An impressive space without being too imposing and still sitting within permitted development*. This versatile size allows for many functions – a kids’ games room, office space, a meeting room, or a stylish guest bedroom and shower room. We offer two sizes of a Bonni Medium, both available with a flat or pitched roof.

Medium Pitched - D 3.7 x W 4.9 x D 4.0m
Medium Flat - D 3.7 x W 4.9 x D 2.4m
Medium+ Pitched - D 3.7 x W 6.2 x D 4.0m
Medium+ Flat - D 3.7 x W 6.2 x D 2.4m

*Read more about planning here

  • Installation of the ground screws for Bonni base

    A corrugated steel roof which can be left in its natural form or painted in a choice of colours from the Bonni palette

    Exterior cladding in raw oak or painted in a choice of colours from our Bonni palette with the option of vertical, horizontal or feather edge timber
    OR
    Corrugated steel to match the roof which can be left in its natural form or painted in a choice of colours from our Bonni palette

    Optional mezzanine for Bonni medium and medium+ pitched

    2 pairs of handmade double glazed hardwood casement doors, a set of bi-fold doors or 1 pair of double doors and a medium round window

    A small round window for the pitched Bonni

    A large round window for the Bonni Medium+

    2 raw cast brass exterior lights

  • Solid oak floorboards in natural finish

    Electric underfloor heating

    Painted V grooved panelling

    2 brass wall sconces with enamel or fabric shade

    A handmade terracotta pendant

    5 double sockets

    1 switch

  • Personalise your Bonni with our range of Bonni Bits. Choose any extras you’d like to suit your space, and we’ll source and install for you.

Click below to download our Medium and Medium + floorplans.

Our Bonni palette has been carefully chosen to work in harmony with nature. Our earthy warm tones give a sense of grounding and authenticity, our gentle shades of green offer serenity and calmness, and our more vibrant, playful colours inject some vitality and fun. Enjoy creating, now is the time to make your Bonni your own!

We have carefully selected the very best materials to craft our Bonnis and they are designed to look beautiful, stand up to the elements and age gracefully. Choose from corrugated steel or timber, in vertical or horizontal design, left in its natural form or painted in a colour from our Bonni Palette. Whether your Bonni stands alone in its beauty or harmonises with its surroundings is for you to decide!