The Haven 1 Bedroom 366 sq. ft. Tiny Home DIY Steel Frame Building Kit, ADU, Cabin, Guest house, Backyard rental

Engineering Plans

Do you need the engineering plans to get finance approval? Contact us today so we can help you get the engineering plans you need.

The Haven by Plus 1® Home Kits, perfect as a bachelor or spinster pad, is designed for comfortable and affordable living. The Steel frame structure, which you are purchasing only, does not come with doors, windows, electrical, plumbing and finishes, it has allowances in the steel frame structure design for all elements required, including Provisions for, in the 366 sq ft space spans out to accommodate a large bathroom and laundry area, an open kitchen and dining area with a high ceiling to let in ample fresh air and light, and finally, a living area that can alternate between a bedroom and a lounge.
The Haven is to be constructed on a concrete foundation, * takes about 1 to 3 days to construct the building skeleton). with upgrade options available.

Offering adaptability, strength, and durability, our steel frame home kit is efficient and requires minimum experience or tools to help build your dream home. A flooring systems and deck options are available or even add a loft, for this model to ensure you get your desired thermal, acoustic, outdoor-lounge properties and extra room. This compact home-kit works great as a Backyard rental, ADU, home office, business space, or for any other small-scale purpose. Take a look at our Photo ideas and Floor plans.

Environmentally Friendly and Sustainable: Ensuring your investment lasts for generations, the PLuS1® DIY home steel kit provides maximum strength and durability. Steel frame buildings are not affected by termites, mold, rodents, and bugs, they are also fire resistant and less prone to damage your home. Steel is also recyclable, making it the pioneer of environment-friendly projects.

Durable & High-Quality Steel: All our steel frames are manufactured using pure G90 galvanized USA steel with a 50-year warranty. This allows steel to be corrosion resistant, it does not rot, buckle, divide, or splinter over time remaining true and straight. Our steel frame house kits are built to adapt to various house challenges, features like thicker walls to improve insulation and extra engineering to make it resilient to extreme weather conditions.

Cost and Time Efficient: Our home steel kits are delivered free to any location in the mainland of the USA. With pre-assembled steel panels, from, walls, ceiling & the roof, including detailed step-by-step instructions, easy to construct, saving 70% of your time/labor costs.

Building Codes and Zone Requirements: PLuS1® home kits are architecturally designed and approved by a professional engineer to comply with your location’s building codes and zoning requirements, as an extra bonus, all our steel frame kits are engineered to withstand harsh climates, including the ones affected by cyclones and hurricanes at no extra cost.

Personalization: Our PLuS1® kits consist of only the steel frame structure (shell) and the necessary components to assemble them. Which gives you the ability to design and finish home in a completely unique way: select windows, doors, plumbing, electrical and other hardware to match your spatial needs, budget, and personal style.

Take-off List Provided: Due to variations in personal styles, the materials list we provide you will be generic. Allowing you in working out the cost of finishing your home, Easy as , take the generic “materials/ take-off” list to your Local Home Depot store and their helpful customer service team will price it for you based on your location and personal requirements.

Included in Your Purchase: When you purchase a PLuS1® home steel kit, it’s inclusive of the delivery at your location, with a stamped certificate by a professional engineer, architectural structural plans and calculations that meet your location’s building codes, with the calculations , includes the house load bearings, which will give assistance for your foundation requirements, for your engineer , who is taking care of your foundation needs .You will also receive , the pre-assembled numbered panels and the brackets/fittings along with assembling instructions to help you construct your structure. Please note that any permits required for your home are not included in your purchase.

We also supply preliminary plans, on request, you can show to your local building authorities to get approval for the home before you purchase our PLuS1® home kit. After you purchase, our engineer will prepare, the structural engineering plans and calculations for your home, and production, to meet all the building code requirements for your location, before your Steel frame structure is delivered

Other Features Available: The design and model in the display showcase a concrete slab foundation. However, PLuS1® home kits offer several other options ranging from flooring systems to deck/porch variations, crawl space, and basement-type foundations with engineer assistance and manufacturing for stilts. Please read the FAQs for more information.


Product Depth (in.) - 156 in
Product Height (in.) - 198 in
Product Width (in.) - 376.8 in


Hardware Included: Yes, Steel frame structure
Pre-cut: Yes, Panelized frames
Returnable: 60 days
Wood pieces included: No
Delivery: Yes, included to your location

Warranty / Certifications

50 year warranty icon
Manufacturer Warranty: Yes, 50 years
Architectural Plans and Engineering Cerfications: Yes
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