Bunk Box Tiny House Plans


Industrial Chic Meets Natural Warmth

The Bunk Box is a unique modern tiny house design that leaves the wall framing and electrical exposed on the interior. This stylish detail has a great benefit to the homeowner: rather than covering the framing with drywall or wood paneling, they can use – and feel – an extra seven inches of width stretch out all the way to the exterior sheathing. Space is precious in a tiny home, so why let conventional construction methods hide what you could be using?

Built on a 16 foot trailer, the Bunk Box is 125 square feet on the main floor, with an additional 72 square feet in the sleeping loft.  Tall people rejoice! A flat roof and exposed roof framing mean extra head height in the loft: three feet, nine inches allow free movement throughout the loft without bonking your forehead. Two large skylights connect residents with sunny days and starry nights. An optional, second door (as shown) and six windows also open the house to sunlight, great views and fresh air.

Shelter Wise used their signature attention to energy efficiency and their years of tiny house construction experience on this special design. The construction details page in this plan set is extensive. Since the insulation is not inside the framing, the house is wrapped in 2″ of closed cell foam to eliminate almost all of the thermal breaks and outperform conventional insulation packages.  Even the floor assembly is thermally separated from the steel trailer, which all too often means cold feet in the winter, even when insulated in the standard fashion. Like a well-insulated thermos, this design keeps your warm spaces warm and cool spaces cool.

The house as shown is sided with burnt wood cedar siding, also known as shou sugi ban, but any siding can be used. This exposed, modern tiny house design means that the materials themselves, inside and out, give the house its signature style. That offers tremendous potential to the do-it-yourselfer to create a look and feel that’s uniquely their own.

The Bunk Box is a great house for an individual, and couples or families could easily revise the design into a 20, 24 or 28 foot house with some added care around window and door placement. Whether it’s a guest room, bunk house, office or full-time tiny home, the Bunk Box is like no other tiny house out there.



What the Plans Include

  • Plans for a modern tiny house design that is 16’-8” long,  8.5′ feet wide, and 13’-6” tall, including a 1’-10.5” tall trailer. Note: the trailer is 16 feet long, and the extra eight inches of length come from the exterior foam.
  • Detailed interior and exterior elevation drawings for all sides
  • Trailer connection details
  • Wall framing elevations
  • Roof framing plans
  • Cross sections of wall, roof and floor
  • Details for corners, windows, the door
  • Suggested materials list for siding and framing
  • Product details on the sink, shower, tankless water heater, bath fan, and composting toilet used in the photos shown.
  • A basic electrical plan
  • A thoroughly energy efficient design. These plans include details for a unique, full R7 thermally broken floor assembly that could effectively host radiant floor heat (most floors would lose radiant heat warmth through contact with the metal trailer), but please note that radiant heat floor products or installation instructions are not a part of these plans.

These plans do not include plumbing diagrams or exterior finish materials.  The plans do not include instructions on how to assemble the stainless steel custom bent shower. The shower dimensions are listed. Shelter Wise hired a local metal fabricator to execute the shower and would suggest you do the same to achieve the same look. These plans are a license to build ONE house, and contain all of the essential nuts and bolts to get you a solid, extremely energy-efficient tiny home that is completely customizable to your tastes.

Weight and Trailer Considerations

When choosing a trailer for this house, Shelter Wise recommends 5,000 lb axles each, for a 10,000 lb total carrying capacity. Iron Eagle Trailers builds our favorite tiny house trailers out there, and Derin from Shelter Wise and Dee from PAD even helped them design their trailers to be perfect for tiny homes.  Tell them PAD sent you, and you’ll get $50 off your order.

Build Smart!

With all of our plans, we recommend a copy of Go House Go, our how-to manual for building a tiny house on wheels. It’s the book Dee wished existed when she built her little house, and she wrote it to save everybody else all the time and trouble that she went through to figure out how to build smart and safe.

Returns and Conditions of Sale

Please note that all sales are final on digital products and returns are not available. Because, let’s be honest, there’s really no such thing as “returning” a digital product. We offer quality products at a great price, and we think you’ll be happy with them. If you have specific questions or concerns about a product before purchasing, just contact us and we’ll do our best to answer so you know exactly what you’re getting. View the Terms and Conditions tab for the complete terms and conditions of this plan set.


Terms and Conditions for Shelter Wise and Portland Alternative Dwellings Tiny House Plans

By purchasing these plans, you understand and agree to the following:

This design and plan is intended only for competent and knowledgeable builders. These plans assume general knowledge and skills, including but not limited to roofing, electrical, plumbing, and framing. These plans have not been approved by an architect or an engineer. If you are not an experienced builder, we recommend consulting with a licensed contractor prior to attempting to build a house from these plans. Contact your local building code officials to ensure you comply with local codes.

Any person or entity (hereinafter, “Builder”) engaging in the construction of a tiny house using the design of Shelter Wise, LLC or Portland Alternative Dwellings, LLC assumes the entire responsibility and liability for and agrees to hold Shelter Wise, LLC and Portland Alternative Dwellings, LLC harmless from any and all damage or injury of any kind or nature whatsoever to all persons, whether employees of Builder or otherwise, and to all property (including loss of use of such property) caused by, resulting from, arising out of, or occurring in connection with construction related to or based upon the construction design, plan, instructions, or other communication.



All text and designs (“plan material”) in Shelter Wise, LLC’s or Portland Alternative Dwellings, LLC’s  publications are copyright protected. Such material is intended to be used by individuals to construct a single tiny house. To build more than one house from this set of plans, you must purchase a new plan set for each subsequent home built.

If you are a professional tiny house builder, please contact us to inquire about Builder’s Volume Licensing for this tiny house plan set.

Intellectual Property

Shelter Wise and Portland Alternative Dwellings retain all rights to the intellectual property of the plan material. No rights in the intellectual property are transferred to the purchaser. Purchaser shall not remove any copyright or proprietary notices in or on the plan material.


Shelter Wise’s and Portland Alternative Dwellings’ designs are copyrighted. Any media coverage containing photos, plans, depictions, in-process projects or finished homes shared on social media, print, news, blogs, broadcast, etc, shall be expressly credited to Shelter Wise as the design source for each and every use or reproduction. Examples of proper credit include but are not limited to: including Shelter Wise and the name of the house, crediting www.http://shelterwisellc.com, #shelterwise, etc.


The reproduction, distribution, sale, or any other transfer of the plan to any third party is prohibited, except that up to 2 copies may be made and distributed to contractors working on the construction of your tiny house. All copies made for such purpose must be destroyed at completion of construction.


All sales of digital products are final and returns are not available.

Commercial Use

The use of the plan for any commercial purpose is strictly prohibited. Commercial use includes, but is not limited to, construction of more than one tiny house per plan purchased, re-sale of more than one tiny house, the renting of two or more tiny houses per plan purchased, or the reselling of plan materials in whole or in part.


Shelter Wise, LLC or Portland Alternative Dwellings, LLC retains ownership of the intellectual property of the plan materials regardless of any customization, modification or alteration of the plan by a purchaser or builder.

Governing Law

Any matters arising out of or related to the plan materials shall be governed by Oregon law.

Bunk Box Tiny House Plans