Planning a house extension is one of the most effective ways to add value to your home while creating more living space for your family. Statistics show that a well-designed extension can increase your property’s value by as much as 15%. It’s also a great alternative to the stress of moving house. That said, the process can still feel overwhelming without the right guidance.
If you’re wondering where to start, this guide will walk you through the key stages of planning a house extension, from design and permissions to building and interiors.
Work with an Architect
Choosing the right architect is one of the most important steps in your project. An architect will design your extension according to your needs while ensuring all plans comply with building regulations. They can also maximise your space, offer creative solutions, and recommend reliable builders.
Architect fees are usually around 15% of the project cost, so it’s important to factor this into your budget. As a rough guide, a 4m x 6m extension typically costs between £26,000 and £34,000.
Building Regulations Are Essential
Even if planning permission isn’t required, your extension must still meet building regulations. This ensures the work is safe, structurally sound, and compliant with fire safety standards. Make sure any builders or contractors are registered, or that they liaise with local building control officers to certify their work.
Find a Trusted Builder
The success of your extension will depend on hiring a reliable builder. Start by checking online reviews, ask to see examples of their work, and confirm they’re registered with the relevant trade bodies. It’s also wise to check their warranty policies to protect your investment.
Consider a Project Manager
In many cases, the architect or lead builder will act as the project manager. However, you may choose to hire additional support to oversee the process. A project manager ensures the build stays on schedule, within budget, and runs smoothly from start to finish.
Don’t Forget Interior Design
Once the exterior is complete, attention should turn to the interiors. A successful extension should feel like a natural continuation of your home, not an awkward add-on. Working with an interior designer ensures your new space complements the style of your existing property while reflecting your personality and lifestyle.
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