About Us


Since the foundation, Quadrio Building Services has been offering professional and innovative home building solutions. With the combined experience and expertise of more than 50 yrs, we can solve all issues concerning your home from renovating your bathroom or kitchen to extending your home. Over the years, we have built an enviable reputation for reliability and project professionalism which is why our clients regard us as a trusted home renovation and extension specialist in North West Sydney.
We have a team of handpicked employees who share the same passion for providing service beyond clients’ expectation. We take the time to fully understand our client’s detailed requirements in order to get what they want. Your home is important to us just as it is to you.


A renovation or extension is a great way to add value and aesthetic appeal to your house. However, it can be a stressful process. At Quadrio Building Services, we strive to ensure that the whole process is easy, simple and on budget. We guide you through every stage of renovation from initial appraisal and sketch conceptualisation to the construction plan and final approval. We are your one-stop home renovation and extension specialist in Hawkesbury Region. For every project, we put our fully experienced, passionate team to work together and deliver service of the highest quality. Whether you are looking at extending your home upwards or outwards, we’ll make sure you get what you want when the project is complete.
Quadrio Building Services provides home building solutions including extensions, small and large renovations, bathrooms & kitchens, decks and pergolas.


 Quadrio Building Services is North West Sydney’s extension and renovation specialist. This our area of expertise and we have over 50 years of experience in the building industry. We will always have a solution to any problem that may arise during the entire construction process.
 Superior Building Knowledge - with previous experience in all facets of residential construction. You have the peace of mind that you’re dealing with an industry specialist.
 Communication - You will never be left wondering. We keep you informed with what is happening, when and why from start to finish and we’re always more than happy to answer your questions.
 Complete Package – We offer complete Turn-Key package. From concept sketches to development applications and certificates to final inspections and Australians Standards compliance reducing your time and stress.
 Budget and Time – We will work out you budget with you and deliver your project on budget and on time.
 Quality - We hand pick all our employees and contractors to ensure they have the same passion for quality and customer satisfaction that has come to be expected of us
 Reliability – We guarantee that our employees and contractors will be onsite when they say they will be. They will be well presented, skilled and will respect your property just like you would.
 Quadrio Building Services sites are all compliant with occupational health and safety requirements ensuring no unnecessary delays or compounding issues.
 Licensed and Insured – We are fully insured and for your security we have Home Owners Warranty, Contracts Works, Public Liability and Workers Compensation insurance so that you are not at risk.
 Master Builders Association Member – continuous education and skill training. You can feel confident that only the most qualified and skilled tradespeople are working on your project.


1. Quadrio Building Services guarantees to deliver you a stress-free building process and a finished product that will be everything that you imagined — we stake our reputation on it.
2. 100% transparency in communication with regular updates and site visits.
3. Full 7-year structural warranty.
4. Highest quality finishes implemented by specialist tradespeople with industry expertise.
5. Your vision is our priority - We want your home to be your castle, any changes you choose to make at any stage of the project are your choice because we want you to be 100% satisfied with your home.
6. We understand that you aren’t as familiar as us with all the decisions that need to be made in order to extend or renovate a house (and in what order). We will create and maintain a project timeline for your home which will keep you informed about the construction progress and upcoming selections that are required.

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Our team

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Position – Director/Builder

Time with us – Company Founder

Experience – 15 years a carpenter/builder, experience ranges from small renovations and decks right up to custom new homes, schools, and $10milion commercial developments. Started QBS 4 ½ years ago. Always wanted to have my own company and be my own boss. Love to be hands on with everything that the company does.

Interests – His 3 young children, working hard and setting a good example for my them, building, property, CrossFit, water sports

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Position – Site manager

Time with us – Time with us – Newly employed

Experience – A carpenter and builder and had his own successful business for 15 years before joining us. Specialising in high end renovations and extensions in the Hills and Hawkesbury areas

Interests – His 3 children, spending time with family and friends, water sports, dirt bike riding, camping

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Position – Carpenter

Time with us – Has subcontracted to us for about 6 weeks, will be employed with us in the near future

Experience – A carpenter for 14 years, has work for himself for 4 years doing all manner of carpentry and building

Interests – Spending time with family and friends , water sports

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Position – 4th year apprentice

Time with us – 2 years

Experience – Has spent 2 of his 3 years working with Quadrio Building Services so therefore he is experienced what we do

Interests – Spending time with friends, dirt bike riding

Quadrio Building Services was contracted to complete various building work at our Castle Hill house including new deck and lined pergola, internal wall additions, new entry doors and architrave and skirtings. The work was completed quickly at a high level of quality and we always were kept up to date…
R. Guy
Castle Hill, NSW
I engaged Andrew and Quadrio Building Services based on the recommendations of a colleague at work. We required a very substantial retaining wall to be built at our new build property along with steps and a balustrade to an external door prior to being able to move in. I was…
W. Brown
Castle Hill, NSW
My wife and myself have engaged Andrew and his team at Quadrio Building Services on 2 occasions to conduct renovations and an extension to our existing home. Andrew's professionalism and attention to detail was impressive. Andrew worked closely and effectively with us to create the vision we had for our…
N. Chevell
Kenthurst, NSW
Our home was built in the 70’s and was a very closed in and boxy design. We purchased the home in 2012 as a newly married couple and it was fine, but after having two children it just felt tiny and cramped. We love the area and didn’t want to…
Kate H.
Kings Langley, NSW
Andrew and his team have done a number of projects at our house, big and small.  Andrew's work is absolutely first class.  Our indoor/outdoor extension, new bathrooms, large new decking area and pool cabana are amazing, and we have had so many people comment on the quality of the workmanship. …
S. O’Donnell
Kenthurst, NSW
My husband and I are extremely happy with our new kitchen. We were very impressed with all aspects of the design and building process, from the initial consultation and design through to the completion of our kitchen. The quality of our kitchen and the workmanship were excellent. All tradesmen involved…
K. O’Brien
Kellyville, NSW
Thank you, Andrew & the team. You have done an amazing job. I would highly recommend. Quality of work was great. Quick and efficient. I will definitely be using him again.
L. Lahoud
Kellyville, NSW
Thanks again Andrew for completing our deck and bull-nosed veranda. We are really happy with the work and hope to do some more work for us again soon!
D. Broker
Kurmond, NSW
Quadrio Building Service did a fantastic job for us with the House Renovation and Extension earlier this year. The were prompt and honest with their services to us and most importantly, completed the work within the time frame promised. I will recommend their services and will gladly use them again.
R. Dike
Colyton, NSW
My Husband and I knew we wanted to renovate our bathroom, ensuite and laundry however we had no idea where to start. After talking to Andrew we were immediately comfortable that he could assist us with what we wanted whilst having minimal impact to our busy lives (which for us…
C. Sutherland
Bligh Park

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