Choosing the Right ADU Construction Method

When planning an Accessory Dwelling Unit (ADU), one of the most important decisions you’ll make is whether to build using prefabricated (prefab) construction or traditional stick-built methods. Both approaches offer unique benefits, and the right choice depends on your timeline, budget, property, and design goals.

At Blue Diamond General Contractors, we guide homeowners through every option so you can make the best decision for your project.

What is a Prefab ADU?

A prefabricated ADU is built in a factory and then transported to your property for installation.

Benefits of Prefab ADUs:

  • Faster Build Times – Units are constructed off-site while site prep happens simultaneously.
  • Lower Costs – Factory efficiency helps reduce labor and material expenses.
  • Consistent Quality – Controlled environments minimize weather-related delays and damage.
  • Minimal Disruption – Less on-site construction means reduced noise and inconvenience.

👉 Prefab ADUs are great for homeowners who want a cost-effective, streamlined solution with predictable results.

What is a Stick-Built ADU?

A stick-built ADU is constructed on-site using traditional building methods—framing, concrete, and finishing completed at your property.

Benefits of Stick-Built ADUs:

  • Fully Customizable – Complete design flexibility to match your main home or unique vision.
  • Durable Construction – Built with long-lasting materials suited for your property.
  • Adaptable – Can accommodate challenging lot sizes, slopes, or custom floor plans.
  • Potentially Higher Resale Value – Often viewed as more “permanent” and integrated into the property.

👉 Stick-built ADUs are ideal for homeowners who value customization and long-term investment.

Which Option is Right for You?

When comparing prefab vs. stick-built ADUs, consider:

  • Timeline – Need it fast? Prefab might be better.
  • Budget – Prefab can be more cost-effective, while stick-built may add long-term value.
  • Design Goals – If you want a unique, fully custom ADU, stick-built is the way to go.
  • Property Conditions – Lot size, slope, and local codes may favor one method over the other.

Why Choose BDGC?

At Blue Diamond General Contractors, we specialize in both prefab and stick-built ADUs. Our team will:

  • Assess your property and goals.
  • Provide side-by-side comparisons.
  • Handle permits, design, and construction.
  • Deliver a finished ADU that fits your lifestyle and budget.

Let’s Build Your ADU Together

Whether you choose prefab convenience or stick-built customization, we’re here to make your ADU project smooth and stress-free.

👉 Schedule your free consultation today to explore prefab and stick-built options with Blue Diamond General Contractors.