A backyard fence, detached shed, or concrete patio may seem like a straightforward feature of a home. But what happens when part of that structure crosses the legal property line? Buyers sometimes discover this issue during the title or survey review, just as they are preparing to close. Known as an encroachment, it can raise questions that go beyond neighborly disagreements and may affect the mortgage process.

What Is an Encroachment?

An encroachment occurs when a structure or improvement extends onto land owned by someone else. Common examples include a fence installed several feet over the boundary, a driveway that overlaps an adjacent parcel, or a shed built partly on a neighbor’s lot. The opposite can happen too: a neighbor’s structure may extend onto the property you plan to buy.

Not every apparent boundary issue is an actual encroachment. Landscaping, old fence lines, and informal neighborhood arrangements can make property boundaries difficult to judge by sight alone. A survey and the recorded property description can help clarify what is happening.

Why It Can Matter to a Lender

A mortgage lender wants to understand whether the property offers acceptable security for the loan. A significant encroachment may affect the property’s marketability, value, or the owner’s ability to use part of the land. Title insurers may also need to determine whether they can provide the coverage required by the lender.

The seriousness depends on the facts. A small fence issue may be treated differently from a garage that extends onto another parcel. The location of the improvement, local rules, loan program, and available documentation all matter. An encroachment does not automatically make a home ineligible for financing, but it may prompt additional review.

What Buyers Should Ask

If a survey or title report identifies a possible encroachment, ask your real estate agent and title professional to explain exactly where it is and what documents exist. Find out whether the parties have a recorded agreement, easement, boundary adjustment, or another legally recognized solution. Ask the lender whether the issue needs to be resolved before closing.

Avoid relying solely on a seller’s assurance that the neighbors have never complained. A friendly arrangement today may not answer questions about future ownership or resale. Depending on the situation, a real estate attorney or licensed surveyor may need to help determine the next step.

The best time to uncover a boundary problem is before the final days of a transaction. Reviewing the available records early can help buyers understand the risk, evaluate possible solutions, and keep an unexpected property line issue from becoming a last-minute mortgage surprise.