Cellar doors, also known as bulkhead doors, provide external access to basements or cellars. Typically angled and found at the side or back of a house, they allow bulky items to be moved in or out without navigating internal stairs. These doors also serve as emergency exits. Constructed from durable materials like steel, wood, or fiberglass, they are designed to withstand the elements and maintain home security. Some models are designed to improve insulation and energy efficiency. Bulkhead doors often open upward, often hinged at the top or side, and may have a sloping shape to shed rain and snow.

Cellar doors or bulkhead doors have been around for centuries, providing access to subterranean storage areas. Originally made of wood, these doors protected cellars storing food, wine, or coal. In the 19th century, metal doors became popular for their durability. Modern advancements brought more resilient materials, such as fiberglass and steel, along with improved design for insulation and security, reflecting the evolving needs and technology of home construction.

Cellar doors, leading to basements or underground spaces, are seeing modern upgrades. Rust-resistant materials, like galvanized steel or aluminum, offer longevity while looking sleek. Some homeowners are choosing designs that blend seamlessly with their yard or deck, making them less noticeable. Insulation and sealing improvements ensure better protection against weather and pests. Automation, too, is on the rise, allowing easy lifting at a button's push. As homes seek to optimize every space, upgraded cellar doors will ensure safety, convenience, and aesthetics.