Diy Conservatory Shop Ltd - Tel : 01452226290 - Open 7 Days a Week From 9am to 7pm - Deliveries UK Wide

diy Prefabricated modular house extension kits


Perfect for kitchen extensions , dining rooms , bedrooms or lounges and much more . Our diy single storey home extension kits are an excellent permanent alternative to conventional builds or more flimsy less substantial timber frame extensions now promoted elsewhere. A tried and tested fully regs compliant diy build system, installed by many customers without issue. Installation service is also available. 

With heavy gauge steel bases , box section galvanised steel walls and aluminium section roofs we think you will prefer the difference . 20 year structural guarantees as standard for peace of mind , and with various roof and footprint shapes. Much reduced build times (around 6-8 days) and considerably less ground works, are a huge benefit to busy households, removing weeks of mess and hassle.

Garden access problems, drain bridging and sloping ground make our kit a more viable and cost effective alternative to bricks and mortar home extensions that requiring deep strip foundations and suspended block and lintel construction.

Customer prefab hipped back edwardian extension

Diy Hipped Extension

Hipped back Edwardian customer fitted diy prefab extension

customer edwardian prefab extension build

Fitted Edwardian Extension

Fitter installed Edwardian extension with triple track sliding doors


Planning and building regulations - no problem


We are able to organise the building regulation application and inspections of our extension kit installations throughout the country with JHAI ( An independant building regs inspection company ) , for supply only projects or supply and build . We can also advise you on planning regulations requirements and refer you to our fixed price planning service we have organised with 'Simple Plans' - so give us a ring on 01452226290 if you are unsure what is required for your build and need good solid advise.


our Home extension system is the answer



diy Prefab Extension Extra Info


Turn your dream extension into reality - Our prefab extension is available in any width and projection, with any amount of dwarf or full height real brick faced walls, with a choice of more than 47 real brick and stone options available, as well as render and timber clad alternatives. Door combinations are also whatever you require whether French doors , bi-folds or patios. Windows are either full height glazed type or dwarf wall type and combinations of both , so please ask for design advise.

Latest Colour options, no problem -We offer the standard colour and woodgrain upvc options of white, oak, rosewood, rosewood and white and oak and white, as well as the extended colour options and woodgrains. Smart and Aluk aluminium windows and bifold / sliding door options are available in all Ral colours

Upvc or aluminium -Veka Halo upvc doors and windows or Aluk aluminium doors and windows can be combined with Aluk or Smart aluminium bifold doors. We also have sliding and standard door options. Frame profiles are in bevelled or sculptured designs

Regs compliant glazing as standard -  We supply Low E glazing as standard. Upgrades also possible are our solar control glass options with natural or bronze, green and blue tints and stay clean coatings.

All of our tiled and solid roof options are available - from popular ranges from Guardian, Supalite and Ultraroof 380, as well as ultraframes Livinroof orangery solid roof option.

Lightweight flat roofs in composite or timber are now available - We supply 2 roof options that can have various sized rooflights added. EPDM is the most popular roof covering, but other coverings are possible such as fibre glass.

Regs compliance as standard - We use the uprated Durabase plus base for our extensions, as it is regs compliant throughout the UK and Ireland, with varying thicknesses of insulation as required to comply in each postcode area


Steel base and wall construction

steel base construction

Building regs compliant heavy guage  Engineered steel solution (insulation layer and floor not shown)

steel base and wall section

sample Base showing layered steel base & wall construction - (wall cavity insulation not shown)

We use a Durabase Plus (regs approved) real brick faced modular base and wall system in our home extension kits to speed up your base and wall build - typically 2 days. These are multi-layered wall systems with galvanised heavy guage steel box formed construction - not cheap green timber, like many other external wall cladded SIP's systems.


Lightweight aluminium tiled roof construction

prefabricated lean to extension exterior

modern aluminium solution

prefabricated lean to extension interior

Stunning Open  interior

Supalite tiled conservatory roofs are one of our  preferred options with our extension systems, but we can use our other alternatives such as our DCS4000, LivinRoof, UltraRoof 380 and Ultraframe RealRoof . All of our solid roof options are permanent well built solution to conventional timber roofs.


Customer project


prefabricated lean to extension exterior

Customers lean to Prefab extension

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prefabricated lean to extension interior

Customers prefab lean To  Kitchen interior

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Contact & Quotes


We provide an online free quick quote service for all of our ranges accessed on the top menu. If you need to discuss your project in more detail then ring us on 01452226290, or email us on our contact page enquiry form, again accessed on the top menu.