Residential Extensions Engineering Christchurch

Planning a residential extension in Christchurch is about more than just extra space—it is about structural compatibility. Adding a new wing, a second storey, or extending a living area requires precise engineering to ensure the new structure integrates safely with the existing building. At Landmark Consultants, we specialise in the structural design of home additions.

Connecting new to old is technically challenging. We calculate the required bracing to handle increased wind and seismic loads. We assess your existing foundations to ensure they can support the added weight. Whether it is removing load-bearing walls to create open-plan flow or designing steel portals for wide-span glazing, our engineers provide the calculations needed for Building Consent.

We work with your architect to preserve the aesthetic of your home while ensuring structural resilience. We understand the nuances of Christchurch's soil types (TC2/TC3) and design foundation connections that mitigate differential settlement between the old and new parts of your house.

Don't risk your biggest asset with guesswork. Our team provides the detailed structural documentation builders need to get the job done right, on time, and without inspection delays.