House Extensions West London

Chartered Architectural Technologists | ARB Registered Architects

Transform your home with architectural services designed for elegance and functionality. Discover tailored house extensions that West London homeowners trust.

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Expert Design

Trusted Experience

Proven Results

Extend Your West London Home with Confidence

Your living space should reflect your lifestyle and grow with your needs. Whether you’re planning a kitchen extension, a double-storey extension, or a loft conversion, we provide home extension ideas and expert support to bring your vision to life.

At Detailed Planning, we’ve spent many years guiding homeowners through successful home extensions. From your initial meeting to final construction, our experienced team ensures your home extension project stays on track and meets your expectations. Based in West London, we’ve helped customers across Kensington, Chiswick, and Richmond design extensions that enhance comfort and add value.

We specialise in managing every aspect of the process, from concept drawings and structural engineers to working with your local authority for planning permission.

Common Pitfalls Of West London Home Extensions And How To Avoid Them!

Without expert input, extending your home can quickly become a stressful and costly experience. Here are common problems we help you avoid:

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 House Extensions Tailored to You

We don’t believe in one-size-fits-all. Our home extensions are developed to meet individual needs, enhance existing layouts, and maximise the potential of your West London property. Whether adding a room, opening up your ground floor, or wrapping a new space around your garden, we tailor your extension to be stylish and functional.

From architectural drawings to structural materials, we advise on every detail to ensure your extension blends with your home’s character and improves the everyday living experience.

We support you at every step from generating ideas to handling planning paperwork and managing the construction timeline. You get a finished product that reflects your goals, built with the same class and care that defines our brand.

House Extension Services in West London

We offer flexible design and construction packages tailored to your property and goals:

Garden Room Extension London
London House Extensions
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Why Choose Detailed Planning for West London Home Extensions?

Expert Architectural Services

Precision-led designs that balance aesthetics and practicality.

Many Years of Experience

Trusted across West London for quality home extensions and renovations.

Full-Service Approach

From planning approval to site construction, we manage the full process.

Knowledge of Local Authority Requirements:

We know how to navigate West London planning rules efficiently.

Tailored Client Experience

We work closely with every customer to deliver solutions that suit their lifestyle.

Client First Approach

Our team will always put you first and ensure you end with the West London extension of your dreams! 

Avoid the Stress of Poor Design and Execution

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Planning a home extension without the right support can quickly turn into a frustrating experience. Without proper planning, poor design decisions, unvetted builders, and overlooked building regulations can all lead to delays, cost overruns, and disappointment.

At Detailed Planning, we make the process straightforward and dependable. We ensure your home extension is compliant with all relevant building regulations from the start, helping you avoid unnecessary setbacks. Whether you’re aiming to bring more natural light into your home with larger openings or rework your layout for better flow, we carefully manage each stage to keep your project on schedule and moving toward completion.

You deserve a home that enhances your quality of life and reflects your vision. Let us help you transform your space into something functional, stylish, and lasting.

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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.

Ready to Begin Your Home Extension Project?

Let’s bring your home extension ideas to life. Whether you’re adding a double-storey extension, planning a loft conversion, or need professional architectural services to help guide your home extension project, contact us today to book your free consultation and get started.

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Client Testimonials