A buyer closes on a property. Six months later, they find out the fence their neighbor put up three years ago sits four feet inside their lot. The neighbor won’t move it. The title company says it’s not their problem. The attorney bills start piling up. All of it could have been caught before closing with a proper home survey.

Skipping a survey to save $500 on a $400,000 purchase is one of the worst financial decisions a buyer can make. The math doesn’t work in your favor.

What a Home Survey Actually Tells You

A home survey is a field-verified document prepared by a licensed land surveyor. It shows the legal boundaries of a parcel, the location of existing structures, and any encroachments or easements on the property.

It is not a home inspection. A home inspection looks at the condition of the building. A survey looks at the land itself and where everything sits on it.

These are two separate documents. You need both.

What Buyers Find Out From Home Surveys

Most buyers assume the property they’re buying matches what’s described in the listing. That assumption fails more often than it should.

A survey can reveal:

• A structure that crosses a property line onto adjacent land
• A neighbor’s driveway, shed or fence that sits inside the subject property
• A utility easement that cuts through the yard and limits what can be built there
• A garage or addition that was built too close to the property line and doesn’t meet current setback requirements
• Lot dimensions that don’t match what the listing stated

None of these issues appear in a title search. Title searches look at recorded documents. A survey looks at what’s actually on the ground.

Why Title Insurance Doesn’t Replace a Survey

Title insurance is not the same as a survey, and buyers often confuse the two.

Title insurance protects against defects in the chain of ownership. It covers things like forged deeds, unpaid liens, or errors in public records. What most standard title policies don’t cover is physical encroachments that would have been visible from a current survey.

Read that again. If you don’t get a survey and an encroachment exists, many title policies won’t pay out because the issue was “discoverable.” You had the chance to find it and didn’t.

Some lenders require an ALTA survey for commercial transactions. For residential deals, surveys are often optional. Optional doesn’t mean unnecessary.

When to Order a Home Survey in the Buying Process

Order it during the due diligence period. That window exists for a reason.

Most purchase agreements give buyers a set number of days to inspect the property and back out if something material comes up. A survey finding qualifies as a material issue. If the survey reveals an encroachment or easement that affects the intended use of the property, the buyer has grounds to renegotiate or walk away.

Order it after the purchase agreement is signed and before the due diligence window closes. Don’t wait until closing week.

The surveyor needs time to pull existing records, schedule field work and prepare the final document. Depending on the firm and the complexity of the parcel, that can take one to three weeks. Build it into the timeline.

Types of Surveys Relevant to Home Purchases

Not every survey is the same. Here’s what buyers commonly encounter.

Boundary Survey This is the base-level document. It verifies the legal corners of the lot and shows where the property lines actually fall. For residential purchases, this is the minimum a buyer should request.

Mortgage Location Survey or ILC An Improvement Location Certificate shows where existing structures sit relative to the lot lines. It’s cheaper than a full boundary survey but offers less legal protection. Some lenders accept it in place of a boundary survey, but it’s not the same thing and shouldn’t be treated as equivalent.

Topographic Survey Useful if the buyer plans to build, grade or add drainage improvements. Shows elevation changes across the lot. Buyers who plan to develop the property further should ask about this.

For a standard home purchase with no planned construction, a current boundary survey is what you need.

What Happens If You Skip the Survey and Find a Problem Later

Discovering an encroachment after closing puts the buyer in a difficult position. Options typically include:

• Negotiating a boundary line agreement with the adjacent property owner (requires both parties to agree and legal documentation)
• Filing a quiet title action to establish legal ownership of the disputed area (expensive and slow)
• Removing the encroaching structure if it’s on your side (your cost)
• Living with the problem and disclosing it when you sell

None of these are good. The legal fees alone on a boundary dispute can run $5,000 to $30,000 or more, depending on how contested the issue becomes. Surveys typically cost $400 to $1,200 for a standard residential parcel.

Who Can Legally Prepare a Home Survey

Only a licensed professional land surveyor (PLS or RPLS depending on the state) can prepare a legally valid boundary survey. The requirements for licensure include a combination of education, field experience and a state licensing exam.

Don’t accept a survey prepared by an unlicensed person. Don’t accept a copy of an old plat map and assume it’s current. Property conditions change. Structures get added. Fences move. The survey needs to reflect current conditions.

Verify the surveyor’s license through your state licensing board before hiring.

Frequently Asked Questions

Is a home survey required to buy a house?

In most residential transactions, a survey is optional rather than required by law. Some lenders require one for certain loan types. Even when it’s optional, skipping it creates real risk. An undiscovered encroachment or easement can become a legal and financial problem after closing.

How long does a home survey take?

Most residential boundary surveys take one to three weeks from the time of order. That includes pulling existing deed records, scheduling field work and preparing the final document. Order early in the due diligence period, not at the end.

Can an old survey from a previous sale be used?

Old surveys may no longer reflect current conditions. Structures can be added, fences can move and lot line agreements can be recorded after a survey was prepared. Ask the surveyor to review the existing document. In many cases, an update or new survey is the safer choice.

What’s the difference between a boundary survey and an ILC?

A boundary survey establishes the legal corners of the lot through field measurement. An Improvement Location Certificate shows where structures sit relative to the approximate boundary. The ILC is faster and cheaper, but it doesn’t carry the same legal weight. If you’re buying a property and want a document you can rely on in a dispute, a boundary survey is the stronger choice.

What should a buyer do if the survey finds a problem?

Bring it to your real estate attorney before closing. Depending on what the survey shows, options include negotiating a price reduction, requiring the seller to resolve the issue before closing, or backing out during the due diligence period. Don’t close on a known boundary problem without a written resolution in place.