Why land quality is becoming a planning battleground

For years, the agricultural quality of a development site was a footnote in the planning process. That is no longer the case. Local planning authorities across England are asking harder questions about what is being built on, and they increasingly want evidence rather than assertion.

The result is that Agricultural Land Classification, or ALC, has moved from a technical afterthought to something that can genuinely influence whether a scheme is supported or refused. Where a proposal would take good agricultural land out of production, that loss has to be weighed in the planning balance, and the weight it carries depends entirely on the quality of the evidence put forward.

For developers, promoters and planning consultants, that makes getting the survey right, an early decision rather than a late one.

What an ALC assessment actually measures

ALC grades land according to its long-term physical capability to grow crops. It is not a judgement about how the land is farmed today, or about its market value, it is about what the climate, the site and the soil will permit over time.

The system runs from Grade 1, excellent quality, down to Grade 5, very poor quality. Grades 1, 2 and 3a together make up what planning policy calls Best and Most Versatile land, usually shortened to BMV. That distinction between 3a and 3b often matters more than any other line on the plan, because it is the point at which land moves in or out of the protected category.

Reaching a defensible grade takes more than a desktop review. A typical Ceres survey combines:

• A desktop assessment of existing soil, geology and climate data
• Systematic auger borings across the site, with soil pits where a fuller profile is needed
• Laboratory analysis where soil texture or chemistry needs confirming
• Calculation of wetness and droughtiness limitations, and any interactive limitations between them
• An ALC grading plan, supported by a detailed technical report

The methodology follows current Defra and Natural England guidance and the associated ALC criteria, which is what allows the findings to be relied on by a planning officer, an inspector or a third-party reviewer.

When you are likely to need one

An ALC report is commonly required for:

• Residential development sites
• Strategic land promotion projects
• Planning appeals
• Commercial and industrial development
• Solar and other renewable energy projects
• Infrastructure schemes

More broadly, any scheme where the loss of BMV land could become a planning consideration is a candidate. If that question is likely to be asked, it is almost always cheaper and less disruptive to have the answer ready than to commission a survey under deadline pressure later.

How we approach it

ALC has become one of Ceres Rural’s fastest-growing service lines, and we have deliberately built it as a team capability rather than a one-person specialism.

Ten of our consultants are currently ALC qualified, based across Northamptonshire, Shrewsbury, Oxford, Stamford, and Saffron Walden and Chelmsford. Two more will undertake British Society of Soil Science ALC training over the winter. The service line is led by Charles Garrard.

That depth matters most when timescales are tight. Planning submission dates, appeal deadlines and validation requirements rarely move, and a single-consultant operator can only be in one field at a time. Having qualified surveyors in several regions, backed by dedicated technical and administrative support, means we can mobilise quickly on short notice and still deliver fieldwork and reporting to the same standard.

There is a second advantage in how the work sits within the wider business. ALC is a natural point of collaboration between our Rural and Property teams, particularly on strategic land promotion and planning projects where agricultural land quality forms one part of a much larger picture. Clients get soil science and planning context from the same place, and often a route into wider agricultural, planning and natural capital advice alongside it.

We position ALC as a premium technical service. We are not always the cheapest quote on the table, and that is a conscious choice – a report that does not hold up under scrutiny is the most expensive option of all.

Talk to us early

If you are promoting a site, preparing an application or heading to appeal, the earlier land quality is understood, the more options you have. An early assessment can shape master planning, inform where development is best located on a site, and remove a line of objection before it is ever raised.

To discuss an ALC assessment or request a quotation, contact Charles Garrard or your usual Ceres Rural contact.