Examination Changes
Main Modifications Are Remedies, Not General Improvements
The proposed change must relate directly to a problem that prevents the submitted plan from being sound or legally compliant.
Distinguish main modifications from additional modifications. Main modifications are those necessary to address examination defects. Additional modifications are minor or non-soundness changes the council may choose to make, such as factual corrections, and are not recommendations required for adoption.
The Inspector’s preliminary findings, hearing discussions or action notes may reveal the issue. Common examples include insufficient housing supply, unrealistic phasing, an undeliverable strategic allocation, inadequate policy wording or failure to address an infrastructure requirement.
A landowner should first prove the defect and then explain why the site is part of the proportionate remedy. Merely showing that the land is suitable does not make its allocation necessary.
The procedural implications can be significant. A new or materially altered allocation may require sustainability appraisal, habitats assessment, technical evidence, policy wording, mapping and public consultation before the Inspector can reach final conclusions.
Timing and prior promotion matter. A site already submitted, assessed and consulted upon is easier to consider fairly than land introduced for the first time after hearings.
The key question is not “could this site be allocated?” but “is this change necessary to cure the defect identified at examination?”
Opportunity Review
Six Questions to Test a Main-Modification Opportunity
Use these questions before investing in a late-stage allocation package.
What Defect Has Emerged?
Identify the Inspector’s or council’s soundness concern and the evidence supporting it.
What Scale of Remedy Is Needed?
Quantify the homes, employment land, infrastructure or policy change required.
Is the Site Already in the Record?
Confirm prior submission, appraisal, representations and assessment history.
Can It Deliver the Remedy?
Demonstrate capacity, timing, access, ownership, infrastructure and viability.
Can It Be Assessed Fairly?
Identify sustainability appraisal, habitats, consultation and evidence requirements.
Is Allocation Necessary?
Compare alternative remedies such as phasing, reserve sites, policy changes or further review.
When Opportunities Arise
Examination Problems That May Require New or Replacement Land
The need for a site modification must flow from a material failure in the submitted strategy or allocation portfolio.
A housing trajectory may fall below the requirement after delivery rates, lead-in times or lapse assumptions are corrected. The plan may then need additional supply or contingency, particularly in an early part of the plan period.
A preferred allocation may be found undeliverable because access, ownership, infrastructure, viability or environmental constraints cannot be resolved at the time assumed. Replacement, reduced capacity or reserve land may be considered.
The spatial strategy may fail to provide for a settlement, housing type or cross-boundary need. A site can be relevant where it helps correct that specific distributional defect rather than simply adding generic supply.
A policy change may unlock land without naming a new allocation, for example an amended settlement boundary, reserve mechanism or revised phasing. The landowner should consider the full range of remedies.
- Housing or employment supply shortfall
- Preferred allocation deleted or reduced
- Infrastructure dependency cannot be resolved
- Delivery trajectory found unrealistic
- Settlement distribution or spatial strategy defect
- Need for reserve or contingency supply
- Green Belt or safeguarded-land boundary change
- Policy wording prevents an otherwise sound outcome
Evidence Package
What a Replacement or Additional Site Must Demonstrate
The examination cannot cure one delivery problem by introducing another uncertain allocation.
Provide a clear boundary, capacity and development concept. The net developable area should allow for access, drainage, landscape, ecology, heritage, open space and infrastructure. Avoid a headline dwelling figure unsupported by layout logic.
Confirm availability. Identify all owners, tenancies, access rights, ransom risks and collaboration arrangements. Where land assembly is incomplete, explain the route and timescale to resolve it.
Demonstrate timing. Set out planning lead-in, technical work, infrastructure triggers, sales outlets and build-out. If the plan needs early supply, a site dependent on major later infrastructure may not be the necessary remedy.
Address comparative effects. The site may need an updated sustainability appraisal entry and assessment against the same methodology used for preferred sites. Be transparent about adverse effects and mitigation.
Defined Site
Boundary, use, capacity and policy wording.
Suitability
Planning and technical constraints capable of resolution.
Availability
Ownership and legal control evidenced.
Achievability
Viability and infrastructure realistically addressed.
Timing
Delivery aligns with the plan defect being cured.
Assessment
Appraisal and consultation can be completed fairly.
Procedural Fairness
Why Appraisal and Consultation Matter
A late allocation affects communities, landowners, infrastructure providers and the environmental assessment of the plan.
The authority may need to prepare an appraisal addendum comparing the site with reasonable alternatives and assessing the effects of the proposed modification. Habitats or other statutory assessment may also be required depending on the location and change.
Consultation should provide enough information for meaningful representations. A site cannot fairly be introduced through an obscure schedule without a clear boundary, policy and supporting evidence.
The Inspector considers responses before finalising recommendations. The landowner should answer substantive objections with evidence but should not assume that consultation is merely procedural confirmation of an agreed allocation.
Where the work needed would fundamentally rewrite the strategy or exceed a proportionate examination remedy, the Inspector may conclude that the issue belongs in a new plan rather than main modifications.
- Clear proposed modification schedule
- Policies map and site boundary
- Updated sustainability appraisal
- Habitats or other statutory assessment where required
- Site-selection and technical evidence
- Public consultation and response process
- Inspector’s final necessity assessment
A site opportunity that cannot be appraised and consulted on fairly may be unsuitable for the main-modification stage even if the land has planning potential.
Strategic Response
How Landowners Should Engage With Proposed Modifications
Monitor, respond quickly and stay tied to the examination issue rather than submitting a general promotional update.
Track hearing notes and council responses before the formal modification consultation. If a selected site is failing, prepare an updated evidence summary and contact the council through the proper examination channels, recognising that the Inspector controls procedure.
At consultation, state whether the proposed modification makes the plan sound. If your site is proposed, support the change while addressing delivery and appraisal objections. If another site is proposed, test whether it genuinely cures the defect and whether your land is a reasonable alternative.
Where the site is not selected, preserve the evidence for the next plan and assess whether the adopted policy position creates an application opportunity. Do not continue spending solely because a modification consultation is underway.
Review commercial arrangements. A late-stage opening may require rapid consultant work and landowner decisions. Funding, authority to submit, collaboration and the intended disposal or promotion route should be clear.
Monitor Early
Do not wait for formal consultation to understand the issue.
Update Concisely
Provide only evidence relevant to the identified defect.
Support or Object Precisely
Address whether the modification makes the plan sound.
Answer Delivery Concerns
Provide ownership, access and programme evidence.
Preserve Fallbacks
Plan for reserve status, future review or application.
Control Costs
Match expenditure to the realism of the opportunity.
Identifying a Real Opening
Distinguish an Examination Defect From a General Hope That the Site Will Be Added
A new allocation during examination is most plausible where the submitted plan cannot be made sound without additional or replacement land and the proposed change is proportionate.
Monitor the examination for a specific problem: an allocation is undeliverable, capacity is materially overstated, housing supply is insufficient, the distribution is unsupported, infrastructure cannot be funded or the sustainability appraisal omitted a necessary alternative. A general statement that the Inspector asked questions about housing does not by itself create a replacement-site opportunity.
Read hearing action notes and council responses rather than relying on reports from participants. The authority may cure a shortfall through revised assumptions, windfall evidence, increased density or another existing allocation. Identify the quantified gap and the delivery period affected before arguing that a new site is necessary.
Consider the scale of the remedy. A shortfall of twenty early homes may not justify a large strategic allocation requiring new infrastructure and Green Belt alteration. Conversely, failure of a strategic site cannot necessarily be cured by several small parcels if the plan needs a school, employment land or long-term growth location. Match the site to the defect.
Assess procedural feasibility. A new allocation may require sustainability appraisal, habitats assessment, transport and infrastructure evidence, changes to the policies map, consultation and opportunity for affected parties to respond. The Inspector will consider whether that work can be completed fairly and proportionately without turning examination into preparation of a different plan.
Recognise that the council normally has a central role in preparing proposed main modifications. A landowner can present evidence and suggested wording, but should not assume the Inspector will design and appraise the allocation independently. Engage transparently through the examination process and keep the programme officer informed only in accordance with published directions.
Defined Plan Defect
Identify the allocation, supply or strategy problem recognised in examination.
Quantified Requirement
Show the amount, location and delivery period of additional land needed.
Proportionate Site
Match scale, infrastructure and timing to the defect being cured.
Assessment Feasibility
Identify appraisal, consultation and technical work needed for fairness.
Council Route
Understand how the authority would prepare and support the modification.
Examination Evidence
Rely on published letters, action notes and documents rather than speculation.
Main modifications are a cure for a submitted-plan defect. They are not a reserve Call for Sites in which every omitted parcel is reconsidered from the beginning.
Modification-Ready Site
Prepare the Minimum Evidence Needed for a Fair and Deliverable New Allocation
A site that may need to enter the plan late must be capable of rapid appraisal without asking the Inspector or council to accept unresolved fundamentals.
Maintain an accurate site plan, landowner availability statement, proposed use, realistic capacity and delivery trajectory. Explain any land required for access, visibility, drainage, biodiversity or infrastructure and demonstrate control or a credible route to control. A late opportunity can disappear quickly if the boundary and ownership are uncertain.
Provide a concise constraints and opportunities plan supported by current technical notes. Prioritise safe access, flood and drainage, ecology, landscape, heritage, utilities and infrastructure. Full application-level reports may not be necessary, but the evidence should allow the council to compare the site with the standards applied to submitted allocations.
Prepare proposed policy wording. Identify the allocation boundary, indicative capacity, principal infrastructure, access, green infrastructure, delivery timing and any masterplanning requirement. Wording should retain sufficient planning flexibility while resolving the evidence issue that makes the site necessary.
Address sustainability appraisal explicitly. Show why the site is a reasonable alternative, the likely significant effects, mitigation and comparative role. If the authority publishes an addendum, review whether the boundary, capacity and evidence are correct and whether cumulative effects with the modified portfolio have been assessed.
Respond to the modification consultation on the modification, not by resubmitting every earlier representation. Support or challenge whether the change makes the plan sound and legally compliant. Where your site is included, answer objections about availability, infrastructure, deliverability and fairness rather than treating selection as final.
Consistent Boundary
Use the same red line across policy wording, appraisal and technical evidence.
Availability and Control
Confirm owners, access rights, agreements and a realistic implementation route.
Technical Summary
Address the principal constraints at a comparable and current evidence level.
Draft Allocation Policy
Set capacity, infrastructure, design and delivery requirements clearly.
Appraisal Material
Support assessment of effects, mitigation and reasonable alternatives.
Consultation Response
Explain why the proposed change does or does not cure the examination defect.
Late-stage readiness is not the same as excessive reporting. The objective is to remove the fundamental uncertainties that would prevent a fair appraisal and credible allocation.
Commercial Readiness
Ensure the Land Can Be Offered on Terms Consistent With a Rapid Modification Programme
A site cannot cure a delivery defect if ownership negotiations, access control or promoter arrangements prevent it being made available within the plan timetable.
Confirm every owner’s authority and willingness to promote the proposed boundary and development scale. Identify mortgages, tenancies, options, overage, probate or corporate approvals that could delay a sale or planning obligation. A fresh availability letter should address the specific modification and delivery period, not rely on an old Call for Sites declaration.
Review land agreements for flexibility. A promoter should have sufficient authority and funding to provide rapid evidence, while minimum price, consent or termination provisions should not make the site commercially undeliverable. Where several owners are involved, establish collaboration, access and value-sharing principles before the council relies on a combined allocation.
Prepare an indicative disposal and delivery programme from modification consultation to permission, infrastructure and first completions. Identify what can occur in parallel and which work depends on adoption. The trajectory should be evidence-based and leave reasonable contingency rather than assuming immediate application and construction.
Keep the evidence proportionate to the examination timetable. A short verified access note and current availability statement may be more useful than commissioning a full suite of surveys that cannot be completed before consultation. Rank the unresolved matters by whether they affect principle, appraisal, capacity or delivery, and tell the council what evidence is already available, what can be supplied quickly and what would properly follow at planning-application stage.
Record who will fund and commission any rapid follow-up work and obtain authority before the modification consultation starts. A council is less likely to rely on a late alternative where essential evidence depends on unresolved instructions, multiple owners or a consultant appointment that cannot meet the examination programme.
- Current owner authority and availability
- Mortgagee, tenant and third-party interests
- Promoter or developer funding and powers
- Access and multi-owner coordination
- Viability and sale-term flexibility
- Realistic permission and delivery trajectory
A modification opportunity can move quickly. Commercial and title uncertainty that would normally be resolved later may become decisive when the plan needs a credible replacement site.
How Value My Land Can Help
Assess Whether a Main Modification Creates a Real Allocation Opening
Value My Land can review examination findings, trajectories and failing allocations to identify the scale and nature of the remedy needed.
We can assess whether the promoted site is already sufficiently evidenced, what additional work is necessary and whether allocation, reserve status or another modification is realistic.
Where the opportunity is weak, we can explain the more proportionate future promotion or application route.
Our Initial Review Can Include
- Monitoring and review of examination developments
- Identification of the defect and required remedy
- Assessment of site capacity and delivery timing
- Review of appraisal and consultation requirements
- Preparation of modification representations
- Fallback promotion and application strategy
Official Planning and Legal Sources
The following official sources provide the current statutory or policy context. Always check the version and transition arrangements that apply to the particular council, plan or application.
August 2026 National Policy
How the August 2026 NPPF Changes Main Modifications and New Site-Allocation Opportunities
The final framework distinguishes the new plan-making system from legacy plans still progressing under transitional arrangements. The correct policy tests therefore depend on the legal route and stage of the particular plan rather than the consultation label alone.
Use Proportionate and Current Evidence
Policies PM8 and PM9 require proportionate evidence and a structured land assessment. Site promotion should explain suitability, availability, achievability, infrastructure and delivery without commissioning application-level work that is unnecessary at the plan stage.
Compare Reasonable Alternatives Transparently
The site-assessment record should identify consistent criteria, explain how constraints and opportunities were scored, and show why selected sites form an appropriate strategy. A representation is stronger where it traces a specific defect in the evidence or comparison rather than relying on preference alone.
Apply the Correct Soundness Tests
New-system local plans are assessed under PM15 as Positive, Appropriate, Effective, Consistent with national policy and in Conformity with any spatial development strategy. A legacy plan may continue under the policy and legal regime preserved by Annex A, so the examination basis must be stated expressly.
Check the Transition Before Quoting Policy
Plans prepared under the 2026 regulations and spatial development strategies use the August 2026 framework. Other plans may continue under the December 2024 NPPF and its transition rules. Neighbourhood plans submitted by 17 August 2026 also receive specific protection.
A landowner submission should identify the applicable plan system, policy version, evidence defect, consequence and precise remedy. References to the December 2024 NPPF should be retained only where they accurately describe a legacy or transitional plan.
Read the National Planning Policy Framework published on 17 August 2026.
Related Guides
These pages address the neighbouring issues without duplicating the specific problem covered by this guide.
What Happens at a Local Plan Examination?
Understand the stage at which main modifications arise.
Read guideHow to Demonstrate a Local Plan Is Unsound
Identify the defect that makes a modification necessary.
Read guideSite Discounted From Local Plan Allocation
Consider the omitted site’s route into a remedy.
Read guideSustainability Appraisal and Reasonable Alternatives
Review appraisal requirements for a new allocation.
Read guideRegulation 18 and 19 Representations
Understand the evidence trail before examination.
Read guideHow Councils Compare Competing Sites
Test replacement and alternative sites consistently.
Read guideLocal Plan Allocation Guide
Review the standard allocation route outside modifications.
Read guideEngland Local Plan Tracker
Monitor examinations and modification consultations.
Read guideSustainable, Available and Achievable Sites
Demonstrate that the proposed replacement is deliverable.
Read guideFrequently Asked Questions About Main Modifications and New Site Allocations
What is a main modification?
A change necessary to make the submitted Local Plan sound or legally compliant. Under the applicable procedure, the Inspector can recommend necessary main modifications where the authority has made the required request.
What is an additional modification?
A change that is not necessary for soundness or legal compliance, often a factual or presentational correction. It is generally made by the council rather than recommended as a necessary examination remedy.
Can a main modification allocate a new site?
Potentially, where a soundness or legal defect requires it and the change can be supported by evidence, appraisal and fair consultation. It is not a general opportunity for every rejected site.
Does my site need to have been promoted earlier?
Prior promotion is highly helpful because it provides an assessment and consultation trail. A wholly new site may be difficult to introduce fairly at a late stage, although the exact position depends on the defect and procedure.
What if a preferred allocation is deleted?
The council and Inspector will consider the plan-wide consequence. Capacity may be replaced, redistributed, phased differently or addressed through reserve sites. Demonstrate how your site meets the specific resulting need.
Will there be consultation?
Proposed main modifications are normally consulted on, with supporting appraisal where required. The Inspector considers representations before issuing the final report.
Can I ask for my site during the consultation?
Yes, but explain why the published modifications do not adequately cure the identified defect and why your proposed change is necessary, deliverable and capable of fair assessment.
Is a housing shortfall enough to secure allocation?
No. The site must also be suitable, available, achievable and capable of delivering in the period required. Other remedies may be more proportionate.
What evidence is most important?
A defined boundary and capacity, ownership and access control, technical constraints, infrastructure, viability, delivery programme and comparison under the plan’s appraisal and selection framework.
How can Value My Land help?
We can assess the examination defect, site fit, evidence gap and procedural requirements and help decide whether a modification representation is justified.
Has the Local Plan Examination Created a New Site Opportunity?
Send us the Inspector’s note, proposed modifications and your site evidence. We can review whether the land is a necessary and deliverable remedy or a longer-term opportunity.
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