Two-storey knock-down house with internal stair, WL series, 3.00 × 6.00 m, 36 m² usable

Two-storey knock-down house with internal stair, WL series, 3.00 × 6.00 m

The WL model stacks two 3.00 × 6.00 × 2.69 m units for 36 m² of usable floor. What sets it apart is that the staircase sits inside the building rather than being bolted to the outside. The facade stays clean and reads as a single house, with no external steel stair frame, and you move between floors without stepping outside into sun or rain.

How it differs from the external-stair model

• Stair inside the house, with a white safety railing around the floor opening upstairs
• No need to step outside to move between floors — better for daily use and wet weather
• Cleaner exterior with no stair or balcony structure attached outside
• Front awning between the floors, shading the ground-floor entrance
• The trade-off is the floor area given over to the stair opening

Specification

• Insulated sandwich panel walls and roof in grey, on a black painted steel frame
• Sliding glass door on the ground floor, sliding windows on both storeys
• Electrical system ready to use, with ceiling lights and power outlets
• Extractor fan for heat and odour
• Vinyl tile flooring, easy to clean
• Internal door dividing the space
• Front awning

Where it fits

• Houses and resorts that should look like a real building, not stacked units
• Project offices with reception below and working space above
• Daily use where an outdoor staircase would be inconvenient
• Small plots that need twice the floor area