ADU Design for Utah Homeowners
Detached backyard units, garage conversions and basement apartments, designed to fit your lot and shown in full 3D before construction begins.
More Space for Family, Guests or Rental Income
An accessory dwelling unit adds a complete, independent living space to your property. It can house a family member, welcome long-term guests, provide a private home office or create a source of rental income.
We design ADUs that make the most of your lot and complement your existing home, with every room planned and reviewed in 3D before you build.
A Complete ADU Plan Set
Every ADU project includes the drawings your builder and permit office need, whether you are building new or converting existing space.
- Site plan showing placement on your lot
- Floor plans and exterior elevations
- On-site measuring for garage and basement conversions
- 3D model with a shareable walkthrough link
- Electrical layout and design notes
- Structural engineering coordinated as needed
From First Conversation to Final Plans
Free Consultation
Discuss how you plan to use the ADU, your lot and your budget.
Site Review & Measuring
We review the property and measure any existing space being converted.
Design & 3D Review
Refine the layout together and walk through the unit in 3D.
Final Plan Set
Engineering, electrical and design notes, ready for your builder.
Types of ADUs We Design
Detached Backyard Units
A standalone home on your property with its own entrance
Garage Conversions & Apartments
Living space within or above a new or existing garage
Basement Apartments
A private suite within your existing home
Mary A. · Pool house design
ADU Design FAQ
What types of ADUs do you design?
We design detached backyard units, garage conversions and apartments, and basement apartments, as well as related outbuildings such as pool houses.
How much does ADU design cost?
At Vizzi Design, ADU, detached cottage, and garage apartment design fees typically range from $2 to $3 per square foot, depending on project complexity (with a small-project minimum). Your first consultation is free, and you will receive a clear fixed-fee written quote for your project before work begins.
Can you convert my garage or basement into an ADU?
Yes. We measure the existing space on site and design the conversion around it, so the plans reflect your home exactly as it is today.
Are ADUs allowed in my city?
ADU rules, such as size limits, setbacks and parking, vary by city. We will review the requirements for your property during your consultation.
Can I see the ADU before it is built?
Yes. Every project includes a 3D model and a walkthrough link, so you can explore the unit before construction begins.
Plan Your ADU
Your first design consultation is free, and ADU design plans typically range from $2 to $3 per sq. ft. depending on project complexity (with a small-project minimum). Tell us about your property and how you would like to use the new space.