One number on your policy is probably small. Your building's deductible probably isn't.
Condo insurance looks simple. The association insures the building, you insure your stuff, and everyone gets on with life. That story holds up until the building has a serious problem. Around Chester County that's usually water: a pipe that bursts in a January cold snap and runs through several units, an ice dam on a shared roof, or a creek that rises the way the Brandywine did after Ida.
When a loss exceeds the master policy limits, or the master policy has a large deductible that somebody has to pay, the board can levy a special assessment and split the cost among every owner. Now it's your bill, in an amount you didn't choose. Run it once with round numbers: for example, if a loss runs $500,000 past what the master policy pays, and the community has 50 units, that's about $10,000 per owner.
Your HO-6 has a coverage built for exactly this, called loss assessment. The default limit on many policies is small, which against a five- or six-figure shortfall falls well short. Raising it often costs relatively little. One more piece of fine print to ask about: some policies cap the portion of an assessment that comes from the master deductible, no matter how much loss assessment coverage you bought. We check that clause by name.
The second thing nobody tells condo owners: your declaration and bylaws, not your policy, define where the association's responsibility ends and yours begins. Older communities and amended declarations can draw that line in different places. So the right way to insure a condo is to start with the master policy declarations page and the declaration, then build the HO-6 to fit the gap they leave. Then we compare more than one option to find the right fit. Bring the paperwork.