Bespoke Garden Rooms, Outhouses & Garden Offices in Essex & London
Outgrowing your home but don’t want to move? Our expert house extension services in Essex give you the extra space you need, beautifully designed and professionally built.
Adds Space Without Moving
Gain an extra room without the cost and stress of moving house.
Boosts Property Value
Flexible Lifestyle Upgrade
Transform Your Outdoor Space with a Garden Room
We design and build bespoke garden rooms, outhouses, and garden offices that enhance your home and lifestyle.
Whether you need a quiet space to work, a stylish home gym, or a garden retreat for relaxing, our team will create a structure that’s not only practical but beautifully built. With expert craftsmanship and premium materials, your garden room will be comfortable, durable, and designed to last year-round.
We design and build garden rooms across:
Essex: Chelmsford, Brentwood, Billericay, Colchester, Epping, Southend, Basildon, Harlow and more
London: East London, Stratford, Hackney, Ilford, Chigwell, South Woodford, Wanstead, Leyton, Leytonstone and more
What is a Garden Room
A garden room is a fully insulated, standalone building constructed in your outdoor space. Unlike sheds or summerhouses, our garden rooms are built for all seasons — with heating, insulation, electrics, and even plumbing if required.
Garden rooms are ideal for:
- Home offices and remote working
- Gyms and fitness studios
- Garden bars and entertainment spaces
- Music studios
- Guest accommodation
- Playrooms and teen hangouts
- Hobby rooms and creative workshops
Our Process
Consultation & Design
We’ll discuss your needs, assess your outdoor space, and create tailored design ideas.
Planning & Construction
We’ll guide you through permissions if needed, then handle the full build including structure, finishes, electrics, heating, and optional plumbing.
Completion & Handover
Your garden room is delivered ready to use, exactly as you imagined.
Customisation Options
Your garden room can be designed with:
- Bi-fold or sliding glass doors
- Skylights or roof lanterns for natural light
- Internal partition walls for multiple uses
- Decking or veranda extensions
- Modern or traditional cladding options
- Integrated smart lighting and heating
Garden Room types
Garden Offices
With remote working here to stay, a dedicated garden office is the perfect solution. Escape household distractions and create a professional workspace right outside your door.
Outhouses for Multi-Purpose Use
Entertainment & Leisure Rooms
Eco-Friendly Garden Rooms
Questions we’re asked about garden rooms in Essex & London
Do I need planning permission for a garden room?
Can garden rooms be used all year round?
How long does it take to build a garden room?
Will a garden room add value to my property?
We'd love to hear from you and discuss your project
What makes us different?
We are a team of experts and truly passionate about every project we deliver
We offer a comprehensive range of services to meet all your renovation needs
We offer excellent customer service and peace of mind regardless of project size
We always take time to listen to our clients and make their vision a reality
Our Garden Room Projects
Client testimonials
Contact us
Ready to add a bespoke garden room to your home?
Contact KNR Group today for a free consultation and quote.
Call us or request a callback, let’s create the perfect garden space together.