We will always include the cost of the Domestic Building Insurance as part of your quote, which is mandatory for all builders to supply if the value of work is above $16,000.00. “Domestic building work more than $16,000 (previously $12,000) will require domestic building insurance and will cover costs up to $300,000 (previously $200,000) to fix structural defects for six years, and non-structural defects for two years from 1 July 2014.”