A property survey looks like a scaled technical drawing of a parcel of land, printed on a large sheet or delivered as a PDF, with the boundary drawn as a bold outline, every corner labeled with a direction and a length, structures and easements plotted inside the lines, a legend of symbols in one corner, a written legal description, and a title block carrying the licensed surveyor’s seal and signature. If you have never opened one before, it reads more like an engineering plan than a map.
The First Things You See on the Page
Look at the lower-right corner first. That is where the title block sits, listing the property address, the client’s name, the date the fieldwork was completed, and the drawing scale. In or beside the block you will find the surveyor’s name, license number, signature, seal, contact information, and project number. The seal is what makes the document official. Without it, the survey carries no legal weight.
The rest of the sheet is taken up by the drawing itself. A north arrow sits near the top, pointing up when the geometry allows. A small vicinity map in a corner shows roughly where the parcel sits in relation to nearby roads. If the property is complex, you may see zoomed-in callouts or additional sheets attached to the main one.
The Boundary Line and Its Numbers
The property boundary is drawn as a bold or distinctly styled line, heavier than anything else on the page so you can pick it out at a glance. Along each straight segment of that line you will see two numbers: a bearing and a distance.
A bearing looks like N 45° 30′ 15″ E. Read it as an angle swinging east or west off due north or due south; the figures after the degree symbol are minutes and seconds of arc, the same way an hour divides into minutes and seconds. The distance beside it is in horizontal feet. So “N 45° 30′ 15″ E, 150.00′” means that line runs northeast at that precise angle for exactly 150 feet. Follow the bearings and distances around the drawing in order and you trace the whole perimeter, returning to the point where you started.
Corner Monuments
At every corner of the boundary, the survey notes what physical marker is there. These markers are called monuments, and they are usually iron rods, rebar stakes, concrete pins, or aluminum caps set flush with or just below the ground. If a corner already had a monument when the surveyor arrived, the drawing says so; if the surveyor set a new one, the drawing says that too. Abbreviations like IPF for “iron pin found” or CMP for “concrete monument placed” show up next to each corner symbol. Knowing where your monuments sit lets you find a corner in the field on your own.
Everything Else Drawn Inside the Lines
A survey is not just an outline. It plots the significant features of the property, measured against the boundary lines.
- Houses, garages, sheds, driveways, fences, retaining walls, and decks appear in their measured positions. The distance from each structure to the nearest property line, called the setback, is often labeled.
- Easements and rights-of-way, where someone else has a legal right to use part of the land, are drawn as dashed or hatched zones overlaying the parcel, with a label identifying the type and the recorded document that created them.
- Encroachments are flagged where they occur: a neighbor’s fence crossing onto your land, or your shed sitting partly on theirs. These are among the most consequential things a survey can show.
- Visible utility features such as manholes, hydrants, overhead power lines, and utility poles are typically marked. Underground utilities appear when the client specifically requests that work.
- Flood zone classification is plotted when requested, showing where the parcel sits relative to federal Flood Insurance Rate Maps.
The Legend
Every survey carries a legend, usually tucked into one corner, that decodes the symbols and line types used across the drawing. A solid heavy line is likely the boundary. A dashed line may be an easement. A dotted line often means an underground utility. Small circles, triangles, and crosses stand for different monument types, and the abbreviations above are defined here. Reading the legend first saves you from misreading everything else.
The Written Legal Description and Notes
Alongside the drawing you will find a block of text called the legal description. It defines the property in words without relying on the picture. The most common format is called metes and bounds: it starts at a defined point of beginning and traces the perimeter in the same bearings and distances shown on the drawing, eventually closing back on the starting point. The description also states the total acreage and identifies the county and state. This is the language that appears in your deed, so it has to match exactly.
Below or beside the drawing you will see notes and disclaimers. These may explain the basis of bearings (the reference direction the surveyor used), list the deeds and plats the surveyor relied on, flag any uncertainties in the boundary, or record statements from neighboring landowners about where they understand the line to be.
How the Type of Survey Changes What You See
Not every property survey looks the same. The level of detail on the page depends on what the surveyor was hired to produce.
Boundary Survey
The most common residential survey. It shows the boundary with bearings and distances, marks the corners with monuments the surveyor physically sets in the ground, and plots improvements, easements, and encroachments. If you are reading a survey ordered for a fence, a pool, or a line dispute, this is probably what you have in front of you.
ALTA/NSPS Land Title Survey
Follows strict national standards jointly published by the American Land Title Association and the National Society of Professional Surveyors. It includes everything a boundary survey does, plus items the client selects from a standardized menu called Table A: flood zone classification, zoning setback requirements, building dimensions and square footage, parking counts, evidence of underground utilities, and more.1American Land Title Association. Minimum Standard Detail Requirements for ALTA/NSPS Land Title Surveys You will usually see these in commercial transactions. They are denser and more heavily annotated than a basic boundary survey.
Mortgage Location Survey
A lighter drawing. It shows property lines pulled from the recorded legal description and locates the improvements, but the surveyor does not physically mark the corners or resolve boundary discrepancies. Because the lines come from the deed rather than from independent surveyor calculations, the margin of error is wider. It will look similar to a boundary survey at first glance, but no monuments are set, and it is not sufficient for building a fence or anything else that requires knowing exactly where the property ends.
Topographic Survey
You will recognize one instantly: the drawing is covered in a web of contour lines, each labeled with an elevation number. A topographic survey maps the terrain rather than the ownership boundaries, showing grades, drainage patterns, streams, tree lines, and rock outcroppings. Engineers and architects use these to plan construction and grading. Some projects combine a topographic survey and a boundary survey on a single sheet.
Whichever type is in your hands, the sealed title block tells you who prepared it and when, the bold line tells you where your land ends, the numbers along that line tell you the exact geometry, and the legend tells you how to read everything else on the page.