Most Farmers Don't Know Their Barn Could Be a House — And the Rules Have Changed.
Class Q permitted development rights were expanded in May 2024. You can now convert agricultural buildings to up to 10 homes without full planning permission. But the application has to be prepared correctly. Most aren't.
Tell us about your barn.
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How It Works
Book a consultation
Tell us what you've got — building type, size, agricultural use history, what you want to achieve. No charge for the initial conversation.
We assess the route
We tell you whether Class Q is viable, where the structural and policy risks sit, and what the application needs to succeed.
We submit and manage
We write the planning statement, manage the council from submission to decision, and get it over the line. Submitted within 28 days of instruction.
What Class Q allows on your farm
Class Q of Part 3, Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 permits the change of use of an agricultural building to a dwelling house, together with associated building operations. Since the May 2024 amendments, the scope of this right has expanded substantially.
On a single agricultural unit, Class Q now allows up to 10 dwellings, with a total floor space cap of 1,000 sq.m across all units. No individual dwelling can exceed 150 sq.m. A single-storey rear extension of up to 4 metres is also permitted where hardstanding was in place on or before 24 July 2023.
The most important change: former agricultural buildings now qualify
The single most significant change brought by the May 2024 amendments was the extension of Class Q to former agricultural buildings — those that were once part of an established agricultural unit but are no longer actively farmed.
Previously, a building had to be in active agricultural use at the time of application. That requirement has gone. A redundant building that left the agricultural unit can now qualify for residential conversion, provided it has not been used for any non-agricultural purpose since it ceased to be part of the unit.
If you have an isolated redundant barn that has sat empty for years, it may now have residential development potential that it did not have before May 2024.
Where Class Q applications fail
The most commonly litigated issue in Class Q cases is the structural test. Prior approval can be refused if the proposed works would amount to a rebuild of the existing structure rather than a genuine conversion. Planning authorities across England regularly refuse Class Q applications on this basis.
The other common failure points are: the 10-year rule — a new agricultural building erected under Part 6 within 10 years of the Class Q application disqualifies the unit; Article 2(3) land designations including National Parks and AONBs; listed building curtilage; and applications where the agricultural use history cannot be evidenced.
Foxes Rural identifies all of these before the application is submitted. We do not prepare an application we do not believe will succeed.
Frequently asked questions
How do I know if my barn qualifies?
The key tests are: agricultural use history on or before 24 July 2023; structural suitability without rebuilding; no Part 6 new build on the same unit within the last 10 years; not listed; not in a National Park, AONB or conservation area; and not already changed to another use. We run through all of these at the initial consultation.
Can I convert more than one building on my farm?
Yes. The cap applies to the agricultural unit as a whole — up to 10 dwellings and 1,000 sq.m total. Multiple buildings can be included in one application or in successive applications on the same unit, provided the cumulative totals stay within the caps.
How long does a Class Q application take?
Prior approval applications under Class Q have a statutory 56-day determination period. Most rural authorities determine within that window. We guarantee to submit the application within 28 days of instruction.
What does it cost?
We give a fixed fee after the initial consultation. No hourly creep. Class Q fees vary depending on the number of buildings, the structural condition, and the likely prior approval criteria at that authority.
Find out if your barn qualifies.
We take on a limited number of new instructions each month. If you have a barn you want to convert and you want to know whether Class Q gives you a route to residential use, get in touch. The initial conversation is at no charge. Call 01206 481981.
