I know they’ll be a lot of ifs, buts and unknowns in this question, but I’m going to ask anyway to help me work out what’s feasible for us.
The long and short is we are a family of four: me, wife and two girls (six and nine). We live in a four bedroom house with one bathroom currently. With home working taking effect and two girls rapidly growing up and taking more and more ‘bathroom time’ we are thinking of either moving or extending. Moving’s been taken off of the cards - too much disruption and value for money is not great. So extending it is.
The plan is to build an extension on the side of the house adding a second lounge, master suite, two studies, boot room, and other spaces. It’d be build on the side of our existing house and would only require knocking through two walkways upstairs and downstairs, so minimal work there. It’s be two story but using the loft as living space, and high gabled roof to match the existing house. In total I was thinking it’d be 5 metre by 10 meters. We’d also be knocking down a double garage.
The trouble is the cost. We live in the south east of England - a village called Leeds outside of Maidstone. So costs would be higher, which on websites tells us would roughly be £1,800 per sqm meaning about £90,000. We’ve had a friend whose done a smaller build for roughly the same sqm cost as I’m thinking but my boss was building a porch and over lockdown the cost went from £20,000 to £100,000. Now I don’t know the size, quality, or whether the builder was chancing their luck and not really wanting the job in giving a high quote, but made me think about the true cost of doing such an extension.
My question is if people have done extensions of late what is the true cost per sqm? I’m planning on getting going with firming down plans in November time and need to start working out finances so any help dearly appreciated. Also I am aware of lots of ifs and buts around this in terms of quality of build and fittings (about middle on the line we’re thinking), but with so much variability is builds and costs thinking about true cost is really hard.