Broaden is a South Australian based Building company that is owned and operated by a qualified carpenter with over 20 years experience in the industry. Broaden specialises in renovations and extensions to existing homes, particularly second storey additions.

We offer a fresh and modern approach to building projects that is backed up by a high level of skill and experience. We can help you with all stages of your building project from concept design and building approvals through to construction and handover. Broaden can also offer flexibility in the services provided in the interest of saving costs for our clients.

Choosing Broaden to assist you on your building project ensures that the owner of the company is there with you every step of the way. This ensures a personalised and trusting relationship with all our clients. Having the building company owner on site also means that problems can be promptly solved to minimise delays.

Broaden is proud to offer a high quality service and build, with attention to every detail. Broaden is invested in providing a broad range of solutions to help you get the result you are looking for.

Some of our projects


Free Consultation

Free initial consultation to discuss your plans and ideas for the building project. Broaden will offer advice and feedback and discuss your budget requirements.

Cost Estimate

Broaden will provide you with an estimated price range for your project.

Concept Sketch

Broaden will arrange for an architect to provide an initial concept sketch.

Design and Planning

Once you are completely happy with the concept design and wish to progress with the project, Broaden will provide you with an engagement of services form to complete. Planning drawings are then prepared as a package for council submission.

Client Selections

During the council planning submission, Broaden will work with you to make your selections of products and materials, and provide options to align with your budget.


Broaden will provide you with a formal quotation based on the planning drawings and selections.

Building Contract

Upon your acceptance of the quotation, a building contract will be completed by both parties. The contract will outline the price, selections, a schedule for progress payments and deposits and estimated start and completion dates.

Building Approval

Once the contract is completed, Broaden will work with a private certifier to have your project assessed for compliance with the relevant building codes and standards, and final building approval issued.

Final Price & Contract Review

A final fixed price can be determined taking into consideration any amendments to plans that may have been required during the building approval stage.

Project Commencement

Building can commence upon issue of the final building approval from your local council.


Broaden has assisted with extensions to our St Peters home on 2 stages

The major extension involved adding significantly to our family area including constructing a timber framed addition which encompassed our kitchen area and improved family area.  This included a roof extension, significant Hebel wall covering, through to new timber flooring.

The second stage included updating bedrooms, 2 bathrooms and creating an en-suite to the main bedroom.

Mark brings to the job a great deal of building experience and expertise.  His approach is to co-operate with his client and to assist them with advice and assistance where requested and appropriate. His management style insures he has happy staff who also desire to give a quality job in a timely fashion.

We are very happy with the outcome of both stages of our renovation.  He and his tradesman completed our job in the time expected. He concentrated himself and his trade’s efforts on our project and used quality professional tradesman to complete the work.

He also carefully selected his sub-contractors for the specialist work they carry out.

We found Mark and his people easy to work with and very trustworthy.

We believe we received good value for the quality job he did for us.

We highly recommend Mark and Broaden.

Helen & Malcolm Germein

St Peters

My husband and myself decided to build a second storey to our house to accommodate our expanding family. We found that Broaden was more than competent to help us achieve this.

Mark was more than happy to sit us down and talk about a reasonable price for the both of us. My husband and I thought that we got value for money.

We found that Mark and his co-operative team were very professional, trustworthy, and completed the project in a time that we were happy with. This is also highlighted by the fact that Mark and his team had to take time off work to avoid extreme weather conditions. With Mark being the professional person that he is, he came through out-of-hours to check on our house through these times.

We chose Broaden purely on face value, and one of Mark’s comments that stood out to us, was “I prefer to start and finish a project before starting another. This was vital if he was going to pay full attention to the house of our dreams.

Overall, we were more than happy with Mark and his trustworthy, reliable, and honest team. Mark was very considerate and approachable with our entire family and we are quite grateful for this.

Everyone that has approached us are more than impressed with the modern change to our modest house.

Colleen & Steve McDougall

Noarlunga Downs

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