The Tree Houses they construct are usually positioned in the corner of a garden or between existing trees; they construct a platform (of any shape) and then place the Tree House on the platform. As descendants of a long line of botanical explorers and horticulturists, Robert and Justin Sergent-Fairley refuse to bore holes into healthy trees for the purpose of a quick route to constructing a Tree House.

If a suitable tree (or trees) is available, they generally incorporate this ( these) into the overall structure; this, they achieve by completely constructing the Tree House around the available tree (trees) or as they generally prefer, building the platform (verandah) of the Tree House around the chosen tree (trees).

Robert Sergent-Fairley recently advised a group of students "that the best way to view a tree was by standing in the branches." "Thus," he said, "if you build a small Tree House around a trunk, apart from creating the necessity for a very large Tree House, all you see is trunk; you do not see the real beauty of the tree. However, if you permit the trunk or the branches to grow through the open platform (verandah) you can sit out, walk around, play or do whatever you wish under the beautiful canopy of the branches and the dappled light of the ever changing leaf structure."

Song of the Scabious Fairy

Like frilly cushions full of pins
For tiny dames and fairykins;

Or else like dancers decked with gems,
My flowers sway on slender stems.

They curtsey in the meadow grass,
And nod to butterflies who pass.

Unless otherwise requested Belsize Landscapes construct their Tree Houses from sawn and treated timber frames; their cladding is 6 inch feather edge boards with rooves of varying (optional) materials (feather edge, roofing felt, wooden shingles, or children style thatch); the whole is screwed together - no nails are used in the construction. All doors windows or shutters can be either squared or with Gothic curves; all windows are constructed from perspex and any overlooking a neighbour's property are covered with a frosted (or similar) film.

Owing to Local Authority regulations, Belsize Landscapes construct their platforms at five feet (1.50 metres) off ground level. The tree house itself normally has walls 5 feet 6 inches high (1.65m) with a pitched or pyramid roof a further 2 feet high (0.60m). Thus, a tall child (or invited adult) can easily walk around inside.

Song of the Wind Flower Fairy

While human-folk slumber,
The fairies espy
Stars without number
Sprinkling the sky.

The Winter's long sleeping,
Like night-time, is done;
But day-stars are leaping
To welcome the sun.

Star-like they sprinkle
The wildwood with light;
Countless they twinkle-
The Windflowers white!