Adult Bunk Beds

An adult bunk bed brings two sleeping surfaces into one room, with Twin, Twin XL, Full, Full XL and Queen configurations available across the range. Start with the mattress width and length each sleeper needs, then compare access, the complete assembled footprint and the limits for each bunk.

Compare actual configurations

These examples show how mattress size and access change the space a bed needs. Dimensions are in inches, in width × length × height order. The limits shown are the current product-listed limits for each bunk.

The Bellamy with stairs is 15¾ inches longer than the Bellamy with its end ladder attached. At the listed 66-inch width, that is about 7.2 additional square feet of rectangular footprint. Neither figure includes open drawers, an extended trundle or the walking space around the bed.

Match the mattress to the selected bed

Compare mattress width and length together. Twin and Twin XL are typically 38 inches wide, while Full and Full XL are 54 inches wide. In each pair, the standard length is 75 inches and the XL length is 80 inches. Queen is typically 60 × 80 inches, giving you more width at the same length as the XL sizes. King is typically 76 × 80 inches; California King is 72 × 84 inches, making it 4 inches narrower and 4 inches longer than King. Check the selected layout and mattress requirements rather than relying on an abbreviated product name: the Brockton example above takes Twin XL on top, even though its title says “Twin over Queen.”

Use the specified mattress thickness as well as its width and length. Both Bellamy examples recommend no more than 8 inches on top. On the bottom, the recommendation changes with the rail setting: no more than 8 inches with the high rail, or 12 inches with the low rail. Underbed drawers and trundles require the high rail setting.

Plan access and usable room space

Mark the complete bed and its ladder or stairs on your floor plan. Add the space needed to pull out any drawers or trundle fully, then check doors, closets and the route to the bed. A staircase at the end and an angled ladder at the side can affect different parts of the room.

For headroom above the top mattress, subtract the mattress-support height and your intended mattress thickness from the ceiling height at the bed. Overall bed height and a rail-to-rail gap are different measurements. Ask the team for the support height or a model drawing if it is not listed, and check nearby fans, beams and lights.

For an optional sleeping surface, see how a trundle works with a bunk bed. For the route into the room, use our furniture delivery preparation guide.

Read the limit for each sleeping surface

Compare the top and bottom bunk separately. Do not add the two limits together. Follow the model’s assembly, guardrail, mattress and use instructions.

Keep the access route clear and use the supplied ladder or stairs as instructed.

Choose for the room you have and future use

A guest room, shared bedroom or vacation home can call for different mattress sizes, access and storage. Drawers can hold bedding; a compatible trundle can provide another sleeping surface when there is room to open it. On models that separate into individual beds, that option can be useful if the room’s needs change. Confirm conversion and accessory compatibility for the exact model.

Customers do choose our beds for vacation rentals. Totally Home Furniture’s products are not warrantied for commercial use, including vacation rentals; consider the model’s construction, operating limits and care needs alongside that coverage limitation.

Questions before you choose

Can adults use the upper bunk?

Choose a model whose stated limits and instructions suit the sleeper, mattress and intended use.

Does a Queen bunk take only the space of a Queen mattress?

No. The posts, rails and access add to the mattress dimensions. Compare the complete bed dimensions and leave room for drawers, a trundle and access around the bed.

Can we add storage or a trundle later?

Only when the accessory is compatible with that model, size and rail setting. Confirm the required clearance, mattress size and thickness before choosing a trundle.

Need help narrowing the options? Send Totally Home your room dimensions, ceiling height, preferred mattress sizes and access needs. Contact the team or call (800) 976-0102 so we can help check the selected configuration.