🏡 Utah's ADU Specialists

Your Backyard.
Your New ADU.

Custom stickbuilt, prefab modular, and garage conversion ADUs built right here in Utah. 50+ homes completed. Get a free estimate with no pressure, no obligation.

50+Homes Completed
3ADU Types Offered
100%Permitted Builds

Get Your Free Estimate

No cost, no pressure. We'll assess your property and walk you through your options.

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Licensed & Insured in Utah
Full Permit & Plan Services
50+ Homes Built
Free Estimates, No Obligation
Stickbuilt | Modular | Garage Conversions
What We Build

Three Ways to Add an ADU

Whether you want a brand-new build or want to convert what you already have, we have the right solution for your property.

🏠

Custom Stickbuilt ADU

Built on-site from the ground up, fully tailored to your lot, your style, and your goals. Maximum flexibility, maximum quality.

  • Fully custom floor plans & layouts
  • Matches your home's architecture
  • Studio up to 3 bedrooms
  • Highest long-term property value
  • All materials sourced locally
🏗️

Prefab / Modular ADU

Factory-built and assembled on your lot, the fastest path to a finished, permitted ADU at a lower cost. Built to the same code standards.

  • 50-70% faster than traditional builds
  • Lower labor costs = better value
  • High-quality factory construction
  • Multiple pre-designed floor plans
  • 50+ modular homes completed
🚗

Garage Conversion ADU

Already have a garage? Convert it into a legal, permitted living space. One of the most affordable ways to add a rental unit or guest suite.

  • Use what you already own
  • Lower cost than new construction
  • Detached or attached garages
  • Full electrical, plumbing & insulation
  • Permitted & inspected from start to finish
Our Work

Built in Utah. Built to Last.

Every ADU we build is permitted, inspected, and finished to the same standard we'd want in our own homes.

Completed duplex with ADU in Utah
Completed Project
Featured Project

Single-Family Home Converted to Income-Producing Duplex

This Utah property was transformed into a fully permitted, move-in ready duplex with a separate ADU unit. The owner now generates rental income from a second unit while still living on the property or renting both sides independently.

From updated windows and fresh landscaping to full interior buildouts on both units, this project is a great example of how the right ADU addition can completely change the value and income potential of a property.

  • Fully permitted duplex conversion
  • Separate entrance for each unit
  • Updated exterior: new windows, fresh landscaping
  • Full interior buildout on both units
  • Ready to rent from day one
Get a Free Estimate for Your Property
Modular ADU being set by crane on a Utah property
Modular ADU Installation Crane-set modular unit, ready for foundation hookup
Custom kitchen interior inside a finished Utah ADU
Chef's Kitchen Interior High-end finishes, custom cabinetry, full appliances
Luxury bathroom with gold fixtures inside a finished Utah ADU
Spa-Style Bathroom Premium fixtures and tile work, fully permitted
Why Utah Backyard ADUs

You're Making a Big Investment. Here's Why We're the Right Partner.

We've built over 50 homes in Utah and we know what it takes to do this right from day one.

🏆

Proven Track Record

50+ completed modular homes across Utah before we ever opened our own doors. That's experience you can count on when it's your money on the line.

📋

We Handle Everything

Design, permits, city approvals, construction, final inspection. We own every step of the process so you don't have to chase anyone down.

🤝

No Pressure, Ever

Your free estimate comes with zero obligation. We show up, assess your property, and give you a straight answer. You decide what's next.

📍

Utah-Based and Committed

We're not a national franchise. We're a Utah company, building for Utah families, and we stand behind every project we complete.

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Move-In Ready Finish

We don't hand off a shell and disappear. Every ADU is completed, inspected, and ready to live in or rent from day one.

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Real ROI for Homeowners

A finished ADU adds significant property value and can generate monthly rental income. We help you understand the numbers before you commit.

Client Reviews

What Homeowners Say

Real feedback from real Utah homeowners who trusted us with their ADU projects.

⭐ Google Review
★★★★★

"Sam walked us through every step of the process. We had no idea how ADUs worked and he made it completely stress-free. Our modular unit was up faster than we ever expected, and the quality inside is outstanding."

MR
Mike & Rachel T. Modular ADU, Salt Lake City
⭐ Google Review
★★★★★

"We converted our detached garage and now we're renting it out for extra income every month. Sam handled the permits, the inspections, everything. I didn't have to make a single call to the city."

JB
Jennifer B. Garage Conversion ADU, Provo
⭐ Google Review
★★★★★

"We built a custom stickbuilt ADU for my in-laws and it turned out better than we imagined. The interior finishes are beautiful and it perfectly matches our home's style. Highly recommend Sam and his crew."

DK
David K. Custom Stickbuilt ADU, Ogden
Sam Lewis, Founder of Utah Backyard ADUs
👋 Sam Lewis, Founder
Meet the Owner

50+ Modular Homes Built. Now Building for You.

After spending years perfecting the craft of modular home construction and completing over 50 homes across Utah, I decided it was time to start my own company. One built on honesty, quality, and actually taking care of the people I work with.

I've seen how confusing and overwhelming the ADU process can be for homeowners. My goal is to make it simple: one call, a free visit to your property, and a clear plan from start to move-in day.

We handle everything: design, permits, construction, and inspections, so you don't have to deal with any of the headaches.

50+Homes Completed
100%Permitted & Inspected
3ADU Types Offered
$0Cost for Your Estimate
Simple Process

How It Works

From your first call to move-in day, we handle everything so you don't have to.

1

Free Site Visit

We come to your property, assess your lot, and talk through your goals, completely free.

2

Design & Permits

We handle blueprints, city permit applications, and all required approvals on your behalf.

3

Construction

Our experienced Utah crews build your ADU on time, to code, and on budget.

4

Move-In Ready

Final inspection, walkthrough, and keys in hand. Start earning rental income or housing family.

Common Questions

ADU FAQ

Utah ADU laws have changed a lot recently. Here's what most homeowners ask us first.

Utah state law (HB 82, 2021) requires most cities to allow ADUs on single-family lots. Salt Lake City, Provo, Ogden, St. George, and most other Utah cities now permit ADUs by right. We'll confirm your specific zoning during your free site visit, at no charge.
100% free, no strings attached. Just fill out the form on this page or give us a call at (801) 960-0103. We'll schedule a time to visit your property, walk through your options, and give you a clear picture of what's possible. You decide what happens next.
A stickbuilt ADU is built on-site from scratch: maximum customization, best long-term value. A modular ADU is built in a factory and assembled on your lot, faster and often more affordable. A garage conversion turns your existing garage into a fully livable, permitted unit, typically the most cost-effective option if you already have a usable garage.
Yes, many of our clients build ADUs specifically to generate rental income. Long-term rentals are allowed anywhere ADUs are permitted in Utah. Short-term rentals (Airbnb, VRBO) depend on your city's specific rules. We can help you understand what's allowed in your area during your free consultation.
Garage conversions can be completed in as little as 2-3 months. Modular ADUs typically take 3-5 months from permit approval. Custom stickbuilt ADUs usually run 5-8 months. Permitting timelines vary by city (usually 4-10 weeks) and we manage all of that for you.
Utah's ADU law removed the owner-occupancy requirement statewide in 2021. You don't have to live on the property to build or rent an ADU. Some cities may still have their own local rules. We'll confirm this for your specific city as part of your free estimate.
Absolutely, that's one of the biggest things we do for you. We handle architectural plans, permit applications, utility hookups, all required inspections, and the final certificate of occupancy. You won't have to deal with city hall at all.
Yes, both attached and detached garages can often be converted into legal ADUs. We'll assess your garage's size, structure, and zoning situation during your free site visit to confirm feasibility and walk you through what the conversion would involve.

Ready to Get Started?

One call is all it takes. We'll come to you, assess your property, and walk you through your options, completely free.

Request Free Estimate → 📞 Call (801) 960-0103