Most lawns in need of repair can be over seeded in conjunction with aggressive core aeration. A premium blend of seed will be used that’s appropriate for your soil types and growing conditions.
If your lawn needs seeding, the fall is the absolute best time for this. Successful seeding in the spring is achievable but can be risky as you may not have enough time to establish that new grass before the hot and dry summer months.
By planting in the fall, you allow the grass plants to mature over two cool seasons before going into the hot summer thereby greatly increasing the chances of survival.