The answer to 'how much does pest prevention cost' is that the cost can vary widely depending on several factors, but generally falls within a range of $100 to $500 per year for most homeowners. The exact cost will depend on the size of your home, the type of pests you are trying to prevent, the specific services needed, and your location.
Factors that can influence the cost of pest prevention include the type of pest control treatments required (e.g. spraying, baiting, exclusion work), the frequency of service visits, and whether you need one-time or ongoing prevention. Homes in urban or densely populated areas may also cost more due to higher demand for services. Preventative pest control is an investment, but it's often much less expensive than dealing with a full-blown infestation.