Building a house extension is a journey. If you’ve never been on it before, it can feel daunting knowing where to begin, how to make a budget, and what to include in your plans. If you’re thinking about building an extension and you’re in the process of doing your research, our team have put together some important tips to show you how to plan, budget, and prepare. 

Before you start building an extension

It’s important to be aware of any local and national construction news that could impact your extension. For example, after the last Covid-19 lockdown, materials were extremely scarce, so prices shot up. Tradespeople were also experiencing significant deadlines.  The last thing you want to do is start a project only to find there’s a national shortage of essential supplies that will add cost and time to your extension. 

Factor in extended timelines

It’s always best to expect delays for large projects such as extensions. When you’re planning the timescale, build in a time contingency should the project run over for any reason.  This means expecting longer lead times for planning applications and having backup plans in place should the project last longer than intended.  In general, you can expect an extension to last a year from planning through to completion, but we’ll be able to give you a better idea of the timeline when we give you a free consultation. 

How to plan the cost of your extension

We understand how easy it is to get excited about design ideas, but it’s important to set realistic expectations for your budget.  Start by working out roughly the size of an extension you can afford. Roughly, a single-storey extension will cost between £1250 and £2000 per square metre. Once you have an idea of the size of the extension and build cost, it’s easier to plan out the design elements to stay within your overall budget.  Many believe a two-storey extension is cheaper since you’ll be taking up less ground space (so less foundation). But don’t forget you’ll need to factor in the cost of a roof and added materials, so it works out roughly equal per square metre to a single-storey. 

Talk to a Builder Early on

When many people start thinking about building an extension, they do some online research and become overwhelmed with the amount of information.  We recommend speaking to a builder very early on in the process to get all the information you need, all tailored to your property.  At Park Lane Extensions, our team provide free consultations to homeowners who are interested in an extension. With decades of experience, one of our experts will assess your property and tell you what is possible for an extension and give you an estimate of the cost.  We believe it’s best to have all the information upfront so you can make the best decision for your property. Contact us today to arrange a free consultation.