Whatever your plans are, make sure they're realistic – don’t overstretch yourself either financially or with a big project that you're not confident in managing.
Major home improvements can cost more than you expect, so it’s a good idea to create a budget and work out how you will pay for it. If you’re not sure if you can afford it, have a rethink and maybe scale down the project or consider doing it in stages.
Every home is different, so prices are difficult to predict without an inspection from an expert. As a general rule of thumb, single-storey extensions can cost upwards of £2,000 per square metre, and of that amount, you'll likely pay an extra 10% in fees for building regulations, a structural engineer and an architect. It's not unheard of to pay £10,000 for an extended kitchen, and a new bathroom could cost around £5,000. While new builds and self builds are free from VAT, extensions and conversions aren't, so that could be another expense you hadn't considered.
Things might not always go to plan, so set some money aside for emergencies. If you don't end up using it, you could use it to decorate that new space – or simply put it back into your savings.