Assuming “the HOA covers everything.”
Many condo owners never read the master policy or CC&Rs and only learn after a loss that interior finishes, betterments, and personal property are their responsibility, not the association’s. A quick review of the master declarations and a conversation with your agent can prevent expensive surprises.
Not matching the HO-3 or HO-6 to the master policy type.
If your association has a bare‑walls master policy, your HO‑6 needs enough dwelling coverage to rebuild the unit interior from the studs in; under an all‑in policy, you may only need enough Coverage A to handle upgrades and betterments. Using a generic condo policy without checking the HOA’s coverage structure is one of the fastest ways to end up underinsured.

Carrying too little loss assessment coverage.
Master policy deductibles of $10,000–$25,000 or more mean a single building claim can translate into a large per‑unit special assessment. Many base HO‑6 policies only include a small amount of loss assessment coverage unless you intentionally increase the limit, leaving owners exposed to multi‑thousand‑dollar bills.
Ignoring rising deductibles and building values.
As premiums increase, HOAs often raise deductibles or hold coverage limits flat to control costs. If your HO‑6 hasn’t been revisited in several years, your dwelling and loss assessment limits may no longer match today’s construction costs or the association’s current deductibles.
Failing to coordinate landlord and tenant coverage.
In investor‑heavy communities, some owners assume the HOA master policy and a basic rental endorsement are enough. In reality, a landlord policy still needs to coordinate with the master policy type, and tenants should carry renters insurance for their belongings and personal liability inside the unit.
The fix for all of these mistakes is simple but not automatic: start with the HOA documents, obtain the master policy declarations, and then have your agent build or adjust your HO‑3 or HO‑6 so that the two policies function as a single, coordinated coverage plan.
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