How Long Does It Take To Build A Garden Room In The UK & What Planning Permission Is Required?

The garden room – a personal oasis in your backyard, a space for creativity and relaxation, a preserve of very specific content creation online, or even just an escape from the daily grind. 

But how long does it take to build this slice of paradise (okay, maybe that’s going a bit far) in the UK? And what planning permission do you need to make it a reality? Fear not, dear reader, for we have delved into the depths of garden room construction, peeked under the floorboards, and emerged with answers to these burning questions.

How Long Does It Take To Build A Garden Room?

Let’s start by addressing the elephant in the room (or rather, the garden): how long does it take to build a garden room? Well, much like a fine wine or a good British queue, the time it takes to construct your garden retreat can vary. 

The time it takes to build a garden room in the UK can vary depending on several factors, such as the size and complexity of the design, the materials used, and the level of professional involvement. Generally, it can take anywhere from a few weeks to a few months. Here’s a rough breakdown of the stages involved in building a garden room:

  1. Planning and design: 1-4 weeks
  2. Obtaining necessary permits (if required): 1-8 weeks
  3. Site preparation, including groundworks and foundations: 1-2 weeks
  4. Construction: 2-6 weeks
  5. Interior finishing and decoration: 1-3 weeks

Considering these stages, you could expect the entire process to take anywhere from 6 to 20 weeks or more. Your specific timeline will depend on your individual garden room project and variables such as weather conditions, contractor schedules, and any unexpected challenges that may arise during the construction process. Some of those challenges include:

Size & Complexity: Small, simple garden rooms may only take a couple of weeks to complete, while a larger, more intricate design could require up to 6 weeks or more.

Weather Conditions: As any Brit will tell you, our weather is about as predictable as a game of Snakes and Ladders. Rain, snow, and high winds can all cause delays in construction, so be prepared to exercise some patience if Mother Nature decides to throw a spanner in the works.

DIY Vs. Professional Installation: If you’re a dab hand at DIY and decide to tackle the project yourself, the timeline may be longer than if you hire a professional team to handle the job. But hey, who doesn’t love a challenge?

Planning Permission: The Nitty-Gritty

Now that we’ve covered the time aspect, let’s dive into the murky waters of planning permission. While garden rooms are generally considered permitted development in the UK, there are some caveats to keep in mind:

Size Matters: If your garden room is single storey, less than 2.5 metres in height and occupies less than 50% of your garden area, you’re likely in the clear. However, if it exceeds these dimensions, you may need to seek planning permission. Moreover, it shouldn’t have a balcony, veranda or raised platform.

Building Regulations: You will not need a certificate if…

  • Your garden room is not attached to your main home.
  • The floor area of your garden room is less than 15 square metres.
  • It doesn’t include sleeping accommodation. 

Location, Location, Location: If your property is within a conservation area, an Area of Outstanding Natural Beauty, or a World Heritage Site, additional restrictions may apply. In these cases, it’s best to consult with your local planning authority before proceeding. Also, you can’t build your garden room in front of the principal elevation of the house; in other words no building it in your front garden.

Purpose: Garden rooms used for personal enjoyment typically don’t require planning permission, but if you plan to use the space for business purposes, you may need to seek approval. You can’t use your garden room as a self-contained living space. Moreover, if you wish to use it for purposes that you usually do in your main home, like showering or cooking, you may need planning permission.

Listed Buildings: If your property is a listed building, you’ll need to obtain consent from your local planning authority before constructing a garden room.

What Is The Average Cost Of A Garden Room In The UK?

In 2023, the average cost of a garden room in the UK varies significantly depending on factors such as size, materials, and additional features. Leading experts estimate that the starting price for a complete and installed garden room £15,745. However, more bespoke designs can increase the cost substantially.

Adding a bathroom or kitchen to your garden room can also significantly impact the cost, with prices ranging from £2,400 to over £30,000 . It’s essential to consider all these factors when determining the average cost of a garden room in the UK in 2023.

The Bottom Line

Building a garden room in the UK can be a frustrating but fulfilling journey, filled with creativity, anticipation, hurdles, and just a touch of British bureaucracy. With a construction timeline ranging from just a couple of weeks to several months, and a clear understanding of planning permission requirements, you’ll soon be on your way to enjoying your very own backyard haven. So, dust off those gardening gloves, brush up on your DIY skills, and get ready to create a space that’s uniquely yours. Happy building!

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