Backyard ADU
A separate home for family, guests or extra income, sized for a backyard.
Explore ADU plansIrontown Modular dealer
Modular ADUs, built for Utah.
Factory-built ADUs and small homes from Irontown Modular, on a schedule you can plan around. One local contractor from your first call to move-in.
Why a modular ADU
A calmer way to add a home.
Stick-built can work. It also puts every trade, permit and weather day on your lot. A modular build moves the house into a factory and keeps the site work moving alongside it.
The crew backlog
A site build waits its turn for framers, electricians and roofers. With modular, much of the construction happens inside a factory, where the work is part of a production schedule.
Cost creep on stick-built
When a home is built in the open, changes and surprises can add up. A factory plan and a written scope give you a clearer picture before construction starts. Your quote confirms pricing and delivery.
Weather delays
Rain, wind and cold can stop work on an exposed site. Modules are built indoors. Site work still follows the weather, but the house itself is not sitting in it.
Managing permits and trades
A modular ADU still needs permits, inspections and site work. Stoneward coordinates the local pieces and works with Irontown's process, so you are not refereeing separate companies.
What are you building?
Three ways an ADU can work.
Start with how you want to use the space. We'll help you match it to the right Irontown plan.
Casita or guest house
A smaller footprint for visitors, a home office or a place for family to stay close without giving up privacy.
See small plans
Small modular home
A compact primary home for a narrow lot, a rural property or a simpler way to build on land you already own.
Compare layoutsHow it works
Five steps, one local contact.
This is the typical Irontown Modular process. Foundation and site work run alongside the factory build, and a project manager is assigned to your project.
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01
Talk it through
Tell us about your lot, your household and how you want the space to work. We'll be straight about what fits.
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02
Pick a plan
Choose from the Irontown plans we sell and talk through finishes. We'll confirm the scope in your written quote.
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03
Feasibility and approvals
We review your lot and the local approval path. The city or county makes the permit decision.
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04
Factory build and delivery
Modules are built indoors in Utah while foundation and site work happen at home. Then they ship to your lot.
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05
Set and finish
Your modules are set, finish work is completed and your project manager stays with the project through the walkthrough.
Featured plans
A few plans to start with.
Every plan is available in several finishes. Square footage and layouts are Irontown Modular's.
Modular vs stick-built
Two ways to build. Different trade-offs.
Both paths can produce a good home. Here is the practical difference, in plain terms.
Modular ADU
Stick-built on site
Design
Modular ADU
A factory plan set with finish selections.
Stick-built
Drawn for your lot and built as work progresses.
Price certainty
Modular ADU
A written quote before construction starts.
Stick-built
Selections, site conditions and changes can move the number.
Carrying costs
Modular ADU
Site work and factory work can run alongside each other.
Stick-built
Trades are sequenced on site, one after another.
Weather
Modular ADU
The house is built indoors. Site work still follows the weather.
Stick-built
Every stage of the house is exposed to the weather.
Every lot and project is different. These are general differences, not a promise about your project. Your approved plans and written quote govern the work.
Licensed Utah residential contractor
A local, licensed contractor is your point of contact. Utah license #14271611-5501 (R100).
Irontown Modular dealer
Authorized to help you choose and order an Irontown plan.
Local project contact
Stoneward stays with you from the first call through finish work.
Your ADU starts with a conversation.
Tell us about your lot, your city and how you want to use the space. We'll help you find a plan worth pursuing.