Do I need a survey before building a fence?

Legally, many places don't require one. In practice, a survey is the safest way to avoid putting a fence on your neighbor's land ^[2].

You might not need a new survey if:

• you have a recent survey, and the corner monuments are still in place and easy to find ^[1],
• the fence will sit well inside your line, and
• your city's permit doesn't ask for a survey.

A fresh survey or corner staking is wise when:

• you'll build close to the line,
• the monuments are missing or disturbed,
• there's any history of disagreement, or
• the permit office asks for a plot plan.

Fence contractors usually aren't licensed surveyors. Ask a licensed surveyor to stake the line before digging. It costs far less than moving a fence later ^[3].