Rural Commercial Units Planning Cornwall & Devon

Planning for rural commercial buildings in Cornwall involves applying to Cornwall Council via the Planning Portal, focusing on farm diversification, supporting local economy, and sustainable development, often through applications like change of use for existing farm buildings or new builds under permitted development, but requires detailed plans, site assessments (especially flood/ecology), and must align with rural strategies to balance development with landscape, often needing specialist advice from consultants for complex issues like phosphate levels or Class Q conversions, notes this news article and this planning guide.

Key Considerations for Rural Commercial Projects

  • Farm Diversification: New shops, offices, or tourism uses (like dog groomers/food shops) on farms are common and supported if they boost the core farming business.

  • Barn Conversions (Class Q): Converting agricultural barns to other uses (residential/commercial) often falls under Permitted Development (Class Q), requiring a Lawful Development Certificate but avoiding full planning, says this article.

  • New Builds (Permitted Development): Small industrial/warehouse buildings might have PD rights, but are limited in size (e.g., 100-200 sqm) and height (e.g., 5-15m), according to the Planning Portal.

  • Ecological/Environmental: Cornwall has strict rules (e.g., phosphate levels), often requiring environmental consultants for mitigation, states Cornwall Council.

  • Flood Risk: Zones 2, 3, or areas with critical drainage need site-specific assessments, notes Cornwall Council.

The Application Process

  • Pre-Application Advice: Strongly recommended by Cornwall Council to save time and conditions later.

  • Submit Via Planning Portal: Use the Planning Portal and Cornwall Council for forms, plans, fees, and site location maps.

  • Required Documents: Form, fee, site plan, flood risk assessment (if needed), detailed specifications.

Tips for Rural Cornwall

  • Use Specialists: Rural planning consultants and environmental consultants are invaluable.

  • Check Permitted Development: Use the Lawful Development Certificate process for clarity on barn conversions or small structures, notes this Cornwall Council page.

For further information and advice, please get in touch or book an initial free consultation.

CAse studies

Case Studies
Picture35.png
Farm Shop Consent in Redruth
Read more →

Frequently Asked Questions

  • Class R Permitted Development allows agricultural buildings in England to be converted to flexible commercial uses without the need for a full planning application.

    • It enables rural landowners to repurpose agricultural buildings for a range of commercial uses.

    • The maximum total floor space that can be converted under Class R is 1,000 square metres per agricultural unit.

    • Changes involving up to 150 square metres generally require a simple notification to the local planning authority.

    • Larger conversions require prior approval from the local council, covering specific planning considerations.

    • Class R applies in England only and does not apply in Wales.

    • Commercial, business, or service spaces like shops, cafes, or offices (Use Class E).

    • General industrial processes (Use Class B2).

    • Storage or distribution centers and warehouses (Use Class B8).

    • Hotels or guest houses (Use Class C1).

    • Outdoor sport, recreation, or assembly and leisure facilities.

  • Under 150 square meters: No prior approval test is needed, but you must notify your local council about the change.

    150 to 1,000 square meters: You must apply for prior approval from the local planning authority before starting.

    Councils in the South West check for transport/highway safety, noise limits, flood risks, and land contamination.

    • It does not grant permission for major external building work, new structural openings, or shopfronts; those need separate planning consent.

    • It cannot be used if the building is a scheduled monument or a listed building.

    • Protected landscapes like National Parks or National Landscapes (AONBs) are not automatically excluded, but local Article 4 directions can restrict these rights.

    • The conversion must start within three years of the prior approval date.

Book A Consultation