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 · Drawings from $997 (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 $8,923 to $12,461 depending on project scope. Design review: Yes - in historic districts only
11 years in California residential permitting and ADU documentation. This guide was researched and verified against Florence's building department records and current 2026 California ADU law.
Property Eligibility
Is My Florence, AZ Property Eligible for an ADU?
Florence homeowners benefit from California's state ADU law — one of the most permissive frameworks in the country since 2020. Here's what applies to your property before you start designing.
Single-Family Home
Permitted on single-family lots in Florence under California state law. No owner-occupancy requirement in Florence — you can rent both units as investment properties. Ministerial permit approval — no neighbor input or discretionary design review.
Multi-Family Property
Up to 2 detached ADUs plus JADUs (Junior ADUs) within the existing main structure are permitted under California state law. Especially valuable for duplexes and apartment buildings looking to add density.
HOA-Governed Properties
Approximately 96% of Florence homes are in an HOA. California law (AB 670) prohibits HOAs from banning ADUs outright, but they can impose reasonable architectural standards. Our drawings include HOA submission formatting.
Historic Districts
Yes - in historic districts only
Always verify eligibility with Community Development Department before designing.
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. Assumes ~85% occupancy, ~30% expense ratio, 21% property value uplift. Consult a financial advisor before investing.
Data sources: Florence Development Services Department, Zillow Rental Market Reports, local appraiser records. Last verified: 2026-05-30.
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
Florence ADU Zoning Regulations
| Regulation | Florence Allowance |
|---|---|
| Max ADU Size | 1,000 sq ft |
| Max Height | 15 ft |
| Side Setback | 5 ft |
| Rear Setback | 5 ft |
| Owner Occupancy | Not required |
| Short-Term Rental | Restricted |
| Coastal Overlay | No |
| Design Review | Yes - in historic districts only |
| HOA Prevalence | 96% of properties |
Data verified recently. 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
$997 – $1,997
- ✓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.
Drawing Package Details
What's Included in Your Florence ADU Package
Engineered for AZ Permit Approvals
Transparent Pricing
Florence ADU Drawing Costs — Compared
What homeowners typically pay for permit-ready ADU drawings in Florence, by service type:
| Service Type | Price Range | Turnaround | Customization |
|---|---|---|---|
| Local Architect | $3,000 – $8,000 | 4–8 weeks | Fully custom |
| Build With A Plan · Starter | $997 | 10 days | Standard |
| Build With A Plan · Standard | $1,497 | 10 days | Standard |
| Build With A Plan · Premium | $1,997 | 7 days | Enhanced |
- ✓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
- ✓Garage conversion alt plan
- ✓HOA submission package
- ✓2 rounds of revisions
- ✓Priority 7-day turnaround
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 real project outcomes from clients who used our permit-ready drawing sets across California.
"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."
Client first names and last initials only. Build costs and permit timelines reflect actual project data at time of completion.
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 | Drawings |
|---|---|---|---|---|---|
| Florence ← you | $250 | $8,923+ | $961/mo | 5.5% | From $997 |
| 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 → |
| Phoenix | $250 | $1,800+ | $1,239/mo | 8.0% | 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 included in the permit set? +
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
Start Your Florence ADU Today
Permit-ready drawings from $997. Delivered in 10 business days. Designed for Florence's building department. 14-day money-back guarantee.
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