Shipping container modified and converted into living accommodation. The concept involves shortening a 12-metre shipping container to create a cube-shaped home of just under 20 m², so as to avoid the need for a building permit, a simple prior declaration being sufficient. The unit offers a pleasant space with a kitchenette and a functional bathroom with WC and shower, finished to a high standard. Multiple uses: extension when living space is lacking, accommodation for an elderly parent while preserving their independence, or generating income as a student studio or holiday rental. Presented as the simplest quality solution to implement, both administratively and technically.