Room addition and ADU contractor Phoenix AZ — Iconic Builders AZ

Room Additions, ADUs & Casitas — Phoenix AZ

Add square footage, create rental income, or build the guest suite you've always wanted. Licensed GC · ROC #340534.

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Room Additions · ADUs · Casitas

Phoenix's Trusted Addition & ADU Contractor

Whether you need more space for your family, want to house aging parents, or are looking to generate rental income — Iconic Builders AZ designs and builds room additions, ADUs, and casitas throughout Phoenix and Scottsdale.

As a licensed general contractor (ROC #340534) with dual residential and commercial classification, we handle every phase in-house: design, permits, foundation, framing, MEP rough-in, insulation, drywall, finishes, and final inspection. One contract. One team. No surprises.

What We Build

Room Additions, ADUs & Casitas — All Project Types

Room addition contractor Phoenix AZ

Attached Room Additions

Expand your existing footprint with a master suite, family room, home office, or in-law suite built seamlessly onto your home. Includes foundation, framing, roofline integration, and full interior finish.

Most Popular
ADU casita builder Phoenix Scottsdale

Detached ADU / Casita

A fully independent living unit on your lot — its own entrance, kitchen or kitchenette, bath, and living space. Ideal for rental income, multi-generational living, or a private home office.

Rental Income Ready
Garage conversion ADU Phoenix AZ

Garage Conversion ADU

Convert an unused garage into a permitted, livable ADU. Most cost-effective path to adding square footage or rental income. We handle insulation, HVAC, electrical, plumbing, windows, and entry.

Most Cost-Effective

Why Phoenix Homeowners Are Building ADUs Right Now

Arizona's ADU legislation, rising Phoenix rents, and short-term rental demand make now an ideal time to add a casita or ADU. Here's what our clients typically see:

$1,400+
Average monthly long-term rental income from a Phoenix ADU
$2,800+
Average monthly short-term rental income (Airbnb/VRBO) in Phoenix metro
20–30%
Typical increase in property value after a permitted addition or ADU
6–9 yrs
Average payback period on ADU construction cost via rental income

Everything Included — One Licensed Contractor

We manage every phase of your addition or ADU from permit application to final walkthrough.

Design & Planning

We work with your lot, setbacks, and HOA rules to design an addition that maximizes livable space within what's permitted.

Permits & Zoning

Full permit application management including zoning research, site plans, and all required inspections. We handle the City, you handle nothing.

Foundation & Framing

Slab foundations, stem walls, and wood framing by our licensed structural crew. Engineered plans provided where required.

Electrical & Plumbing

Full MEP rough-in and finish for the new space — panel upgrades, dedicated circuits, all new plumbing including kitchen and bath fixtures.

HVAC

Mini-split systems or extension of existing ductwork. Properly sized for Phoenix heat. All mechanical permits pulled and inspected.

Interior Finishes

Insulation, drywall, flooring, paint, trim, doors, windows, kitchen, and bath — matched to your existing home or designed fresh.

Exterior & Roofline

Seamless roofline integration on attached additions. Stucco, paint, and landscaping repair after construction. Curb appeal protected.

Separate Entry & Utilities

For ADUs: private entrance, separate utility sub-meters where required, and mailbox setup for long-term rental compliance.

Our Process

How Your Addition or ADU Gets Built

1

Free Site Visit

We assess your lot, review zoning and setbacks, and discuss what's buildable within your budget.

2

Design & Permit

We draft plans, submit for permits, and handle all city correspondence. You're kept in the loop, not buried in paperwork.

3

Foundation & Frame

Ground breaks once permits are in hand. Foundation, framing, and rough-in inspections completed in sequence.

4

MEP & Insulation

Electrical, plumbing, and HVAC rough-in. Insulation and drywall follow after rough-in inspections pass.

5

Finishes & CO

Flooring, tile, cabinets, paint, fixtures — then final inspection and Certificate of Occupancy.

Room Addition & ADU FAQs — Phoenix AZ

How much does a room addition cost in Phoenix? ▼
Room additions in Phoenix typically run $150–$300 per square foot depending on complexity and finish level. A 400 sq ft master suite addition averages $60,000–$120,000. A detached ADU or casita ranges from $80,000–$200,000+ depending on size. We provide free, itemized estimates with zero obligation.
Are ADUs legal in Phoenix AZ? ▼
Yes. Arizona passed statewide ADU legislation allowing accessory dwelling units on most single-family residential lots. Local rules still govern setbacks, height limits, and lot coverage. Iconic Builders AZ handles all zoning research and permitting so you don't have to navigate city codes yourself.
Can I rent out my ADU or casita in Phoenix? ▼
Yes — Arizona law permits ADUs to be rented as long-term or short-term rentals (Airbnb/VRBO) in most Phoenix-area cities. Many of our clients build ADUs specifically for rental income. We build to rental-grade standards with separate entries and utility sub-meter provisions.
How long does it take to build an ADU in Phoenix? ▼
Total timeline from signing a contract to Certificate of Occupancy is typically 5–8 months. Phoenix and Scottsdale permit timelines currently run 4–8 weeks. Once permits are in hand, construction takes 3–5 months depending on size and complexity.
Can I convert my garage into a rental unit? ▼
Yes. Garage-to-ADU conversions are the most cost-effective path to rental income — you're working within an existing structure and slab. We handle all conversions with proper permits, insulation, HVAC, electrical, plumbing, and a legal separate entry. No shortcuts, fully inspected.
Do you build ADUs and additions in Scottsdale? ▼
Yes. Iconic Builders AZ serves Phoenix, Scottsdale, Paradise Valley, Tempe, Mesa, Chandler, Gilbert, and Glendale. Scottsdale has its own zoning requirements for ADUs which we're fully familiar with.

Ready to Add Space & Value to Your Home?

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