ADU Design Resource · Florence, AZ
The Complete Guide to
Building an ADU in Florence, AZ
Everything Florence 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 Florence, AZ ADUs
Market Context
Florence has a median home value of $270,000. Adding an ADU typically increases that by 21% — approximately $56,700 in added equity. A 1-bedroom ADU in Florence rents for approximately $961/month in the Pinal County rental market , yielding a 5.5% cap rate on the investment. Occupancy averages 92% in this market.
Top Florence neighborhoods for ADU investment include Anthem at Merrill Ranch, Magma Ranch, Mesquite Trails, Florence Gardens, Quail Run. High-end master-planned community with larger lots and strong demand for multi-generational living space. High concentration of single-family homes and consistent rental demand in a popular residential area.
Permit Process
Permit applications are reviewed by the Community Development Department , with a plan check timeline of approximately 8 weeks. Permit fees in Florence range from $500 to $25,000 depending on project scope. Design review: Yes - in historic districts only
Plan review fees are non-refundable, and submitting an application and paying fees does not guarantee permit issuance. Exact costs depend on project scope and jurisdiction requirements.
"In my experience with Florence's 96% HOA saturation, that 8-week timeline and $250/sqft figure are state-level estimates, not a reflection of what's happening on the ground here — I'd call the Community Development Department directly and get at least two local contractor quotes before penciling in a budget. What the data also doesn't show is the HOA architectural review layer, which routinely adds weeks on top of the municipal plan check clock, so don't assume those two processes run in parallel."
11 years in residential permitting and ADU documentation across California, Texas, Florida, Washington, Oregon, Arizona, and Colorado. This guide was researched and verified against Florence's building department records and current 2026 Arizona's HB 2720 ADU law.
Property Eligibility
Is My Florence, AZ Property Eligible for an ADU?
Florence 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 Florence under Arizona's HB 2720 and HB 2928 (2025). No owner-occupancy requirement in Florence — 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 Department.
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 Florence's local rules. Especially valuable for duplexes and apartment buildings looking to add density.
HOA-Governed Properties
Approximately 96% of Florence 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
Yes - in historic districts only
Always verify eligibility with Community Development Department before designing.
Free — No Obligation
Will Florence Approve an ADU on Your Lot?
Send us the address and we’ll check it against Florence’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 Florence 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.
Free Tool · No Email Required
Florence ADU Return Calculator — Built With 2026 Local Data
Pre-loaded with verified Florence 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 Department (source ↗), Zillow Rental Market Reports, and public state/local housing data. Last verified: 2026-07-12.
Local Market Data
Top Florence Neighborhoods for ADU Investment
Anthem at Merrill Ranch
High-end master-planned community with larger lots and strong demand for multi-generational living space.
Magma Ranch
High concentration of single-family homes and consistent rental demand in a popular residential area.
Mesquite Trails
A growing master-planned community with modern lot layouts ideal for detached accessory structures.
Florence Gardens
Established residential area with a high percentage of detached homes and proximity to town services.
Quail Run
Located in the high-demand northwest corridor where property values and rental interest are strongest.
Cactus Leaf
Features larger residential lots that easily accommodate the setbacks required for detached ADUs.
Town Center / Historic District
Central location with older, larger lots that offer significant infill development potential.
Sun City Florence
Stable residential neighborhood with high owner-occupancy rates looking for rental income options.
Wildflower
Newer construction area where modern zoning often permits accessory structures more readily.
Springfield
Suburban layout with high single-family density providing ample opportunities for backyard units.
Florence ADU Market at a Glance
Local Zoning Rules
2026 Florence ADU Rules
Florence's 2026 ADU ordinance caps new units at 1,000 sq ft and 15 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. Florence 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 $500–$25,000 — among the higher permit costs we track, and plan check takes about 8 weeks at Community Development Department. Submit directly to the department online — link below.
| Regulation | Florence Allowance |
|---|---|
| Max ADU Size | 1,000 sq ft |
| Max Height | 15 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 | Restricted |
| Coastal Overlay | No |
| Design Review | Yes - in historic districts only |
| HOA Prevalence | 96% of properties |
| Permit Fees | $500–$25,000 |
*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 Community Development Department before designing.
Florence Permit Process
Florence ADU Permit Timeline & Fees
Local Financing Resources
Local ADU Lenders in Florence
These lenders offer HELOC, construction, and renovation loans for ADU projects in Pinal County. Compare terms before committing.
OneAZ advertises one-time-close construction loans up to $3,000,000 with 80% financing available.
Visit Lender ↗Local Pinal County credit union offering HELOCs with borrowing up to 90% CLTV and up to $200,000.
Visit Lender ↗Large Arizona credit union offering competitive HELOC rates suitable for home improvements and ADU funding.
Visit Lender ↗Offers custom home improvement and construction loans marketed for major renovations or building new homes.
Visit Lender ↗Specialty platform partnering with credit unions to offer ADU-specific financing programs and resources.
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 Florence
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 Florence 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
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 Department. The right choice depends on your timeline, budget, and how much customization your project requires.
Drawing Package Details
What's Included in Your Florence ADU Package
Engineered for AZ Permit Approvals
What You Get
Florence ADU Drawings — What's Included
How our permit-ready drawing sets compare to hiring a local architect in Florence:
| 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 Florence 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 $961/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 Florence'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 Department. 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 Florence.
Build costs reflect local construction data for Florence. 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 Florence construction data (city-verified data) and Community Development Department. Outcomes vary by project scope and site conditions.
Building Code
Florence Climate Zone & Energy Code
Arizona Energy Code (IECC-based): Arizona uses an IECC-based state/local energy code where residential ADUs must meet envelope, fenestration, HVAC efficiency, and service-hot-water requirements via prescriptive or performance compliance paths.
Compare Cities
Florence vs. Nearby Arizona Cities
| City | Build Cost/sqft | Permit Fees | 1BR ADU Rent | Cap Rate | Eligibility |
|---|---|---|---|---|---|
| Florence ← you | $250 | $500+ | $961/mo | 5.5% | 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 → |
| Eloy | — | $3,500+ | $814/mo | 7.1% | View → |
Frequently Asked
Florence ADU Questions
How much does it cost to build an ADU in Florence? +
What is the maximum ADU size allowed in Florence? +
How long does the ADU permit process take in Florence? +
Do I need owner-occupancy to build an ADU in Florence? +
What's the rental income potential for an ADU in Florence? +
How much does it cost to get ADU drawings in Florence? +
What drawings are required for an ADU permit in Florence? +
Can I convert my garage to an ADU in Florence? +
What neighborhoods in Florence are best for ADU investment? +
Is Florence ADU-friendly? +
How much will an ADU increase my property value in Florence? +
Can I use my Florence ADU as a short-term rental (Airbnb / VRBO)? +
Florence has a high HOA rate (96%) — do I need HOA approval for an ADU? +
Does Florence's seismic zone affect ADU construction requirements? +
Where do I submit ADU plans in Florence? +
More Services in Florence
Free · No Obligation
Not Sure If Your Florence Lot Qualifies?
Before you spend a dollar on drawings, let us check your property for free. We'll tell you honestly whether your Florence lot supports an ADU, what it could rent for, and what to do next — no pressure, no sales pitch.
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