Confirm the boundary
A survey is cheap against removal.
Built beautifully, a foot onto the neighbour's property, with no survey.
The costliest failure in fencing has nothing to do with workmanship. A fence placed on a neighbour's land can be ordered removed, and the owner who paid for it pays again to take it out. Nobody discovers this until a survey happens for some other reason, often years later at a sale.
The second non-negotiable is the utility locate. Calling 811 before excavation is required by Florida law for good reason: a post hole through a gas or fibre line is dangerous and expensive, and the pressure to start a day early is never worth it.
And pool barriers are a category of their own. Height, gap dimensions and self-closing, self-latching gates are specified by statute rather than preference, because the thing they are there to prevent is a child drowning. A design that looks better and fails the code is not a design worth building.
A survey is cheap against removal.
811 is law, not a courtesy.
Statute, not preference.
A free on-site quote, with no obligation.