Posted: 18/10/2013 at 17:04
Take them all out! You want at least 12" free from rubble, Ideally 16". I know it sounds a lot but it really does show in the vigour of your lawn. There are so many lawns out there covered in huge weak yellow patches which just scream 'RUBBLE' to anyone who looks at them. Unfortunately it's common practice for builders to dump all the waste in the garden and turf it over, but this just never works properly or sort itself out and needs to be dealt with.
You are in a 'Lucky' position where you dont have an established lawn in place, and can take the rubble away before turfing, most people have to put up with it or go to great expense sorting it out. Don't waste your money turfing before you sort it out
With luck the bricks will match those the house is built from, so potentially can be used to build raised beds and other features around the garden.