Homeowners can expect to pay between $500 and $4,000, or an average of $1,000, for hydroseeding a typical 5,000 to 10,000 square foot lawn.Hydroseeding averages between $0.06 to $0.20 per square foot or $2,000 to $4,000 per acre.Small jobs of less than 500 square feet will, instead, be charged an hourly rate of $24 to $30 per hour.However, most landscapers prefer to charge by the acre or ...