This Floating, Off-Grid Prefab Can Be Assembled in Just Two Days

By Kathryn M. / Published by Dwell
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Ready for life on land or water, the net-zero LilliHaus is a plug-and-play prefab by SysHaus.

The Brazilian firm SysHaus recently added a new member to its family of sustainable prefabs. Known as the LilliHaus, the off-grid dwelling measures 10' x 39', making it the largest of the firm’s three plug-and-play structures. With its self-contained, minimalist design, the tiny home is ready to pop up on land or water.

An aerial view of a WaterlilliHaus prefab floating on a lake near Joanópolis, Brazil, about two hours north of São Paulo. SysHaus also offers two smaller versions: the MiniHaus and the NanoHaus.

Courtesy of SysHaus

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While the design is suitable for life on land, the owners of this one decided to mount it on a floating catamaran, which can be moored to a buoy or sailed at speeds of up to four knots. The tiny house, called Altar, is currently offered as a rental on Airbnb.

Courtesy of SysHaus

The home is able to accommodate an off-grid lifestyle, although it can be hooked up to the grid as well. "Solar panels generate energy that is accumulated in a battery system and used when necessary at 12 or 110 volts," says the firm. "All black water and gray water pass through an aerobic and biological treatment station, including a three-phase biodigester system, before returning to the environment in conditions of physical, chemical, and bacteriological purity. For drinking water, the water surrounding the house is also purified and used."

The home’s minimalist interior features light hardwood floors and wood-clad walls and ceilings. A fireplace in the living room creates a cozy atmosphere.

Courtesy of SysHaus

Just as with SysHaus’s other designs, the LilliHaus is made from 100% recyclable materials. Light, refurbished hardwoods run throughout, while floor-to-ceiling windows draw in ample natural light—and provide an opportunity to wake up to breathtaking water views.

Sliding glass doors open the bedroom to the wraparound deck while framing water views.

Courtesy of SysHaus

Innovative engineering and smart technology are also central features in the design. "LilliHaus has openings in the floor and ceiling, creating a natural ventilation system that allows hot air to escape out the top and fresh air to come in underneath the house," says the firm. "It provides a continuous flow of air and a great thermal sensation. [The entire system] can also be controlled remotely, offering security and the ability to monitor household energy consumption."

A skylight in the large, fully functional bathroom ushers in natural light.

Courtesy of SysHaus

A large deck doubles as a dock for lounging and diving into the surrounding lake.

Courtesy of SysHaus

Shop the Look

Sossego Gisele Lounge Chair

Finished by Brazilian artisans and delivered to you in 7-14 days. Lounge chair : 34.9" H 27.6" W 32.8" D 16.5" SH 21.3" Designed by Aristeu Pires


Dougan Clarke Tuuci Ocean Master Rectangular Shade

Protect yourself from elements but keep your view with the Tuuci Rectangular (2012), which is more horizontal than traditional dome-shaped umbrellas. Dougan Clarke, a consummate sailor who spent over a decade working with sails, rigging and boat design, knows what will stand up to sun, rain, salt and wind, and he designs his shades accordingly. This shade system is easy to use and maintain but constructed of replaceable marine-grade components to ensure a lifetime of serviceability. It features a clever cam cleat and pulley system to raise and lower the shade with ease. “I sought to redefine what was previously known as an umbrella,” explains Clarke. “The resulting shade sculptures embody both form and function.” As with other shades, keep it in a closed position during storms and when not in use. DWR is not responsible for accidents or damage caused by misuse or weather. Commercial quality. Made in U.S.A. Photo Courtesy of Design Within Reach


Snowe Beach Towel - Shady Stripe

When the sun's brightest, we all crave a little shade. Our Shady Stripe Beach Towel features bright white Breton-chic stripes against a shadowy background of greys or slate blue. Luxuriously oversized and deliciously fluffy, it's the perfect backdrop for pool days, beach naps, and whatever else you're getting upto under the sun. Photo Courtesy of Snowe


Each prefab is sent to its location completely ready and finished, and units can be assembled in just two days. All of the furniture and equipment are also included.

Courtesy of SysHaus

WaterlilliHaus floor plan

Courtesy of SysHaus

WaterlilliHaus section

Courtesy of SysHaus

WaterlilliHaus axonometric diagram

Courtesy of SysHaus

The model shown here is currently available for rent on Airbnb.

Related Reading:

14 Floating Homes That Make a Strong Case For Waterfront Living

How to Build a Floating Home

Project Credits:

Architect of Record: SysHaus / @sysHaus.

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