We accept nothing less than the highest quality outcomes for our clients.


Our caring and helpful team share a great dynamic between them, ensuring an enjoyable experience for our clients.


We will always do what is right by our clients with an honest and open approach.


We always keep our appointments and honour our commitments.


We are general builders who specialise in extensions and renovations to existing homes. We also build quality custom homes and are award winning commercial builders.

With our experience completing significant projects on Ayers House, the Elder Park Rotunda and Government House among others, we understand the importance of bringing heritage quality outcomes and attention to detail to every project.

We promise to always do what is right by our clients and will never cut a corner to save a dollar. Work, Health and Safety, Quality Control and Environmental impact are also important considerations on everything we do.

If G-Force sounds like the right company for you, contact one of our awesome team today or refer to our ABOUT US page for more detailed information.




“I would like to extend my sincere thanks to the team and yourself for a wonderful renovation experience. It was such a reassuring feeling to know that my home was in good hands. All the trades-gentlemen were polite, approachable and efficient. They were never intrusive, and always ready to answer questions about the process. I can’t speak highly enough of Phil. He has a calm reassuring presence, and he responded immediately whenever I called, or asked for help. It’s great to have somebody who oversees the renovation. You feel you can go away from the home, and return to find things have moved along smoothly without you. Thank YOU, so much Kellie, for your kindness and enthusiasm. You were the face of the company for me, and the initial contact, it’s fair to say you were the reason I chose G-Force to do this renovation. All potential difficulties were made smoother, all questions were answered, and finally, I was so happy to show you the end result at your final visit! This house may be small, but now it feels like a palace to me. Bless you all xxxx

Marie from Glenelg

“I can’t recommend G-Force enough!!! They have been extremely professional from start. From helping with ideas and designs for our renovation. Keeping up great communication through out the construction stage so we knew when everything was happening. All the staff in the office and the tradie’s on site have been a pleasure to deal with. Plus the quality of the work is second to none. All in all making our renovation an exciting and pleasurable experience. Thanks again to all the gang at G-Force!!!

Craig of Dernancourt

“As the last details of the Law Building project are concluded I just wished to note to you the very helpful & open working relationship that James and Colin brought to the task. It has been good (and productive) to have a working relationship which was flexible, open and frank at all times with our main contractor, and their customer service to me as project manager and to the occupants of the very busy building has been a crucial factor all the way through. I know they have put a lot into the job. Colin’s reputation as a good and conscientious operator quietly preceded him through the grapevine, and James has cemented his own reputation through the process. I believe you would get a similar comment from the occupants of the Law Building. G-Force clearly have an understanding and a feeling for heritage building renovation.”

Darwin from University of South Australia

“If I could be so bold and say whatever you are paying your team members it is not enough…you have put together a very remarkable group of people doing such a great job”.

Lee of Athelstone

“Fantastic Job! I love the Kitchen. Ryan and Colin were the tidiest tradesmen I have seen. Great Job. I will recommend G-Force to all my friends”.

Kate of Prospect

“I’m converting an old stone cottage from a restaurant to a residence and turned to G-Force for help. Everything they’ve done has been exceptional. Professional, quality work and perfect customer service. Very happy and definitely recommend them.”

Geoff of Clarendon

“Highly satisfied with the quality of the work and concept design with good results! Kept the client informed and happy so that’s good management for council. Many Thanks”

Brian from City of West Torrens

“Fantastic management and site supervision, quick to resolve issues, end user liaison has been exceptional with all clubs very pleased with level of service”.

Jarred from City of Salisbury

“Overall a job well done under sometimes difficult circumstances. I look forward to dealing with James and Colin on future projects. The University are very pleased with the end result”.

Tony of Contour Management

“Very happy with Colin, Kellie and the team. Tradies were all easy get along with, cheerful and constructive and considerate as they worked around us. Impressed with rate of progress during the build”.

David and Lindy of Hallett Cove

“Excellent service and attention to detail. Regular visits and communication by Project Manager. Quality workmanship at competitive cost. Keep up the great work”.

Grant from Renewal SA

“G-Force were professional and customer focused ensuring we were very happy with the end project. When issues arose, as expected when renovating an old house, they worked with us to create the best outcome”.

Chris and Jayne of Henley Beach




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