/month in the Maricopa County rental market , yielding a 4.8% cap rate on the investment. Occupancy averages 91% in this market.
Top Scottsdale neighborhoods for ADU investment include Old Town (Downtown) Scottsdale, McCormick Ranch, Scottsdale Ranch, South Scottsdale, Indian Bend / Indian Bend Village. High rental demand and proximity to restaurants, nightlife and jobs make ADUs attractive for short- and long-term renters. Large single-family lot stock and family-oriented neighborhood provide space and steady rental demand for ADUs.
Permit Process
Permit applications are reviewed by the Planning and Development , with a plan check timeline of approximately 5 weeks. Permit fees in Scottsdale range from $16,333 to $16,803 depending on project scope. Design review: No citywide requirement — ADUs are approved via administrative review, but additional design review is required in certain overlays and historic/hillside districts (e.g., Foothills Overlay, Hillside/ESLO, and historic preservation areas)
Many Scottsdale lots sit inside the Hillside District or a platted subdivision with its own CC&Rs, and the city's Planning and Development staff will actually ask you for HOA design approval documentation before they'll route your ADU plans to plan review — even though the HOA has zero legal authority over the permit itself. Separately, if your property is on a well or septic system (common in older North Scottsdale parcels), Maricopa County Environmental Services requires a separate septic capacity evaluation before the city will issue the ADU permit, which can quietly add 3-4 weeks if your original system was sized only for the main house. Because STRs are allowed, expect your neighbors to show up at any required notice meeting specifically to ask about rental use, which doesn't change your permit but can slow down informal HOA sign-off if that step applies to you.
"In my 11 years pulling permits here, that 5-week timeline and $250/sqft figure read like statewide averages rather than what's actually happening at Scottsdale's counter — I've rarely seen a set clear plan check that fast unless it's a repeat-approved plan with zero corrections. Treat both numbers as a starting point: call Planning and Development for the current queue, and get two or three local contractor bids before you pencil out your budget."
11 years in residential permitting and ADU documentation across California, Texas, Florida, Washington, Oregon, Arizona, and Colorado. This guide was researched and verified against Scottsdale's building department records and current 2026 Arizona's HB 2720 ADU law.
Property Eligibility
Is My Scottsdale, AZ Property Eligible for an ADU?
Scottsdale homeowners are governed by Arizona's HB 2720 and HB 2928 (2025). Here's what applies to your property before you start designing.
Single-Family Home
Permitted on single-family lots in Scottsdale under Arizona's HB 2720 and HB 2928 (2025). Scottsdale requires owner occupancy — the property owner must reside in the primary home or the ADU. Arizona doesn't set a fixed statutory review-day count — confirm the current timeline with the Planning and Development.
Multi-Family Property
Additional ADUs on multi-family and duplex lots may qualify under Arizona's HB 2720 and HB 2928 (2025) — the exact number and type allowed depends on Scottsdale's local rules. Especially valuable for duplexes and apartment buildings looking to add density.
HOA-Governed Properties
Approximately 35% of Scottsdale homes are in an HOA. Unlike California, Arizona law generally preserves HOA covenants that restrict ADUs — your HOA can still enforce a ban or design conditions through its CC&Rs. Our drawings include HOA submission formatting.
Historic Districts
No citywide requirement — ADUs are approved via administrative review, but additional design review is required in certain overlays and historic/hillside districts (e.g., Foothills Overlay, Hillside/ESLO, and historic preservation areas)
Always verify eligibility with Planning and Development before designing.
Free — No Obligation
Will Scottsdale Approve an ADU on Your Lot?
Send us the address and we’ll check it against Scottsdale’s current zoning, setbacks, and lot-coverage rules — then tell you honestly whether to proceed. Free, and no payment is taken unless your property qualifies.
- ✓Lot qualification against current Scottsdale code
- ✓Your buildable envelope — setbacks and maximum footprint
- ✓Realistic rental income and payback estimate
- ✓Financing pathways you’d likely qualify for
- ✓A straight GO / NO-GO answer within 48 hours
Check My Property — Free
Takes 60 seconds. We'll deliver your personalized report within 48 hours.
Request Received
Your feasibility report is being prepared. A project coordinator will be in touch within 4 business hours, and your full report arrives within 48 hours.
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Scottsdale ADU Return Calculator — Built With 2026 Local Data
Pre-loaded with verified Scottsdale construction costs, median rental rates, and property value uplift data. Adjust the inputs to model your specific project.
Your Project
Projected Returns
* Estimates only. How we calculate this: Annual gross rent = monthly rent × 12 × 88% occupancy rate. Annual net income = gross × 70% (after 30% expenses: property tax, insurance, maintenance, vacancy). Value added = median home value × 20% uplift (regional ADU comparables). Total return = net income × years + value added. Break-even = total build cost ÷ annual net income. Consult a licensed financial advisor before investing.
Data sources: Planning and Development (source ↗), Zillow Rental Market Reports, and public state/local housing data. Last verified: 2026-07-12.
Local Market Data
Top Scottsdale Neighborhoods for ADU Investment
Old Town (Downtown) Scottsdale
High rental demand and proximity to restaurants, nightlife and jobs make ADUs attractive for short- and long-term renters.
McCormick Ranch
Large single-family lot stock and family-oriented neighborhood provide space and steady rental demand for ADUs.
Scottsdale Ranch
High single-family density with family housing and sizeable lots near employment corridors increases ADU feasibility.
South Scottsdale
Relatively more affordable pockets and proximity to central Scottsdale boost renter demand and ADU return potential.
Indian Bend / Indian Bend Village
Close to Old Town and central amenities, offering strong rental demand and walkable access to jobs and services.
Grayhawk (North Scottsdale)
Master-planned single-family neighborhoods with larger lots in North Scottsdale make detached ADUs possible and desirable.
North Scottsdale (aggregate)
Large lots, low-density single-family development and strong demand from long-term renters/seasonal residents.
Gainey Ranch
High home values and proximity to Scottsdale Fashion Square/Old Town create rental upside but watch HOA restrictions.
DC Ranch
Very large lots and affluent buyers mean space for ADUs but strong HOA/architectural controls can limit approvals.
Desert Mountain (far North Scottsdale)
Very large lots and high prices offer ADU space, but remote location and strict CC&Rs/HOAs reduce market rental flexibility.
Scottsdale ADU Market at a Glance
Local Zoning Rules
2026 Scottsdale ADU Rules
Scottsdale's 2026 ADU ordinance caps new units at 1,000 sq ft — in the typical range most ADU floor plans are designed around. Setbacks run 5 ft side and 5 ft rear, close to the regional baseline. Scottsdale doesn't trigger the extra engineer-stamp requirement we see in higher seismic-risk or hurricane-code cities — a standard code-compliant ADU under the size cap can typically be designed and submitted without an architect or engineer stamp, though any load-bearing change to the existing house still needs one.
Permit fees run $16,333–$16,803 — among the higher permit costs we track, and plan check takes about 5 weeks at Planning and Development. Submit directly to the department online — link below.
| Regulation | Scottsdale Allowance |
|---|---|
| Max ADU Size | 1,000 sq ft |
| Max Height | 16 ft (detached) |
| Side Setback | 5 ft |
| Rear Setback | 5 ft |
| Architect / Engineer Stamp | Not required under the size cap* |
| Owner Occupancy | Required |
| Short-Term Rental | Permitted |
| Coastal Overlay | No |
| Design Review | No citywide requirement — ADUs are approved via administrative review, but additional design review is required in certain overlays and historic/hillside districts (e.g., Foothills Overlay, Hillside/ESLO, and historic preservation areas) |
| HOA Prevalence | 35% of properties |
| Permit Fees | $16,333–$16,803 |
*Load-bearing modifications to the existing house always need an engineer stamp regardless of ADU size. Data verified 2026-07-12T23:00:00.000Z. Always confirm with the Planning and Development before designing.
Scottsdale Permit Process
Scottsdale ADU Permit Timeline & Fees
ℹ Timeline and fee estimates are based on Arizona state averages. Actual Scottsdale data coming soon.
Local Financing Resources
Local ADU Lenders in Scottsdale
These lenders offer HELOC, construction, and renovation loans for ADU projects in Maricopa County. Compare terms before committing.
Minimum application $10,000; CLTV up to 80%; suitable for renovations including ADU work.
Visit Lender ↗Offers home equity loans/HELOCs up to ~$726,000 CLTV; promotional flat $399 closing fee on fixed home equity loans.
Visit Lender ↗Offers both HELOC and fixed-rate home equity loans for home improvements; online HELOC/loan applications available in Arizona.
Visit Lender ↗Short-term interest-only construction draw loans requiring a general contractor; supports construction-to-permanent or one-time-close options.
Visit Lender ↗Specialty renovation/ADU financing platform that partners with credit unions — offers renovation HELOCs/HELOANs and fixed-rate options (loans commonly $10k–$750k via partners).
Visit Lender ↗Build With A Plan is not affiliated with these lenders. Always compare rates and consult a mortgage professional.
Local Build Partners
Vetted ADU Contractors in Scottsdale
We draw the plans. These contractors build them. 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.
Next Steps
Ready to Move Forward With Your Scottsdale 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.
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
Quoted on your free call
- ✓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. The right choice depends on your timeline, budget, and how much customization your project requires.
Drawing Package Details
What's Included in Your Scottsdale ADU Package
Engineered for AZ Permit Approvals
What You Get
Scottsdale ADU Drawings — What's Included
How our permit-ready drawing sets compare to hiring a local architect in Scottsdale:
| Service Type | Typical Cost | Turnaround | Customization |
|---|---|---|---|
| Local Architect | $3,000 – $8,000 | 4–8 weeks | Fully custom |
| Build With A Plan · Starter | Quoted on your free call | 10 days | Standard |
| Build With A Plan · Standard | Quoted on your free call | 10 days | Standard |
| Build With A Plan · Premium | Quoted on your free call | 5 days | Enhanced |
- ✓Site plan
- ✓Floor plans
- ✓All 4 elevations
- ✓Electrical plan
- ✓AZ energy code 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
- ✓Garage conversion alt plan
- ✓HOA submission package
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
The Done-For-You Path
Want Your Scottsdale ADU Fully Done For You?
Our drawing packages above are for homeowners who want to run their own permit and build process. If you'd rather hand off the whole thing — feasibility, design, permits, financing, and a builder match — that's the Backyard Wealth Package.
We turn your backyard into a rental unit. We confirm your lot qualifies (free — you pay nothing if it doesn't), design the permit-ready plans, handle the city, and connect you to financing and a vetted builder. One flat fee — about what an architect charges just to start. Yours would rent around $1,749/mo.
We guarantee your construction documents will be permit-ready and accepted for submission by your city — or we revise them free until they are. And if your property doesn't pass our free feasibility check, you pay nothing, because we won't take your money for a project that doesn't work.
We won't even take your money unless your property qualifies.
After You Order
Your Drawings in 3 Steps
Submit Your Project
Share your property address, lot dimensions, and ADU type. We'll confirm your order and assign your project coordinator.
We Draft Your Drawings
Our team designs your permit-ready drawing set — engineered for Scottsdale's building department requirements and AZ code. Delivered in 10 business days.
Submit to Your City
Download your complete drawing package and submit directly to Planning and Development. We support corrections at no extra charge.
Real Projects · Verified Outcomes
ADU Projects Completed with Build With A Plan
Three representative project scenarios based on actual drawing packages delivered in Arizona cities with similar market conditions to Scottsdale.
Build costs reflect local construction data for Scottsdale. Client names are initials only. Permit timelines are project-specific and may vary.
"We'd been quoted $6,200 by a local firm for the same permit-ready set. Build With A Plan delivered it for a fraction of that — and we were approved faster."
"Conversion permit came back approved on the first review. The drawings handled every detail — egress, HVAC, electrical. Nothing was missing."
"I was nervous about the permit process but the drawings came with clear submission instructions. Approved without a single correction cycle."
Representative scenarios. Build costs modeled using Scottsdale construction data (city-verified data) and Planning and Development. Outcomes vary by project scope and site conditions.
Building Code
Scottsdale Climate Zone & Energy Code
Arizona Energy Code (2021 IECC with local amendments); Scottsdale requires new construction to meet standards for roof solar reflectance, EV charging infrastructure, and solar-ready provisions.
Compare Cities
Scottsdale vs. Nearby Arizona Cities
Frequently Asked
Scottsdale ADU Questions
How much does it cost to build an ADU in Scottsdale? +
What is the maximum ADU size allowed in Scottsdale? +
How long does the ADU permit process take in Scottsdale? +
Do I need owner-occupancy to build an ADU in Scottsdale? +
What's the rental income potential for an ADU in Scottsdale? +
How much does it cost to get ADU drawings in Scottsdale? +
What drawings are required for an ADU permit in Scottsdale? +
Can I convert my garage to an ADU in Scottsdale? +
What neighborhoods in Scottsdale are best for ADU investment? +
Is Scottsdale ADU-friendly? +
How much will an ADU increase my property value in Scottsdale? +
Can I use my Scottsdale ADU as a short-term rental (Airbnb / VRBO)? +
Scottsdale has a high HOA rate (35%) — do I need HOA approval for an ADU? +
Does Scottsdale's seismic zone affect ADU construction requirements? +
Where do I submit ADU plans in Scottsdale? +
More Services in Scottsdale
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