Manchester BNG advice
Biodiversity Net Gain in Manchester
Plan your Manchester development around local habitats, planning requirements and practical biodiversity gains.
ACP Consultants can help with habitat surveys, biodiversity metric calculations and a practical BNG delivery plan for your Manchester site.
Local planning
The adopted policies must be read together
Manchester’s Core Strategy was adopted on 11 July 2012. Places for Everyone took effect on 21 March 2024. The council’s 2024 addendum identifies the exact parts of the Core Strategy that were replaced; unaffected provisions remain part of the city’s framework.
| Policy or document | Why it matters | Applicant response |
|---|---|---|
| Places for Everyone JP-G8 | The adopted biodiversity and geodiversity policy | Use the adopted joint-plan wording with the current statutory BNG framework. Avoid citing the wrong policy number from an older draft or summary. |
| Core Strategy EN15 | Biodiversity and Geological Conservation, partly replaced in 2024 | Read the retained policy with JP-G8. The addendum replaces specified wording, not the whole Core Strategy. |
| Core Strategy EN14 and PfE JP-S4 | Flood-risk provisions, with a specified partial replacement | Coordinate drainage and flood-risk work with habitat design. Identify the operative policy text before setting out the planning response. |
| Core Strategy EN17 and PfE JP-S4 | Water-quality provisions, also partly replaced | Assess water-related effects separately from the habitat-unit balance. Show how construction and operation protect relevant water features. |
| Site allocations and local development guidance | The requirements applying to the particular plot | Check allocation boundaries and relevant development frameworks. A regeneration designation does not remove ecological assessment needs. |
The council’s Places for Everyone page explains the joint plan’s role. Prepare one clear policy schedule so the planning statement does not quote superseded and current provisions as separate requirements.
Policy changes
Manchester’s emerging Local Plan: publication stage completed
Consultation closed in September 2026
The council’s publication-stage page records that consultation closed on 28 September 2026. It says responses are being considered before submission and independent examination, subject to the issues raised.
This is an emerging plan, not evidence that a replacement has already been adopted. Check the latest stage before an application is submitted or substantially revised.
Keep policy change separate from national BNG changes
A proposed local policy and a change to national regulations have different legal status and timing. State the adopted policy, emerging proposal and statutory requirement separately in the report.
For a project with a long design programme, retain a dated policy schedule. That makes it easier to identify what changed and whether the habitat strategy needs revision.
Nature recovery
Greater Manchester’s published nature recovery strategy
The Greater Manchester LNRS collection provides the published strategy, habitat and species priorities and supporting documents. Use the current nature-network mapping and the relevant measures to identify opportunities for a Manchester site.
Start with the mapped action, then check feasibility
Compare the site and surrounding connections with the published priorities. Record the actual habitat intervention that could contribute, rather than simply stating that the proposal is within Greater Manchester.
Then test soils, water conditions, space, public use and management access. A mapped opportunity does not prove ownership, habitat condition or permission to carry out works.
Explain strategic significance in the metric
GMCA’s BNG guidance links strategic significance to the LNRS Nature Network and provides a dedicated multiplier guidance note. Apply that guidance alongside the current statutory metric instructions.
Document why the proposed action matches the relevant priority. Do not assume that proximity to a park, a city-centre location or the presence of any planting automatically earns the higher score.
Local ecology
River corridors and urban habitat connections
| Area or setting | Practical implications |
|---|---|
| River Medlock and Mayfield | Watercourse restoration, bankside habitat and floodplain design can work together. Coordinate levels, drainage, access and long-term management from the outset. |
| River Irk and North Manchester | Check connected riverside vegetation and the effects of infrastructure, lighting and public access. Assess the actual corridor rather than treating the red-line boundary as the limit of influence. |
| Irwell edge and cross-boundary proposals | Confirm which authority covers each part of the works. Consider ecological connections across the river and adjacent land, including the relationship with Salford. |
| Ancoats, New Islington and canal-side plots | Investigate water-related habitats, vegetation and buildings. Dense development can still affect habitat links or require species surveys. |
| Wythenshawe and southern neighbourhoods | Trees, woodland, grassland, gardens and water features may shape development layouts. Assess the actual parcels and their management rather than assuming a uniform suburban baseline. |
| Previously developed land | Unmanaged surfaces can support habitat mosaics and vegetation. Survey before clearance; past industrial use is not proof of low biodiversity value. |
These examples identify issues to investigate, not findings about a particular site. Records, designated-site information and field surveys must establish what is present and which effects require assessment.
Planning evidence
Prepare a coherent planning evidence package
Start with Manchester’s published validation checklists and current national requirements. The council’s checklist collection is labelled 2018, so it cannot be treated as a complete statement of later statutory BNG requirements. GMCA also publishes regional BNG submission guidance.
Baseline, surveys and consistent mapping
Provide the appropriate ecological assessment, habitat plan and condition evidence. Identify the baseline date and explain any relevant degradation or earlier clearance. Match the habitat parcel references to the statutory metric.
Scope protected-species surveys from the site features and proposed works. Buildings, trees, watercourses and lighting changes may require evidence beyond the habitat calculation. Resolve seasonal survey needs early.
Design response and delivery evidence
Show retained, lost, enhanced and created habitats on the proposed plan. Coordinate the metric with landscape, drainage, access and utility drawings. Explain target conditions, establishment assumptions and any offsite shortfall.
Use our planning evidence guidance to organise the package. A short metric summary does not replace the underlying calculation, plans and reasoning needed to assess the proposal.
National requirements
Does statutory BNG apply to your development?
Qualifying planning permissions in England normally require at least 10% biodiversity gain. Start with the development type, application date, whole red-line area and habitats affected. Record the reasons and evidence if claiming an exemption.
Rules from 6 August 2026
New applications on sites of 0.2 hectares or less may be exempt, provided onsite priority habitat is not adversely affected. Wholly temporary development permitted for five years or less can also qualify, subject to the habitat condition. The dedicated self-build and custom-build exemption no longer applies to new applications from that date.
Earlier applications and other exemptions
Householder development has a separate exemption. The de minimis route has specific habitat-impact thresholds. Earlier permissions and section 73 variations need their own transitional assessment. Avoid assuming that “one house” or “small site” settles the question.
Use the BNG exemption guide with the current government exemptions.
Survey and design
Choose the metric and test the layout early
Use a statutory tool and record its version
Defra’s statutory biodiversity metric workbook was updated to version 1.1.1 on 10 November 2026. Record the version used and follow the accompanying rules. Published statutory versions can remain acceptable; non-statutory Metric 4.0 is a different tool.
The Small Sites Metric has separate eligibility restrictions. Confirm suitability before selecting it. See the statutory metric guide and current government tools.
Make the figures deliverable
Classify and assess existing habitats before clearance. Calculate area, hedgerow and watercourse units separately, then apply the relevant trading rules. State the evidence for condition and strategic significance instead of assuming the most favourable scores.
Test changes to access, drainage and landscaping with the ecologist. Habitat area, target condition, establishment time and maintenance access must remain credible after engineering changes. Update the plans and metric together.
Design and delivery
Design workable gains for a constrained urban plot
Retain useful features before adding new ones
Test whether existing trees, vegetation and water-related features can remain within a viable layout. A retained feature may offer immediate habitat value and connectivity that new planting takes years to establish.
Coordinate construction access, storage, lighting and drainage protection. A habitat shown as retained in the metric must also be protected through the construction programme.
Make proposed habitat targets credible
Green roofs, planted courtyards, drainage features and small grassland areas can contribute where their classification and management are appropriate. Check sunlight, substrate, irrigation, public use and maintenance access.
Do not assume that an attractive planting illustration establishes a particular habitat condition. Set realistic targets and avoid double counting overlapping areas or confusing species enhancements with habitat units.
Published local research
What Manchester’s off-site needs study can and cannot tell you
A dated city-wide modelling exercise
The council’s Assessment of Need for Off-Site Biodiversity Units was prepared by TEP in December 2023. It modelled a development pipeline of 211 sites using Defra metric 4.0 and explored the likely need for offsite provision.
The report supports understanding of the city’s potential delivery challenge. It is not a current unit-stock list or a site-specific statutory metric assessment.
Use the lesson, not the old figures as a quotation
The study predates mandatory BNG implementation and the August 2026 exemption changes. Its assumptions and development pipeline should therefore not be presented as current demand or the likely cost of an individual proposal.
For a live project, calculate the actual habitat shortfall using the appropriate current tool. Then seek compatible units and a dated quotation, with legal and management responsibilities clearly identified.
Off-site delivery
A verified nearby habitat-bank example
Dunkirk Lane is in Tameside, not Manchester City Council
NPL Group identifies Dunkirk Lane Habitat Bank in Tameside’s planning area and the Manchester Conurbation National Character Area. The published gain-site reference is BGS-290626001.
The provider lists lowland meadow, neutral grassland, scrub, woodland and hedgerow units. Confirm the current quantity, habitat compatibility, reservation terms and price directly; the page is not a guarantee of stock for a particular development.
Check the actual locations and allocation
A nearby bank can fall outside the development’s local planning authority. Apply the statutory metric’s spatial rules using both exact locations and the relevant unit type, rather than a broad Greater Manchester label.
Inspect the official gain-site register and confirm the units allocated to the development. Registration alone does not prove availability or complete the gain-plan evidence.
GMCA publishes habitat-bank verification and auditing guidance, but asks applicants to check whether the relevant authority has adopted it. Confirm the appropriate legal route and local requirements for the proposed delivery land.
Real local example
Mayfield Park: an urban river-restoration lesson
A real green-infrastructure project on the Medlock
Natural England’s Mayfield Park case study describes a 2.6-hectare city-centre regeneration project. Opening the previously concealed River Medlock helped create water-edge habitats alongside flood-management and public-space benefits.
It demonstrates the value of integrating landscape and river design early. It is not presented here as an approved statutory Biodiversity Gain Plan or a habitat bank selling units.
Apply the design principle to the actual site
For another Manchester proposal, consider whether habitat, drainage and accessible green space can be planned together. Establish the relevant river permissions, flood requirements and ecological constraints before committing to an intervention.
The same physical solution will not suit every watercourse or urban plot. Use site-specific surveys and engineering advice. No ACP involvement in Mayfield is claimed.
Costs and responsibilities
Budget separately for assessment, delivery and monitoring
| Category | What the quotation or agreement should clarify |
|---|---|
| Ecological work | Surveys, seasonal constraints, condition assessment, metric calculations, reporting and revisions. |
| Habitat creation and management | Establishment work, maintenance access, long-term tasks, replacement planting and remedial funding. |
| Offsite units | Habitat type, quantity, location effects, reservation, allocation and included administration. |
| Council and legal costs | Monitoring contributions, legal drafting, agreement mechanism, payment dates and any indexation. |
| Statutory credits | Separate government prices and last-resort eligibility, rather than a private biodiversity-unit price. |
A current Manchester City Council BNG monitoring tariff was not verified in the reviewed sources. Ask for a project-specific written figure; do not substitute another Greater Manchester authority’s charge. Published strategic demand estimates are also not a price list.
After permission
Secure the habitat outcome beyond planning permission
The gain plan is a separate approval stage
For qualifying development, the Biodiversity Gain Plan must be approved before commencement. Planning permission and an indicative design-stage calculation are not, by themselves, that approval.
Confirm how significant onsite gains and registered offsite gains will be secured. Match the legal documents, habitat plans and delivery programme. Resolve ownership and control of management land early.
Give the habitat manager a usable specification
The habitat management and monitoring plan should identify targets, establishment tasks, maintenance, monitoring, reporting and corrective action. Name the party responsible for each element and its funding.
Keep the metric and drawings current when design changes occur. Drainage, access or utility revisions can alter a habitat parcel and affect the forecast gain even where the main building footprint stays the same.
Your next steps
A practical Manchester planning evidence checklist
- Confirm the city boundary and adopted policies
Check the red-line land, relevant authority, allocation and Core Strategy provisions after the 2024 addendum. Use adopted JP-G8, not an outdated policy reference.
- Establish applicability and survey needs
Apply the current national rules and transition provisions. Scope habitats, species, watercourses and designated-site effects before clearance.
- Use the recovery strategy at parcel level
Identify the relevant LNRS measure and verify its feasibility on the ground. Explain strategic significance under the current metric guidance.
- Coordinate the design and calculation
Match baseline and proposed habitat references across surveys, landscape plans, drainage and the metric. Test retention and realistic target conditions.
- Verify delivery and costs
Confirm legal security, any offsite registration and allocation, current unit availability, monitoring contributions and management funding.
- Programme gain-plan approval and habitat management
Complete the required pre-commencement approval and set responsibilities for establishment, monitoring, reporting and remedial work.
Project support
BNG assessment and planning support for Manchester
From survey to a workable delivery plan
ACP can help with habitat surveys, condition assessments, statutory metric calculations and BNG reporting. We also support gain plans and habitat management documentation. The scope should reflect the actual land, planning stage and available evidence.
Our BNG guidance hub explains the overall process. The England guide provides national context. Use this local guide to identify the council policies and ecological connections that need a site-specific response.
Send the information you already have
Share the red-line plan, site address or grid reference, proposed works and application stage. Include ecology reports, landscape drawings and council correspondence. These help avoid duplicated work and identify the remaining surveys and delivery decisions.
Common local questions
Manchester Biodiversity Net Gain FAQs
Does Manchester City Council cover all of Greater Manchester?
No. Manchester City Council is the ordinary planning authority for the city. Salford, Trafford and the other metropolitan boroughs have separate planning authorities. Check the actual site boundary.
Which adopted biodiversity policies apply in Manchester?
Read Places for Everyone JP-G8 with the retained parts of Core Strategy EN15 and other relevant adopted policies. The council’s 2024 addendum identifies exactly which provisions were replaced.
Has the new Manchester Local Plan been adopted?
The council page reviewed on 11 November 2026 records publication consultation closing on 28 September 2026, with responses considered before submission and examination. Do not treat that stage as adoption.
Which nature recovery strategy covers Manchester?
The published Greater Manchester LNRS covers the city. Use its habitat and species priorities and current nature-network mapping, together with site surveys and the statutory metric rules.
Does a brownfield site automatically have low habitat value?
No. Previously developed land can contain habitat mosaics, vegetation and water-related features. Survey before clearance and establish the baseline under the applicable statutory rules.
Can a bank elsewhere in Greater Manchester supply a city project?
Potentially, subject to compatible units, the metric’s trading and location rules, legal security and allocation. A shared regional label does not establish the same local planning authority or the correct spatial multiplier.
Is Dunkirk Lane a Manchester City Council habitat bank?
No. The provider places Dunkirk Lane in Tameside, within the Manchester Conurbation National Character Area, with reference BGS-290626001. Verify current units and allocation evidence before relying on a purchase.
Does the council’s 2023 study show current unit prices?
No. It is a dated assessment of potential offsite demand using an earlier metric and development pipeline. Obtain a site-specific current calculation and dated supplier quotations.
What are Manchester’s BNG monitoring charges?
A current city-council BNG monitoring tariff was not verified for this guide. Ask the council to confirm the relevant contribution, legal costs, payment trigger and indexation for the proposal.
What should I send ACP for a Manchester BNG quotation?
Send the red-line plan, site location, proposed works, application stage, ecology reports and council correspondence. Include available landscape, drainage and lighting plans to help define the remaining evidence.
Talk to ACP / Site enquiries
What does your site need next?
Tell us where the site is, what you plan to build and how far the application has progressed. We’ll use that context to discuss the surveys, calculations or plans your project needs.
What to have to handA red-line plan, an existing ecology report or a request from the council can help us scope the work. Start with whatever you already have.
Request a site-specific quotation
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Manchester BNG
Sources and references
Reviewed 11 November 2026.
Planning, nature recovery and delivery sources
- Manchester Core Strategy: adopted 11 July 2012
- 2024 Core Strategy addendum: partial policy replacement
- Places for Everyone: adopted joint-plan context
- Manchester Local Plan review: publication-stage status
- Manchester planning validation checklist collection
- Greater Manchester Local Nature Recovery Strategy documents
- GMCA BNG guidance and habitat-bank verification
- GM LNRS strategic-significance multiplier guidance
- TEP, December 2023: Manchester offsite biodiversity-unit needs study
- NPL Group: Dunkirk Lane Habitat Bank
- Natural England: Mayfield Park green-infrastructure case study
- National BNG planning guidance
- Current exemptions and application-date transitions
- Statutory biodiversity metric tools and guides
- Official gain-site register