What Can I Build? Explorer
Use this tool when you are still exploring possibilities rather than validating one measured scheme. It helps you move from a simple property setup into a shortlist of project types that are worth checking next, without drowning you in legal detail.
Explore What Could Fit
Choose the property type, describe the amount of space, add any obvious features or local sensitivity, then explore the most likely project options.
What This Tool Is Good For
What it answers well
It helps you move from a vague idea like 'what could we do with this house?' into a shortlist of project types that usually make sense for this setup.
What it does not try to do
It does not replace measured project checks, local verification or the stricter route-based logic in the decision engine.
Best next move
Pick the project option that feels closest to your goal, then open the guide or run that option through the Planning Decision Engine for a deeper check.
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 what can i build? explorer a final answer?
No. What Can I Build? Explorer is built to narrow the planning question quickly, not to replace the project guide, local authority layer 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 Planning Decision Engine 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.
Questions This Tool Is Best At Narrowing
- What can I build on this property?
- What project type looks most realistic here?
- Should I start with an extension, loft or outbuilding?
- Which home improvement options are worth checking next?
How This Tool Fits Into The Wider Planning Process
What Can I Build? Explorer 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.
Need A More Tailored Steer Than The Tool Result?
If what can i build? explorer 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 broad guidance has helped, but the answer still turns on facts that are unique to your property or proposal.
What the reply aims to do
The reply aims to narrow the likely route, flag the tripwires that matter most, and tell you which verification step is safest before more money is spent.
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.
FAQ Pages Worth Opening After The Tool
Planning Permission Vs Permitted Development
Open this when the shortlist is narrowing but the approval route still feels mixed.
Read answerWhat Counts As The Original House?
Useful when site history and previous additions may change what is still realistic.
Read answerIs Pre-Application Advice Worth It?
Useful when one option is starting to look serious enough that early council feedback may be worth the time.
Read answerDetailed Guidance Worth Opening Next
Planning Decision Engine
Use this once one of the explorer options starts to look serious and you want a stricter route check.
Open guidePlanning Rejection Risk Analyzer
A strong follow-on if you are already leaning toward a particular scheme and want to stress-test refusal risks.
Open guideHouse Extensions
Useful when your shortlist is pointing toward extensions rather than roof or outbuilding options.
Open guideLoft Conversions
Open this if roof space is one of the clearest opportunities the explorer is surfacing.
Open guideOutbuildings
Helpful when the result is pointing toward garden rooms and detached structures.
Open guidePermitted Development
Use this for the baseline rules behind the broad exploratory result.
Open guideUse 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 broad 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.