Direct Answer
The best commercial glass & curtain wall installation contractors in Bloomington 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 Bloomington area.
Full Explanation
Verify any Bloomington contractor at Minnesota Department of Labor (dli.mn.gov). Request proof of general liability insurance and workers' compensation. Ask for references from recent Bloomington projects — local experience matters for understanding permit requirements and area-specific challenges.
Local Factors in Bloomington
📍Verify license: Minnesota Department of Labor (dli.mn.gov)
📍Bloomington city permit office issues local permits
📍Check BBB Greater Bloomington chapter
📍Require MN state license + local city license if applicable