House Extensions North London

Chartered Architectural Technologists | ARB Registered Architects

Transform your home with expert architects in North London. Design your perfect house extension today!

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Expert Design

Trusted Experience

Proven Results

Grow Your North London Space

Your home in North London deserves to grow with your lifestyle. Whether you dream of a rear extension in Muswell Hill, a side return in Crouch End, or a full wraparound extension in Finchley, Detailed Planning specialises in high-quality, tailored house extensions across North London. From creating spacious kitchens and open-plan living areas to adding extra bedrooms, we enhance your property’s functionality and value.

Our experienced team has worked extensively on terraced, semi-detached, and detached homes throughout Highgate, Barnet, and Hampstead. A dedicated project manager manages every project to ensure a smooth, stress-free experience from start to finish. We also offer transparent guidance on house extension costs in North London so you can confidently plan.

Avoid The Common Pitfalls Of House Extensions In North London

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.

Seamless Home Transformations

At Detailed Planning, we specialise in single- and double-storey house extensions across North London, making the process smooth, stress-free, and tailored to your lifestyle. Whether you’re extending a home in Highbury, adding space in Alexandra Palace, or planning a loft conversion in Barnet, we manage every stage, from concept to completion, with precision and care.

Our expert team focuses on maximising natural light and designing functional and beautiful spaces. Whether you’re expanding under permitted development rights or seeking planning permission, we ensure full compliance with North London planning regulations. We also offer straightforward, honest advice on local building costs, helping you confidently budget.

With extensive experience working on homes throughout areas like Enfield, Hampstead, and Finsbury Park, we bring innovative design and local insight to every project. Let’s transform your North London home into a space that truly works for you.

Our House Extension Services

We offer a range of services tailored to meet your needs and exceed your expectations when it comes to house extensions for your North 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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Home improvement projects can become overwhelming without the right guidance. Poor design, cowboy builders, and complicated regulations can lead to delays, financial loss, and anxiety. Don’t risk these pitfalls. Let Detailed Planning provide the expertise and support you need to make your dream home a reality. You deserve a home that safeguards your savings while enhancing your property’s value.

Imagine a space that improves your quality of life and makes you proud. A place where precious memories with family and friends are made.

Trusted Guidance Every Step of the Way

With over 14 years of experience, we understand how important your home is to your well-being and happiness. Our team ensures a smooth and stress-free process, managing everything from party wall agreements to planning approvals and build execution. Based in London, we provide expert advice tailored to local regulations and architectural styles, ensuring your project stays on track.

Book your free consultation today and take the first step toward your dream home!

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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.

Are You Ready To Start Your North London Extension?

If you’re ready to expand your living space and add long-term value to your home, now is the perfect time to start your North London extension. Whether you need a larger kitchen, extra bedrooms, or a versatile open-plan layout, Detailed Planning guides you through every step.

With in-depth knowledge of local planning regulations and years of experience working across areas like Camden, Barnet, and Haringey, we’ll ensure your project is designed and delivered to the highest standard.

Let’s turn your vision into reality. Get in touch today to begin planning your North London extension.

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Client Testimonials