Our models are designed to be constructed on a concrete slab with no deck option. The deck and flooring system is an upgrade. You must download the Preliminary plans from the Additional Resources on The Home Depot website and take them to your local authority for approval. Any corrections required need to be emailed to us before completing the purchase. We can then customize their requirements to your Prefab home. We can be available if you require assistance with pre-construction services for your project, permits, etc. Modification of plans can be available with our architects/designers. Should you decide you, want to modify the plans to suit a new look, change door openings, add a new wall or simply have an idea you would like to apply to your build. We can assist as long as it is in the size of the structure. Modifications may be done at an additional cost. Contact us to discuss building options. Sustainable and environmentally friendly, We ensure your investment will last for generations. Our ADU Prefab Steel Kits provide maximum strength and durability. Steel frame buildings are not affected by termites, mold, rodents or bugs and stand up to the elements in the test of time. They are fire-resistant and recyclable, making them the epitome of environment-friendly projects.