Garden Annexe Prices July 2026

What a completed annex price includes

Our completed annexes are all ready to move into. Please note self-build kits are available at massive discounts.

Built annexes can include*:

• Flexible layout - design your ideal layout - simply tell us what you need designed
  
• A warm, comfortable environment for you or your loved ones - extremely well insulated walls, ceilings and floors
  
• Low maintenance, smart windows - double-glazed UPVC windows and external doors
  
• Modern interior - plastered and decorated interior
  
• Kitchen fitted - kitchenette with hob, oven, fridge 
  
• Shower room - fitted Shower room with shower, toilet and basin
  
• Modern exterior -  low maintenance external cladding
  
• Electics done - all internal ceiling lights, plug sockets and hidden electrical cables
  
• Plumbing done all internal pipework complete and connected
  
• Weatherproof, low maintenance and resliliant external finishes, including guttering 

Annex optional extras:

• Planning help from start to finish if you'd rather an expert did it
  
• Groundworks including running services and connecting them externally
  
• Your choice of kitchen & bathroom, rather than our standard units
  
• Airconditioning - for heating and cooling
  
• Rooflights / skylights - let in extra light year round for a spacious, modern feel
• Kit only options at massive discounts - made to your design, or kit and partial build options if you're a self-builder

*NB Please see your written quotation for what is included to make sure the specification is as you want it. 

Our friendly, expert team can price anything from a full build annex, through to a self-build kit. To find the self-contained garden annex cost, click on the building models below for further details or call to speak with a real human, straight away.

You can have any design you require, as your annex building will be made to order
Whether you're after a kit to do it yourself, or a fully fitted granny annexe, simply let us know your requirements, for a free quotation, without any obligation on your part. Prices on the page are indicative and assume foundations and services are in place (this can be done for you). A full, written quotation will be provided on request,  designed to your exact needs. 

Planning made easy...
Our team works in association with experienced, cost effective and independent planning consultants, for annex planning permission, if you need this service, too

'Self build annexe' kit only options are available at massive discounts - ask for details.

We can also install suitable foundations and connect to existing services for your annex building - charges for which can be assessed often over the phone without obligation on your part (click here to contact us) or during a site survey, as appropriate. Please note that building regs stipulations can vary between councils and can cause extra costs to be incurred if building regs require this.

Please note that you can have any layout and style you need - simply ask for your personalised, free, no obligation quotation.

Other costs.

Here are a list of other costs that you will need to take into account. They are difficult to define in an exact price, as they will vary depending upon each situation. Additional costs  include:

• Running water supply to and from the main home to the annex
• Running armoured electric cable to/from main home to annex
• Running waste water pipe from annex to mains drainage
• Installing foundations
• Bespoke kitchen and bathroom fixtures and fittings
  
• Tiling to shower room and kitchen
• Heating and or cooling options, depending upon requirements
• Any professional fees that may apply to gaining any permissions or other fees related to regulations if applicable. To discuss planning issues for your site click here.

All of the above we can price for you as required. We strive to make our range the cheapest way to build a granny flat in the  uk, without compromsing on quality.

Self build annex kits

'Self Build' Kit only option available at massive discounts - ask for details.

Our annex kits can be supplied as you specify, so this is a very flexible system.

Self-build annexes have become increasingly popular where people need garden accommodation on a budget and are building themselves, have relatives or friends in the trade, or prefer to use local trades that they already know, so that they can manage the build and external and internal finishes themselves.

Self-build Prices

Prices of self-build kits are based on your own design and specification, so - ask for prices and details .

How do self build kits work?

Kits are designed to order, cut to size and premade at the factory. They are assembled to make sure everything is complete and ready to rebuild on site. Once completed, they are then taken it apart again, put on pallets, delivered and unloaded. The self-build options come complete with instructions or instruction videos online.

What to self-build annex kits come with? 

Our self build granny annexe range are popular options, giving massive discounts over the built price and coming as you want them, made to order and made to measure, to your design, and all including delivery to your door.

Options include:

• Kit only complete - supplying panels, rubber roof covering, external waterproof membrane, windows and doors, (optionally external cladding at extra cost). The kit is supplied ready for you to assemble and fit out.
  
  
• Kit only (partial)  - As above but without windows, doors and cladding - if you prefer to supply your own doors, windows.
  
  
• Partial build - where our team do the exterior build and internal walls, and you finish and kit out the inside and clad the building.