How to Get Planning Permission Approved First Time: Lessons from a 97% Approval Rate

Getting planning permission first time starts long before you submit an application. The strongest proposals combine a clear brief, a realistic understanding of the site and a design that responds to the council’s policies. Attractive drawings help, but they cannot overcome a fundamental problem with scale, overlooking or the principle of development.

Shorplans Developments reports a 97% planning approval rate. That is a useful starting point for discussing the value of preparation, not a promise that every proposal will succeed. An overall approval rate is not necessarily a first-submission approval rate, and it does not predict the outcome for a particular property. Every application is assessed on its own merits.

For homeowners planning an extension, loft conversion or new home across London and Surrey, the practical question is this: what can you do before submission to reduce avoidable objections, missing information and redesign? Here are the checks that matter.

1. Establish the right planning route before designing

Not every project needs a full planning application. Some alterations to qualifying houses may fall within permitted development rights, subject to limits and conditions. Flats, maisonettes, listed buildings, previous planning conditions and local Article 4 Directions need separate consideration. Do not assume that a neighbour’s project proves yours has the same rights.

Where a proposal genuinely meets permitted development rules, a Lawful Development Certificate can provide formal confirmation of its planning status. This is different from asking the council to approve a design on its planning merits. Some works follow a prior approval procedure instead; that route has its own requirements and must not be confused with unrestricted permission to build.

Start with a property-specific assessment and the government’s guidance on when planning permission is required. For roof projects, see our guide to loft conversion planning permission in Hounslow, Ealing and Richmond.

2. Read the policies that actually apply to your address

A design that works in one borough may need a different approach in another. The council’s development plan, relevant supplementary guidance and the site’s constraints are more useful than a generic rule of thumb about what planners will accept.

• Check the planning history, including earlier refusals, approved drawings and conditions attached to previous permissions.
• Identify conservation areas, listed buildings, protected trees, flood constraints and any relevant Article 4 Directions.
• Read local guidance on extensions, roof alterations, materials, parking and neighbouring amenity.
• Look at nearby decisions for context, but compare the sites and reasons carefully rather than treating them as binding precedents.

A previous refusal can be particularly informative. If the council objected to an overbearing side wall, a new application should address its height, depth or position. Changing the cladding without resolving the original concern is unlikely to make a persuasive case.

3. Set a realistic brief and identify compromises early

A useful brief explains how you want to live, not simply how far you want to extend. A brighter kitchen, an extra bedroom or a better connection to the garden may be achievable through more than one layout. Starting with a fixed maximum footprint can make it harder to find a solution that balances your needs with planning constraints.

Agree your priorities with your architect before the design becomes fixed. Separate essential requirements from preferences and explore alternatives where the site is sensitive. A slightly smaller extension with a better internal arrangement can be more valuable than a larger scheme that struggles to secure permission.

4. Design for neighbours as well as your own home

Councils consider how a proposal affects neighbouring properties, including privacy, daylight, sunlight and whether its size or proximity would feel overbearing. These issues should shape the first design, not appear as an afterthought in a supporting statement.

• Show neighbouring windows, boundaries and relevant changes in ground level accurately.
• Consider whether the height and depth of an addition could dominate a neighbouring room or garden.
• Position upper-floor windows, balconies and terraces to avoid unacceptable overlooking.
• Assess daylight and sunlight where the scale or setting justifies specialist evidence.
• Discuss sensitive elements early, rather than relying on screening to solve every privacy concern.

Neighbour consultation can reveal concerns before submission and help maintain a constructive relationship. However, a neighbour’s support does not guarantee permission, and an objection does not automatically mean refusal. The council considers relevant planning issues, not simply the number of people for or against a proposal.

5. Make the drawings accurate, consistent and easy to assess

A measured survey provides the foundation for a credible application. Existing and proposed plans, elevations, roof plans and sections should tell the same story. Inconsistent heights, missing boundary information or unclear roof forms can delay assessment and undermine confidence in the proposal.

For a loft conversion, roof geometry and any relevant volume calculations matter. For an extension, sections can explain relationships with neighbouring ground levels and windows. On a constrained site, a carefully chosen drawing can answer a question more clearly than several pages of description.

Our 3D Design Configurator can help you explore the shape and approximate scale of an early idea. It is a concept tool, not a measured survey, planning assessment or substitute for application drawings.

6. Use pre-application advice where it can resolve a real risk

Pre-application advice can be worthwhile for a sensitive heritage setting, a new dwelling, an unusual design or a proposal with a difficult planning history. Its value lies in identifying the council’s likely concerns before you invest in a complete submission.

It is not always necessary for a straightforward scheme, and it adds time and may involve a fee. Ask focused questions and provide enough information for a meaningful response. Advice is generally not binding and cannot guarantee the final decision, particularly if the design, policy position or evidence changes.

7. Submit the evidence your project needs — not a generic bundle

Check both national requirements and the council’s current local validation list. Depending on the proposal, supporting material may include a planning statement, heritage assessment, tree information, flood-risk evidence, ecology information or transport details. Not every application requires every report.

Where a supporting statement is appropriate, explain how the design responds to the relevant policies and site constraints. Specific evidence is stronger than broad claims that a scheme is attractive or sustainable. If a report recommends a design change, make sure the drawings reflect it before submission.

Validation and approval are different milestones. Validation means the council has accepted the application as sufficiently complete to process; it does not mean the proposal is acceptable in planning terms. A complete submission reduces avoidable delays but still needs a sound design.

8. Stay responsive during the assessment

Submission is not the end of the process. Monitor correspondence, respond promptly to reasonable requests and keep a clear record of any agreed amendments. If an officer raises a concern, ask what the underlying planning issue is before deciding how to respond.

Some issues can be addressed through a targeted revision; others require a more substantial rethink. The council may need to reconsult on changes, and there is no entitlement to unlimited negotiation. Discuss the implications with your adviser rather than assuming every concern can be solved before the decision.

Common mistakes that weaken an application

• Copying a nearby development without checking its permission, site context or date of approval.
• Designing to the largest possible dimensions before reviewing local constraints.
• Ignoring previous refusals or assuming a new application will be assessed differently without meaningful changes.
• Submitting drawings and reports that contradict each other.
• Treating positive informal comments or a successful validation as a promise of permission.
• Starting work before confirming the necessary permissions and approvals.

Your first-time approval preparation checklist

1. 1Confirm the property’s planning history, designations and any restrictions on permitted development.
2. 2Agree the correct application route and check the council’s current submission requirements.
3. 3Commission an accurate measured survey and establish the relevant site and neighbour relationships.
4. 4Review the proposal against local policy before finalising its size and appearance.
5. 5Resolve obvious privacy, daylight, scale and heritage concerns in the design.
6. 6Obtain proportionate specialist advice where the site or proposal requires it.
7. 7Cross-check every drawing, form, certificate and supporting report for consistency.
8. 8Allow time to answer the council’s questions and review any proposed conditions.

Planning approval is not the final permission to start building

Read the decision notice carefully. Planning conditions may require further details to be approved before particular works begin, and the development must follow the approved plans unless an appropriate change is agreed. Permission may also have an implementation deadline.

Building Regulations, structural design, Party Wall obligations, ownership rights and other consents remain separate considerations. Planning permission does not settle a boundary dispute or override private legal restrictions. Coordinate these matters before committing to a start date with a contractor.

What the 97% approval rate means for your project

The practical lesson from Shorplans’ reported 97% approval rate is to take preparation seriously. It should not be read as proof that a particular design will be approved first time, that all applications follow the same route or that difficult sites can avoid scrutiny. No architect can promise the council’s decision.

What you can control is the quality of the brief, the accuracy of the information and how well the proposal responds to its setting. Identifying weaknesses early gives you the chance to improve the design before submission rather than react to a refusal afterwards.

Shorplans can help with measured surveys, architectural design, planning applications and coordinated structural engineering. Book a consultation to discuss the opportunities and constraints at your property, or request a quote for your project.

This article provides general guidance for projects in England, not property-specific legal or planning advice. Requirements and local policies can change. The 97% figure is Shorplans’ published overall approval statistic, not a guaranteed first-time success rate. Always obtain advice for your individual property before proceeding.