Exterior, Prefab Building Type, Concrete Siding Material, and Flat RoofLine <span style="font-family: Theinhardt, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Roboto, Oxygen-Sans, Ubuntu, Cantarell, &quot;Helvetica Neue&quot;, sans-serif;">Mexico-based architecture office S-AR created Casa Caja, a low-cost concrete block house that's designed to be built by its owners, with support from a non-profit social housing project. "The subject of the non-profit organization is to make the benefits of architecture available for those that can't pay for it with money, but can work or construct their own houses or buildings,  Photo 65 of 66 in The Ultimate Guide to Prefab: 65 Resources by Location, Construction, and Price from 7 Affordable Prefab Homes and Other Alternative, Inexpensive Home Options

The Ultimate Guide to Prefab: 65 Resources by Location, Construction, and Price

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Mexico-based architecture office S-AR created Casa Caja with support from a nonprofit social housing project. The low-cost concrete-block house is designed to be built by its owners.