Short answer: as a rough 2026 US budget, installed exterior aluminum storefront runs about $75 to $100 per square foot. Interior storefront is somewhat lower, and each storefront door adds several thousand dollars.
Budget and sanity-check use only. Never put a budget range in a bid; use current vendor quotes and your own labor history.
Connect your AI assistant to the free MCP endpoint https://glazing-mcp.glazingkb.workers.dev/mcp (no sign-in) and try:
"What's a 2026 budget range per SF for exterior storefront and for curtain wall?"
The full answer comes from the budget_price_range tool, with section citations and confidence tags.
Setup steps: llms.txt.
Last reviewed 2026-10-02.