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Versatile Styles and Layouts

Customize the floor plan for any kit from Mighty Small Homes to fit on your property as an accessory dwelling unit.

View Our Floor Plans

Choose From Six Models

Our prefabricated ADU kits come in six different designs. Select your favorite model, then customize the layout and add your choice of windows, doors, porches, lofts, and more.

Photo of a blue Carriage House

Two-Story ADU Kits with a Garage

Need an ADU that can store your vehicles? Our Carriage model features an apartment above a garage, making it a popular choice for homeowners who want extra storage space.

More Space, Income and Savings

Whether you plan to build a new short-term rental, in-law suite, pool house, or workspace, any of our high-efficiency kits can be customized to match your vision for an ADU.

illustration of how the insulation in structural insulated panels of Mighty Small Homes prefab house kits delivers energy efficiency for home builders

Efficiency is Built-In

Our prefabricated ADU kits are 2-3 times more energy-efficient than traditional, stick-built ADUs – and stronger. You can expect to save up to 60% on your energy costs.

Easy to Build Yourself

Building our house kits as accessory dwelling units on your property is quick and easy. If you have basic carpentry skills and some handy friends, your kit can be under roof in 1-2 days.

Get A Free Estimate

If you’d like a more detailed estimate, just click below and we’ll have a representative get in touch.

Contact Us for a free estimate