Located in the Hills District, our team will work hard to create the home you want – on projects large and small. From extensions and granny flats to new builds, we have the expertise you need.

  • Custom New Home TG Building Services


    We work closely with our clients throughout the building process to ensure a stress-free build. We partner with our clients, bringing our expertise to create the level of quality you expect from our small and enthusiastic business.

  • Granny Flats TG Building Services


    With demand rising for multi-generational housing and rental accommodation, we can help you realise the potential of your largest investment. Our expertise will help you create the space you need – whether it’s for your adult children, your ageing parents, or even for an AirBnb income-producing asset.

  • Renovations & Extensions TG Building Services


    With many families choosing to stay with their existing home and simply maximising the available space, our renovation and extension business is growing fast. Our years of experience working with local authorities ensure that the approval process is smooth and trouble-free.


We share all the news and views on the ground via our Instagram feed. Regular updates and site visits show some of our great building work now underway in the Hills District and surrounds.


Specialising in new homes, renovations and granny flats in the Hills District, TG Building is the partner you need for your building project. Proudly locally owned and run, we pride ourselves on personal service and attention to detail.


    We believe in quality work. No job is too small and we like to give our customers the highest levels of quality in everything we do, from the approval process right through to walking through your renovated home or granny flat.


    As a local small building company, we have developed a reputation for integrity and the personal touch – just the qualities you need in your builder. The builder you meet at your first meeting will be with you the whole journey – so we can make sure you get the home you want.


    As long-time residents of the Hills District, we understand the needs of local residents and can be responsive to customer demands – being just a short drive away. We love the area we work in and have experience with working with local authorities.


  • “Excellent work. Great ideas. Tony took the pressure off me in all aspects of the build. Very easy to deal with. Finished ahead of schedule & on budget. Happy to show the granny flat to anyone who is interested. Would highly recommend this company. I will definitely use again for all building works.”

    Sharon - Windsor
  • “Tony was very reliable and professional. His workmanship was great and completed the job on time. He kept us up to date on progression and gave useful suggestions on our renovation. We would definitely call on him again when we have other renovation jobs to do.”

  • “I strongly recommend Tony and his team. He has just finished our renovations and we couldn't be happier. His work is top notch, he was very organised, and he is full of practical advice. And a special mention regarding variations - we decided to make some small variations during the renovation, and Tony's pricing was very fair and reasonable. Again I strongly recommend TG Building and Carpentry.”

  • “I rang Tony for a quote to remove a wall and some cornice repairs. Once the quote was approved within a few days he started work and kept me updated on the progression. Dealing with Tony was easy and his work was outstanding. Very pleased with the final outcome. Thank you for a job well done. I recommend Tony for any building related work.”

    Mario – Baulkham Hills
TG Building Ebook

7 Things You Must Know Before Building, Extending or Renovating Your Home

Our simple guidelines will give you background on all you need to know about Granny Flats so you can make the right decisions and have a stress-free build. Enter your details below to receive your free copy.