House Extensions Structural Design
Home extensions commonly involve expanding the front, rear, or side of a dwelling to create additional living space. SNG Engineers provides structural design and documentation for extensions of all sizes — from a single-room addition to large-scale rear or upper-level extensions.
Our services typically include footing, slab, and framing design to suit the existing structure and site conditions, ensuring the extension integrates seamlessly with the original building.
Extension Structural Design Services
Small & Single-Room Extensions
Footing, slab, and framing design sized to suit a targeted addition — connecting cleanly into the existing structure without over-engineering the job.
Large-Scale & Whole-of-House Extensions
Full structural design for larger rear, side, or upper-level extensions, including assessment of the existing structure's capacity to tie into the new work.
Additional Storeys
Adding a new level to an existing home requires careful assessment of the current structure and foundations. We analyse the capacity of existing footings and provide engineering solutions such as lightweight construction or foundation strengthening where required.