If you'd like a stylish, affordable, super energy-efficient home built on your own block of land, you can purchase plans of the 3 bedroom SOLARHOME 140 for only $2,100 (AUD).  The house is suitable for level or sloping sites with a minimum site size of around 430m².   The fully detailed drawings by an accredited building designer are so complete that they can be submitted to council as is for approval (after adding your site plan) and given to local builders for accurate quotes.  The drawings come with full technical support.  The build cost will be between $200,000 and $350,000 in most parts of Australia, depending on site conditions and materials, finishes, and fixtures selected.  An off-grid solar/battery system would cost about an additional $50,000.  Scroll down to see the complete set of drawings.

Ecoventure Pty Ltd (Australian Company Number 002169842)  trading as The SOLARHOME Project,  24 Pars Rd Greens Beach Tasmania 7270  Australia