Garden Annex | 25 Year Guarantee

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Expand your home with a garden annex

Luxury Garden Rooms

InFrame Annex

Enhance your living space and property value with a garden annex solution while avoiding the challenges and costs of traditional extensions.

This innovative approach offers a practical and cost-effective way to upgrade your home without the stress of relocation or major renovations.

More than just a garden annex, its an extension of your home

Annex
Annex
Annex
Lounge and Gym
Professional Kitchen
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What makes an InFrame Garden Room

Free Quote and Design

 
We tailor every garden annex to our clients needs.
Everything, from design to materials, is customised to match your unique style.

This personalised approach ensures that the garden room is a true reflection of your individuality.

Talk to our expert building designers today.

Build Your Dream Space

We have a range of designs and sizes to suit any garden with beautiful high spec finishes as standard.

Get more inspiration for your liveable annex spaces with our design brochure.

Garden Room Chiswick

Luxury Show Sites Throughout London, Hampton and Surrey

Why not book a show site visit at one of our luxury garden rooms in London or Surrey.  We will be happy to schedule a convenient time for you to experience one of our beautifully finished garden rooms first-hand and discuss your requirements in detail.

Steel Framed Garden Rooms

Why Steel Frame?

  • Strong and durable
  • No rot, no movement, no deterioration
  • Sustainable
  • Fully recyclable 
  • Lasts a lifetime
  • 25-year structural guarantee
Get in touch today - we can’t wait to help you make your Garden Annex vision a reality

Check out our 5* Google Reviews!

Exceptional Quality As Standard

We create beautiful Garden Annexes using benchmark design, structure and finishes. 

Our long history, brilliant in-house teams & design focus gives you many benefits.

We offer a full in-house planning service to bring your dream Annex to reality

  • Our Annex range come in a vast array of sizes and are fully customisable
  • From smaller compact spaces to large two room Annexes
  • For housing grandparents, visiting family or just an extra bedroom
  • Compact kitchenette to full kitchen space
  • Shower room with toilet
  • 100mm full fill insulation with air tight membrane’s, warm roof technology & commercial grade non-combustible construction boards  
  • Sustainable steel frame construction & building materials by design, no creeks, no movement, no rot, no structural timber, built to last 
  • High recycled content and FSC credentials in all of our materials
  • Build closer to or on your boundary with our market leading Steel Frame Structure and Non-Combustible Core 
  • Works with restricted or through house access 
  • State of the art Steel Screw Foundations minimising groundworks and disruption 
  • State of the art build system with a 25 year InFrame Structural guarantee combined with a 20 year roof weatherproofing guarantee 
  • 10 year insurance backed guarantee for ultimate peace of mind 
  • Full system build meaning no planning permission requirements  
  • Strong floors and ceilings for hanging pictures and bookcases
  • Complimentary site survey and design service, we’ve made it easy so you can think about the things that matter most to you 
  • A full turnkey solution fully installed by our experienced in-house teams to exceptional standards  
  • A proud team driven by quality, reputation and client feedback 
  • Wide selection of cladding from natural Grade A timbers to Composite and sleek aluminium pressings 
  • Architectural led range of windows, sliding and bi-folds doors, glazed side returns, canopies and decks 
  • Unlimited interior and exterior finishing options  
  • Howdens kitchens and sleek bathrooms


Explore our Garden Room Range

Steel Frame Garden Annex

Why would you do it any other way?

Book a free discovery call with our design team & discuss your Garden Room ideas

Garden Annex Design by Inframe

We offer fully customisable solutions, unique designs and a wide range of outstanding finishings.

Read Our Ultimate

Garden Room Annex Guide

Granny Annex

For more information...

A range of Pre-designed rooms & Bespoke Solutions

  • Our tried and tested InFrame range comes in a range of shapes and sizes
  • Wide portfolio of Offices, Gyms, Cinemas, Games Rooms and Bars
  • A large portion of our work is fully bespoke projects – anything is possible