Is it for public picnic shelters, a community park shelter, or a residential gazebo. Be sure to design your structure with furnishings and other fixtures in mind and be sure to include enough space for a picnic table!
Are you looking to build a basic shelter or an outdoor pavilion with a dining area? Will a masonry BBQ pit be included? Are you considering a full kitchen with appliances?
Be mindful of the effects of wind-driven rain in sizing and orienting your outdoor pavilion. If you want to use your structure in inclement weather, consider the possibility of partially enclosing the structure and adding supplemental heat.
If protection from insects is a concern, consider a screened-in approach. If the structure will be used for night entertainment, be sure to include electrical requirements in your plan. If building in a hotter climate, the addition of a ceiling fan is a nice feature.