Who is your quote through? I am a commercial insurance broker and our firm specializes in multi-family (90+% of our book), but I sometimes run across some smaller buildings or strip centers that our multi-family clients own. I'm happy to take a look but we have limited markets for something like this as most of our carriers work on bigger schedules. I will tell you, increases are the norm and have been for the last 3 years or so. Texas is far and away the leader in wind/hail claims. As in more than the next 4 states combined. Fewer and fewer carriers want to write in Texas, especially north Texas or coastal so the ones that will are increasing their rates. If a carrier is giving 25-40% increases and still getting the business, then they know that is what the market will bear. I had a client have a 100% increase this year, and that was far and away the best option. Her next best options were $50,000 higher or more. It's rough, but that's just where the market is.
In terms of "catastrophic" insurance, it's usually not worth it. I will explore options for my clients like doubling their wind/hail or named storm deductible, and generally the premium savings is minimal. I do have some coastal clients that have fire only policies and forego having wind/hail/named storm coverage. But overall, the savings you think you might get usually aren't there.
If OP wants me to review, email is username at gmail. I can at least tell you if it's competitive
No idea why that emoji was selected. Probably bc the dog jumped on my phone when posting bc I wouldn't throw her ball