How to Find Property Pins with a Metal Detector: A Land Surveyor’s Guide
Finding property pins doesn’t have to be a treasure hunt worthy of Indiana Jones. With the right metal detector, a little know-how, and some good old-fashioned patience, you can accurately locate those elusive markers and confidently define your property lines.
The Direct Answer: Using a Metal Detector to Locate Property Pins
To find property pins using a metal detector, the process is straightforward, but precision is key. First, obtain a plat map or survey of your property. This map provides the coordinates and relative locations of the pins. Next, input these coordinates into a GPS device for accurate navigation to the approximate pin locations. Calibrate your metal detector according to the manufacturer’s instructions and optimize the sensitivity for small metal objects buried in the soil. Now, systematically sweep the metal detector coil over the designated area, paying close attention to the meter readings and audio signals. When you receive a strong signal, carefully excavate the area using a small trowel or shovel. Property pins are typically buried just below the surface, so exercise caution to avoid damaging them. Once unearthed, confirm that the pin matches the description on your plat map.
Preparing for the Hunt
Research and Due Diligence
Before you even think about grabbing your metal detector, do your homework. Locate your property’s plat map or survey. These documents are typically available at your local county recorder’s office or online through the county’s GIS (Geographic Information System) portal. The plat map shows the dimensions of your property and the location of the property pins (often marked as iron pins, iron pipes, or monuments). Understanding your property’s layout is paramount.
Metal Detector Selection and Settings
Not all metal detectors are created equal. For property pin hunting, you’ll want a detector that’s sensitive to small metal objects. Many mid-range metal detectors are perfectly suitable. The key is to adjust the settings properly.
- Sensitivity: Start with a high sensitivity setting, but be prepared to reduce it if you encounter too much interference from ground mineralization.
- Discrimination: Minimize discrimination to ensure you’re detecting all metal objects, even small ones. Property pins are often made of iron or steel, which can be easily discriminated against if you’re not careful.
- Ground Balance: If your metal detector has ground balance capabilities, use them to minimize interference from the soil. This is particularly important in areas with high mineral content.
- Frequency: Higher frequency metal detectors are generally better at finding small objects.
Essential Tools and Safety Gear
Besides the metal detector and plat map, gather the following:
- GPS Device or Smartphone with GPS: To help you navigate to the approximate pin locations.
- Small Shovel or Trowel: For carefully excavating around potential pin locations.
- Pin Pointer: A handheld metal detector that helps pinpoint the exact location of the pin within the excavated soil.
- Gloves: To protect your hands.
- Eye Protection: Safety glasses or goggles to prevent soil from getting into your eyes.
- Spray Paint or Survey Marking Tape: To mark the location of the found pins.
- Measuring Tape or Wheel: To verify distances between pins and property lines.
The Search Strategy
Locating Approximate Pin Positions
Use your GPS device and plat map to identify the approximate locations of the property pins. Mark these locations with flags or stakes. This will narrow your search area and make the process more efficient. Don’t expect the GPS to be perfectly accurate; it will get you within a few feet, but the metal detector will do the rest.
Sweeping Technique
Slow and steady wins the race. Sweep the metal detector coil slowly and methodically over the designated search area, overlapping each sweep slightly. Maintain a consistent coil height above the ground. Listen carefully to the audio signals. A sharp, distinct tone is what you’re looking for.
Excavating with Care
When you get a strong signal, carefully excavate the area. Remove the soil in small increments, checking the hole with your pin pointer after each scoop. The property pin might be buried just a few inches below the surface, or it could be a foot or more down. Be patient and avoid digging too aggressively.
Identifying the Pin
Once you’ve unearthed a metal object, examine it closely. Property pins typically have a specific shape and marking. They are often iron rods or pipes with a cap or survey marker attached. Compare the pin to the description on your plat map to ensure it is the correct one.
Dealing with Challenges
Interference and False Signals
Metal detectors can be susceptible to interference from various sources, including power lines, underground utilities, and buried trash. If you encounter a lot of false signals, try reducing the sensitivity of your metal detector or moving to a different location. Pay attention to the sound of the signals. Legitimate pin signals are usually sharp and consistent, while false signals tend to be erratic and fleeting.
Buried Deep
Sometimes, property pins can be buried quite deep, especially if the property has been graded or filled over the years. If you’re not finding the pin at a shallow depth, dig deeper, but be careful not to damage any underground utilities. If you still can’t find the pin, consider consulting with a professional land surveyor.
Lost or Missing Pins
In some cases, property pins may be missing altogether. This can happen if they’ve been removed during construction or landscaping. If you can’t find a pin, check the adjacent property corners. If those pins are present, you can measure the distance between them to reconstruct the missing corner. If not, you’ll likely need to hire a surveyor to reestablish the property corner.
FAQs: Your Questions Answered
Here are some frequently asked questions to further assist you:
1. Is it legal to use a metal detector to find property pins?
Yes, it is generally legal to use a metal detector on your own property to find property pins. However, always check local ordinances and regulations to ensure you are in compliance. Be mindful of trespass laws if you need to search near the property line.
2. What type of metal detector is best for finding property pins?
A mid-range metal detector with adjustable sensitivity, discrimination, and ground balance is ideal. Look for a detector specifically designed for finding small metal objects.
3. How deep are property pins usually buried?
Property pins are typically buried between a few inches and a foot below the surface. However, this can vary depending on the soil type, erosion, and any previous landscaping or construction activities.
4. What do property pins look like?
Property pins are usually made of iron or steel and can be rods, pipes, or survey markers. They may have a cap with a survey marker number or other identifying information.
5. Can I use a metal detector indoors to find property pins?
No, metal detectors are not typically used indoors to find property pins. Property pins are boundary markers for outdoor properties.
6. What should I do if I find a lot of trash while searching for property pins?
Remove the trash carefully and continue searching. Trash can interfere with your metal detector signals, so clearing it away will improve your chances of finding the pin.
7. How accurate are metal detectors for finding property pins?
Metal detectors can be very accurate for finding property pins, especially when used in conjunction with a plat map and GPS.
8. What if I can’t find my property’s plat map?
You can usually obtain a copy of your property’s plat map from your local county recorder’s office or online through the county’s GIS portal.
9. Should I contact a professional land surveyor instead of using a metal detector?
If you’re unsure about the location of your property boundaries or if you suspect that a property pin is missing or has been moved, it’s best to consult with a professional land surveyor.
10. Can weather conditions affect my ability to find property pins with a metal detector?
Extreme weather conditions, such as heavy rain or snow, can make it more difficult to use a metal detector. Dry conditions are generally best for metal detecting.
11. How do I mark the location of a property pin once I find it?
Use spray paint or survey marking tape to clearly mark the location of the property pin. This will help you easily identify it in the future.
12. Is it okay to move a property pin if I find it?
Never move a property pin. Property pins are legally significant markers, and moving them can have serious legal consequences. If you believe a property pin has been moved, consult with a professional land surveyor.
By following these guidelines and using a metal detector with care, you can successfully locate your property pins and gain a better understanding of your property boundaries. Happy hunting!
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