Large Garden Rooms

Fully Bespoke Large Garden Rooms

We specialise in creating bespoke large garden rooms offering spacious, multi-functional environments that elevate outdoor living. Whether you’re looking for a luxurious home office, a guest suite, a gym or an entertainment room, our garden rooms offer endless opportunities.

Crafted from premium materials and tailored to your needs, our rooms bring comfort, style and versatility to your garden.

Fully bespoke designs

10-year insurance backed guarantee

Turn key solutions

Five week lead time

Five star customer service

Finance options available

Large garden room sample specification and prices

Each of our garden rooms is entirely bespoke, which means the cost of each project varies greatly. However, we’ve provided some sample specifications and prices below to give you an idea of the associated cost.

6m x 3m Room

Our 6m x 3m garden room offers the perfect space for a bar, games room or spacious home office.

From £33,150

7m x 3m Room

This is the perfect size if you’re looking for space for multiple desks or for entertaining with a toilet.

From £33,380

7.5m x 4m Room

One of our largest garden rooms, it is perfect for a spacious entertaining space.

From £40,635

All Our HAON Garden Rooms Include:

Project management from start to finish.
Full on-site installation.
10-year structural guarantee and 15 years roofing guarantee.
Ground screw foundations.
Wide choice of external cladding options
Fully insulated for year round use.

Full electrics package to include electric heater.
Internet Connection.
Motion sensor lights.
Choice of uPVC or aluminium windows and doors.
Fully plastered and painted interior.
Choice of high quality floor finishes.

Book a showroom appointment

Fully immerse yourself into the Haon Garden Rooms experience by visiting our fantastic showroom. Located in the middle of Bedfordshire’s stunning countryside in Stagsden, you will have the opportunity to see lots of different garden room designs, sizes, shapes, and finishes.

What our customers say

      EXCELLENT  
   Based on 76 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   bhavini shah 
 
 
 
 Trustindex verifies that the original source of the review is Google. Haon gardens created a great outhouse.
Their team were excellent with good communication, cleanliness and punctuality.
A very well built outhouse to be used as a gym.
  
 
      Posted on Google  
   
   connie adams 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had my garden room finished some time ago and I must say it looks absolutely perfect  now . It's been a great asset , we've used it as a home gym , it's been invaluable . I can't fault the tradesmen that worked onsite , really clean , great workers
  
 
      Posted on Google  
   
   Adam Kelly 
 
 
 
 Trustindex verifies that the original source of the review is Google. When looking around for a garden room it became very clear that Haon were ahead of the game, in planning, the groundwork and construction. The whole process we extremely easy. Jason completely understood our needs and his team are master craftsmen.
To give you an idea of the quality of their work, I've added 2 pictures that I took last week, but the best bit is, Haon built my garden room in January 2022, 2 years ago and it still looks amazing.
I can't recommend Haon enough.
  
 
      Posted on Google  
   
   Keith Vanderpant 
 
 
 
 Trustindex verifies that the original source of the review is Google. Used Haon just over three years ago for a new garden room. From the moment we met Jason the service was excellent. Great company all round and would definitely recommend
  
 
      Posted on Google  
   
   Sabrina 
 
 
 
 Trustindex verifies that the original source of the review is Google. Donâ€™t recommend. Horrible owner too. Avoid at all costs. Very rude and entitled.
  
 
      Posted on Google  
   
   Vicki Eastman 
 
 
 
 Trustindex verifies that the original source of the review is Google. We went to Haon because we needed a specialist, full on-site construction for our new room. The showroom, design and ordering process was simple, informative and easy. Our build went flawlessly, and every member of Haonâ€™s team was highly skilled, friendly and helpful. Our new room looks wonderful and is a delight to work in. The design of bi-fold doors to both front and back has created the â€œsecret gardenâ€ effect we wanted and we couldnâ€™t be happier.
  
 
      Posted on Google  
   
   Tony Gillings 
 
 
 
 Trustindex verifies that the original source of the review is Google. An excellent company,  all their tradesmen were knowledgeable and engaging, special thanks to Ben who ensured everything went to plan.  I would highly recommend HAON for anyone considering adding extra space in their garden.
  
 
      Posted on Google  
   
   IFE PRODUCTIONS 
 
 
 
 Trustindex verifies that the original source of the review is Google. Nonesense
  
 
      Posted on Google  
   
   JANET CHARLTON 
 
 
 
 Trustindex verifies that the original source of the review is Google. I wish to compliment the whole Haon team for their most professional service. I am now the proud owner of a Haon garden room and am truly impressed with this company.
From the moment I walked in to their beautiful showroom in Stagsden, to being handed the keys to the finished project, the whole process has been a delight to behold.
The workmanship and the materials have been of the highest quality with the tradespeople being very experienced, efficient and very helpful.
Thank you Haon for your excellent work, I can't praise you enough.
  
 
      Posted on Google  
   
   C Campbell 
 
 
 
 Trustindex verifies that the original source of the review is Google. We are delighted with our Haon garden room. It was a small but very irregular build and they really made the most of the space. Haon were flexible and adaptable throughout the whole process and the final build quality was outstanding. The working space was small and very close to the house but mess was cleaned up at the end of every day and the garden was spotless at the end of the project. Each trade that attended was highly skilled and polite, and we had lots of fun (and tea). Thank Haon, really first class job x

Design your bespoke garden room and request a quote

Our 3D Garden Room Planner allows you to design your dream garden room. You can explore different size, height, cladding, glazing, decking and lighting options. Once you’re happy with your design, you can submit it to us for a free quote.

We also offer a free design and 3D model service to anyone who’d prefer that we do it for them.

Frequently asked questions about Large Garden Rooms

Do I need planning permission for a large garden room?

Under permitted development as long as your garden room is less than 2.5m tall, is further than 2m away from your boundary line and doesn’t exceed 30m2 then you won’t need planning permission.

If you’re unsure whether you have permitted development, get in touch and one of our advisors will be able to help.

What is the largest size garden room I can have?

Due the bespoke nature of our garden rooms, we can build any size room however most of our clients decide to fit within the permitted development rules which would require the room to be less then 30 sqm.

If you want more information about the available options, get in touch and one of our sales advisor will be able to help you.

Can I have a toilet and/or shower in my garden room?

Yes, we can install plumbing and a full working toilet/shower, sink or kitchenette into your space.

Can I have wall partitions in my garden room?

Yes of course you can – most of our clients prefer an open plan layout but we’re happy to design and install a garden room with multiple rooms when required. You won’t be able to include this as an option in the 3D builder, so please get in touch with our team today and they can design your dream garden room for you.