Determine the property boundary. This information is available at your local records office if you don't have it on hand.
Walk along one side of your property's perimeter with a distance-measuring wheel. These wheels are rolled in front of someone walking and measure the distance they've traveled -- usually in feet -- and usually have analog displays that show the amount of feet the device has been rolled.
Write down the amount of feet recorded on the distance-measuring wheel.
Walk along the remaining boundaries of your property and write down the length in feet after completing each side.
Add together the length of all the sides once you're finished. This number is the total perimeter length of your property.