ADU & Guest House in Arizona | The Ravenscroft Group
Arizona Real Estate · ADU & Guest Houses

Thinking about an ADU?
Let's talk about what it really means for you.

Arizona's new ADU law opened real doors for homeowners. But before you commit to a construction project, there's a more important question to answer — one that could save you hundreds of thousands of dollars.

The question nobody's asking you

Is building an ADU actually
the right move?

Most people exploring ADUs fall into one of three situations — and each one has a very different right answer. Building a guest house is one path. But for many Arizona homeowners, buying, selling, or upgrading is the smarter financial play.

Here's how to think about where you actually stand.

01
You want more income from your property
An ADU can generate rental income — but so can buying a purpose-built investment property with better returns, less construction risk, and no disruption to your home. The math matters. Let's run it.
02
You need more space for family
Building an ADU for aging parents or adult children can make sense. But in many cases, upsizing your home — or buying a property that already has a casita — is faster, cheaper, and less stressful than new construction.
03
You're thinking about your home's value
An ADU does add value — but the market premium varies enormously by neighborhood. In some areas, you'd recoup every dollar. In others, you'd be overimproving. Knowing your specific market changes everything.
Arizona ADU guest house exterior backyard Phoenix Scottsdale rendering
Real scenarios Eric has helped navigate

When building makes sense —
and when it doesn't

🏡
The "we need more space" family
A couple in Scottsdale wanted to build a guest suite for her parents. Construction quotes came in at $180,000. Eric ran the numbers: for the same budget, they could sell their current home and buy a 4-bed property with an existing casita — and end up with a larger home, no construction headache, and $40,000 left over.
→ Result: Upgraded home, better outcome
📈
The investor who wanted passive income
A Phoenix homeowner had equity and wanted to generate $2,000/month from an ADU. After comparing the ADU build cost, timeline, and projected rent against buying a dedicated investment property, the investment property delivered twice the cash-on-cash return with no construction risk.
→ Result: Investment property purchased
🔑
When the ADU was the right answer
A Gilbert homeowner had an oversized lot, a paid-off mortgage, and a clear need for a private space for her mother. Construction cost was reasonable, she wasn't moving, and the ADU added genuine value. In this case, building made perfect sense — Eric helped her find the right builder and understand the permit process.
→ Result: ADU built, right call for their situation
💡
The equity play nobody considered
A Chandler homeowner was planning an ADU to boost resale value. Eric showed them that in their specific neighborhood, a kitchen remodel and strategic listing price would net them more at closing — and they'd sell in 3 weeks, not wait 12 months for construction to finish.
→ Result: Sold for top dollar, faster
Modern ADU kitchen rendering Arizona guest house interior design
Modern ADU kitchen — custom finishes, full-size appliances
Arizona ADU living room interior rendering Phoenix guest house
Open-concept living area — designed for comfortable long-term living
Arizona HB 2720 — what you actually need to know

The law changed.
Your options expanded.

In 2023, Arizona passed HB 2720 allowing owners of single-family homes to build up to two ADUs on their property — one attached, one detached — without needing to rezone or obtain special permits that were previously required. This is genuinely significant and has opened the door for more homeowners to explore this path.

But "you can build one" and "you should build one" are very different statements. Lot size, HOA restrictions, neighborhood comps, your financial position, and your timeline all factor into whether an ADU is the right move for your specific situation.

That conversation takes about 20 minutes. It's free. And it could save you a construction project you didn't need — or confirm that building is exactly the right call.

$80K–$200K
Typical ADU construction cost in Arizona depending on size, finishes, and lot conditions. Know this number before you commit.
9–14 mo
Average time from ADU decision to move-in, including design, permits, and construction. Many buyers find a suitable property faster.
$1,800–$3,200
Monthly rental range for a well-located Arizona ADU. Worth comparing against investment property alternatives.
Up to 30%
Potential increase in home value from an ADU in high-demand Arizona markets — but neighborhood specific. Not universal.
Arizona ADU bathroom rendering guest house interior Phoenix Scottsdale
ADU bathroom — full private bath, designed to stand alone comfortably
Where Eric fits in

One honest conversation
before you decide anything

Eric doesn't build ADUs — he helps you figure out whether building one is actually the right financial decision for your situation. If it is, he can point you to the right people. If buying, selling, or upgrading makes more sense, he'll show you exactly why and what that looks like in your market.

There's no pitch here. Just the numbers, your options, and a clear recommendation.

Eric Ravenscroft
Eric Ravenscroft
Realtor · The Ravenscroft Group · Arizona
"I've talked a lot of people out of ADU projects that would have cost them more than they'd ever get back. I've also helped others realize it was exactly the right move. The answer depends entirely on your situation — and it's usually clear within the first conversation."
Book a free 20-min call →
Prefer to call? 480-269-5858
Free tools
Run the numbers yourself first
Use the Investment Analyzer, STR Income Estimator, and Home Sale Proceeds calculators to model your specific scenario before we talk.
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Common questions

Things people ask
before they call

Does my property qualify for an ADU under the new Arizona law?
Under HB 2720, most single-family lots in Arizona now qualify. The main constraints are HOA rules (which can still prohibit ADUs), lot size minimums, and setback requirements that vary by municipality. The fastest way to find out is a quick conversation — Eric can tell you within minutes based on your address.
Will an ADU actually increase my home's resale value?
In most Arizona markets, yes — but the amount varies significantly by neighborhood, ADU quality, and buyer pool. In some Scottsdale and Phoenix zip codes, an ADU adds meaningful value to your listing. In others, you'd be overbuilding for the price point. Eric can pull comparable sales in your area to show you the real numbers.
How does building an ADU compare to buying an investment property?
For pure income generation, a dedicated investment property often wins — better returns, no construction risk, immediate income, and you're not living on a construction site. But if your goal is multigenerational living or adding a private space without moving, the calculation is different. It comes down to your goals, your timeline, and your current equity position.
What if I want to build an ADU and then sell the whole property?
This can be a strong play in the right market — a home with an income-producing ADU attracts a wider buyer pool and often commands a premium. But timing matters. If the market is moving fast, you may net more by selling now than waiting 12 months for construction to finish. Eric can model both scenarios side by side so you can make an informed decision.
I just want to know if I should build or buy. Can you help with that?
That's exactly the conversation Eric has every week. It's free, takes about 20 minutes, and you'll leave with a clear recommendation either way. No obligation, no pressure — just someone who knows the Arizona market and will tell you what actually makes sense for your situation.
Before you decide anything
What is your home worth
in today's Arizona market?
Whether you're considering building an ADU, selling, or upsizing — knowing your current home value is the starting point for every decision. Eric provides free, no-obligation market valuations for Arizona homeowners.
Free 20-minute consultation

Build, buy, sell, or stay —
know before you decide

Eric will look at your specific property, your equity, your goals, and the current Arizona market — and give you a straight answer on what makes the most financial sense.

Schedule your free call →
No obligation · No sales pitch · Or call 480-269-5858
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