Middlesbrough BNG advice
Biodiversity Net Gain in Middlesbrough
Plan your Middlesbrough 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 Middlesbrough site.
Local geographic context
Use borough boundaries as well as the wider Tees landscape
Neighbouring authorities remain separate
Stockton-on-Tees, Redcar and Cleveland, Darlington and Hartlepool have their own planning responsibilities. The Tees Valley partnership does not create one shared Local Plan or one borough-wide validation list.
Our North East BNG guide explains the regional setting. This page focuses on Middlesbrough, including Middlehaven, Acklam, Marton, Hemlington, Coulby Newham, Nunthorpe and the beck corridors.
Boundary details affect offsite delivery too
Check the authority for the development and the habitat land separately. In the Nunthorpe area, a provider’s place name or service area may cover land across an administrative boundary.
Keep the site reference, host authority, National Character Area and relevant catchment in the project record. These help establish the correct spatial treatment and avoid ordering units against an assumed location.
Adopted policy references
The adopted planning framework still applies
The council’s planning policy gateway identifies the Core Strategy 2008, Regeneration DPD 2009 and Housing Local Plan 2014. Read their surviving provisions, saved policies and relevant neighbourhood plans together.
| Policy | Role | Application response |
|---|---|---|
| CS4 — Sustainable Development | Protection and, where possible, enhancement of environmental assets | Explain effects on biodiversity, habitats, water resources and green infrastructure. |
| CS20 — Green Infrastructure | An integrated green network | Show how the proposal relates to beck valleys, green wedges, parks and the Tees frontage. |
| CS21 — Green Blue Heart | Waterfront and landscape connections | Coordinate the design with the water environment and green infrastructure where the policy applies. |
The Core Strategy policy wording is the starting point for these references. The 2014 plan replaced housing elements of the older documents, so do not treat every historic allocation as current.
Recent planning changes
The new Local Plan is at examination, with modifications consulted on
Latest stage checked in November 2026
Middlesbrough submitted its Publication Local Plan on 30 September 2025. Examination hearings closed on 1 April 2026. The Main Modifications consultation ran from 23 September to 5 November 2026.
The consultation has closed. These documents remain part of the emerging plan process; they have not replaced the adopted framework. Check the examination outcome before relying on a proposed requirement.
Relevant emerging policy references
The Publication Plan includes NE1 on green and blue infrastructure, NE5 on biodiversity and geodiversity, NE6 on important sites and NE7 on BNG. NE8 addresses nutrient neutrality and water quality.
Read these with the modification schedule. In particular, MM79 proposes changes to NE7. An assessment should distinguish this emerging delivery approach from the statutory rules already in force.
Local Nature Recovery Strategy
Tees Valley’s nature recovery strategy is still emerging
TVCA leads the strategy
The Tees Valley LNRS page identifies Tees Valley Combined Authority as the responsible authority. The published programme records draft consultation from 10 September to 11 October and anticipates publication in December 2026, subject to Cabinet approval.
As reviewed on 11 November 2026, treat the strategy as emerging. An anticipated publication date is not proof that a final statutory strategy has been published.
Use draft evidence without overstating its status
Draft priorities can help identify possible restoration and connectivity opportunities. Check the actual parcel, habitat measure and delivery constraints before incorporating them into a design.
For strategic significance, apply the current metric rules for the strategy’s actual status. Agree the relevant local evidence with the deciding authority. Recheck the calculation if publication occurs during the application or gain-plan process.
Middlesbrough ecology
Becks and post-industrial habitats shape local survey priorities
The council’s March 2026 Biodiversity Duty Report records a varied local ecological network. These examples help scope investigation; they do not establish the habitats or species on an individual plot.
| Local setting | Evidence to investigate |
|---|---|
| Bluebell Beck and Berwick Hills / Ormesby Beck | Grassland, reedbed and riparian connections; assess relevant species and effects of crossings or drainage. |
| Marton West Beck, Newham Beck and Fairy Dell | Wooded banks and connected habitat; investigate lighting, access and edge effects. |
| Maze Park and Middle Marsh | Established post-industrial grassland and habitat mosaics; classify actual vegetation rather than assuming cleared or low-value land. |
| Stainsby Wood and surrounding land | Woodland boundaries, buffers and habitat connections; check any irreplaceable habitat implications. |
| Hemlington Lake and urban green spaces | Water-edge vegetation, trees, public use and practical access for management. |
Survey methods and timing should follow the actual features and likely effects. Keep historic species records distinct from current survey findings.
Regeneration and design
Use the green and blue infrastructure evidence to improve the layout
A connected network, not isolated planting
The council’s evidence library provides the Green and Blue Infrastructure Strategy 2021–2037, green-wedge study and local wildlife-site evidence. These can inform the context and connections around a proposal.
For a beck-side scheme, consider how habitat continuity survives access routes and drainage works. In a dense urban scheme, test rooting space, shade, rainwater management and maintenance access together.
Middlehaven and town-centre regeneration
Check the Development Corporation boundary before selecting the application route. Then reconcile existing habitat with the intended redevelopment, public realm and construction sequence.
Previously developed land can contain important habitat. A demolition or remediation programme should follow appropriate ecological evidence. Keep any contamination treatment and habitat creation assumptions consistent in the landscape plan and metric.
Protected sites and water quality
BNG and nutrient neutrality answer different questions
Teesmouth and Cleveland Coast interests
Screen for credible effects on the internationally protected Teesmouth and Cleveland Coast interests. Relevant pathways can include water quality, construction disturbance and changes in use or access.
The competent authority’s Habitats Regulations Assessment is separate from the biodiversity metric. Identify what evidence and mitigation the actual proposal needs rather than applying a generic town-wide conclusion.
Check the council’s nutrient-neutrality route
Middlesbrough’s nutrient-neutrality guidance addresses nitrogen reaching the River Tees. It identifies certain developments creating additional overnight accommodation as the main focus of the assessment.
Confirm the current scope, wastewater assumptions and mitigation route for the proposal. Nutrient credits and biodiversity units are different products. Buying one does not demonstrate compliance with the other requirement.
Planning submission evidence
Use the validation requirements of the deciding authority
For council applications, start with the Middlesbrough application page and checklist. For Development Corporation land, use its 19 May 2026 validation checklist, including section 8 on BNG.
| Evidence | Purpose |
|---|---|
| Applicability and baseline date | Explain the statutory position, any exemption and any justified earlier baseline date. |
| Habitat plan and condition records | Show measurable parcels, north point and the evidence behind the classification. |
| Metric workbook | Identify the version and reconcile baseline, retained, enhanced and created habitat. |
| Site history and irreplaceable habitat | Address degradation and relevant earlier evidence; describe any irreplaceable features. |
| Proposed design and delivery route | Demonstrate how the scheme can meet the gain requirement with realistic habitat targets. |
The Development Corporation checklist specifically requests an Excel metric with onsite pre- and post-development delivery sections. Read older guidance alongside current national exemptions, which changed after that checklist was issued.
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.
After permission
Turn the proposed gain into an enforceable management plan
Gain-plan approval and related conditions
Where mandatory BNG applies, obtain Biodiversity Gain Plan approval before commencement. The Development Corporation BNG guidance also explains evidence for gain plans and phased development.
Check each permission for separate ecology, landscaping, drainage and construction conditions. Keep a clear approval record so that a gain plan is not mistaken for permission to start all works.
Long-term delivery needs a named owner
Significant onsite enhancements and offsite gains need the required long-term security. Identify who establishes the habitat, carries out maintenance and provides monitoring reports.
A habitat management and monitoring plan should set targets, tasks, review points and remedial action. Check that access and funding remain workable after land transfers or changes of contractor.
Off-site biodiversity units
Nunthorpe provides a documented nearby habitat-bank example
Wild Capital’s Nunthorpe / Wild Tees evidence
Wild Capital’s current project directory lists Nunthorpe in the Tees Lowlands, with ditch and neutral-grassland habitat and coverage referring to Redcar and Cleveland and Middlesbrough.
A published Wild Tees allocation summary identifies gain-site reference BGS-091024001. It records an allocation involving orchard and mixed-scrub habitat. Treat that as evidence of a transaction, not a statement of stock still available.
Check the registered parcel, not just the supplier’s area
The project name, commercial coverage and registered gain-site boundary can describe different things. Confirm the exact parcel, authority, habitat category and spatial treatment for the proposed purchase.
Check the official biodiversity gain-site register, legal security and allocation route. Obtain a dated quotation and delivery evidence. No current Middlesbrough unit price or guaranteed availability is asserted here.
Practical procurement evidence
Track the proposed local delivery hierarchy
Emerging NE7 and modification MM79
The Main Modifications schedule proposes a local sequence for offsite BNG under NE7. It favours designated wildlife sites in Middlesbrough, then other borough land, before wider Tees Valley and neighbouring strategy areas.
The proposed wording also addresses evidence of efforts to secure an appropriate location. This is an emerging policy direction, not a substitute for current statutory metric rules.
Use the hierarchy to organise an evidence trail
After testing a credible onsite layout, record the remaining shortfall and the locations considered for offsite delivery. Explain habitat suitability, availability and any constraints on the preferred options.
This creates a useful record for discussion with the planning authority. Keep local policy preference, metric spatial adjustments and supplier terms separate. Each can affect the final delivery decision.
Real local planning evidence
Turford Avenue shows why a percentage alone is not enough
Application 25/0190/MAJ
The 9 October 2025 planning committee report considered ten bungalows at the former Turford Avenue Social Club. It reported a proposed onsite gain of 16.37%, including habitat provision beside Plot 10.
Officers also discussed a legal agreement for monitoring fees and a maintenance plan. This is a dated assessment of the proposal; it does not establish that the habitat has since reached its target condition.
The lesson for a new scheme
A calculation must connect to identifiable land, a workable specification and management responsibilities. Check that small habitat areas remain deliverable after access, utilities and landscaping are finalised.
Agree monitoring arrangements early enough to support the permission and subsequent gain plan. Ask for the relevant decision and approved documents when using another scheme as a precedent. No ACP involvement is claimed in this example.
BNG financial planning
Separate monitoring, unit purchases and nutrient mitigation in the budget
The Turford Avenue report illustrates a project-specific approach to monitoring funding. No current universal Middlesbrough BNG monitoring tariff or fixed legal charge was verified for this guide. Obtain a written calculation from the deciding authority.
| Cost category | What to establish |
|---|---|
| Ecological assessment and metric | Survey scope, condition assessment, design iterations and reporting. |
| Council or Corporation monitoring and legal work | The project-specific contribution, legal mechanism, payment trigger and any separate agreement costs. |
| Habitat establishment and maintenance | A funded programme for delivery, reporting and remedial work over the secured period. |
| Offsite biodiversity units | Habitat category, quantity, spatial treatment, allocation terms and applicable tax. |
| Nutrient mitigation | Any separately calculated nitrogen requirement and the appropriate mitigation evidence. |
| Statutory biodiversity credits | The separate national last-resort route and current published price schedule. |
Use our off-site biodiversity unit guide when comparing offers. A quoted unit price cannot stand in for the whole project’s ecological delivery budget.
Your next steps
A practical Middlesbrough planning evidence checklist
- Identify the deciding authority
Check the Development Corporation boundary and record the correct application route and adopted policy references.
- Establish habitats and site history
Survey the actual land, condition and relevant species; address earlier baseline evidence and irreplaceable habitat.
- Separate the ecological requirements
Identify BNG, protected-site assessment and any nutrient mitigation needed for the proposal.
- Coordinate the design and metric
Align habitat plans with drainage, remediation, access and landscape drawings, using realistic targets.
- Verify the delivery land
Confirm offsite registration, habitat compatibility, spatial treatment and allocation evidence where units are required.
- Secure and fund long-term management
Agree the gain plan, legal arrangements, management responsibility, monitoring contribution and remedial approach.
Project support
BNG assessment and planning support for Middlesbrough
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
Middlesbrough Biodiversity Net Gain FAQs
Does Middlesbrough Council decide every application in the town?
No. Middlesbrough Development Corporation has planning powers within its mapped Mayoral Development Area. Middlesbrough Council remains responsible for preparing the borough Local Plan. Check the red-line boundary before choosing the application route.
Is the new Middlesbrough Local Plan adopted?
As reviewed on 11 November 2026, the replacement plan remains at examination. Consultation on Main Modifications ran from 23 September to 5 November 2026. Use the adopted framework and identify emerging policies separately.
Which adopted policies are relevant to BNG design?
Core Strategy CS4 addresses environmental assets, CS20 green infrastructure and CS21 the Green Blue Heart. Read them with the surviving development-plan provisions, relevant neighbourhood policies and the actual site map.
Has the Tees Valley LNRS been published?
The TVCA programme reviewed on 11 November 2026 still describes an emerging strategy, with publication anticipated in December 2026 subject to approval. Check its actual status before applying published-LNRS metric rules.
Does a brownfield site need a habitat survey?
It may. Previously developed land can contain grassland, scrub, trees or important habitat mosaics. Survey the actual features and condition rather than assuming the site has negligible ecological value.
Are nutrient credits the same as biodiversity units?
No. Nutrient mitigation addresses a separately assessed water-quality effect. Biodiversity units measure habitat outcomes through the statutory metric. A proposal can need evidence for both requirements.
Can I buy BNG units from the Nunthorpe area?
Potentially, subject to the correct habitat category, available units, trading rules and legal allocation. Confirm the exact registered parcel and its spatial relationship to the development; a supplier’s place name alone is insufficient.
Does emerging NE7 require a local offsite search?
The emerging policy and proposed MM79 modification set out a local delivery sequence and supporting evidence expectations. Check their status and weight with the planning authority alongside the current statutory framework.
Is there a fixed Middlesbrough monitoring charge?
A universal current tariff was not verified for this guide. Obtain a project-specific calculation from the deciding authority and separate it from consultant fees, habitat management, unit purchases and legal costs.
What should I provide for a Middlesbrough BNG quotation?
Send the red-line plan, site address, proposed layout and planning stage. Include the deciding authority, existing ecology reports, drainage information, relevant council comments and any proposed unit purchase.
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
Start with the information you have. We ask for your email, site location and enquiry, with a telephone number at the final step.
We use your details to respond to your enquiry. Read our Privacy Policy.
Middlesbrough BNG
Sources and references
Reviewed 11 November 2026.
Planning, nature recovery and delivery sources
- Middlesbrough current planning framework
- Adopted Core Strategy — February 2008
- Middlesbrough Development Corporation — boundary and planning powers
- Council planning application requirements
- Development Corporation validation checklist — May 2026
- Development Corporation BNG guidance
- Publication Local Plan — submission information
- Main Modifications consultation — closed 5 November 2026
- Main Modifications schedule — including MM79 / NE7
- Tees Valley LNRS — current programme
- Middlesbrough environmental evidence library
- Middlesbrough Biodiversity Duty Report — March 2026
- Council nutrient-neutrality guidance
- Wild Capital habitat-bank directory
- Published Wild Tees allocation summary — BGS-091024001
- Planning committee report — 9 October 2025
- National BNG exemptions
- Statutory biodiversity metric tools and guidance