Things You'll Need
Instructions
Examine your property and look for small hills or a raised area in the land that would be large enough to hold a storage cellar. Or if building under your home, consider whether the foundations can accommodate it.
Determine the temperature and humidity of the area where you will build your cellar. Optimally, it needs to be in the range of 32 to 40 degrees Fahrenheit for temperature and 85 to 90 percent for humidity.
Look at the area and determine where your ventilation will be and how it will be employed, whether through a grate, pipes, or just a hole dug through the earth and strengthened with wood.
Determine what your latitude calls for -- if building the cellar in the southern United States, ensure that it is fully in the ground as it can get too warm if built into a hill, whereas in the North, the cellar can simply be built into a hill.
Figure out how large you desire your cellar to be. The larger it is, the more unstable it can become over time.
Dig the cellar in your chosen site, but away from any areas where water accrues, as this can erode and damage it. Support the structure as you desire, whether with wood supports or cinder blocks.
Place a fast-growing and insulation-forming ground plant that will hold the soil around the cellar. This is generally a low-lying vine such as mint or fast-growing wildflowers.