Five methods to locate your boundaries — from free online research to hiring a licensed surveyor.
Knowing where your property lines fall is essential before you build a fence, plant trees near the boundary, install a driveway, or settle a dispute with a neighbor. The problem is that property lines are invisible — there is nothing painted on the ground to show you where your land ends and your neighbor's begins.
Fortunately, there are several ways to find your boundaries, ranging from free online research to professional surveys. The right method depends on how precise you need to be and what you plan to do with the information. This guide walks through five approaches, starting with the easiest and most affordable.
For quick planning and general reference, online tools and county GIS maps work well. For anything involving construction, legal disputes, or permanent structures near the boundary, a professional survey is the only reliable answer.
Your property deed contains a legal description of your lot — either a metes and bounds description (bearings and distances tracing the boundary), a lot and block reference (pointing to a recorded plat map), or both. This is the foundational document that defines your property.
Where to find your deed. Check the closing documents from your home purchase first. The deed should be in the packet from your title company. If you cannot find it, search your county recorder or clerk of court website — most counties allow you to search by owner name, address, or parcel number. Many have digitized records available for free online.
What to look for. A metes and bounds description will list bearings and distances for each boundary line, starting from a Point of Beginning. A lot and block description will reference a specific lot number within a recorded subdivision plat. In either case, the deed tells you the shape and dimensions of your property but does not show you where the lines fall on the ground without a survey.
Plat maps. If your deed references a lot and block, the corresponding plat map shows the physical layout of your subdivision with lot dimensions, street locations, and easements. Plat maps are recorded with the county and are usually available online or at the recorder's office.
Most counties maintain a Geographic Information System (GIS) that displays parcel boundaries overlaid on aerial imagery. These online mapping tools are free and accessible to anyone. They give you a visual approximation of where your property lines fall relative to your house, driveway, and other features.
How to access county GIS. Search for your county name followed by "GIS" or "parcel viewer" or "property map." Most county assessor websites have a link to their GIS mapping tool. You can search by address, owner name, or parcel number. The map will show your lot outlined on top of satellite or aerial photography.
What you can learn. County GIS maps typically show parcel boundaries, lot dimensions, acreage, zoning information, assessed values, and sometimes easements and flood zones. Some counties also provide links to recorded deeds, plat maps, and tax records directly from the GIS interface.
Accuracy limitations. County GIS data is compiled from various sources and is not survey-grade accurate. Parcel lines may be offset by 3 to 10 feet or more from their true location. The aerial imagery and parcel data may also be from different years, creating misalignment. Use GIS maps for research and general reference, not for placing structures or resolving disputes.
Want a quick visual reference? View your property line map on LotSight →
If your property was surveyed in the past, there are likely physical markers — iron rebar, iron pipes, or concrete monuments — at each corner of your lot. Finding these markers is the most direct way to identify your boundary lines on the ground without hiring a new surveyor.
Where to look. Start at the corners of your lot. If you have an existing survey or plat map, it will show the approximate location of each marker. Look for iron pins at the front corners of your lot near the sidewalk or road edge, and at the rear corners along the back property line. Markers are often near the intersection of fences, hedgerows, or changes in landscaping.
Using a metal detector. Survey pins are commonly buried under grass, soil, or mulch. A basic metal detector ($30 to $100 for a rental or inexpensive model) can locate iron pins and pipes below the surface. Set the detector to identify ferrous metals and sweep slowly in the expected area. Most pins are within the top 6 inches of soil.
Identifying what you find. Survey markers are typically half-inch or five-eighths-inch iron rebar, sometimes with a plastic or aluminum cap stamped with a surveyor's license number. Older markers may be iron pipes or railroad spikes. If you find a capped rebar, the license number on the cap can help you trace the original surveyor.
Important: Never remove survey markers. In most states, it is illegal to knowingly remove, destroy, or disturb a survey monument. If you find markers, leave them in place and note their locations.
A licensed professional land surveyor is the only person who can establish legally defensible property boundaries. If you need precision for construction, permits, boundary disputes, or real estate transactions, this is the method you need.
What a surveyor does. The surveyor researches your deed, examines recorded plat maps and prior surveys, then goes to the field with specialized equipment — total stations, GPS receivers, and data collectors — to measure from known reference points and locate or set markers at your property corners. The result is a certified survey drawing that serves as a legal document.
When to hire a surveyor. You should hire a surveyor before building a fence on or near the property line, adding a room, garage, or outbuilding, buying or selling property (if required by the lender or title company), resolving a boundary dispute with a neighbor, or subdividing your lot. For any project that requires a building permit, the municipality may require a survey or site plan.
How to find one. Search your state board of licensure for licensed surveyors in your area. You can also ask your title company, real estate agent, or local building department for recommendations. Get at least two or three quotes — pricing can vary significantly between firms.
What to expect. A typical residential boundary survey takes one to three weeks from scheduling to delivery. The surveyor will spend a few hours to a full day in the field, then prepare the survey drawing in the office. You will receive a certified plat with markers set at each corner. Total cost for a standard residential lot is $300 to $800.
Online mapping tools like LotSight overlay parcel boundary data on high-resolution satellite imagery, giving you a visual reference of your property lines from your computer or phone. These tools pull from county assessor data and public records to display your lot shape, dimensions, and approximate boundary locations.
How they work. These tools geocode your address, retrieve parcel data from public records, and display the lot boundary on top of recent satellite imagery. You can zoom in to see how the boundary relates to your house, driveway, fences, trees, and other features. Some tools also calculate lot area and perimeter measurements.
Best uses. Satellite boundary tools are excellent for getting a quick visual overview before starting a project, estimating fence lengths and material needs, checking whether a neighbor's structure might encroach on your property, and having a reference image to discuss with contractors or surveyors.
Limitations. Like county GIS maps, these tools are based on assessor data and are not survey-grade accurate. They provide an approximation, not a legal boundary determination. For precision work, use them as a starting point and follow up with a professional survey if needed.
Try it now — view your property line map →
DIY methods are fine when: You want a general idea of where your lines fall for planning purposes. You are deciding where to plant a garden, estimating how much fence material to buy, or checking whether a neighbor's new structure looks like it might be close to the line. Use deed records, county GIS, satellite tools, and pin searching for these situations.
Hire a surveyor when: You are building a fence on or near the property line, constructing any permanent structure that needs a building permit, buying or selling your home, resolving a boundary dispute with a neighbor, or subdividing your property. In these cases, an approximate boundary is not good enough — you need the legally established line.
The cost of getting it wrong. A fence built a few inches over the property line can result in forced removal and reinstallation — a cost that far exceeds the $300 to $800 price of a boundary survey. A structure that violates setback requirements may need to be demolished. And a boundary dispute that escalates to litigation can cost tens of thousands of dollars in legal fees. A survey is the cheapest insurance you can buy.
Enter your address to view your property boundaries overlaid on satellite imagery — free and no survey appointment needed.
View your property line map or read our guide on how to read a property survey.