---
title: Merchant House at 333 Kent Street – Australia
url: "https://www.systra.com/en/projects/merchant-house-at-333-kent-street-australia/"
type: projects
date_published: 2026-10-14
date_modified: 2026-10-14
schema:
  @type: WebPage
language: en-US
word_count: 385
reading_time: 2 min
canonical: "https://www.systra.com/en/projects/merchant-house-at-333-kent-street-australia/"
featured_image: "https://www.systra.com/wp-content/uploads/2026/10/merchant-house-at-333-kent-street-3.jpg"
project-market:
  - Buildings
  - Adaptive Re-Use
  - Commercial and Mixed-use
project-service:
  - Design
project-location:
  - Australia
---

# Merchant House at 333 Kent Street – Australia

![Merchant House at 333 Kent Street – Australia](https://www.systra.com/wp-content/uploads/2026/10/merchant-house-at-333-kent-street-3.jpg)

**BG&E, now part of SYSTRA, delivered structural, construction and materials engineering services for the redevelopment of Merchant House at 333 Kent Street, transforming a nine-storey 1980s commercial building in Sydney’s CBD into a 16-storey A-Grade office tower. The project added seven storeys while retaining and restoring the heritage façade, and delivered 14,173 sq m of net lettable area.**

## 󠀁**Structural assessment and materials investigation**󠁿 

The $400 million redevelopment required extensive in-situ testing of the
existing concrete walls and slabs, together with detailed investigation and
analysis of the building’s concrete properties. This work informed decisions on
the retention and strengthening of the original structural elements.

A key challenge was upgrading the existing structure to meet current design
codes. BG&E developed performance solutions to achieve compliance while
preserving as much of the existing building as possible. The site’s history
dates back to 1888, with its heritage façade retained and restored as part of
the redevelopment.

## 󠀁**Extending and strengthening an existing structure**󠁿

More than 90% of the existing structure was reused. The building was
strengthened from the foundations to the roof and extended upwards by seven
storeys, with works including an expanded core and new lift shafts.

Reusing the existing structure delivered significant environmental benefits,
with an estimated 60% reduction in embodied carbon during construction and a 50%
reduction in operational carbon compared with a new build. The redevelopment
targeted a 5 Star NABERS Energy rating and a 5 Star Green Star As-Built rating
upon completion.

## RECOGNITION

Merchant House received the **2025 MBA Excellence in Construction Award**
**for Best Commercial Building**.

## Snapshots from Merchant House

Some examples of projects in Buildings, Adaptive Re-Use, Commercial and
Mixed-use, Design

[  Western Australia Museum Boola Bardip – Australia ](https://www.systra.com/en/projects/western-australia-museum-boola-bardip-australia/)
[  Rosebery Engine Yards – Australia ](https://www.systra.com/en/projects/rosebery-engine-yards-australia/)
[  Blue at Lavender Bay – Australia ](https://www.systra.com/en/projects/blue-at-lavender-bay-australia/)
[  Quay Quarter Tower – Australia ](https://www.systra.com/en/projects/quay-quarter-tower-australia/)
[  Villemur-sur-Tarn School Complex – France  ](https://www.systra.com/en/projects/villemur-sur-tarn-school-complex-france/)
[  Taranto station multimodal interchange -Italy ](https://www.systra.com/en/projects/taranto-station-multimodal-interchange-italy/)

[ See a selection of SYSTRA's projects ](https://www.systra.com/en/our-projects/)