"Licensed and insured" gets printed on every third work van, but the two words mean different things and both matter before anyone touches your walls or siding. A license (where Connecticut requires one for the trade or job type) means the contractor has met a baseline standard and can be checked against state records. Insurance is separate: general liability coverage pays if a ladder goes through a window or a drop cloth doesn't stop spilled paint from ruining a hardwood floor, and workers' compensation covers a crew member who's hurt on your property so you're not the one holding that bill. A business can genuinely have one without the other, which is exactly why this distinction is worth checking rather than assuming.
Before hiring, ask for the actual certificate of insurance, not just a verbal "yes we're covered." A legitimate painter will have their insurer send it directly to you or provide a copy naming you as the job site. Confirm the coverage is active (not expired) and ask whether it includes both liability and workers' comp, especially if the crew is more than one or two people. For any Connecticut licensing that applies to the scope of work, you can verify the number rather than take it on faith.
We track 5 painting businesses serving Ansonia in this category. Our scoring weighs verified license and insurance status alongside review patterns, responsiveness, and job history, so you're not starting from zero on each one. For the full ranked breakdown, see our best painters in Ansonia guide, and for how we calculate the rankings, check our methodology.