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Bespoke Living AnnexesAward-Winning Designs15 Year WarrantyOver 18 years’ experience5 Star ReviewsFully Bespoke or Straight to SiteFriendly, Flexible and Capable ServiceComplete turnkey service — Design, Planning, BuildingYour Life, Your Choice, Your HomeSafe, Secure and Trusted
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Holiday cabin project · SIPS Garden Rooms, Dorset

A wedge-shaped holiday cabin in Dorset by SIPS Garden Rooms

The Nest, a holiday cabin for two near Milton Abbas in Dorset, shows how SIPS Garden Rooms take SIP panels well beyond the usual rectangle.


Published 16 October 2026 · 2 minute read · Written by The Garden Room & Annexe Guide

Aerial view of The Nest by SIPS Garden Rooms, a wedge-shaped holiday cabin narrowing to a point among the trees
SIPS Garden Rooms  The Nest, Dorset

Most garden buildings are rectangles, and SIP buildings especially so, because the panels are rectangular forms themselves. SIPS Garden Rooms design and build SIP projects that break from that, and The Nest, a holiday cabin for two near Milton Abbas in Dorset, is one of them.

Seen from above, The Nest is a wedge, wide at the end that opens onto the deck and narrowing to a point among the trees. It stands on Hewish Farm, a working farm, and is let as part of The Bide.

The shape

A wedge among the trees

The cabin sits at the edge of a copse on sloping ground, raised on posts so the floor stays level as the land falls away beneath it. The walls meet at angles rather than square corners, and a single roof slopes across the whole plan, so the building sits in among the tree canopy rather than in a cleared rectangle in front of them.

Side of The Nest by SIPS Garden Rooms, clad in dark shingles and raised on posts above sloping ground
The side  raised on posts above the slope
Open door at the wide end of The Nest by SIPS Garden Rooms, leading onto a deck among the trees
The wide end  opening onto the deck
SIPS Garden Rooms

Panels cut to the design

Structural insulated panels are made in a factory, with the structure and insulation in one panel, and they are cut to the design before they reach site. That is what makes angled walls and an unusual roofline possible. It takes careful design and accurate setting out, since every panel and junction is different.

The same skill is useful in an ordinary garden. Where a boundary runs at an angle, a rectangular building either leaves unusable corners around it or has to be made smaller to fit. A building shaped to the boundary can use the ground that is there.

A unique holiday experience

The owners’ choices

The finishes were the owners’ choices. Outside, they chose small overlapping shingles in a single dark colour, carried through to the window frames, and a deck with an outdoor bath set into it and a net hammock. Inside, the walls continue the same dark palette, and the cabin is fitted out for two, with a king-size bed beside a large picture window looking into the copse, a shower room and a small kitchen.

Deck at The Nest by SIPS Garden Rooms, with an outdoor bath set into the boards, a net hammock and a table
On the deck  an outdoor bath and a net hammock
Inside The Nest by SIPS Garden Rooms: dark walls, a bed facing a drop-down screen, and windows into the trees
Inside  fitted out for two
Corner picture window in The Nest by SIPS Garden Rooms, with a small table and stools looking into the copse
The picture window  looking into the copse

You can see the finished cabin, and book a stay, on The Bide’s website.

Working with SIPS Garden Rooms

Turnkey or shell

SIPS Garden Rooms offer two ways to build. On the full turnkey service they handle the project from design and planning approval through the build on site, the exterior and interior finishes, and the connections to the mains. Alternatively, they design and put up a weathertight shell, and the client finishes it with their own trades.

Planning something unusual?

Learn more about SIPS Garden Rooms

SIPS Garden Rooms design and build bespoke SIP garden rooms, annexes and holiday cabins across the south of England and Wales, including buildings shaped well beyond the usual rectangle. To discuss your own project with Quentin, visit www.sipsgardenrooms.co.uk, call 07866 666 011, or email Quentin@sipsgardenrooms.co.uk.

Visit SIPS Garden Rooms More SIPS Garden Rooms projects Book a stay at The Nest
More projects like this Garden bedrooms Holiday pods
Read the guides What garden rooms cost Permitted development

Published 16 October 2026 · Photographs courtesy of SIPS Garden Rooms.

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