About GDA Building

With over 20yrs experience...

GDA Building Services strive to maintain a highly respected reputation due to proven performance, quality of service and superior ethical business practices. 

Owner, Grant Allen is a fully licensed Master Builder and is on site for the duration of the project ensuring the highest quality of workmanship. 

Our highly skilled and dedicated team of tradesmen develop quality projects uniquely suited to each and every client.

Specialising in Building New Homes, Additions & Renovations

GDA Building Services is located in Sydney’s Northern Beaches.  GDA specialises in new homes, first floor additions, all aspects of renovations and alterations for single and double storey homes.

GDA Building Services is fully licensed, insured and a full member of the Master Builders Association and The Housing Industry Association.

In dealing with us, you have the benefit of dealing with an experienced, professional and motivated team who’s committed attention to detail is of the highest standard. 

home extension renovation

Renovations & Extensions

If you love your location but are looking for more space to accommodate your changing needs, upsizing your home with an extension or first floor addition offers an affordable and appealing alternative to moving.

By increasing the size of your living space you will be adding real value to your property as well as making your home more desirable and comfortable.

I have had the pleasure of knowing Grant Allen and his company for many years. Over that time I have engaged his company on two large renovations and in each case he delivered a quality result, within scope and on budget. I commend his team for their professional attitude, expert craftsmanship and all round attention to detail. It was a pleasure to work with him and his team and I would personally recommend him to any prospective builder or renovator