About us

About Us

GJ Building and Contracting Pty Ltd (“GJ”) is an Australian owned and operated building company with headquarters at Sydney Olympic Park.

Our history has been one of advancement and diversification. 

It begins in 1985, where the founder of GJ, Raymond Boumoussa, established what was one of Sydney’s largest formwork companies with over 200+ employees delivering over 1,500 apartments annually working closely with Tier 1 and Tier 2 companies such as Multiplex, Baulderstone, Hornibrook, Bovis Lend Lease, Westfield Design and Construct, Hansen and Yuncken, Built, Mirvac, Southern Cross and more.

GJ was formed in 2013 drawing together many decades of professional building experience from the senior management team who have been involved in numerous projects across Australia and abroad. 

To date, we have grown steadily into a respectable managing contractor with a quality portfolio of residential projects across Sydney. 

Quality, Safety and Environment underpins the company's main focus as we pursue our vision to be a leading NSW residential apartment builder by 2023 marking our tenth year of operation. 

We are committed to building quality, cost effective and sustainable buildings, safely and on time for our clients.