Might I suggest a good smattering of compost/other gardens' grass clippings (if you can get hold of it!) just after aeration and before seeding?...
I'd wait until the fence is up to cut it; cutting is fairly traumatic as it is for a lawn, so doing this while fence builders are tramping all...
I'd personally leave it until the new grass is cuttable; it may look silly for a while but at least you won't damage any of your fragile new...
To be honest if he's really serious about a good lawn I would try and at least break up the concrete a little before laying the soil; It's true...
A really good tip here is to aerate the entire lawn, then go over the area with the following mixture:Grass clippings Compost Sand/Silt mix...
:D :D :D
I'd have to agree with frogesque; you really can't take shortcuts when laying a new lawn, any problems with the existing lawn will obviously be...
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