ADU Design Resource · Eloy, AZ
The Complete Guide to
Building an ADU in Eloy, AZ
Everything Eloy 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 Eloy, AZ ADUs
Market Context
Eloy has a median home value of $230,000. Adding an ADU typically increases that by 21% — approximately $48,300 in added equity. A 1-bedroom ADU in Eloy rents for approximately $814/month in the Pinal County rental market , yielding a 7.1% cap rate on the investment. Occupancy averages 92% in this market.
Top Eloy neighborhoods for ADU investment include Robson Ranch Arizona, Toltec Arizona Valley, Eloy Rural / Acreage Parcels, Verde Valley Ranch, Eloy Industrial Corridor (Residential Edge). Large 55+ active-adult master-planned community of single-family homes where many owners want detached casitas for adult children or caregivers, and it's adjacent to the new Exceptional Community Hospital driving local rental demand. Newer Century Communities SFH subdivision with family-oriented homes on larger lots near the Toltec school zone, ideal for in-law suites or renter-occupied casitas.
Permit Process
Permit applications are reviewed by the Community Development , with a plan check timeline of approximately 13 weeks. Permit fees in Eloy range from $3,500 to $12,000 depending on project scope. Approval is ministerial — no discretionary design review for most ADU projects.
Many Eloy parcels sit under a Development Agreement tied to the master-planned communities built by the big homebuilders, and if yours does, Community Development tacks on a separate $3,600 Development Agreement fee before they'll even log your ADU application. Because Eloy's substantive plan review alone runs about 50 staff days, homeowners who don't confirm their lot's Development Agreement status upfront often get bounced back weeks into the process to pay this fee and resubmit, effectively resetting their spot in the review queue.
"In my experience with Eloy permits, that 13-week timeline and the $/sqft cost figure are both state-level estimates rather than numbers pulled from actual local jobs, so I'd treat them as a starting point, not a promise—get a written quote from a contractor who's pulled ADU permits in Eloy specifically. I'll also add: since STRs are allowed here, I've seen a fair number of clients get tripped up later by that 30% HOA prevalence, so confirm your parcel isn't under an HOA before you bank on rental income."
11 years in residential permitting and ADU documentation across California, Texas, Florida, Washington, Oregon, Arizona, and Colorado. This guide was researched and verified against Eloy's building department records and current 2026 Arizona's HB 2720 ADU law.
Property Eligibility
Is My Eloy, AZ Property Eligible for an ADU?
Eloy 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 Eloy under Arizona's HB 2720 and HB 2928 (2025). No owner-occupancy requirement in Eloy — you can rent both units as investment properties. Arizona doesn't set a fixed statutory review-day count — confirm the current timeline with the Community 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 Eloy's local rules. Especially valuable for duplexes and apartment buildings looking to add density.
HOA-Governed Properties
Approximately 30% of Eloy 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.
Always verify eligibility with Community Development before designing.
Free — No Obligation
Will Eloy Approve an ADU on Your Lot?
Send us the address and we’ll check it against Eloy’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 Eloy 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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Eloy ADU Return Calculator — Built With 2026 Local Data
Pre-loaded with verified Eloy 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 × 21% 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: Community Development (source ↗), Zillow Rental Market Reports, and public state/local housing data. Last verified: 2026-08-15.
Local Market Data
Top Eloy Neighborhoods for ADU Investment
Robson Ranch Arizona
Large 55+ active-adult master-planned community of single-family homes where many owners want detached casitas for adult children or caregivers, and it's adjacent to the new Exceptional Community Hospital driving local rental demand.
Toltec Arizona Valley
Newer Century Communities SFH subdivision with family-oriented homes on larger lots near the Toltec school zone, ideal for in-law suites or renter-occupied casitas.
Eloy Rural / Acreage Parcels
Eloy Rural / Acreage Parcels — larger rural lots around the outskirts easily satisfy the 8,000-sq-ft minimum and offer privacy/space for detached ADUs serving the I-10/I-8 logistics workforce.
Verde Valley Ranch
Century Complete new-construction SFH community with affordable entry prices and uniform lot sizes that can meet the City's 8,000-sq-ft ADU minimum, suiting first-time ADU investors.
Eloy Industrial Corridor (Residential Edge)
Homes bordering the industrial/logistics parks near the I-10 & I-8 interchange serve as the natural rental base for distribution and manufacturing employees.
Picacho Area
South-of-Eloy residential pocket along I-10 with larger parcels south of the city, ideal for detached ADUs catering to commuters toward Tucson.
Toltec Residential Area
Established, lower-density residential pocket near Curiel and Toltec Elementary schools with stable renter demand from school-district staff and agricultural workers.
Eleven Mile Corner Vicinity
Rural-residential crossroads between Eloy, Casa Grande, and Coolidge with oversized lots that flexibly accommodate detached ADUs for commuters to Casa Grande employers (Abbott, Frito-Lay).
Downtown Eloy
Walkable core near City Hall, the post office, and downtown service jobs where older single-family homes can be supplemented with granny flats for local workers.
Old Town Eloy / Historic Core
Oldest SFH housing stock near the Southern Pacific rail corridor where infill casitas can add supply in the supply-constrained downtown rental market, though lot sizes often test the 8,000-sq-ft minimum.
Eloy ADU Market at a Glance
Local Zoning Rules
2026 Eloy ADU Rules
Eloy's 2026 ADU ordinance caps new units at 1,000 sq ft and 25 ft of height — 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. Eloy 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 $3,500–$12,000 — in line with what most homeowners budget for permitting, and plan check takes about 13 weeks at Community Development. Submit directly to the department online — link below.
| Regulation | Eloy Allowance |
|---|---|
| Max ADU Size | 1,000 sq ft |
| Max Height | 25 ft |
| Side Setback | 5 ft |
| Rear Setback | 5 ft |
| Architect / Engineer Stamp | Not required under the size cap* |
| Owner Occupancy | Not required |
| Short-Term Rental | Permitted |
| Coastal Overlay | No |
| Design Review | No |
| HOA Prevalence | 30% of properties |
| Permit Fees | $3,500–$12,000 |
*Load-bearing modifications to the existing house always need an engineer stamp regardless of ADU size. Data verified 2026-08-15T06:10:50.038Z. Always confirm with the Community Development before designing.
Eloy Permit Process
Eloy ADU Permit Timeline & Fees
Local Financing Resources
Local ADU Lenders in Eloy
These lenders offer HELOC, construction, and renovation loans for ADU projects in Pinal County. Compare terms before committing.
Local credit union offering HELOCs with rates as low as 7.25%.
Visit Lender ↗Offers adjustable rate construction loans with initial fixed-rate periods up to 10 years.
Visit Lender ↗Provides HELOCs with variable interest rates starting as low as 6.75%.
Visit Lender ↗Offers 'All-in-One' and 'Two-Time Close' construction loan products.
Visit Lender ↗Specialty ADU lender providing renovation loans and HELOCs from $10,000 to $500,000.
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 Eloy
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 Eloy 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.
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 Community Development. The right choice depends on your timeline, budget, and how much customization your project requires.
Drawing Package Details
What's Included in Your Eloy ADU Package
Engineered for AZ Permit Approvals
What You Get
Eloy ADU Drawings — What's Included
How our permit-ready drawing sets compare to hiring a local architect in Eloy:
| 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 Eloy 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 $814/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 Eloy'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 Community 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 Eloy.
Build costs reflect local construction data for Eloy. Client names are initials only. Permit timelines are project-specific and may vary.
"Permit approved on the first submittal. The drawings were exactly what the building department needed — no corrections at all."
"We converted our two-car garage in under 6 months. Drawings were ready in 10 days — faster than any local firm we contacted."
"The JADU drawings included everything the city required. Submitted day 11, approved six weeks later. Tenant moved in two months after that."
Representative scenarios. Build costs modeled using Eloy construction data (city-verified data) and Community Development. Outcomes vary by project scope and site conditions.
Building Code
Eloy Climate Zone & Energy Code
Arizona has no mandatory statewide energy code equivalent to California's Title 24; Eloy (Pinal County) follows the locally adopted International Energy Conservation Code (IECC), with IECC 2000 established as Arizona's voluntary statewide baseline by Laws 2001, Chapter 340.
Compare Cities
Eloy vs. Nearby Arizona Cities
| City | Build Cost/sqft | Permit Fees | 1BR ADU Rent | Cap Rate | Eligibility |
|---|---|---|---|---|---|
| Eloy ← you | — | $3,500+ | $814/mo | 7.1% | Free check → |
| Maricopa | $275 | $1,800+ | $1,383/mo | 5.3% | View → |
| Casa Grande | $260 | $1,700+ | $1,204/mo | 6% | View → |
| Apache Junction | $300 | $13,253+ | $1,346/mo | 6.6% | View → |
| Florence | $250 | $500+ | $961/mo | 5.5% | View → |
Frequently Asked
Eloy ADU Questions
How much does it cost to build an ADU in Eloy? +
What is the maximum ADU size allowed in Eloy? +
How long does the ADU permit process take in Eloy? +
Do I need owner-occupancy to build an ADU in Eloy? +
What's the rental income potential for an ADU in Eloy? +
How much does it cost to get ADU drawings in Eloy? +
What drawings are required for an ADU permit in Eloy? +
Can I convert my garage to an ADU in Eloy? +
What neighborhoods in Eloy are best for ADU investment? +
Is Eloy ADU-friendly? +
How much will an ADU increase my property value in Eloy? +
Can I use my Eloy ADU as a short-term rental (Airbnb / VRBO)? +
Does Eloy's seismic zone affect ADU construction requirements? +
Where do I submit ADU plans in Eloy? +
More Services in Eloy
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