Window Replacement Cost Guide — St. Louis, MO

Verified 2025 pricing for window replacement services in St. Louis. Updated quarterly from local contractor data.

Service Cost Ranges

Service	Low	Average	High	Unit
Double-Pane Window Replacement	$300	$650	$1,400	per window installed
Energy Star Window Package	$400	$800	$1,800	per window installed
Whole-Home Window Replacement	$8,000	$18,000	$45,000	per project

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Older housing stock (pre-1958) increases complexity and materials cost

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✓Ask about seasonal discounts

✓Bundle multiple services

✓Check for manufacturer rebates

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