GardenRetreatRooms has changed its name to PlaceHill


Osterley Garden Centre

Windmill Ln, Osterley Ln, Isleworth TW7 5PR, London

Birchen Grove Garden Centre

Birchen Grove, London, NW9 8RY

Sandwich Showroom and Headquarters

Unit 12, Crystal Business Centre, Ramsgate Road, Sandwich, Kent, CT13 9QX

Who we are

At PlaceHill, we are passionate about supplying elegant garden rooms to families across the UK. Long before our founding in 2021, our founders were dedicated specialists in innovative construction and the timber industry.

With our experience, enthusiasm and varying skill sets combined, we are well equipped to design, build and install premium garden rooms that you will not find anywhere else.

What sets us apart

Several qualities put PlaceHill in a different class to our competitors.

The most notable of these is our workmanship and transparency. We are an old-fashioned business, which to us means no hidden costs or unexpected extras. However, we are also modern enough to deliver solid, functional and contemporary cabins that will draw admiration from every passerby.

With our innovative designs and off-site construction practices, we can deliver our sustainable buildings at a fixed cost with impressively short delivery times.


Our mission is to help our customers make their dream garden space a reality. In doing so, they can add an extra dimension to their living spaces without having to pay for a costly and complicated extension. Our customers gain sleek and functional garden rooms that can be individually purposed for an extensive range of needs, whether they need a home office, a playroom or something else entirely.


We are proud to provide our customers with outstanding customer service from start to finish, along with any after-care necessary to ensure you are 100% satisfied with our work. We aim to give our clients an experience that is exciting yet straightforward and stress-free.

Call or Write Us

Call or Write Us

Materials and features

We construct your chosen garden room to fit your desired size and add the bespoke solutions of your choice.

No planning permission: our cabins qualify as permitted development, subject to conditions.

Efficient Installation – our modular design keeps disruption to a minimum. Average installation in 8 days. Minimum construction footprint in your garden.

Floor: standard thickness 200mm, including 100mm insulation.

Wall: standard thickness 140mm, including 50mm insulation. Additional insulation upon request.

Roof: total thickness 150mm, including 100 mm insulation.

Year round rooms. Fully insulated and suited to all weathers.

Double glazed security windows. Smash-proof, excellent heat retention.

Plastered and painted interior finish.

Heating: For most rooms a 1kW heater is enough. We fit a wall mounted electric heater as standard.

Electrical fixtures and fittings included. 

Base: ground screws or concrete depending on the ground surface.

Extra decking. Our standard decking is 600mm decking but we can accommodate any additional decking you require.

Rain gutter.

Eco-friendly thermowood cladding. Colour options: natural unstained, natural stained, dark green, black, grey, white.

All natural wooden flooring.

Rodent protective netting.

Sound proofing: The walls provide extra acoustic insulation. Noise coming from the outside environment and noise escaping the garden room are minimal.