A new fence near your property line can raise an uncomfortable question: Is your neighbor building on land that belongs to you? If the placement looks wrong, you may hesitate to say anything. You might want to avoid conflict or wait until you have more facts.
A short delay does not automatically affect your property rights. A long one, however, could make a later dispute harder to resolve. Washington law recognizes laches, a legal doctrine that focuses on unreasonable delay and the harm that delay causes. Understanding how it works may help explain why timing matters when a new fence raises a boundary concern.
Waiting too long could weaken your position
Laches is a legal doctrine that allows a court to deny relief when someone waits an unreasonable amount of time to bring a valid claim and that delay harms the other party. In Washington, delay by itself does not establish laches. Courts also look at the effect the delay had on the other side.
In a boundary dispute, that harm could grow as time passes. Your neighbor might spend money on more work or rely on the fence when making changes near the disputed line. Records may become harder to find and witnesses could remember less. These facts do not decide who owns the land, but they may make a later dispute harder to resolve.
Keep a record when the fence goes up
Since timing and changing conditions may matter, consider keeping a simple record when you first notice the fence. Photos might show where it sits next to visible boundary markers. You could also note when construction began and whether the location changed as the work continued.
Your deed or a past property survey may provide useful context. These records can help you compare the new fence with the boundary shown in documents you already have. The fence itself does not prove who owns the land.
A dated record could also show when you first noticed the issue. That information may help establish a clearer timeline if a dispute develops later.
Prepare before the dispute grows
You do not need to treat every questionable fence as the start of a lawsuit. Consider checking your property records and keeping track of construction near the boundary. Understanding the issue may help you prepare better if you later need to address a boundary dispute.

