eco dome

built from local earth-filled Superadobe coils (soil-cement or lime-stabilized earth).
1 Tree free.
2 Maximum use of space through alternative options.
The main dome and four niches, depending on local code approval, can function as:
a) main living room, entrance hall, kitchen, bathroom, bedroom (called "bed-womb" because of it's small, organic form!)
b) living room, entrance hall, and three bed-rooms.
c) living room, entrance hall, two bedrooms, and a bathroom.
3 Self-contained single unit (potential for a guest house or studio apartment) or double unit (larger family residence).
4 Can be repeated and joined together to form larger homes and courtyard houses.
5 Can be built by a team of 3-5 persons.
6 Designed with the sun, shade and wind in mind for passive cooling and heating.
7 Wind-scoop can be combined with a rated furnace unit, depending on local code approval. Solar energy and radiant heating may be incorporated.
8 Interior furniture can be built-in with same material.

http://www.calearth.org/