I have seen these around, they are sort of similar to shot-gun style houses, which I have toyed with as an option. This model is 308 square feet and can be built very quickly. They were used in Katrina to rebuild or simply start from scratch, some neighborhoods. I like the simplicity of it and yet they are very attractive looking. Here is what Lowe’s has to say about them:
Originally designed as a dignified alternative to the FEMA trailer, the Katrina Cottage has evolved into a nationwide sensation that is finding popularity as affordable housing, guesthouses, resorts and camps. Marianne Cusato and a team of designer have partnered with Lowe’s to bring the Katrina Cottages to market at plans and material packages. Cottages in the Lowe’s series range from 308 ft. up to 1800 sq. ft. Several of the cottages have grow options that allow the smaller cottages to be expanded over time.
The construction time of a Katrina Cottage is dependant on the style and type of cottage being built. A cottage can be done in as little as 6 weeks, but variables, such as weather, may come into play. Always talk with your contractor when working out build timelines.
check it out here