Barnwell Industries, Inc., through its subsidiaries, engages in the oil and natural gas exploration, land investment, real estate, and contract drilling operations in the United States and Canada. The company's Oil and Natural Gas segment engages in the acquisition, exploration, development, production, and sale of oil and natural gas properties in Canada. It primarily holds interest in the Dunvegan unit that comprises 220 producing natural gas wells located in the Dunvegan area of Alberta, Canada. The company's Land Investment segment invests in land interests in Hawaii. The company's Contract Drilling segment drills water, water monitoring and geothermal wells; installs and repairs water pumping systems; and distributes floway pumps and equipment in Hawaii. Its Residential Real Estate segment constructs and sells luxury single-family homes in Hawaii. Barnwell Industries, Inc. was founded in 1956 and is headquartered in Honolulu, Hawaii.