How much does a barn conversion cost per square metre?

Question

We're in the process of buying a small stone barn in Yorkshire with planning consent already in place. It's roughly 120 square metres over two floors, watertight but nothing inside and no services connected yet. Every online calculator gives us a wildly different figure, anywhere from £1,500 to £3,000 per square metre. What's a realistic number to budget for a full conversion these days?

Ryan · Answer

Your probably looking at £2800 per square meter realistically 👍

Garry · Answer

Hi, around £120,00 / 150,00
Depending on extent of work and quality of materials you might have in mind, floor replacement,walls down, wall replacement 
Heating, windows, kitchen fitmant,
Bathroom fitmeants, plumbing, electrical work,
Rendering. Plastering work, carpentry work,
And depending on conditions of roof, and internal walls hopefully this helps a little regards Garry,

Harry · Answer

For a 120m² barn conversion in the UK, the cost per square metre depends heavily on the condition of the barn and how much work is already done.
 
A good working budget would be around:
£2,200–£2,500/m²

For 120m², that gives a build cost of approximately:
£264,000–£300,000

Mark · Answer

Totally concur with Optimum Build, but would further add that services in particular can be a major headache so be wary of this. Your level of finish quality is also a factor beyond control of contractor opinion.

Dragos Daniel · Answer

With planning already in place, a realistic budget for a full barn conversion is typically £2,000–£3,000 per m², depending on the specification, structural work and the cost of connecting services. For a 120m² conversion, I’d budget around £240,000–£360,000, plus a contingency of 10–15% for unforeseen work, which is common with older stone barns. A detailed survey and fixed quotation from a contractor will provide a much more accurate figure before you proceed

Adam · Answer

Depending on what exactly you would like, (i.e) living, cooking, gas, electric will alter the price significantly. I would estimate around £12k-£20k depending on what exactly you would like done .

Dean Jerry · Answer

the figure will be anywhere from £1,500 per square meter to say £5,000 per square meter at top end of scale depending on your specifications/choice of materials used etc just make sure you dont spend above resale value ! As every area/postcode will have a ceiling price of what a property is worth by type irrelevant of the fixtures & fittings you put into a build.

John · Answer

With it being a stone construction barn I would realistically look at between £350,000 - £400,000. Obviously it depends highly on the current condition of the stonework. Lots of old stone barns never had proper concrete footings so giving an accurate ball park figure without seeing surveyors reports is quite difficult. Good luck though.

Ashraf · Answer

For a stone barn conversion in Yorkshire that's around 120m² over two floors, with the structure already watertight but requiring a complete internal fit-out and new utility connections, a realistic budget today would typically be £2,000–£2,800 per m².

That would put the total project cost in the region of £240,000–£336,000, depending on the specification, site access, utility connections, insulation requirements, windows, heating system, and interior finishes.

Barn conversions often cost more than standard extensions because of structural upgrades, heritage considerations, and the need to preserve the character of the building.

My advice is to allow a 10–15% contingency for unexpected works, as older buildings can reveal hidden issues once work begins.

A detailed site inspection and fixed quotation are always the best way to establish an accurate budget before starting the project.

Bob · Answer

Realistically, if you budget £1900  to £2100for the conversion, you may need to increase that,it all depends on the finish and initially the condition of the barn itself

How much does a barn conversion cost per square metre?

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