Does this come with an extension or would that be an extra cost?

Hi Kerry, Thank you for your enquiry. Yes, this Dreambaby Security Gate would be suitable for the height you require (1metre). Extensions for this gate can be purchased at an extra cost, to allow for a larger width opening, as this particular gate comes at a standard size to fit openings from 71-82cm. Delivery of these extensions can take from 2-3 weeks, due to orders for this product arriving from Australia. If you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our on-line store finder. Here you can find contact details for your nearest Baby On The Move store where one of our team experts can help you with ordering and pricing for this product and assist you with any further questions you may have regarding our range of products available. We hope this has helped with your query.