Direct Answer
The best commercial glass & curtain wall installation contractors in Minneapolis are verified through Minnesota Department of Labor (dli.mn.gov). Look for companies with 4.5+ Google stars, 50+ reviews, active MN license, and at least 5 years serving the Minneapolis area.
Full Explanation
Verify any Minneapolis contractor at Minnesota Department of Labor (dli.mn.gov). Request proof of general liability insurance and workers' compensation. Ask for references from recent Minneapolis projects — local experience matters for understanding permit requirements and area-specific challenges.
Local Factors in Minneapolis
📍Verify license: Minnesota Department of Labor (dli.mn.gov)
📍Minneapolis city permit office issues local permits
📍Check BBB Greater Minneapolis chapter
📍Require MN state license + local city license if applicable