A Guide to Planning Applications in London

By Excela Architecture London

Navigating the planning application process in London can be complex, especially for homeowners, developers, or business owners unfamiliar with local planning regulations. Whether you're planning a loft conversion in Camden, a rear extension in Wandsworth, or a mixed-use development in Tower Hamlets, understanding the planning process is key to moving forward smoothly.

At Excela Architecture London, we specialise in guiding clients through every stage of the planning journey. This guide outlines everything you need to know about submitting a successful planning application in London—and how we can support you every step of the way.

What Is a Planning Application?

A planning application is a formal request to your local planning authority (LPA)—typically the borough council—for permission to carry out building works or change the use of a building or land. Most significant developments, alterations, or changes in use require planning approval.

When Do You Need a Planning Application?

You typically need to submit a planning application if you are:

• Building something new (e.g. a new home or commercial building)

• Making a major change to a building (e.g. extensions, additional floors)

• Changing the use of a property (e.g. residential to commercial)

Some smaller changes may be covered under Permitted Development Rights, which allow specific types of work without full planning permission. However, in London, where many boroughs have Article 4 Directions or are within conservation areas, even minor works often require full consent.

Types of Planning Applications

There are several types of planning applications relevant in London:

1. Full Planning Permission

This is the most common type, used for new developments or significant alterations to existing properties.

2. Outline Planning Permission

Used to establish whether a development is acceptable in principle, usually followed by a Reserved Matters application with detailed designs.

3. Householder Planning Permission

Applies to extensions or alterations to existing residential homes, such as:

• Rear or side extensions

• Loft conversions with dormers

• Porch additions

  
  

4. Listed Building Consent

Required if your property is a listed building. Any alterations—internal or external—require special approval.

5. Conservation Area Consent

If your project is in a conservation area (common across London), additional constraints apply. Planning officers will assess how the proposed development preserves or enhances the area’s character.

The Planning Application Process: Step-by-Step

At Excela Architecture London, we’ve refined the planning process into clear, manageable steps for our clients:

1. Initial Consultation & Feasibility Study

We begin by understanding your goals and assessing whether your vision is viable within local planning policies. We conduct preliminary research into:

• Planning constraints (e.g. conservation areas, flood zones)

• Previous applications on the site

• Local development plans

  
  

2. Design Development

Our architectural team develops creative, compliant design proposals. We balance aesthetics, function, and planning requirements, ensuring the designs align with London Plan policies and borough-specific guidance.

3. Pre-Application Advice (Optional but Recommended)

Many London boroughs offer Pre-App services, allowing developers or homeowners to receive informal feedback from planning officers before a full submission. Excela can manage this process to mitigate risks and improve approval chances.

4. Planning Application Submission

We handle the full application, including:

• Planning drawings and site plans

• Design and Access Statement (DAS)

• Heritage statements (if needed)

• CIL (Community Infrastructure Levy) calculations

• Planning application forms and fees

  
  

5. Public Consultation & Planning Review

After submission, there’s a 21-day consultation period where neighbours and other stakeholders can comment. The planning officer reviews the proposal and makes a decision—usually within 8 weeks.

6. Approval or Appeal

If approved, you're ready to move to Building Regulations and construction.

If refused, we’ll advise on whether to appeal, revise, or reapply.

Common Challenges—and How Excela Architecture London Can Help

Planning Applications in London comes with unique challenges, including:

• Strict density and design policies

• Height and massing constraints

• Heritage and conservation area sensitivities

• Overlooking and amenity considerations

  
  

Excela Architecture London brings deep local knowledge, design excellence, and strategic planning experience to overcome these challenges. We work across boroughs like Islington, Southwark, Hackney, and Westminster, adapting to each council’s nuances.

Whether you need guidance on permitted development or a bespoke design for a complex site, we act as your partner and advocate throughout the process.

Why Choose Excela Architecture London?

Our tailored, end-to-end service includes:

• Expert Planning Advice: We understand the intricacies of London’s planning system.

• Design-Led Approach: We produce imaginative, practical, and policy-compliant designs.

• Proven Track Record: We’ve secured approvals for projects ranging from home extensions to commercial redevelopments.

• Full-Service Support: From feasibility to planning and beyond, we handle it all.

Our clients value our clarity, creativity, and commitment to securing the best possible outcome for their projects.

Final Thoughts

The London planning application system can be daunting, but with the right guidance, your project can move from concept to approval with confidence. Whether you're a homeowner looking to extend, or a developer planning a larger scheme, Excela Architecture London is here to help you unlock the full potential of your property.

Ready to start your planning application journey?

📞 Call us on 020 8064 4098

📧 Email us at London@ExcelaArchitecture.co.uk

🌐 Visit www.ExcelaArchitectureLondon.co.uk to book your free consultation.

Let’s build something extraordinary—together.