Guide to assessing development proposals on agricultural land

* Guidance GUIDE TO ASSESSING DEVELOPMENT PROPOSALS ON AGRICULTURAL LAND Updated 5 February 2021 APPLIES TO ENGLAND CONTENTS * 1. Policies to protect agricultural land and soil * 2. LPAs:

consult Natural England * 3. LPAs: how to use agricultural land classification (ALC) * 4. About ALC grades * 5. LPAs: carry out ALC assessments to support your planning decisions * 6. Use

ALC to support your planning decisions * 7. Developers: check if your proposal affects agricultural land Print this page © Crown copyright 2021 This publication is licensed under the terms

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https://www.gov.uk/government/publications/agricultural-land-assess-proposals-for-development/guide-to-assessing-development-proposals-on-agricultural-land 1. POLICIES TO PROTECT

AGRICULTURAL LAND AND SOIL Developers and local planning authorities (LPAs) should refer to the following government policies and legislation when considering development proposals that

affect agricultural land and soils. They aim to protect: * the best and most versatile (BMV) agricultural land from significant, inappropriate or unsustainable development proposals * all

soils by managing them in a sustainable way Natural England uses these policies to advise on development proposals as a statutory consultee in the planning process. 1.1 A GREEN FUTURE: OUR

25 YEAR PLAN TO IMPROVE THE ENVIRONMENT 2018 A Green Future: Our 25 Year Plan to Improve the Environment sets out the government’s 25-year plan to improve the health of the environment by

using natural resources more sustainably and efficiently. It plans to: * protect the best agricultural land * put a value on soils as part of our natural capital * manage soils in a

sustainable way by 2030 * restore and protect peatland 1.2 NATIONAL PLANNING POLICY FRAMEWORK (NPPF) LPAs should use the NPPF to make decisions about the natural and local environment to: *

protect and enhance landscapes, biodiversity, geology and soils * recognise soils as a natural capital asset that provide important ecosystem services * consider the economic and other

benefits of BMV agricultural land, and try to use areas of poorer quality land instead of higher quality land * prevent soil, air, water, or noise pollution, or land instability from new and

existing development Read Chapter 15: Conserving and enhancing the natural environment for full details. 1.3 TOWN AND COUNTRY PLANNING (DEVELOPMENT MANAGEMENT PROCEDURE (ENGLAND) ORDER)

(DMPO) 2015 Planning authorities must consult Natural England on all non-agricultural applications that result in the loss of more than 20 hectares (ha) of BMV land if the land is not

included in a development plan. For example, this includes the likely cumulative loss of BMV land from the proposed development if it’s part of a phased development. This is required by

schedule 4(y) of the Order. 1.4 PLANNING PRACTICE GUIDANCE FOR THE NATURAL ENVIRONMENT Paragraphs 001 and 002: Planning Practice Guidance for the Natural Environment explain why planning

decisions should take account of the value of soils and agricultural land classification (ALC) to enable informed choices on the future use of agricultural land within the planning system.

2. LPAS: CONSULT NATURAL ENGLAND You must consult Natural England for development proposals that are both: * likely to cause the loss (or likely cumulative loss) of 20ha or more of BMV land

* not in accordance with an approved development plan Natural England will advise you on the level of impact the proposal may have on BMV agricultural land. Natural England will take into

account the type of development and its likely long-term effects. Email [email protected] or write to: Natural England consultation service Hornbeam House Electra Way Crewe

Business Park Crewe Cheshire CW1 6GJ 3. LPAS: HOW TO USE AGRICULTURAL LAND CLASSIFICATION (ALC) You can use ALC to help inform decisions on the appropriate sustainable development of land.

ALC uses a grading system to enable you to assess and compare the quality of agricultural land in England and Wales. A combination of climate, topography and soil characteristics and their

unique interaction determines the limitation and grade of the land. These affect the: * range of crops that can be grown * yield of crop * consistency of yield * cost of producing the crop

4. ABOUT ALC GRADES ALC is graded from 1 to 5. The highest grade goes to land that: * gives a high yield or output * has the widest range and versatility of use * produces the most

consistent yield * requires less input BMV agricultural land is graded 1 to 3a. 4.1 GRADE 1 – EXCELLENT QUALITY AGRICULTURAL LAND Land with no or very minor limitations. A very wide range of

agricultural and horticultural crops can be grown and commonly includes: * top fruit, for example tree fruit such as apples and pears * soft fruit, such as raspberries and blackberries *

salad crops * winter harvested vegetables Yields are high and less variable than on land of lower quality. 4.2 GRADE 2 – VERY GOOD QUALITY AGRICULTURAL LAND Land with minor limitations that

affect crop yield, cultivations or harvesting. A wide range of agricultural and horticultural crops can usually be grown. On some land in the grade there may be reduced flexibility due to

difficulties with the production of the more demanding crops, such as winter harvested vegetables and arable root crops. The level of yield is generally high but may be lower or more

variable than grade 1. 4.3 GRADE 3 – GOOD TO MODERATE QUALITY AGRICULTURAL LAND Land with moderate limitations that affect the choice of crops, timing and type of cultivation, harvesting or

the level of yield. Where more demanding crops are grown yields are generally lower or more variable than on land in grades 1 and 2. 4.4 SUBGRADE 3A – GOOD QUALITY AGRICULTURAL LAND Land

capable of consistently producing moderate to high yields of a narrow range of arable crops, especially cereals, or moderate yields of crops including: * cereals * grass * oilseed rape *

potatoes * sugar beet * less demanding horticultural crops 4.5 SUBGRADE 3B – MODERATE QUALITY AGRICULTURAL LAND Land capable of producing moderate yields of a narrow range of crops,

principally: * cereals and grass * lower yields of a wider range of crops * high yields of grass which can be grazed or harvested over most of the year 4.6 GRADE 4 – POOR QUALITY

AGRICULTURAL LAND Land with severe limitations which significantly restrict the range of crops or level of yields. It is mainly suited to grass with occasional arable crops (for example

cereals and forage crops) the yields of which are variable. In moist climates, yields of grass may be moderate to high but there may be difficulties using the land. The grade also includes

arable land that is very dry because of drought. 4.7 GRADE 5 – VERY POOR QUALITY AGRICULTURAL LAND Land with very severe limitations that restrict use to permanent pasture or rough grazing,

except for occasional pioneer forage crops. 5. LPAS: CARRY OUT ALC ASSESSMENTS TO SUPPORT YOUR PLANNING DECISIONS For an overview of ALC use: * 1:250,000 scale regional ALC maps (grade 3

land is not divided into subgrades 3a and 3b) * 1:250,000 scale regional maps predicting the likelihood of BMV agricultural land These maps are not at a scale suitable or accurate for

assessment of individual fields or sites. You can assess if a development proposal is likely to affect BMV agricultural land by using the post 1988 ALC Magic map and detailed site survey

reports. If no site survey reports are available, a new detailed survey may be necessary. 6. USE ALC TO SUPPORT YOUR PLANNING DECISIONS Use ALC survey data to assess the loss of land or

quality of land from a proposed development. You should take account of smaller losses (under 20ha) if they’re significant when making your decision. Your decision should avoid unnecessary

loss of BMV land. 6.1 PROTECT SOIL You should make sure development proposals include plans to: * manage soils in a sustainable way during construction * avoid peat extraction * protect

soils from contamination * reclaim land after mineral working or landfilling 6.2 CARRY OUT NEW SURVEYS If there’s not enough information from previous data, you may need to have a new field

survey to plan for development or to inform a planning decision. You should use soil scientists or experienced soil specialists to carry out new surveys. They should be: * members of the

British Society of Soil Science, the British Institute of Agricultural Consultants or similar professional body * knowledgeable about the ALC 1988 guidelines * experienced in soil

description and ALC assessments 6.3 SURVEY REQUIREMENTS For a detailed ALC assessment, a soil specialist should normally make boreholes: * every hectare on a regular grid on agricultural

land in the proposed development area * up to 1.2m deep using a hand-held auger They should: * dig small inspection pits by hand to a minimum depth of 1m to add supporting evidence to the

borehole data * dig pits where there’s a change in main soil type and ALC grade to provide a good depiction of the site * combine the survey results with local climate and site data to plot

on an Ordnance Survey (OS) base map * use a base map at an appropriate scale for detailed work, such as 1:10,000 scale 7. DEVELOPERS: CHECK IF YOUR PROPOSAL AFFECTS AGRICULTURAL LAND Use the

post 1988 ALC Magic map and detailed site survey reports to help you assess whether a development proposal is likely to affect BMV agricultural land. If no suitable data exists, you may

need to carry out a detailed survey to support your planning application. 7.1 FREE AND CHARGEABLE ADVICE Natural England offers advice for proposals. Some initial advice is free. More

detailed advice is chargeable, for example if your proposal is 20ha or more and requires more detailed advice. Email: [email protected] Back to top