7 Common Mistakes to Avoid When Planning a House Extension
Planning a house extension is exciting – but it can also feel overwhelming. With the right approach, your project can run smoothly and deliver fantastic results. But without proper planning, it’s easy to run into delays, added costs, or design choices that don’t quite work. Here are seven common mistakes we often see – and how to avoid them.
1. Rushing the Design Process
It’s tempting to get building as quickly as possible, but spending time on good design up front pays off massively in the long run. A rushed design can lead to awkward layouts or missed opportunities for light, space, and flow.
2. Ignoring the Natural Light
Extensions that look great on paper can feel dark and closed in if lighting isn’t considered. Think about window placement, skylights, and how the sun moves around your home throughout the day.
3. Not Getting the Right Permissions
Not all extensions require planning permission, but some do. Failing to check this properly can result in costly delays or even needing to alter the build after work has started. A good builder or architect can help you navigate this.
4. Underestimating the Budget
Unexpected costs are one of the most common issues. Whether it’s structural challenges, material upgrades, or finish changes, things can add up. Always allow for a 10–15% buffer in your budget.
5. Overlooking the Rest of the House
A new extension should feel like a natural part of your home – not just something tacked on the back. Consider how the new space connects with existing rooms, and whether any internal tweaks are needed to make everything flow.
6. Choosing the Cheapest Quote
Price matters, but going with the cheapest builder doesn’t always save money. Look at reputation, previous work, and whether the quote includes everything you need – or if extras will creep in later.
7. Poor Communication
Good communication is key. If your builder doesn’t return calls, or you’re unsure what stage things are at, it can be incredibly stressful. Work with a company that’s clear, friendly, and easy to reach.
In Summary
A successful extension comes down to good planning, realistic budgeting, and working with professionals who understand your goals. At Crossman & Walsh, we’re here to help from day one – with honest advice, creative ideas, and a focus on quality. If you’re thinking about extending, let’s talk.
