Adding an ADU: What Homeowners Need to Know

Adding an ADU: What Homeowners Need to Know

Adding an Accessory Dwelling Unit (ADU) can be one of the most useful ways to expand your property. Whether you want additional space for family, a private guest area, a home office, or a potential rental, a well-planned ADU can provide flexibility while adding long-term functionality to your home.

Before construction begins, however, there are several important things homeowners should consider.

What Is an ADU?

An Accessory Dwelling Unit is a secondary living space located on the same property as a primary residence. Depending on the property, design, and local requirements, an ADU may be:

• A detached backyard structure

• An addition connected to the existing home

• A basement conversion

• A garage conversion

• A living space constructed above a garage

• A separate portion of an existing home

Most ADUs include their own living area, kitchen, bathroom, sleeping area, and entrance, allowing the space to function independently from the main residence.

Why Are Utah Homeowners Building ADUs?

ADUs have become an attractive option because they can adapt to a homeowner's needs over time.

An ADU can provide space for aging parents, adult children, visiting family members, guests, or a dedicated home office. Depending on local regulations, some homeowners may also consider using an ADU as a rental.

Instead of moving to a larger property, an ADU may allow you to get more functionality from the property you already own.

Start With Planning

One of the most important parts of an ADU project happens before construction begins.

Every property is different. The size and location of an ADU may be affected by local zoning requirements, setbacks, property lines, building height, parking requirements, utilities, and permitting.

Before finalizing a design, homeowners should determine what can reasonably be built on their property.

Good planning at the beginning can help prevent expensive changes once construction is underway.

Establish a Realistic Budget

There is no single price that applies to every ADU.

The total construction cost can vary depending on the size of the structure, site conditions, design, finishes, utility connections, and whether the ADU is attached or detached.

A complete budget may need to consider:

• Design and engineering

• Permits

• Site preparation

• Excavation

• Foundation work

• Framing

• Roofing and exterior finishes

• Plumbing

• Electrical

• HVAC

• Insulation

• Drywall

• Flooring

• Cabinets and countertops

• Doors and trim

• Bathroom fixtures

• Appliances

• Utility connections

• Landscaping and exterior improvements

Understanding the complete scope early makes it easier to establish a realistic construction budget.

Design Every Square Foot With a Purpose

ADUs are typically smaller than traditional homes, which makes an efficient floor plan especially important.

A well-designed ADU doesn't necessarily need to feel small.

Open living areas, natural light, practical storage, appropriately sized kitchens, and carefully planned bedrooms and bathrooms can make a major difference.

The goal should be to create a space that is comfortable today while remaining useful as your needs change.

Don't Forget About Utilities

Utilities can have a significant impact on both the design and cost of an ADU.

Water, sewer, electrical service, gas, plumbing, and HVAC should be considered early in the planning process.

For detached ADUs in particular, the distance between the new structure and existing utility connections can affect the amount of excavation and infrastructure required.

Identifying these conditions early can help reduce surprises during construction.

Choose Materials With Long-Term Use in Mind

An ADU should be built with the same attention to quality as the primary residence.

Flooring, cabinets, countertops, drywall finishes, doors, trim, fixtures, and exterior materials should be selected based on both appearance and durability.

If the ADU will be used frequently or potentially rented, durable and easy-to-maintain materials may provide better long-term value than selecting finishes based only on their initial cost.

Work With an Experienced Contractor

Building an ADU requires coordination between multiple phases of construction.

Depending on the project, this can include excavation, concrete, framing, roofing, plumbing, electrical, HVAC, insulation, drywall, flooring, cabinets, finish carpentry, painting, and exterior work.

Having an experienced general contractor involved early can help identify potential challenges, coordinate trades, establish a realistic construction schedule, and keep the project moving from planning through completion.

Thinking About Adding an ADU to Your Utah Property?

Millcon Elite Construction works with homeowners throughout Utah to create functional, well-built additions and ADUs.

Our team focuses on quality craftsmanship, dependable project management, clear communication, and building spaces around the needs of each client.

Whether you're considering a detached ADU, attached addition, additional living space, or a larger home renovation, we're ready to discuss your ideas and help determine the next steps.

Ready to start planning your project? Contact Millcon Elite Construction today to schedule a consultation and request an estimate.