House extensions in Auckland

House Extensions

If you need more space but don’t want to move, JDC Builders will bring your extension plans to life.


JDC Builders will help transform your home to fit your lifestyle.

Renovation Specialists


Decking construction

Decking construction


Project Management

Project Management


Add an extension to your home



We’ll work with you to make your house extension a seamless addition to your home.

Take advantage of our expertise by leaving us to project manage your house extension. We'll ensure the project runs efficiently and to schedule. Whether it's adding a bedroom, ensuite and walk-in wardrobe or living area, right through to building a second storey, we'll help make your dreams a reality! See our top house extension tips.

We’ll coordinate the tradespeople and make certain all work is completed to our high standards.



JDC is our go to builder! They have undertaken four projects for us. Reliable, professional with an eye for detail. They take pride in their work and are easy to get along with, providing solutions and ideas to get the job done.

Michelle Clayton