Welcome to Green & Build

Never before has environmentally friendly and sustainability been such a core element of our everyday lives and this has translated into the construction industry. This section was designed to gather all the construction information you may need as a homeowner or professional. Access Building Regulations and guidelines easily and quickly. Use our cost calculators to estimate the cost of a new build or renovation. Find details on retrofitting your home and building a passive house and find out more about what grants are available to help you along the way.

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Access information that will expand your knowledge on NZEBs (Nearly Zero Energy Buildings)


Building an energy efficient home can be tricky so we have built a resource that gives you access to all the technical construction details you may need.


To plan a retrofit you must understand what it is and the benefits. Access the information that you need to improve your home here.


Housebuild has a wonderful community of professionals from Building Designers and Engineers to BER Assessors and Architects. They will work with you to achieve a beautiful home along with a high energy rating.


Calculate the costs of your passive house or retrofit and discover what grants are available to help finance the project.