Decision Framework
A Site-Selection Method Is More Than a Scorecard
The methodology should explain the sequence of decisions, evidence inputs, treatment of constraints and role of judgement from long list to preferred plan.
Obtain the methodology, assessment templates, scoring definitions, source data, consultation updates and final site-selection report. Earlier versions matter where criteria or weights changed during plan preparation.
Map the stages. A site may fail an eligibility threshold before sustainability appraisal, be rejected by a policy sieve, receive adverse technical scores or pass all assessments but not be selected because of the spatial strategy. Identifying the exit point prevents the wrong argument being made.
Separate methodology design from application. A threshold may be lawful and rational, but the authority may have used the wrong site area or ignored a feasible access. Conversely, correcting a factual error may not help if the spatial strategy independently excludes that location.
Methods should be proportionate. Councils are not expected to prepare application-level evidence for every site, but they should identify a wide range of land, assess relevant constraints and explain departures from guidance or their own process.
The final selection normally involves planning judgement. The audit should therefore examine not only mathematical results but also the narrative explaining how strategic benefits, cumulative effects, infrastructure and deliverability influenced the decision.
Find the precise stage at which the site was screened out. A representation aimed at the wrong stage can be accurate but irrelevant.
Methodology Audit
Six Documents or Questions to Assemble First
A complete audit requires the rules, inputs and final reasoning—not only the summary score for the promoted site.
Published Methodology
Obtain definitions, thresholds, weights, source data and rules for mitigation or uncertainty.
Site Assessment Sheet
Check boundary, capacity, use, evidence date, scores and narrative conclusion.
Stage-by-Stage Record
Identify every sift or decision and the stage where the site ceased to progress.
Alternative-Site Results
Review how the same criteria were applied to preferred and rejected comparators.
Evidence Updates
Track whether criteria, source data or technical reports changed after consultation.
Decision Narrative
Read the officer and committee explanation for the final portfolio and professional judgement.
Typical Structure
The Main Stages in a Site-Selection Methodology
Although terminology varies, most authorities move through eligibility, constraint, comparative and deliverability stages.
The long list may include Call for Sites submissions, council-owned land, existing allocations, brownfield opportunities and sites identified through desktop review. The authority may apply a minimum size threshold or separate housing, employment and other uses.
Initial sieves can remove duplicate, unavailable, too-small or clearly incompatible sites. Strategic sieves may reflect settlement hierarchy, national designations, Green Belt or an adopted spatial option. The methodology should explain whether the criterion is absolute or a factor for later balance.
Detailed assessment usually considers access, flood risk, landscape, ecology, heritage, services, infrastructure and development potential. Sustainability appraisal may run alongside or build on this evidence. Availability, achievability and delivery timing are then reviewed.
The final portfolio balances scores with strategy, infrastructure, cumulative effects, settlement capacity and supply requirements. Reserve or contingency sites may be identified where delivery uncertainty remains.
Long List
Identify the broad universe of potential sites.
Eligibility
Remove duplicates, invalid submissions and sites below thresholds.
Strategic Sieve
Apply settlement and policy choices.
Detailed Assessment
Review planning, environmental and technical effects.
Delivery Review
Test availability, viability, infrastructure and timing.
Portfolio Selection
Choose a balanced and explained set of allocations.
Scoring and Judgement
How Red-Amber-Green Ratings and Weighted Scores Should Be Read
Scores are shorthand for evidence. They are only as reliable as the definitions, inputs and treatment of uncertainty behind them.
Check what each colour or number means. An amber score may mean moderate harm, an unresolved information gap or an impact capable of mitigation. Those are materially different conclusions and should not be treated as equivalent without explanation.
Review weighting. A council may give strategic accessibility greater weight than a localised landscape effect, or treat certain constraints as pass/fail. Weighting involves judgement, but it should align with the plan’s objectives and be applied consistently.
Check aggregation. Adding scores can conceal an absolute constraint or allow several minor positives to offset a major adverse effect. Some methods therefore combine totals with professional review. The reasoning for any override should be recorded.
Test sensitivity. If a small change in one assumption reverses the ranking, the authority should understand that uncertainty. Landowner evidence can be most valuable where it converts an assumed adverse score into a confirmed mitigable position.
- Clear definition for every score or colour
- Transparent weights and thresholds
- Consistent evidence date and source
- Distinction between harm and missing information
- Rules for mitigation and revised boundaries
- Treatment of cumulative and strategic effects
- Recorded professional judgement or override
- Sensitivity of the result to uncertain assumptions
Testing Robustness
Where Site-Selection Methods Commonly Go Wrong
A material flaw may arise from the method itself, inconsistent application or an inadequate explanation of the final choice.
A rigid early sieve can exclude a reasonable alternative before its effects or mitigation are assessed. This is particularly important where the threshold is not required by policy or conflicts with the authority’s stated objectives.
Double counting can exaggerate harm. For example, remoteness may be scored under settlement hierarchy, access to services, transport and carbon without recognising that the same underlying issue drives each result. Conversely, one strategic benefit may be counted several times.
Inconsistent boundaries or capacities can distort comparison. A preferred site may be assessed at a reduced developable boundary while an alternative is rejected on its full unconstrained acreage, or different density assumptions may be used without explanation.
The final judgement may also be too opaque. A table can show scores, but the plan should explain why the selected combination is appropriate, how alternatives were considered and how delivery risks were balanced.
Premature Sift
Reasonable land excluded before meaningful assessment.
Double Counting
One issue unfairly drives several adverse scores.
Boundary Mismatch
Different gross or net site areas are compared.
Mitigation Asymmetry
Solutions accepted for preferred sites but ignored for alternatives.
Evidence Asymmetry
Different levels or dates of information produce the result.
Opaque Override
Professional judgement changes the ranking without adequate reasons.
A methodological criticism should show that the flaw could have affected the plan outcome. Minor imperfections with no material consequence rarely establish unsoundness.
Landowner Response
How to Use the Methodology in a Representation
Mirror the council’s process, correct the inputs and state the revised outcome sought.
Set out a concise audit table: methodology criterion, council conclusion, evidence relied on, landowner evidence, corrected conclusion and plan consequence. This allows the authority to follow the requested change without reading every report first.
Where the problem is a factual input, provide the source and corrected score. Where it is professional judgement, explain the relevant policy, comparative evidence and mitigation. Where it is the methodology design, identify why the criterion is irrational, disproportionate or inconsistent with guidance.
Do not invent a wholly new method unless necessary. A representation is often more effective when it demonstrates that the promoted site performs differently under the council’s own rules.
Connect the audit to the remedy. Ask for reassessment, movement to the next stage, recognition as a reasonable alternative, inclusion as a reserve site or allocation, depending on the plan stage and remaining evidence.
- Criterion-by-criterion audit table
- Corrected site plan and capacity
- Evidence supporting each disputed conclusion
- Comparable treatment of selected sites
- Material effect on ranking or portfolio
- Precise reassessment or plan change requested
Methodology Audit
Test the Rules, Inputs and Decision Trail Separately
A methodology can appear comprehensive while still producing unreliable results because the wrong data, threshold or discretionary judgement was used at a critical stage.
Start with the adopted or published version of the methodology and identify when it was approved. Councils sometimes revise criteria between options, preferred sites and publication. Compare versions and record changes to thresholds, weighting, settlement categories and absolute constraints. A later change may be legitimate, but the authority should explain it and apply it consistently.
Map the sequence of sieves. A site excluded at an initial policy or size threshold may never receive detailed sustainability or infrastructure assessment. Establish whether that early criterion is justified and whether exceptions were permitted. A defect at the first sieve cannot be cured by debating scores assigned at a later stage the site never reached.
Review the data inputs criterion by criterion. Check mapping resolution, source date, buffers, site boundaries, capacity, settlement distances and whether a constraint affects the whole parcel or only part. Automated GIS screening can be useful, but a binary result may misrepresent topography, route quality, existing rights or mitigation that requires professional judgement.
Examine how uncertainty is handled. Some methodologies score an unknown matter negatively; others use neutral or amber ratings pending evidence. If the authority penalised the promoted site for missing information but assumed mitigation for selected sites, identify the different evidential standards and the material effect on progression.
Finally, trace the transition from technical score to planning judgement. Officer moderation, settlement workshops, infrastructure discussions and political decisions may change the shortlist. The methodology should explain who made those judgements, what evidence was considered and why a site with a particular score was included or excluded.
Version Control
Identify the methodology used at each plan stage and any material changes.
Sieve Sequence
Record the exact stage and criterion at which the site was removed.
Data Quality
Check source, date, scale, boundary and whether the information is site-specific.
Threshold Logic
Test absolute exclusions, buffers and scoring bands against policy and evidence.
Uncertainty Treatment
Compare how missing information and assumed mitigation were handled.
Professional Judgement
Locate and test the reasons for moderation beyond the raw score.
Audit the method before arguing the outcome. A representation that identifies the precise rule or input producing the error is easier to answer and remedy.
Sensitivity and Remedy
Show Whether the Defect Actually Changed the Site-Selection Result
Not every scoring error is material. Sensitivity testing demonstrates whether a corrected assumption would move the site through a threshold or alter the preferred portfolio.
Recalculate the relevant criterion using the council’s own method and the corrected evidence. Then show the effect on the stage result, total score or category. If the site remains excluded for an independent reason, acknowledge that and address it separately. This avoids overstating a minor error as determinative.
Test reasonable ranges rather than one preferred number. Access capacity, dwelling yield, landscape sensitivity and infrastructure cost may not be fixed at plan stage. Showing that the site performs acceptably across a credible range can be more persuasive than relying on an optimistic single assumption.
Check whether weighting magnifies double counting. A landscape designation, countryside policy and visual sensitivity may all reflect related effects. Separate criteria can be justified, but the methodology should not penalise the same harm repeatedly while counting a benefit only once without explanation.
Consider portfolio sensitivity. Correcting one score may not change the strategy if the housing requirement is already met, but it could support a reserve site, alternative distribution or contingency. Quantify how the site contributes to supply, settlement need, early delivery or infrastructure and identify the plan decision that should be revisited.
Propose a procedural remedy suited to the stage. The council may need to correct the database, reassess the site, publish an addendum, revisit the shortlist, appraise an alternative or modify the plan. Do not demand a final allocation where the immediate defect requires only a fair reassessment; explain the later decision that should follow if the corrected site performs well.
Corrected Score
Apply the published method transparently to the revised evidence.
Range Test
Show performance under realistic low, central and high assumptions.
Double-Counting Review
Identify overlapping criteria and their cumulative weighting.
Threshold Effect
Explain whether the correction changes progression to the next stage.
Portfolio Effect
Relate the site to housing supply, distribution, timing and contingency.
Stage-Appropriate Remedy
Request correction, reassessment, appraisal or modification in the right sequence.
Materiality is central. A demonstrated error plus a clear change in outcome is considerably stronger than identifying an imperfect method with no effect on the plan.
Version and Audit Control
Preserve the Methodology Record as the Plan Evolves
Changes between drafts can be material. The landowner should retain the version applied, the data supplied and the council response at every stage.
Save each methodology, assessment table, GIS output and consultation version with its publication date. Record when the site boundary, capacity or evidence changed. A later score cannot be audited reliably if the earlier rule or data source has disappeared from the council website.
Maintain a change log showing the criterion, previous result, new result, reason and effect on progression. Distinguish a correction requested by the landowner from a council-wide methodology revision. This helps demonstrate whether the site was reassessed consistently when new rules were introduced.
At the next consultation, answer the current methodology while preserving unresolved concerns about earlier exclusion where they remain material to reasonable alternatives or soundness. Do not rely on an obsolete table if the plan now uses a revised method, but explain any unfair consequence that carried forward.
Before finalising the representation, ask someone who did not prepare the original submission to reproduce the result from the published method and evidence. If they cannot reach the same score or sift outcome, identify which definition, input or discretionary step prevents replication. An independently reproducible audit is especially useful where the council says the methodology was applied consistently but the published record does not show how the judgement was reached.
- Published methodology and revision date
- Site sheet and GIS output used
- Boundary, capacity and evidence version
- Criterion-by-criterion change log
- Council response and reassessment outcome
- Effect on shortlist and preferred strategy
Good version control turns a general complaint about moving goalposts into a precise record of what changed and why it matters.
How Value My Land Can Help
Identify Exactly Where the Site-Selection Process Failed Your Land
Value My Land can reconstruct the council’s site-selection process, identify the exit point for the promoted site and test the methodology and inputs against comparable sites.
We can help distinguish a correctable factual error, a technical evidence gap, a strategic exclusion and a material methodological defect.
The result is a focused representation that requests a usable reassessment or plan change rather than a general complaint about scoring.
Our Initial Review Can Include
- Review of methodology versions and assessment stages
- Audit of site boundary, capacity, scores and source data
- Comparison with preferred and rejected sites
- Identification of double counting or inconsistent mitigation
- Preparation of corrected assessment outcomes
- Advice on representations, soundness and requested remedy
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 Local Plan Site-Selection Methodologies Explained
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.
If the published method has resulted in an adverse site outcome, see Site Rejected by a HELAA or SHLAA? What to Do Next.
How Councils Compare Competing Sites
Apply the method to a direct site-to-site comparison.
Read guideSite Discounted From Local Plan Allocation
Use the audit after an adverse selection decision.
Read guideSustainability Appraisal and Reasonable Alternatives
Understand the related but distinct appraisal process.
Read guideWhat Is a HELAA or SHLAA?
Review the land availability evidence feeding site selection.
Read guideSustainable, Available and Achievable Sites
Understand core suitability and delivery tests.
Read guideLocal Plan Allocation Guide
Place methodology within the wider plan process.
Read guideHow to Demonstrate a Local Plan Is Unsound
Assess whether a material flaw affects soundness.
Read guideWhy Every Land Parcel Must Be Assessed Individually
See why boundaries and site-specific evidence matter.
Read guidePlanning Policy and Development Land
Review the policy framework shaping methodology choices.
Read guideFrequently Asked Questions About Local Plan Site-Selection Methodologies
Is there one national site-selection methodology?
No. National policy and guidance set expectations, but councils design proportionate local methods. The authority should explain its approach and apply it consistently using suitable evidence.
Can a council use pass/fail criteria?
Potentially, especially for eligibility or constraints considered decisive. The criterion should be rational, aligned with policy and not prematurely exclude reasonable alternatives without adequate assessment.
Are red-amber-green scores objective?
They provide a structured shorthand but still depend on definitions, data and professional judgement. Read the narrative and evidence behind the colour rather than treating it as a fact in isolation.
Can the council change its method during plan preparation?
It can refine the process, but material changes should be explained and applied fairly. Review whether earlier and later sites were assessed on a comparable basis and whether consultation was affected.
What is double counting?
It is where the same underlying effect influences several criteria in a way that disproportionately changes the outcome. Multiple criteria are not automatically wrong, but the combined effect and rationale should be understood.
Should mitigation be scored?
A proportionate methodology should recognise realistic mitigation or at least distinguish an unresolved issue from an unavoidable impact. The amount of detail required depends on the plan stage and site.
Can a scoring flaw make the plan unsound?
Potentially where it is material to the strategy or allocation portfolio and affects the appropriateness or evidence for the plan. Minor errors that do not change the result are less likely to be decisive.
What if my site was excluded before sustainability appraisal?
Examine whether it was a reasonable alternative and whether the early sieve was justified. A lawful process does not have to appraise every imaginable site, but it should not use an irrational threshold to avoid assessing a realistic option.
What remedy should I request?
Request the step supported by the audit: factual correction, rescoring, progression to detailed assessment, appraisal as a reasonable alternative, reserve status or allocation. Explain the plan-stage implications.
How can Value My Land help?
We can reconstruct the method, compare the evidence, identify material inconsistencies and help present a corrected assessment and precise remedy.
Do You Understand Why Your Site Fell Out of the Selection Process?
Send us the methodology, site sheet and Local Plan evidence. We can identify the decisive stage and whether a correction or focused challenge is justified.
Request Your Free Land Review