the aneX is a bespoke garden building, a large garden room with bathroom facilities, perfect for when you have guests to stay 



We put your family’s needs at the heart of what we do, so you have a smooth and easy experience throughout your aneX installation.


We’ll build your AneX to the highest standard, complying with the latest set of Building Regulations in England and Wales.


We provide a full turnkey service from start to finish. Our professional staff will support and guide you, handling everything throughout the process from the initial site survey to when you receive your keys.


At Yarnton Buildings, we also create and submit your planning application, provide complete project management throughout the build and ensure your habitable aneX is fully connected to utilities and drainage.

Then, all you have to do is move in . . .


The benefits of a garden living annex are becoming more and more apparent.


They provide a home for your relatives within the garden of your own house.  This can give the perfect balance between care and independence. Our tailor-made structures are robust and well insulated.


As with all of our garden buildings our habitable aneX can also be finely tuned to the specific preferences and needs of your family member.


We like to listen to the things that are important to you and your relatives.  We aim to make this an exciting and rewarding move, one which benefits your family and improves all of your lives.

Features for your garden living annex:

  • Room arrangements that are totally bespoke to your requirements and preferences
  • Bathroom /Shower room/Wet room and WC
  • Kitchenette or fully fitted kitchen area
  • Effective heating to ensure simple control and economy
  • Individual external appearance to compliment or contrast your setting
  • Full planning permission and building regulation services
  • Intercom and security systems
  • Disabled and access facilities
  • Landscaped setting and privacy measures


Other steps along the way…

We have a team of specialists who are some of the best at what they do.  They cover all the steps that you could possibly need in your project for your new space. Such as:

  • Concept management from inception to conclusion
  • Planning advice and application (we have a 100% success record in achieving planning permission)
  • Building Regulation inspections and certification
  • Tree surgery and consultancy
  • Landscape design and architecture
  • Interior design schemes
  • Electronic control, entertainment and communication systems

Whatever the level of advice and expertise you require, we look forward to hearing from you and listening to your ideas.


The most important and popular elements of your project that have the greatest influence on the budget are:

  • Site clearance and preparation
  • Building size and layout
  • External cladding materials
  • Door and window size and configuration
  • Addition of bathroom, toilet and kitchen facilities (and connections)
  • Landscaping features including patios and decks
  • Features such as air-conditioning, integrated window blinds, inbuilt hi-fi, etc
  • Applications for planning consent and building regulations

And there are dozens of other elements that we can include or exclude to suit your needs.



Price list


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All prices quoted include vat


add eXtra room to your home

with one of our  ‘aneX’  garden buildings







Concrete base and foundations

Construction of your new building with structural grade timber

Drainage and electrical trenching and connection

Breather membrane and vented timber wall allowing air to circulate freely between the cladding

External Siberian larch cladding

Upvc French door, 1no rectangular and 1no lozenge window

Fully insulated complete with a ‘warm dec’ roof

Outer roof is covered in a high performance torch on felt with detailed edging

Plastered internally complete with skirting and decoration

Kitchen comes complete with oven/hob, fridge, sink, low and high level units

Shower room comes complete with shower cubicle, wash hand basin, wc and heated towel rail.

2kw wall heater to all rooms

Electrical installation includes spotlighting and double sockets

Laminate floor covering to all living / sleeping areas, tiling to the shower room.


Additional extras

Underfloor heating

Data cable, TV/aerial connections, sockets and external lighting

Independent electrical and water metres

Windows, bi folding and sliding doors

External landscaping

Cement board cladding (fire proof compliant alternative to Siberian larch)

Many other options available to suit your needs...



Price includes 

Project management

Building control liaison and sign off

Planning application, drawings and submission (initial non refundable deposit required for this service)



We provide a full turnkey service from start to finish. Our professional staff will support and guide you, handling everything throughout the process from the initial site survey to when you receive your keys.