Choose From Six Models
Our prefab 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.
Accessory Dwelling Units (ADUs)
Every kit home model offered by Mighty Small Homes can become your perfect ADU. Easily build a new mother-in-law suite, office, studio, or rental on your property.
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Versatile Styles and Layouts
Customize your floor plan for any kit from Mighty Small Homes to fit any space on your property as an accessory dwelling unit.
Two-Story 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.
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, you can be under roof in 1-2 days.