House Extensions South London

Chartered Architectural Technologists | ARB Registered Architects

Transform your home with bespoke house extensions South London homeowners trust; designed for comfort, space, and timeless style.

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Expert Design

Trusted Experience

Proven Results

Maximise Space and Comfort in Your South London Home

Your home should grow with your lifestyle. Whether you’re considering a kitchen extension to create a modern dining area or a double-storey extension for a growing family, we provide tailored home extensions that complement your existing structure.

At Detailed Planning, we specialise in house extensions that South London residents love, balancing function, style, and value. From modernising period properties to unlocking additional space in newer builds, we handle the whole process, guiding you through construction, planning, and design.

We’ve worked with clients across South London to deliver stunning extensions near Dulwich, Clapham, and Wimbledon. Book a consultation today and let us help you form the perfect plan.

Don’t Let Your South London Home Extension Become a Headache

Without expert guidance, house extensions can become overwhelming. These are some common challenges homeowners face:

Poor Design Choices

A lack of careful planning can result in a design that doesn’t meet your needs, is aesthetically unpleasing, or doesn’t add value to your property.

Delays in Planning Permission

Navigating the complexities of planning permissions and building regulations can cause unnecessary delays and frustration.

Cowboy Builders

Hiring unqualified or unreliable builders can lead to subpar results, financial loss, and added stress.

Unexpected Costs

Without proper budgeting and planning, unexpected expenses can quickly add up, derailing your project.

Beautiful, Functional Extensions Designed Around You

We create house extensions in South London that feel like a natural part of your home. Whether it’s creating additional living space for your family or designing a new room that suits your lifestyle, we ensure your new extension is thoughtfully constructed and seamlessly integrates with your home’s style.

Our expert team designs and builds single and double-storey extensions, wrap-around extensions, and return extensions. Whether you’re adding a dining room, studio, or family area, we align the design to your individual requirements and deliver outstanding results.

With experience in loft conversions and whole-home transformations, we can help you maximise space and unlock your property’s full potential.

Our House Extension Services In South London

We offer a range of services tailored to meet your needs and exceed your expectations when it comes to house extensions for your London homes:

Garden Room Extension London
London House Extensions
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Why Choose Detailed Planning?

We are London’s trusted architects in house extensions, with years of experience delivering bespoke solutions, including house renovations, project management and more! Here’s why homeowners choose us:

Personalised Designs

Tailored solutions that fit your vision and lifestyle.

Expert Guidance

From navigating planning permissions to connecting with trusted builders, we handle it all.

Proven Success

A track record of high planning approval rates and satisfied clients.

Avoid the Stress of Poor Design and Execution 

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Extending your home should be exciting, not overwhelming. But without the right support, navigating planning permission, maximising available space, and managing design challenges can quickly become stressful.

Poor design, rogue builders, and unclear regulations often result in delays, extra costs, and missed opportunities to improve functionality.

At Detailed Planning, we eliminate that stress. Whether you’re aiming to add an extra bedroom or expand your ground-floor living space, we manage every stage with precision and care. We handle all planning permission requirements, design complexities, and compliance details to ensure a smooth experience.

Imagine a home extension that gives your family more space to grow, more room to connect, and greater comfort every day. It’s all possible with the right team by your side.

Trusted Guidance for Your South London Home Extension

With over 14 years of experience in South London, we understand how to bring out the best in every home. Our expert team offers support from the first idea to the final completion, ensuring every detail meets your goals.

From securing planning permission to designing around your property’s unique features, we ensure the added space enhances your home’s character and boosts its overall functionality. Whether you’re considering a new kitchen, extra bedroom, or open-plan space, we help you make the most of your available space.

We’re based locally, so we know the area, the council processes, and how to design extensions that work with South London’s diverse housing stock.

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Our Simple Four-Step Process

1. Create a Space That Fits Your Vision

Partner with us to design a high-value space tailored to your unique goals. Whether you’re looking to expand your home or add value to your property, we’ll help you make your vision a reality.

2. Leave the Paperwork to Us

Navigating planning permissions and regulations can be overwhelming. Let us handle the approvals, so you can be confident your project is ready for the next step—stress-free and on schedule.

3. Connect with Trusted Builders

We’ll introduce you to reputable contractors who can bring your design to life. With our ongoing support, you can relax knowing the right team is handling your project.

4. Enjoy a Space That Delivers Value

Once your project is complete, you’ll have a space that not only meets your needs but also adds financial value or enhances your home for years to come.Ready to Enhance Your Home?

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Recent Projects

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FAQs

Get answers to common questions about house extensions:
Do I need an architect for an extension?

It’s always a good idea to work with an architect for any significant changes to your home, as they can help ensure that the design is functional, safe, and meets any necessary standards. An architect can also help with the planning and building control process and provide valuable guidance and expertise throughout the project to ensure it goes smoothly. You can trust that Detailed Planning will have the knowledge and experience to help you achieve the extension of your dreams.

Do I need an architect for a small extension?

Even a small extension can involve complex structural and design considerations, so it’s worth consulting with an architect to ensure the project succeeds. Detailed Planning can help you create a functional, safe, aesthetically pleasing design, achieve your goals, and provide valuable guidance and expertise throughout the project. You can trust that an architect will have the knowledge and experience to help you achieve the extension of your dreams, no matter the size.

How much does an architect cost for an extension?

The cost of hiring an architect for an extension can vary depending on the size and complexity of the project, as well as the location and any local building codes or regulations that apply. Architects generally charge an hourly rate or a percentage of the total construction cost for their services. Some architects may also offer fixed-fee or lump-sum pricing options. Discussing the fee structure and any additional costs with your architect before beginning a project is essential. You can trust that Detailed Planning will work with you to find a pricing arrangement that meets your needs and budget.

How do I get an extension on my house?

To get an extension on your house, you will typically need to follow these steps:

Determine the scope and type of extension you want to build.

Consult with an architect or building designer to create the design.

Obtain any necessary approvals from your local council or regulatory bodies.

Hire a contractor to build the extension, and possibly additional professionals like engineers or surveyors.

Monitor the construction process to ensure it meets your satisfaction.

How much does an architect cost for a house extension?

The cost of hiring an architect for a house extension can vary depending on the size and complexity of the project, as well as the location. Architects generally charge an hourly rate or a percentage of the total construction cost for their services. Detailed Planning offers fixed-fee or lump-sum pricing options. Discussing the fee structure and any additional costs with your architect before beginning a project is essential.

How much does it cost for house extension plans?

The cost of house extension plans can vary depending on the size and complexity of the project, as well as the location and any local regulations that apply. Architects generally charge an hourly rate or a percentage of the total construction cost for their services, including creating plans and drawings. Detailed Planning offers fixed-fee or lump-sum pricing options. Discussing the fee structure and any additional costs with your architect before beginning a project is important.

How much does a structural engineer cost for a house extension?

The cost of hiring a structural engineer for a house extension can vary depending on the size and complexity of the project. Structural engineers typically charge an hourly rate or fixed fee for the project. Typical fees can range from £1,000 to £2,000.

How much is the average house extension in the UK to build?

The cost of building a house extension in the UK can vary widely depending on factors such as size, complexity, and location. The Royal Institution of Chartered Surveyors (RICS) estimates that a single-storey extension costs around £40,000 to £50,000, while a two-storey extension may cost £80,000 to £100,000 or more. Note that these figures exclude finishes, electrics, and plumbing, and costs are generally higher in London.

Are house extensions worth it?

Whether a house extension is worth it depends on your circumstances, including your budget, the value of your property, and your reasons for building the extension. In general, a well-planned and well-built extension can add value to your home, increase your living space, and improve functionality. Consulting with professionals ensures that the extension meets your needs and complies with necessary regulations.

Can I build an extension on my house?

Whether you can build an extension on your house depends on factors like the size and layout of your property, local regulations, and any restrictions or covenants in place. You will likely need permission from your local council or regulatory body. Consulting with an architect or architectural professional can help establish what is feasible. Detailed Planning can advise you further.

Take the First Step Toward Your Ideal Extension In South London

Planning a home extension? Let’s make it a reality without the stress. We manage the entire process, giving you peace of mind and delivering results that truly work for your lifestyle.

Our process starts with a free consultation, during which we discuss your ideas, assess your available space, and offer expert insights into layout, planning permission, and functionality. Whether you’re looking to build an extra bedroom, upgrade your kitchen, or reconfigure your layout, we’re here to help.

Contact us today to schedule your free consultation and take the first step toward a smarter, more spacious home.

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Client Testimonials