When you’re planning an extension or renovation, one of the most important early steps is making sure your project meets your local council’s planning requirements.
Each borough has its own rules, documents, and validation process — and missing even one detail can delay your application or lead to refusal.
At Fluent Architectural Design Services, our in-house planning consultants work with local councils across Surrey, Middlesex, Berkshire, and West London every single day. We know exactly what each authority expects, and we make sure your submission gives you the best possible chance of approval.
1. Check Your Council’s Validation List
Every local authority publishes a validation list on their website. This outlines the documents that must be submitted for your planning application to be accepted and processed.
If something is missing, your application won’t even be registered — which means the clock doesn’t start ticking on the eight-week decision period.
Our team checks these requirements for you before submission, ensuring everything is perfectly aligned with your council’s expectations.
2. Core Documents Required for Every Planning Application
Although details vary slightly between councils, these are the national standard requirements that apply to most applications:
-
Application Form – The official householder or full planning form.
-
Application Fee – Must be correctly calculated and paid for validation.
-
Site Location Plan (1:1250 scale) – Showing your property and surrounding area.
-
Block/Site Plan (1:200 or 1:500 scale) – Illustrating your proposal in relation to boundaries and neighbouring buildings.
-
Existing Drawings – Showing the property as it currently stands.
-
Proposed Drawings – Showing your new design, dimensions, and materials.
-
Design and Access Statement – Where required, explaining how the proposal fits with the character of the area.
-
Ownership and Agricultural Certificates – Confirming who owns the land.
-
Materials & Finishes – Detailing proposed external materials to show how the new design will blend with the existing property.
When you work with Fluent, all of these are prepared and submitted in-house — ensuring your application is valid, complete, and ready for assessment.
3. Find Your Local Council and Design Guidance
If you’re unsure which local authority your property falls under, you can check here:
Find your local planning authority
Once you know your borough, look up its planning resources. You’ll need to review documents such as:
-
SPD (Supplementary Planning Document)
-
SPG (Supplementary Planning Guidance)
-
Residential Design Guide
Each council’s website is slightly different, but a quick Google search such as “Hounslow SPD residential extensions” or “Elmbridge design guide” usually finds it instantly.
4. Understanding Your Council’s Design Guide
Each borough publishes its own Residential Design Guide or SPD, setting out what is considered acceptable for home extensions and alterations.
These guides typically include:
-
Setback distances from boundaries
-
Maximum heights and roof designs
-
Design principles for side and rear extensions
-
Acceptable materials and finishes
They can be quite detailed — and sometimes open to interpretation — which is where our planning consultants come in.
Because our team works with local planning officers every day, we understand exactly how each council interprets these policies. This insider knowledge helps us shape your design and application for the highest chance of success.
5. Why Getting This Right Matters
If your design fully complies with your council’s own guidance, there’s no logical reason for refusal. These are the same documents your planning officer uses to assess your application.
That’s why every Fluent project begins with a thorough local policy review — ensuring your plans meet both national standards and local design expectations from day one.
6. Unsure What Your Council Requires? Let Us Help.
If you’re not sure where to start, don’t worry — we can do the research for you.
Simply provide your address and a brief description of your project, and our team will:
-
Identify your local planning authority
-
Review the relevant design guides and policies
-
Prepare all required drawings and documents
-
Submit and manage your application with the council
Our all-inclusive service means everything is handled in-house — so you can focus on your design vision while we handle the red tape.
