We don’t like hidden surprises, so our prices are fixed and cover full installation. During your site visit, our specialist team will test your soil to determine the number and size of screws needed for good solid roots, ensuring your Bonni will stand the test of time. This will be quoted for separately. If you live outside a 50-mile radius of Bonni HQ or within the London Boroughs, additional costs will also be factored into the overall Bonni build price.