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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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Annexe project · AMC Garden Rooms

One-bedroom annexe by AMC Garden Rooms

A 9.5m x 6m L-shaped annexe in Hemel Hempstead for a disabled relative — its own front door and hall, a bath as well as a shower, and even a cat flap — built under the Caravan Act.


Published 9 April 2024 · Updated 23 September 2026 · 2 minute read · Written by The Garden Room & Annexe Guide

The exterior of the one bedroom annexe has been clad in Thermowood
AMC Garden Rooms  one-bedroom annexe, Hemel Hempstead

This recent project by AMC Garden Rooms demonstrates how a garden living annexe can create a comfortable home, tailored to your lifestyle. This spacious one-bedroom annexe contains all the essentials for comfortable, independent living, including its own front door, a welcoming entrance hall, and even a cat flap.

AMC Garden Rooms managed the entire project for their clients, from the initial design concept to the final connections to mains services. The annexe was constructed under the Caravan Act, with the AMC Garden Rooms team also handling the process of obtaining a Certificate of Lawfulness for their clients.

Designed for a family in Hemel Hempstead, this garden living annexe was created for a disabled relative who wished to live close to their family while maintaining a significant level of independence.

At a glance

  • Size: 9.5m x 6m inside, L-shaped — an entrance hall, a large kitchen-living room, a bedroom with garden views and an en-suite with a bath and shower.
  • Built for: a disabled relative who wanted to live close to family in Hemel Hempstead while keeping their independence.
  • Route: the Caravan Act, with AMC Garden Rooms obtaining the Certificate of Lawfulness.
  • Outside: vertical Thermowood on the prominent walls, Cembrit cement fibre board on the rest, a deep hardwood deck linking the two wings with room for a table and chairs.
  • Company: AMC Garden Rooms — based on their Clarity range and customised; design, groundwork and all mains connections.

Part of our one-bedroom annexe guide →

A self-contained annexe
in your garden
No planning permission
required in most cases
Kitchen, bathroom & bedroom
— a home from day one
Fully fitted & insulated,
built in weeks
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Layout

9.5m x 6m internal footprint

The annexe boasts an internal dimension of 9.5m x 6m. Its accommodation is arranged in an L-shaped configuration, with a deep hardwood deck linking the two wings. This deck is sufficiently spacious to fit a small table and chairs, allowing the owner to sit outside and enjoy the garden, if they wish.

The floor plan for this one bedroom living annexe by AMC Garden Rooms
The floor plan: entrance hall, kitchen-living room, bedroom and en-suite around a hardwood deck.

This project illustrates how a garden living annexe can be designed with its own front door, in this case, opening into a spacious entrance hall. Having a day-to-day door and an entrance hall, like this, is advantageous, as it means you and your visitors not forced to go directly from garden to sitting room.

The annexe’s design is based on the Clarity range by AMC Garden Rooms. As with every project they work on, selecting a range serves just as a starting point, as the size, layout, and finishes are customised to meet your specific needs.

The open plan kitchen living has a spacious feel in the AMC Garden Rooms annexe
Kitchen-living room

The floorplan has been designed to create a large kitchen-living room, featuring a well-equipped kitchen and a spacious living area with garden views, thanks to the arrangement of windows and the sliding doors on the front elevation.

The bedroom also offers garden views – the large window creates a light, airy room. The annexe features high-specification plastered and decorated walls and ceilings throughout. Each room is fitted with LED downlights recessed into the ceilings.

The bedroom in the AMC Garden Rooms annex has views of the garden
The bedroom  garden views

A well-specified en-suite bathroom is located behind the bedroom. AMC Garden Rooms customises the bathroom’s specifications to suit your preferences and requirements. In this case, the customisation included the installation of a bath with a shower. AMC Garden Rooms also managed the groundwork and connections for water, waste, and electrics for both the bathroom and kitchen as part of their turnkey service. This ensures that the annexe is ready to use as soon as the installation team departs.

The bathroom specification includes a bath. AMC Garden Rooms handled the connections to the mains services
The en-suite  a bath with a shower
Outside

Low maintenance exterior finishes

The garden living annexe is designed to be low maintenance. Externally the most prominant walls are clad with vertically fixed Thermowood, a softwood timber treated at high temperatures to alter its structural integrity, making it highly durable. Thermowood has a lovely honey colouring and an attractive grain pattern.

The less visible walls are finished with Cembrit, a cement fibre board known for its robustness and dimensional stability. Cement fibre boards are not prone to rot or fungal attack, offering a long, maintenance-free lifespan.

Planning something similar?

Learn more about AMC Garden Rooms

To discover more about AMC Garden Rooms’ living annexes, visit this section of their website. Alternatively, you can speak with the AMC team by calling 01480 277 441 or emailing hello@amcgardenrooms.co.uk.

Visit AMC Garden Rooms More AMC Garden Rooms projects
More projects like this One-bedroom annexes Annexes 55 sqm and above
Read the guides Garden annexes: the complete guide What an annexe costs The Caravan Act route Granny pods

Published 9 April 2024 · Photographs courtesy of AMC Garden Rooms.

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A self-contained annexe
in your garden
No planning permission
required in most cases
Kitchen, bathroom & bedroom
— a home from day one
Fully fitted & insulated,
built in weeks
Based in Brighton & Hove,
building across England
Explore annexes →
Visit the Modern Garden Offices website

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A self-contained annexe
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Kitchen, bathroom & bedroom
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built in weeks
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