The answer to 'how much does seeding cost in Illinois' is that the cost of seeding can vary significantly depending on several factors. Generally, the cost of seeding a lawn in Illinois can range from $0.10 to $0.50 per square foot, with the average being around $0.25 per square foot.
The actual cost will depend on factors such as the size of the area being seeded, the type of grass seed used, any soil preparation required, and whether you hire a professional landscaping company or do it yourself. Additionally, the time of year, your location within Illinois, and the complexity of the job can all impact the final cost.