The new format outlet will open on March 1, following a seven-week transformation.
As well as offering thousands of home improvement products it will boast a You Can Do It centre, where adults and children can learn key DIY skills.
Paid classes on how to hang wallpaper and lay floors will be among the lessons offered.
B&Q store manager Pete Lucas said: “Our store has been over a year in the planning as we aim to bring a world leading home improvement shopping experience to our customers in Poole.
“We’ll be offering a unique product, always at a lower cost, accessible when they need it and we’ll be the first port of call for help and advice.”
The new-look store will include more than 2,000 new products in décor, home furnishings and lighting. There will also be a dozen help and advice kiosks throughout the store.
This new B&Q is