🏡 Utah's ADU Specialists

Your Backyard.
Your New ADU.

Custom stickbuilt, prefab modular, and garage conversion ADUs built right here in Utah. Founder-led by a 50+ ADU veteran. Get a free estimate with no pressure, no obligation.

50+Built by Founder

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.

✅ We got your request! We'll be in touch within 1 business day to schedule your free site visit.

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.

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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

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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

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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 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.

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Proven Track Record

Our founder personally led 50+ ADU projects across Utah as Head of Sales and Project Manager at a regional builder before launching this company. That's hands-on experience you can count on.

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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.

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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.

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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.

Why You Can Trust Us

A New Company. Built on 50+ ADUs of Experience.

Utah Backyard ADUs is a brand-new company, but the experience behind it isn't. Here's the honest story of who's actually building your project.

🏗️ Founder Track Record

50+ ADUs Built

Sam Lewis spent years as Head of Sales and Project Manager at a regional ADU builder, personally leading 50+ ADU projects across Utah from first call to final inspection. Same crews, same suppliers, same standards, now under direct ownership.

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Hands-On, Not Hands-Off The founder runs every project personally

✅ Verified Credentials

Licensed & Insured

Licensed Utah General Contractor, fully insured, and bonded. Every project permitted, inspected, and built to code, with no skipped steps and no paperwork gaps when it's time to refinance, sell, or rent the unit out.

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Permits & Inspections In-House You won't have to call the city, ever

🤝 References on Request

Talk to Past Clients

Want to hear from real Utah homeowners Sam has built ADUs for in his prior role? We're happy to connect you with past clients from completed projects so you can ask them anything, before you commit a single dollar.

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Just Ask References available during your free estimate

👋 Sam Lewis, Founder

Meet the Owner

50+ ADUs Behind Me. Yours Could Be Next.

For years I worked as Head of Sales and Project Manager at a regional ADU builder here in Utah, where I personally led 50+ ADU projects from the first phone call all the way through final inspection. I learned every part of this process, what works, what doesn't, and where homeowners get burned.

I started Utah Backyard ADUs because I wanted to do this my way: honestly, hands-on, and with real accountability to the people I work with. No middlemen, no overpromising, and no disappearing once the contract is signed.

One call gets it started. I'll come out personally, walk your property, and give you a clear, no-pressure picture of what's possible.

50+Built by Founder

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.

Free Site Visit

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

Design & Permits

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

Construction

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

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.

Is an ADU legal on my Utah property?▼

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.

How do I get an estimate? Is it really free?▼

100% free, no strings attached. Just fill out the form on this page and we'll reach out within 1 business day to 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.

What's the difference between stickbuilt, modular, and a garage conversion?▼

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.

Can I rent out my ADU for extra income?▼

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.

How long does it take to build an ADU?▼

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.

Do I need to live on the property?▼

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.

Do you handle permits and inspections?▼

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.

Can you convert my garage even if it's attached to the house?▼

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.

Your Backyard.Your New ADU.