Editorially checkedVisible ownership, review date and official-source context for this page.
Written by Sam JonesReviewed by UK Planning Guide Editorial Review DeskLast reviewed 11 April 2026Official-source context National planning baseline, local authority context and page-specific risk points.Verify before spending Stop and verify when the proposal is close to a limit, affected by special controls or expensive to get wrong.
Planning tool

Evidence Pack Builder

Use this before commissioning drawings or asking for help. It tells you what evidence is likely to reduce uncertainty for the project and which gaps still need checking officially.

Evidence-firstGood before drawingsSaveable pack
Interactive check

Build The Evidence Pack

Choose the project, site sensitivity and current evidence stage. The output becomes a saveable prep pack.

Next step

Choose The Next Useful Step

The tool result should lead to a practical action. Save the project, check whether formal proof is worth it, estimate cost, or test readiness before using the longer guidance form.

My Planning Project

Keep A Clean Project Pack On This Device

Save the current page, print a simple pack, or copy a short summary for someone helping you decide the next move. Nothing is sent anywhere unless you choose to submit a form.

Stored in this browser only. Clear it any time from the project panel.

How to use the result

What This Tool Is Good For

What it gives you

A practical evidence list for the project, including photos, dimensions, drawings and official checks.

Why it matters

Better evidence helps users avoid paying for the wrong next step or asking a professional an under-specified question.

Best next move

Gather the pack, then run the readiness or roadmap tool with fewer unknowns.

Tool FAQ

Questions People Usually Ask After The Result

Keep this block for the interpretation and trust questions that usually appear once the tool has narrowed the answer.

Is evidence pack builder a final answer?

No. Evidence Pack Builder is built to narrow the planning question quickly, not to replace the project guide, local authority context or formal verification where certainty matters.

What details most often change the result?

Exact measurements, local controls, planning history and the detailed project design are the things most likely to change the result.

When should I verify formally?

Verify formally once the output still feels borderline, expensive to get wrong or dependent on one tight assumption.

What page should I open next?

Open Building Regulations Completion Certificates next if the result has already isolated the main issue.

Why does local context still matter after the tool?

Because conservation areas, listed buildings, Article 4, planning history and council-specific judgement can still make a familiar-looking result less reliable on a real site.

Good search matches

Questions This Tool Is Best At Narrowing

Context and caveats

How This Tool Fits Into The Wider Planning Process

Evidence Pack Builder is intended as a fast planning triage step based on common UK planning considerations and permitted development limits.

Use it to narrow the question, then move into project guides, local authority pages or formal confirmation if the scheme is close to a limit. The tool should help you spend money in the right order, not tempt you to stop checking too early.

Personalised planning guidance

Need A More Tailored Steer Than The Tool Result?

If evidence pack builder has narrowed the question but the answer still depends on your exact site, local authority area or project details, use the structured guidance form instead of relying on another broad rule of thumb.

Best for

Borderline, awkward or site-specific cases where the guides have helped, but the answer still turns on facts unique to your property or proposal.

What the reply aims to do

The reply aims to narrow the likely route, flag the details that matter most, and tell you which verification step is safest before more money goes into the project.

What to include

Property type, council area, location, the change you want to make, approximate dimensions, relevant heritage or flat-related details, previous additions and the main concern.

Important: Replies are informational personalised guidance based on the details you provide and publicly available information. They are not formal legal, architectural, surveying or council advice. Site-specific or borderline cases may still need checking with the local authority or a qualified specialist before drawings, applications or contractor spend move ahead.

Your enquiry details are used to respond to your request. Anonymised themes may be used to improve guides, tools, FAQs and site content. Identifiable case details are not published without permission, and sending an enquiry does not sign you up to marketing emails. Privacy notice.

Trust and method

Use These Tools Properly

Rules vary by location

Planning routes can change by council area, property history, designations and the exact proposal. Use this page as a structured guide to the next check, not as a blanket approval.

What this page is for

To reduce uncertainty quickly, point you to the next page that matters, and show when a broad tool result is still too weak to rely on for a live project decision.

What it does not replace

These tools do not replace formal confirmation for borderline schemes, local authority checking where special controls apply, or paid specialist input for genuinely complex cases.

How the guidance is built

Tool results are based on common planning and permitted development baselines, then framed to push you toward the project, local authority and rule pages most likely to settle the remaining doubt.

When to stop relying on general guidance

Escalate when the route only works inside a tight threshold, when local controls may be doing most of the work, or when you need written certainty before drawings, applications or contractor spend.

Safest formal next step

Use the tool result as triage, then move into the matching guide. If certainty still matters, step up to a lawful development certificate, pre-application advice or professional help rather than rerunning broad checks.

Official-source check

Where this page shows official sources, use those links near the relevant answer to confirm the latest council or national wording before relying on a borderline route.

Useful trust pages

Methodology

Planning FAQ

Updated May 2026
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