The cost to install a whole house generator in St. Louis ranges from $5,760 to $24,000, with most homeowners paying around $11,520. Your actual cost depends on several factors specific to your home and the St. Louis market.
The Midwest has a strong pool of skilled tradespeople, and labor rates tend to be moderate compared to coastal cities. Union and non-union shops both compete, giving homeowners options on pricing.
Budget $92–$460 for permits and inspections. Your contractor typically handles the permit process, but confirm this upfront.
In cold climates, expect additional costs for heated conduit runs, insulated wire, and work scheduling around freezing temperatures. Winter installations may cost 10–15% more due to shorter workdays and weather delays.
This project requires a licensed professional in St. Louis. Attempting whole house generator installation without proper licensing can void insurance and create serious safety hazards.
Compare prices from licensed, insured contractors in St. Louis.
Browse More Electrical Projects →The average cost is $11,520, with most homeowners paying between $5,760 and $24,000 depending on project complexity.
Yes, a permit is typically required. Check with your local building department for specifics.
Most projects take 1–3 days to complete.