The conversion of this 18th century threshing barn, dairy and stables in Kent by Liddicoat & Goldhill has created a modern home that combines its heritage with chic industrial details. The original green oak frame was carefully disassembled and restored by a specialist. The structural frame remains in the former stable, but the main posts and beams in the barn are mostly cosmetic – the oak is supported by a steel exoskeleton, which is clad in structural insulated panels (SIPs).
Formerly a stable block, this grade II listed structure has been given a stunning update by AR Design Studio. The result is a contemporary three-bedroom house. The aim was to preserve the existing character and layout, blending original details alongside a modern interior scheme. Many of the authentic features have been re-purposed for use in the property, such as the original stable partitions, which are now walls.
Having been left redundant for many years, this grade II listed gasworks in the Cotswolds has undergone a dramatic transformation by Chris Dyson Architects to create a unique extension for the adjacent property. Corten corrugated steel clads the structure, in a nod to its industrial past, whilst also providing a clear separation from the stone cottage.
Investigating the building
If you’ve found a structure that seems ripe for conversion, you will need to thoroughly examine it to establish whether it’s suitable and if there are any factors that might cause costly complications or delays. Here are the key considerations:
Look into whether the conversion is viable. “There are some things that you need to investigate before you purchase,” says Anthony Hudson, director of Hudson Architects. “These are completely unnegotiable and will affect whether the project can go ahead. This includes the likes of insufficient access, which would be highlighted by a highway survey.”
Understand what might hold up the programme. Sometimes the site investigation findings will delay the build – for example, if your plot requires an archaeological dig or if the ecological survey discovers the presence of bats or another protected species. “Even if these investigations cause a holdup, they aren’t likely to affect whether the project can go ahead or not, because ultimately the scheme should be doable in the long term,” says Anthony.
Establish what design is suitable for the building. When it comes to finalising a scheme, the essential investigations are structural surveys (to examine the condition of the building) and measured surveys (so that you can understand what space there is and how to make the most of it). “Good advice at this stage is really crucial; make sure you understand what work is needed so that you can budget accordingly,” says Anthony. “Any building conversion into residential use is likely to put a lot of stress onto the roof fabric, so it’s best to get a structural engineer to set out the capabilities of the existing form.”
Recognise the limitations of your site. You’ll need to find out whether the building is listed or within a conservation area, as this will have an impact on your proposal and planning consent. Bear in mind also that some conversions are considered to be permitted development. “My advice is to get a planning consultant on board because the process can be complicated,” adds Anthony. “You can also contact your council to find out what surveys are required.”
Situated in the idyllic landscape of the North Pennines, this 19th century chapel has been converted into a modern holiday cottage by Swiss architects Evolution Design. Its remote location meant that all the services needed to be installed from scratch. The building itself, which had sat vacant in a derelict state for many years, required a great deal of structural work to create a watertight property. The finished result is a stylish, modern dwelling that still echoes its heritage.
Feeringbury Barn is a grade II listed structure that has undergone a dramatic reworking by Hudson Architects. The conservation officers wanted the project to preserve its industrial aesthetic, which the revamp has certainly achieved. Recycled and reclaimed materials have been incorporated throughout and the open-plan layout retains the volume of the barn and the beauty of the beams.
Marraum Architects worked alongside Cornwall-based architect Chris Hendra to convert an old schoolhouse into two properties – one for the owners and the other for their daughter’s family. New windows and a conservatory work to flood the building with natural light, while internal readjustments included raising a wall for the owners to display their collection of glass bottles and cookery books.
Many self builders are attracted to the idea of a barn conversion, namely because of the appealing characteristic details and potential for large open-plan schemes. But what are the main considerations when it comes to approaching this kind of project? Below, Chris Mackenzie, director at Designscape, offers his top tips:
Don’t lose its character. Take time getting to know the building so that you can work with it and not against it. For example, incorporating lots of little rooflights could make the barn feel like it’s divided into small spaces inside, whereas one big glazed panel will reflect the large open-plan interior.
Avoid conventional house layouts. It can be quite difficult to fit domestic life into one large space, but dividing a big barn into lots of little rooms could completely lose the character of the structure. Where you need a separate zone, opt for freestanding enclosed areas, such as a standalone bathroom pod. Think about the room as a piece of furniture in a capacious area rather than a partitioned-off zone.
Understand how much it’s going to cost. Get the surveys and a cost plan done by professionals and have a healthy contingency when you start the project so that you can account for any complications. This will allow you to mitigate the risks by knowing the worst case scenario before you begin work.
Comply with Building Regulations. You need to understand the technical considerations of converting to domestic use. For example, if your barn only has slit windows that don’t offer access then you may need to come up with an alternative strategy to include a first floor fire escape route. You simply can’t compromise on safety issues.
Choose the right kind of heating. Warming a large space can be tricky, but we have found the most effective solution to be underfloor heating. This will create an even climate without cluttering the interior with radiators.
Get a good team on board. Having decent professionals on your side is money well spent. Planning everything right at the beginning of the process alongside your experts is the best way to have a stress-free build.
Back to the drawing board
This late 18th century structure was still being used as an agricultural threshing and cattle barn until the mid-1990s. It had since been converted into a house, but in 2009 the new owners were unhappy with the maze of lots of small rooms. They employed McLaren Excell to strip the building right back and start again with a new open plan design that better represents its heritage, along with a hint of Scandinavian influence.
Set within a Victorian block in London, the owners of this former warehouse were able to see past its derelict state when they bought it. They loved its light-filled interior and tranquil atmosphere in the heart of urban life. Henning Stummel Architects have used a composition of plywood boxes to hide bedrooms and bathrooms at the rear of the structure, while the rest of the building features an open-plan space that retains a strong sense of its industrial heritage.
This grade II listed barn in Bath was in a poor state of disrepair when Designscape Architects took on the challenge of transforming it into extra accommodation for the adjacent farmhouse. The look of the structure has been maintained, with rooflights embedded into the new covering to pour light into the open-plan interior.
First published: August 2016