If you have a brand new lawn you’ll want to ensure that you’ve loosen 2-3 inches of soil. This will give you a chance to find and remove any debris including sticks, stones, wood. You’ll also want to make certain they are no large clumps of soil throughout the area you’ll be seeding.
This is also a great time to ensure your lawn is nice and level. Water should not stand more than 24 hours after a decent rainfall. If it does, it will be much easier to take care of this issue now before you have a pristine lawn.
When spreading grass seed across a large area is best to use a broadcast spreader, but any spreader will work. You’ll want to ensure you have approximately 16 seeds per square inch. Any more than that and the seedlings will be fighting from room and nutrients. This will cause your lawn to come in thin in areas where seeds are overcrowded.
Ideally, you’ll want to cover the seeds with ¼ of soil. Also covering the seed bed with a grass seed accelerator will keep the seeds in place and retain moisture. You could also use hay to cover a newly seeded lawn, just ensure the seed heads have been removed from the hay before bailing or you’ll grow a hay field in your front lawn. A light coat of a starter fertilizer will provide some slow release nutrients for your developing lawn.
Lastly, you’ll want to make sure you water your lawn often. Ideally you’d water less, but more frequently so no seed is washed away. You’re just looking to keep the soil moist to enhance the germination of the grass seed.