Modern attached accessory dwelling unit joined to a main home

Professionally designed · fixed price

Add a home to your backyard. Skip the guesswork.

Configure every detail, from footprint to finishes, in our online studio, then get a permit-ready, fixed-price proposal. Delivered in weeks, not years.

100+
ADUs delivered
10–12 wk
typical build
25 yr
structural warranty
Licensed & insured Permit-ready plans Fixed-price contracts Energy-code compliant

Meet the team

What's it like to work with ADU Nation Builders?

Build with confidence alongside our founder, Brian Dere. The story behind the builder.

Your ADU, step by step

A clear path from first click to move-in

No mystery, no runaround. Here's exactly how it goes.

Step 1

Check eligibility

Step 2

Design in the studio

Step 3

We build it

Step 4

Move in

More choices, less stress

We handle the hard parts

Three phases, one dedicated team, from confirming your lot to handing you the keys.

1

Feasibility

First, we confirm your property qualifies for an ADU. Our team reviews your local zoning and rules and digs into your lot's specifics, so you understand exactly what's possible. You'll receive clear, buildable options designed to maximize your space and value, confident decisions from day one.

2

Pre-Construction

Next, we finalize your design and handle the permits for you. From structural engineering and energy-code compliance to finishes, utilities, and city submittals, your dedicated team coordinates everything, with steady communication, a reliable schedule, and a fixed, transparent scope.

3

Build & Warranty

Then we build it right. Our crews manage subcontractors, inspections, quality control, and site protection, keeping you updated at every milestone. After move-in, your backyard home is backed by our warranty, peace of mind for years to come.

Why ADU Nation Builders

Designed well. Priced right. Built to last.

Beautiful, smart design

Choose from a variety of curated models, engineered to maximize natural light, storage, privacy, and comfort, whether for multi-generational living or long-term investment. Our ADUs blend timeless design with practical features, across a range of floorplans, square footages, and personalizations.

Predictable investment & timelines

Skip lengthy custom-design cycles and mountains of uncertainty. Pre-designed plans, curated finish packages, and a streamlined permitting process create a faster, more predictable build with fewer costly surprises.

Site-built quality that lasts

Every ADU Nation Builders home is traditionally site-built to local residential building codes, not prefab, not mobile, delivering durable performance and true property value.

Homeowners love their ADUs

We have nothing but excellence to say about Brian Dere. His professionalism, quality of construction, communication, and timeline are far superior to any other construction company we have worked with!
Duke & Cyrie Wortmann

Questions about your lot?

Talk to our design team.

Not sure where to start, or want to check whether your property qualifies? We're happy to help.

Get your ADU now

Configure your ADU and save it as a fixed-price quote request in minutes. Weeks to a finished home, not years.

Build Your ADU