Two-Storey Detachable Flat Pack Container House: Six Over Six in an Olive Grove

Twelve detachable flat pack container house modules, arranged six on the ground floor and six above, standing in a Mediterranean olive grove. The brief was not a cabin and not a site office. It was a small two-storey building that could be delivered as panels, assembled without heavy plant, and — if the lease changed — taken apart and moved again.

The layout: six over six

The building is a simple rectangle, three bays wide and two modules deep on each floor. Nothing is cantilevered and nothing is left open in the structure: the lower modules carry the upper ones directly through their corner castings, so the load path stays vertical and the frame grid lines up from the ground to the roof. Each module measures 6000 mm by 3000 mm with a height of 2840 mm, giving the block a proportion that reads as a low-rise building rather than a container stack.

Keeping to a single module width on both floors is what makes the elevation calm. The vertical frame posts repeat at the same interval on the upper and lower levels, so the joints form one continuous grid rather than two offset ones — the detail that separates a designed modular building from a pile of boxes.

Balcony, staircase and deck

The upper floor is reached by an external steel staircase at the rear corner, so no floor area is given up to internal circulation. That single decision is what turns twelve modules into six lettable rooms upstairs and a full-floor ground level below. The staircase lands on a steel balcony that runs the length of the front elevation, deep enough to sit out on, with a simple vertical bar balustrade in the same anthracite as the frame.

At ground level the deck runs along the front and around the corner, built on a timber frame at the same level as the module floor so the threshold disappears. On a sloping site that is worth more than it costs: the deck absorbs the fall in the ground, and the modules themselves sit level on pre-cast piers without any excavation.

Opening the ground floor

The lower level is the public one, so it is glazed. Full-height aluminium frames fill two bays on the long elevation, with the glazing running from floor to the underside of the frame beam; the upper floor stays solid with punched windows, which keeps the summer sun off the bedrooms and gives the elevation a clear base, middle and top.

Because the glazed bays are a configuration of the standard module rather than a structural change, the opening can be set to the operator's plan — a shopfront, a lounge, a reception desk, or a dining room that opens onto the deck. The insulated panel that would otherwise sit in that bay simply is not fitted.

Colour and material

Two colours carry the whole building: a warm sand colour steel plate on the panels, and anthracite on the frame, window surrounds and balustrade. The frame is left visible and slightly proud of the panel face, so the module joints become the elevation's rhythm instead of a line to be concealed with trim.

Inside, that choice pays off in a different way. A dark frame against a light panel gives the glazing a defined edge, and the interior reads warmer than the flat white of a standard cabin — without any change to the wall build-up, which remains a 50 mm to 100 mm sandwich panel with 0.3 mm to 0.5 mm colour steel plate on both faces.

Services and the rear elevation

The rear wall is the working side of the building: it carries the staircase, the service entries and the smaller punched windows, and it is deliberately the plainest elevation. Plant, storage and the electrical distribution point are grouped there so the front stays clean.

The electrical package is pre-wired to the frame in the factory, with the distribution point brought out to a single connection. On a two-storey block that is the difference between a day of site wiring and a week of it, and it is the part most often underestimated when a buyer budgets a prefabricated container house on unit price alone.

What the project proves

• A two-storey building can ship flat. Twelve modules of 6000 x 3000 x 2840 mm travel in one 40HQ container when the electrical package and floor covering are packed separately.
• No crane pad, no scaffolding. The modules assemble into rigid boxes on pre-cast piers, then the upper floor is landed on the lower one through the corner castings.
• The joints are the design. Aligning the frame grid vertically on both floors is what makes a container block look like architecture.
• It can be taken apart. The frame is bolted and the panels removable, so the building is an asset that can be relocated rather than written off.

This is a design study: the images are renderings of a twelve-module configuration built on the standard detachable flat pack container house system. Bay count, glazing extent, staircase position, decking and colour finish are confirmed on the drawing for each order.