Custom Casita Builder in Fountain Hills, AZ: Reliable Casita Professionals Near You

Reimagine your empty backyard into a stunning, revenue-producing, or family-friendly casita with ERC (Everything Residential & Commercial). We take care of planning, permitting, and building — delivering clear costs, quick turnaround times, and unmatched local insight throughout the entire process.
ERC is Fountain Hills’s trusted custom casita builder, creating everything from welcoming in-law units and multigenerational living spaces to rental-ready ADUs, backyard offices, poolside retreats, and private backyard retreats. Every casita we build is tailored to your life, your lot, and your vision. Proudly serving greater Fountain Hills and surrounding communities, including Arcadia, Scottsdale, Tempe, Chandler, Mesa, and Gilbert.
Get Started with a Free Casita Consultation Today
Why Build a Custom Casita in Fountain Hills?

Creating a custom casita in Fountain Hills goes beyond a basic home upgrade — it’s among the most strategic lifestyle and financial choices a homeowner can make. Given Arizona’s strong housing market, attractive property tax structure, and year-round sunshine, a professionally built casita reshapes how you utilize and enjoy your space.
A thoughtfully designed casita gives your family real flexibility. It creates privacy for aging parents, adult children, or visiting guests without the expense of purchasing a separate property. Throughout Fountain Hills, homeowners are transforming their casitas into productive home offices, artistic studios, and relaxing backyard escapes — places built for focus, renewal, and connection.
Limitless Options for Your Custom Casita

Multigenerational Living: Give aging parents or grown children a comfortable, separate area to live independently — right in your own backyard.
Home Office or Creative Studio: Great for work-from-home professionals or artists who want a quiet, dedicated studio just outside your home.
Rental or Airbnb Income Property: Earn consistent passive income in high-demand markets like Scottsdale and Tempe, well-suited for both long-term renters and vacation renters.
Private Guest Suite: Accommodate friends and family with their own fully equipped retreat, including a kitchen, bathroom, and living area.
Wellness or Hobby Space: Transform your casita into a personal gym, yoga studio, art workshop, or meditation space.
Fountain Hills homeowners appreciate how a single custom casita can be used in many ways and adapt with their lifestyle for the long term.
Other Construction Services We Offer
Eager about our expertise? Allow us to dive headfirst into the world of exceptional quality and cutting-edge approaches with the experts at.
Our extensive service lineup is incredibly broad, fully equipped to handle all kinds of construction needs in the East Valley region of Fountain Hills, AZ.
Check out our signature solutions that achieve remarkable transformations!
Our services consist of:
Why Invest in Your Custom Casita With ERC?

Casitas vs. Assisted Living
Many Fountain Hills households often find themselves looking for a practical way to look after aging loved ones without the sky-high costs of assisted living facilities.
A custom casita built by ERC fills that gap seamlessly.
Our fully ADA-compliant casita plans include no-step entrances, grab bars, wider hallways, and emergency call systems — all designed to provide the ease, privacy, and dignity your family deserves.
From Scottsdale all the way to Chandler, we help Fountain Hills families build safe, beautiful casitas where aging in place becomes a real, affordable reality.
Casitas Designed for Supported Living
Families caring for members with disabilities benefit from flexible, dignified housing solutions.
A custom casita on your Fountain Hills property can be customized for your family member’s specific needs — including wider doorways, accessible showers, specialized layouts, and full ADA compliance — while allowing them to stay nearby and maintaining their independence.
Casitas Perfect for College Students & Older Teens
For Fountain Hills families with students at ASU, Grand Canyon University, or nearby colleges, a backyard casita provides an affordable, smart option to apartment leasing.
It gives older teens and young adults a private, self-contained area to develop — close enough for support, separate enough to develop real-world skills.
Pool House Casitas
A custom pool house casita turns your backyard into a luxury oasis.
Whether you picture a cool, shaded escape, an entertainment hub, or a fully equipped guest suite next to your pool, ERC creates pool house casitas that maximize every corner of your yard while dramatically increasing your property’s appeal and value.
Increase Home Worth with a Custom Casita

A professionally designed and built casita can dramatically elevate your home’s resale appeal and overall market value across Fountain Hills. As demand for flexible and multigenerational living reaches all-time highs, investing in a custom casita is among the most lucrative upgrades homeowners in Fountain Hills can pursue.
Local agents frequently report that homes with quality casitas in communities like Arcadia, North Phoenix, and Chandler move faster on the market and achieve higher sale values. Modern buyers value flexibility — from accommodating extended family and entertaining guests comfortably to creating rental income streams that help cover mortgage expenses.
ERC designs every casita to blend effortlessly with your existing home, ensuring consistent architecture, materials, and finishes throughout. Whether it’s a high-end poolside retreat or a contemporary ADU, our casitas enhance curb appeal while delivering enduring value.
A well-planned casita can yield returns of up to 30%, influenced by its size, features, and local market demand. It’s not just extra square footage — it’s an equity-building, lifestyle-enhancing investment custom-crafted for Fountain Hills’s fast-growing market.
When you partner with Everything Residential & Commercial, you’re doing more than just constructing an addition. You’re increasing equity, improving comfort, and creating future opportunities for your property.
EXCELLENT
Based on 54 reviews
Posted on Google![]()
ElleAnna ChaconTrustindex verifies that the original source of the review is Google.
they did a full kitchen remodel in my home and i was very satisfied with the way everything turned out. they are very knowledgeable and trustworthy. i can tell they wanted me to be 100% satisfied with the remodel and i definitely was! they surpassed my expectations!Posted on Google![]()
Lauren RamosTrustindex verifies that the original source of the review is Google.
ERC is the top of the line. They handle each build with precision, dedication and accuracy while being transparent about the outcome/timeframe. I have had the pleasure of working with both Christian and Randy to help renovate my commercial business and will be contacting them further for any other projects.Posted on Google![]()
Christopher ColemanTrustindex verifies that the original source of the review is Google.
ERC has made the construction process as easy as it can be. The Casita is very beautiful and we're extremely happy with the results!Posted on Google![]()
Steven SpirlongTrustindex verifies that the original source of the review is Google.
We used Everything Residential for a large home addition and RV garage. Our project turned out amazing! They were very easy to work with, and each step moved quickly after getting approved from our city. They were a great team and all of the subs that were used on the project were highly professional and friendly. They had good communication over the course of the project and we would highly recommend them to anyone wanting a professional, 5 star home renovation or addition.Posted on Google![]()
Tonya CrosbyTrustindex verifies that the original source of the review is Google.
They did a large home addition for me and it was incredible! Thank you Randy and ChristianPosted on Google![]()
Mitchell NilanTrustindex verifies that the original source of the review is Google.
The level of knowledge Christian has is amazing, not to mention his team is equally as knowledgeable! Their working environment together and with everyone included is so great! Do yourself a favor and just watch a few of his videos and you will see that these guys are the EXACT group of people you need for your brand new breathtaking new addition. YOU FOUND THE RIGHT PEOPLE FOR THE JOB WHEN YOU GO WITH ERC.build, I promise you that!Posted on Google![]()
Andrew ShlaimonTrustindex verifies that the original source of the review is Google.
Christian was great to work with. Very organized and efficient.Posted on Google![]()
Routhier ResidenceTrustindex verifies that the original source of the review is Google.
These guys came in and took care of everything that needed completed for the sale of our home. I would highly recommend these guys for any of your home needs. Christian and Cody were very professional on time and got things done..Posted on Google![]()
Michelle WennerstrumTrustindex verifies that the original source of the review is Google.
They built a casita for us. The casita turned out better than I could have imagined. Great company to work with. Company communication was top notch, quality of work was 5 stars, entire crew was great, very professional. Highly recommended!Posted on Google![]()
Josh MarquezTrustindex verifies that the original source of the review is Google.
Had to build a back house for laundry and storage and Christian and his team were very clear and easy to work with. Job was done before the deadline and came out perfect. Would recommend for any job of any size!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
The Seamless Casita Building Experience

At ERC, creating your tailor-made Fountain Hills casita is simple, transparent, and hassle-free throughout the entire process.
- Free Site Visit & Property Evaluation — Our team meets you on-site at your home to review your property, discuss your casita plans, and confirm zoning or HOA requirements.
- Custom Casita Design with 3D Models — See your finished casita prior to a single shovel breaks ground, with complete 3D rendering of floor plans, materials, and finishes.
- Transparent Pricing & Estimate — Receive a fully itemized casita estimate with no hidden fees, plus insight on financing and rental ROI projections.
- In-House Permitting & HOA Coordination — ERC manages every Fountain Hills building permit, zoning review, and HOA clearance so your casita stays on schedule and fully approved.
- Timely Final Walkthrough — We perform a comprehensive final walkthrough making sure every aspect of your casita meets our strict standards before you take occupancy.
Across the build, our project tracking app keeps you fully updated — no guesswork, no chasing down answers.
About Us

At Everything Residential & Commercial (ERC)
Here at Everything Residential & Commercial (ERC),
we are more than builders; we are design innovators, turning visions into something real!
Our commitment is to excellence, with our Savage Design Team leading the charge to bring your concepts to life.
As a leader in both contemporary and classic design styles, ERC is not merely a building company; we are creators of environments that align with individual needs.
So, if you’re ready to bring your daydreams into reality, ERC is your trusted dream contractor in Fountain Hills, AZ!
No matter if you’re creating a secluded space for loved ones, a rental-ready ADU for steady cash flow, or a thoughtfully crafted backyard escape, ERC makes the entire process smooth and fulfilling. Casita build slots fill every season fast — claim your no-cost consultation now and secure your project timeline before availability runs out.
Everything Residential and Commercial
1120 W Wagner Dr, Gilbert, AZ 85233, United States
Working Hours
Mon-Fri: 8:00 AM - 5:00 PM Sat-Sun: Closed
(480) 798-7060
Request a Quote
We Will Call You Back
FAQs – Custom Casita Builder in Fountain Hills, AZ
What is a casita, and why should I build one?
A casita is a detached or adjacent dwelling unit on your property. We design and construct casitas to serve as visitor suites, workspace areas, rental units, or personal living quarters for family members. Our casitas increase property value, adaptability, and comfort to your property.
Will you manage the full casita building process?
Yes, we handle everything from beginning to completion. We coordinate design, pre-construction, permitting, building, and final detailing, ensuring a seamless and worry-free experience for our clients.
Is my casita design customizable?
Yes. We partner with you to create a casita that aligns with your vision, lifestyle, and budget. Whether you want a contemporary studio unit or a complete guest residence, we adjust every detail to your needs.
How long will my casita project take in Fountain Hills?
Project timelines can vary depending on square footage, complexity, and permitting requirements. That said, we provide a transparent timeline from the beginning and communicate with you throughout the whole project to ensure transparency and timely completion.
Do you help with permits and local regulations in Fountain Hills, AZ?
Of course, we manage all necessary permits and ensure your casita complies with Fountain Hills zoning laws and building codes. Our expertise helps prevent setbacks and keeps your project on track.
Is it possible to rent out a casita?
Generally, yes. We can plan and construct your casita with rental use in mind. We also guide you area rules and laws so you can make informed decisions about using your space as an revenue-producing unit.
EXCELLENT
Based on 54 reviews
Posted on Google![]()
ElleAnna ChaconTrustindex verifies that the original source of the review is Google.
they did a full kitchen remodel in my home and i was very satisfied with the way everything turned out. they are very knowledgeable and trustworthy. i can tell they wanted me to be 100% satisfied with the remodel and i definitely was! they surpassed my expectations!Posted on Google![]()
Lauren RamosTrustindex verifies that the original source of the review is Google.
ERC is the top of the line. They handle each build with precision, dedication and accuracy while being transparent about the outcome/timeframe. I have had the pleasure of working with both Christian and Randy to help renovate my commercial business and will be contacting them further for any other projects.Posted on Google![]()
Christopher ColemanTrustindex verifies that the original source of the review is Google.
ERC has made the construction process as easy as it can be. The Casita is very beautiful and we're extremely happy with the results!Posted on Google![]()
Steven SpirlongTrustindex verifies that the original source of the review is Google.
We used Everything Residential for a large home addition and RV garage. Our project turned out amazing! They were very easy to work with, and each step moved quickly after getting approved from our city. They were a great team and all of the subs that were used on the project were highly professional and friendly. They had good communication over the course of the project and we would highly recommend them to anyone wanting a professional, 5 star home renovation or addition.Posted on Google![]()
Tonya CrosbyTrustindex verifies that the original source of the review is Google.
They did a large home addition for me and it was incredible! Thank you Randy and ChristianPosted on Google![]()
Mitchell NilanTrustindex verifies that the original source of the review is Google.
The level of knowledge Christian has is amazing, not to mention his team is equally as knowledgeable! Their working environment together and with everyone included is so great! Do yourself a favor and just watch a few of his videos and you will see that these guys are the EXACT group of people you need for your brand new breathtaking new addition. YOU FOUND THE RIGHT PEOPLE FOR THE JOB WHEN YOU GO WITH ERC.build, I promise you that!Posted on Google![]()
Andrew ShlaimonTrustindex verifies that the original source of the review is Google.
Christian was great to work with. Very organized and efficient.Posted on Google![]()
Routhier ResidenceTrustindex verifies that the original source of the review is Google.
These guys came in and took care of everything that needed completed for the sale of our home. I would highly recommend these guys for any of your home needs. Christian and Cody were very professional on time and got things done..Posted on Google![]()
Michelle WennerstrumTrustindex verifies that the original source of the review is Google.
They built a casita for us. The casita turned out better than I could have imagined. Great company to work with. Company communication was top notch, quality of work was 5 stars, entire crew was great, very professional. Highly recommended!Posted on Google![]()
Josh MarquezTrustindex verifies that the original source of the review is Google.
Had to build a back house for laundry and storage and Christian and his team were very clear and easy to work with. Job was done before the deadline and came out perfect. Would recommend for any job of any size!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Services:
Contact Info:
Everything Residential and Commercial
1120 W Wagner Dr, Gilbert, AZ 85233, United States
Hours
Mon-Fri: 8:00 AM - 5:00 PM Sat-Sun: Closed
(480) 798-7060