You (Likely) Won’t Need a Permit for KitHAUS’s $38K Backyard Studio

The roughly 120-square-foot prefab is the smallest offering from the California company, which uses an aluminum system to create custom ADUs.

You (Likely) Won’t Need a Permit for KitHAUS’s $38K  Backyard Studio

The roughly 120-square-foot prefab is the smallest offering from the California company, which uses an aluminum system to create custom ADUs.

This studio features wraparound, floor-to-ceiling windows to let in natural light.

Welcome to Prefab Profiles, an ongoing series of interviews with people transforming how we build houses. From prefab tiny houses and modular cabin kits to entire homes ready to ship, their projects represent some of the best ideas in the industry. Do you know a prefab brand that should be on our radar? Get in touch!

About 20 years ago, friends Tom Sandonato and Martin Wehmann had somewhat overlapping careers. "I was working in retail store design at Warner Bros. and Martin owned a retail design-and-build company," says Sandonato. At the time, he had land in Joshua Tree, and was looking for a way to build in the high desert while minimizing environmental impact. They found an engineer who had invented an aluminum construction system, and ended up buying the license.

Using that system, in 2005, Sandonato and Wehmann launched KitHAUS to build "lightweight, modernist modules" that could be used everywhere from suburban backyards to sparsely populated deserts. Since, they’ve shifted their focus to "larger ADU-style modules and smaller, non-permitted studios," Sandonato says. Here’s what they’ve built—and what they’re doing next.

Tell us about the most exciting project you’ve realized to date.

We completed a project in Topanga Canyon of Los Angeles County that combined three of our KitHAUS modules with interconnected decks and pergolas, all overlooking the surrounding mountains. We also recently completed a studio for a photographer in San Francisco, which was very cool!

This studio was constructed in a Seattle backyard, where it can be used for work or recreation.

This backyard studio in Seattle was small enough that it didn’t require permitting.

Photo courtesy of Tom Sandonato

What does your base model cost and what does that pricing include?

The base price on a K3 module is $38,000, plus typically about 15 percent of the final cost to build on site. The K3 module is usually non-permitted, so our team usually handles the installation process, including the concrete  foundation.

The K3 includes all anodized aluminum framing, either clear or black, and all doors and windows are from all-weather architectural aluminum. The model is fully insulated with structurally insulated panels (SIPs) and comes with LED lighting. The entire prefab comes in at less than 120 square feet.

This studio features wraparound, floor-to-ceiling windows to let in natural light.

This studio features wraparound, floor-to-ceiling windows to let in natural light.

Photo courtesy of Tom Sandonato

Where are the prefabs currently available?

A KitHAUS consists of a lightweight, proprietary aluminum framing and locking system, so it can pretty much be carried and assembled anywhere. The team has assembled parts from Brooklyn to San Francisco, and we’re proud to say that the build time for a basic K3 model takes about six days to complete. We’ve finished 200 builds and counting.

We’re currently concentrating on projects in California, from San Diego up through Sonoma and beyond. We do have several completed projects in Seattle, Portland, and a few on the East Coast as well. At the moment, we don’t have plans to expand internationally.

The company recently completed a larger-scale property in Topanga Canyon in Los Angeles.

The company recently completed a larger-scale property in Topanga Canyon in Los Angeles.

Photo courtesy of Tom Sandonato

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