The M.A.Di. is a prefabricated A-frame house from Italy that arrives on a truck folded flat and opens out like a concertina. Its designer, Italian architect Renato Vidal, says a team of three people can unfold and fix it on a prepared site in about six hours. When it was launched in 2017, prices started at around $33,000 (about €28,000) for the smallest model of roughly 27 square metres (290 sq ft), rising to about $73,000 for an 84-square-metre (904 sq ft) version.
Those headline numbers made the project famous, and they need some context. The six hours cover unfolding and connecting the factory-built shell, not preparing the ground, laying foundations, connecting water and power or getting planning permission. The prices were launch figures for the building package, not for a finished, furnished home with land.
The design is still clever. Below you can follow a M.A.Di. from the factory floor to a finished house, photo by photo, and then read what the six-hour claim really includes, what you get for the money and what to check before buying any folding or flat-pack home.
What the M.A.Di. is
The name is usually explained as short for the Italian Modulo Abitativo Dispiegabile, roughly "unfolding living module". The structure combines cross-laminated timber with galvanised steel, built as hinged roof and wall panels. In the factory, the panels are built, insulated and fitted with doors, windows and much of the wiring and plumbing. The whole unit is then folded into a compact block that fits on a standard trailer.
On site, a crane lifts the block, the roof panels swing open and down into the classic triangle shape, and the floor and walls are locked into place. Larger models add a mezzanine floor under the steep roof. At launch, the basic model was reported to include a bathroom, a kitchen and technical installations such as wiring and plumbing; an extra staircase was listed at about €2,000.
The company also promotes the house as earthquake-resistant: it was first conceived as quick-to-deploy housing for earthquake zones, and launch coverage said it carried the anti-seismic certification required in Italy. Whether it meets the building and seismic rules where you live depends on your country, your local authority and your site, so that claim needs checking with a local engineer.
From factory to site, step by step
Inside the factory, the timber frame is clearly visible: pale engineered-wood floors and walls, with the ribbed outer roof panel and its waterproof membrane already attached. Building most of the house indoors protects materials from rain and makes quality easier to control, which is one of the main arguments for prefabrication.
Folded flat, two M.A.Di. modules travel on a single articulated trailer branded with the company's name. Transport is a big part of the appeal: a compact load means ordinary road haulage rather than the special escorts some wide prefabricated buildings require.
On site, a truck-mounted crane lowers the folded block onto a prepared concrete pad fitted with steel beams. Workers in hard hats guide it into position. This photo shows the hidden work behind the six-hour claim: the base had to be poured, levelled and cured before the house arrived.
Halfway through the unfolding, the roof panels rise like the covers of a book being opened. The crane takes the weight while the crew controls the hinges. This sequence was photographed on a hillside site in Italy, with mountains in the background.
A second assembly, apparently a public demonstration in a park, shows a dark-roofed module opening beside the delivery truck. Demonstrations like this one helped the project spread on social media, because the transformation is easy to film and dramatic to watch.
The video below shows the full sequence in fast motion, from the folded block on the truck to a finished A-frame.
The finished houses, outside and in
A completed model with a dark slate-style roof and a fully glazed gable end. The large glass front and the triangle shape are the house's signature look, letting light deep into the open interior. Skylights in the roof panels add more light upstairs.
Another finished house clad in white horizontal boards, with a front door and three windows set into the gable. Cladding is one of the choices buyers can make, and it changes the look from modern cabin to something closer to a traditional Alpine chalet.
At night, a small version clad in open wooden slats glows from inside. The slatted screen gives privacy while letting light through, and shows how the basic frame can be finished very differently.
A computer rendering shows two larger M.A.Di. homes side by side, with balconies on the upper floor, sliding glass doors and solar panels set into the roof. Renderings like this illustrate the off-grid options the company advertises: solar power, greywater systems and LED lighting.
This rendering of an interior shows the bright, open living space created by the sloping walls, with built-in shelving and a full-height window at the end. The sloping walls are the trade-off of any A-frame: dramatic height in the middle, less usable floor space at the edges.
A second interior rendering pairs a wood-panelled wall with a corner sofa, a round dining table and a white staircase leading to the upper level. Furniture and upgraded finishes like these are not part of the basic price.
What the six-hour claim really includes
Six hours is the time to unfold and connect the shell on a site that is already prepared. Before that, the ground needs surveying, a base needs building (the company says the house can sit on lighter foundations rather than a full concrete slab, but something level and engineered is still required), and utilities need to reach the plot. After it, the house needs final connections, inspections and fitting out. Realistically, the project is measured in weeks or months, even if the dramatic part takes a single day. The maker quoted a delivery time of up to 60 days after final drawings are approved.
Price, sizes and what to check before buying
The launch prices covered the building itself, delivered in its basic specification. On top of that, buyers should budget for land, permits, foundations, crane hire, utility connections, interior finishing and furniture, and any taxes or import costs if the house is shipped abroad. Prices quoted in 2017 are also unlikely to match today's (the maker's own site now warns that prices in older press articles may be out of date), so check the current figures directly with the company.
Before buying any folding, flat-pack or modular home, it is worth asking a few questions:
- Is the design approved under local building codes, and who signs off on it?
- Will a mortgage lender or insurer accept it as a permanent dwelling?
- What exactly is included, and what does the full installed cost come to?
- How does it perform on insulation, fire safety and, where relevant, earthquakes?
- Can it be folded and moved again, and what does that cost?
Why folding houses keep catching the eye
The M.A.Di. belongs to a wider movement towards factory-built homes that are quicker to put up and easier to transport, from emergency shelters to backyard cabins. Its folding mechanism is not the only way to get there, but it is one of the most photogenic, and it shows how much of a house can be finished indoors before it ever reaches the land. For another fast-build concept, see our piece on 3D-printed housing and what a rapid build claim includes.
Sources: M.A.Di. Home (official site); ArchDaily: Italian architect designs folding house that can be built in 6 hours; RIBA Journal: Folding home goes up in hours; World Economic Forum: An Italian architect has designed an eco-friendly flat-pack home; Italian Design Institute: The foldable house that can be built in 6 hours. Photos and renderings: M.A.Di. / Renato Vidal.
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