Quick answer
For the first conversation specifically, just your current policy’s declarations page is genuinely enough to start. That single document tells us your existing dwelling limit, liability limit, and carrier, which is all we need to begin identifying where the gaps likely are.
Everything else, appraisals, vehicle details, a full valuables inventory, gets gathered as the review progresses, not before it starts. We cover the complete category-by-category list in our documentation requirements guide, but don’t wait until you have all of it to reach out.