What Is a Mortgage Inspection?

A mortgage inspection is a low-cost drawing prepared for a lender or title company that shows the approximate location of the house and other improvements on a lot, so the lender can confirm the building sits roughly where it should and nothing obvious encroaches. It is not a boundary survey. No corners are set, the property lines shown are usually scaled or computed rather than measured and monumented, and in several states the document is required by rule to carry a disclaimer saying it must not be used to establish fence or building lines. It exists to protect the lender's collateral, not to tell you where your property ends.

This distinction costs homeowners real money every year. A buyer closes, receives a drawing that looks like a survey, files it away, and three years later builds a fence off it. The fence lands two feet onto the neighbor. Now there is a survey, a lawyer, and a fence to move.

What does a mortgage inspection show?

It shows the lot as a simple outline with the house, driveway, garage, deck and other visible improvements sketched in approximate position, plus rough setback dimensions from the structure to the lines. The surveyor typically recovers one or two corners at most, ties the improvements to those, and computes the rest from the recorded plat. The result answers the lender's question, which is "is there a house of about this size, sitting about here, with no glaring encroachment," and nothing more.

Mortgage inspection vs boundary survey

The clearest way to see the gap is side by side. Note that names vary by state: mortgage inspection, mortgage location survey, mortgage loan inspection, spotted survey, house location survey and improvement location certificate all describe roughly this same product.

Is a mortgage inspection a legal survey?

In most states, no, and the rules say so directly. Several state surveying boards require the document to be labeled something other than "survey" and to carry mandatory disclaimer language stating that it is not a boundary survey and that no reliance should be placed on it for locating fences, buildings or other improvements. Illinois treats a mortgage inspection as a distinct, lesser product from a plat of survey. Colorado draws the same line between an improvement location certificate and an improvement survey plat. The names differ; the legal effect is consistent.

Why do lenders order one instead of a survey?

Cost and speed. A mortgage inspection is a fraction of the price of a boundary survey and often turns around in a couple of days, because it skips the expensive part: the deed and adjoining-deed research, the field recovery of every corner, and the professional judgment that reconciles record against monument. What a mortgage survey costs and when a lender will accept one is broken down on that page. For a lender writing a loan against a tract house in a platted subdivision, that level of rigor is more than the risk requires. For you, deciding where to pour a foundation, it is not.

Do I need a survey if I already got a mortgage inspection at closing?

You need one if you are about to rely on where your lines are. Building a fence, addition, garage, pool or driveway near a line, resolving a disagreement with a neighbor, subdividing, or applying for a permit that requires a sealed survey all call for a real boundary survey. If you are simply refinancing or nothing is being built, the inspection has already done its job and you do not need anything more. The test is simple: if a decision will move dirt or concrete, get the survey.

Can I use a mortgage inspection to build a fence?

No, and this is the single most common expensive mistake. The drawing's dimensions are approximate and the document usually states in writing that it may not be used for that purpose. A fence built off a mortgage inspection has no defensible basis if the neighbor challenges it, and if it turns out to sit over the line you may be ordered to move it at your own cost. Before any fence, order a survey for a fence so the corners are physically marked.

How much does a mortgage inspection cost?

Typically $150 to $350, and it is often bundled into closing costs so buyers never see it as a separate line. A boundary survey on the same lot generally runs $450 to $900. The spread is why lenders order the cheaper product, and why the upgrade is usually worth paying for out of pocket when you plan to build. Our land survey cost guide breaks down what drives price for every survey type, and costs by state shows how regional the numbers get.

What should I ask for at closing?

Ask the title company directly: "is the survey product in this file a boundary survey or a mortgage inspection?" Then look at the drawing itself. A boundary survey names itself as one, carries the surveyor's seal and a certification statement, shows bearings and distances on every line, and identifies the monument found or set at each corner. A mortgage inspection carries a disclaimer instead. Anything that says "this is not a boundary survey" is telling you the truth, and it is worth reading before you sign. If your loan approval is the part still in question rather than the property, understanding what is actually driving your credit score tends to matter more than the survey line item.

The bottom line

A mortgage inspection is a lender's collateral check, priced and scoped accordingly. It is useful for what it is and dangerous when mistaken for a survey. If you are buying, know which one you are getting. If you are building, order a boundary survey regardless of what is in the closing file. Describe your project in the matcher on the Surveyors.io homepage and compare up to three quotes from license-verified local surveyors within about 24 hours.