Your ideal house is likely to remain only a dream if it is not cost-effective effective and reasonably easy to maintain.
Cost can be held down by building with locally-available materials and labor-saving methods. In determining cost effectiveness, remember that you can save money in the long term with a more expensive, longer-lasting system that reduces operating costs and maintenance.
Also consider the future marketability of your ideal home, even if you plan to live there forever. Home value is determined more by marketability than the cost to build or rebuild.
The LSU AgCenter and the LSU College of Agriculture