Previously on our home ownership series The Weekend looked at the sometimes overwhelming and costly aspect of getting building consents and codes of compliances. Now we go right back to the drawing board and focus on extending, or even building a house. Lynn Freeman is joined by CEO of the Master Builders Association David Kelly, Wellington builder Martin Goulden, Nicky Chapman - who built her Pauatahanui lifestyle block from scratch, and Roy Wilson who is the principal architect at Warren and Mahoney.