Thinking about extending your home? Whether you’re adding space for a growing family, creating a dream kitchen, or building a home office, house extension plans are key to getting the most out of your project. But where do you start? In this guide, we’ll walk you through the entire process, so you can approach your home extension with confidence.
Simply put, house extension plans are detailed drawings and documents that outline your home extension. These plans include the design, layout, and construction details that will guide the builders through the project. They are essential not just for construction but also for securing planning permission and ensuring your project complies with building regulations.
House Extension Plans Example – In & Out House
Proper house extension plans are more than just a formality—they’re the blueprint for your entire project. Here’s why you need them:
Creating house extension plans involves several key steps. Here’s what to expect:
House Extension Plans Example – Dash House
Planning permission depends on the size and scope of your extension. If you’re building a small, single storey extension that meets certain guidelines, it may fall under Permitted Development Rights. This means you won’t need full planning permission. However, for larger projects, or if you live in a conservation area, you’ll likely need approval from your local council.
When planning permission is required:
Even if you don’t need planning permission, it’s advisable to apply for a Lawful Development Certificate. This gives legal confirmation that your extension complies with regulations and can be useful if you sell your property later.
Home Extension Section Example – Monument House
Budgeting is a critical part of your home extension project. Costs vary depending on factors like size, materials, and the complexity of the build. On average, a standard house extension can cost between ÂŁ2,500 to ÂŁ3,500 per square metre.
When planning your budget, consider:
For more details on house extension costs, read our full blog HERE!
Traditional Wraparound Extension – Walnut House
Single storey extensions are perfect for homeowners looking to create more space such as an open plan kitchen on the ground floor, without major structural changes. They’re often used to expand kitchens, dining areas, or living rooms, creating a seamless flow between indoor and outdoor spaces.
When designing single storey extension plans, it’s essential to consider the layout and functionality. Think about how the space will be used and ensure easy access to the rest of the house. For example, incorporating large glazed doors can flood the area with natural light while connecting it to the garden.
Planning permission may not be necessary for smaller single storey extensions, as they often fall under Permitted Development Rights. However, even if you’re eligible, it’s wise to have clear plans in place to secure a Lawful Development Certificate for peace of mind.
If you’re looking to significantly increase your home’s square footage, a double storey extension is a fantastic option. These are ideal for creating extra bedrooms, bathrooms, or even a larger master suite upstairs while expanding your kitchen or living area on the ground floor.
Double storey extension plans require careful structural consideration, as they must integrate seamlessly with the existing building. Features like matching rooflines, consistent materials, and balanced proportions are key to ensuring the extension looks like a natural part of your home.
Planning permission is typically required for double storey extensions, particularly if they extend more than three metres from the rear wall of the original house. A professional architectural designer will help you navigate local council requirements and ensure your plans meet building regulations. For details on costs, read our double storey extension cost guide for 2024!
Loft conversions are a brilliant way to add valuable living space without altering your home’s footprint. Whether you’re creating a guest bedroom, a home office, or a playroom, well-designed loft conversion plans can transform an underused attic into a functional and stylish space.
There are several types of loft conversions to consider, including:
Most loft conversions fall under Permitted Development Rights, but you’ll need to ensure your loft conversion plans comply with structural safety and insulation standards outlined in Building Regulations.
Outbuildings are increasingly popular for creating dedicated spaces like home offices, gyms, or studios. These detached structures can be customised to suit your specific needs, offering a separate, quiet area away from the main house.
When designing outbuilding plans, consider practicalities like insulation, heating, and access to utilities. Even if planning permission isn’t required for smaller outbuildings under Permitted Development Rights, their purpose and location on your property will impact the design. For instance, an outbuilding used as a living space may have stricter regulations than one used for storage.
Outbuilding plans also benefit from thoughtful landscaping to integrate the structure into your garden, making it a functional and attractive addition to your property.
A well-designed extension starts with the right architectural designer. When selecting a designer, consider the following:
At DeVis Architecture, we specialise in crafting bespoke house extension plans that meet our clients’ needs and make the planning process as smooth as possible.
Meet the DeVis Architecture Team – Zak Gilby & Lina Luzina
House extension plans are the foundation of a successful home extension. Whether you’re at the early stages of planning or ready to get started, the right guidance can make all the difference. At DeVis Architecture, we’re here to help you every step of the way—from the initial consultation to the final build.
Ready to turn your dream extension into a reality? Contact us today for a free consultation and let’s get started on your house extension plans!
One of our team will get back to you as soon as possible.