Every construction project is a major undertaking and, with precision and expertise required in even the smallest details, cannot be rushed through to completion. From the day it was founded, in 1998, CKJ Building Services has striven to provide excellence in everything it does and has continually developed its services to all of its clients with that basic principle in mind.

Missions and Values

To meet, and then exceed, our clients’ expectations at every stage of a project, from the initial consultation to the final day of the project.

This mission is built upon solid values that we hold dear; values that we know distinguish us from our competitors. We believe in building lasting relationships with our clients by providing professional excellence while maintaining an approachable attitude and open lines of communication. After all, you hire us to make your vision a reality, not ours.

We also strive to cause the absolute minimum interruption to our clients’ daily operations. So, whether you’re a school, whose students and teachers cannot be distracted, a manufacturing firm, whose production cannot be impeded, or corporate office, whose staff cannot be disrupted, we endeavor to complete the contract as swiftly and efficiently as possible

Range of Expertise


We have built an enviable reputation in the building industry in general, but it is our work in the commercial sector in particular that has seen us gain many plaudits. In fact, amongst the range of projects we’ve completed is major construction and renovation work for the manufacturing, services, F&B, hospitality and educational sectors.

Whether a new factory complex needs to be constructed on a green-field site, a restaurant requires a major refitting, an office floor needs to be re-modelled and modernised, or a school requires a complete renovation and new classroom space to be created, CKJ Building Services understands the specific needs that clients have and the variety of challenges the particular project can face.

That is why, as part of our service, we are happy to provide practical advice to our clients on the best available options, from the initial planning of the project through every challenge that rears its head.

And, because of our proven experience in project management, our clients can be fully confident that the work will be finished on time every time, and within budget. In fact, we have built a network of affiliate partners to ensure that even the most complex projects are efficiently and cost-effectively run.


Customer Reviews


Hi Colin,

On behalf of me and my husband, I would just like to thank you once again for the great work you did in overseeing the job at our unit. As we mentioned, the issue in our bathroom has been ongoing and unresolved for several months now and in all honesty, we had almost given up all hope of ever seeing the end of it!  Therefore, going on to deal with someone who was so prompt, professional and organised was a welcome change. We are delighted that you have been able to complete in the space of a few days what no-one else has even come close to in as many months.

Thanks again, we will not hesitate to recommend your services to anyone.

Phoebe and Andrew

Hi Chris,

We are very happy to provide this testimonial for CKJ Building Services.

CKJ undertook a full renovation and extension of our Turramurra property and transformed it from a 1950’s bungalow to modern, open and easy living house. Chris and team were open and constructive during planning phase, excellent in communicating, problem solving and finding building solutions during construction – especially Site Foreman Greg and provided a high quality finish at handover.  We can highly recommend CKJ Building Services.

Denis and Dee Phelps

Dear Chris & Team

Heritage architecture and construction can be a difficult set of challenges for all the parties concerned.

Traditional buildings even trouble Council staff as the issues are often not clear cut in terms of what parts of the building are significant and worthy of retention and how to deal with any trade-offs which may occur when assessing a complex site.  The Riverstone site was just one of those projects where a long history had surrounded the house, was evident in the building and the planning consent related to the contemporary project. 

Council had required a number of reports and documents related to the building materials, the landscape in the vicinity of the structure and the reconstruction of three very primitive timber sheds associated with the residence.  CKJ came to the project with a good track record in dealing with major heritage projects and proved to be more than up to the challenge.  In particular when faced with building materials in substantial decay, problematic site conditions and an unknown end use for the building, the issues were patiently resolved.  The separate tasks were carefully segregated and dealt with one by one. Special footings, hand deconstruction, tagging of hundreds of separate components and then patiently analysing the opportunities for salvage and re-use.

In terms of the cottage, the trades went to great lengths to seek alternative means of conserving materials, details and paint finishes. There was genuine pride and appreciation evident in the working process and this showed clearly in the end product.  Our practice found it a pleasure attending the site visits and participating in the 6 month adventure of the project during the works. As architects, and heritage consultants we earned many benefits and collected additional knowledge from CKJ through participating in the construction program.

We would highly endorse the organization and the team that we worked well with at Riverstone.

David Scobie, Nominated Architect

David Scobie Architects Pty Ltd


Our Team

Our reputation as one of the leading construction companies in Sydney comes as a result of our history of excellence in the industry. That excellence has been achieved though our very experienced team led by director and CEO Chris Cowley.

The founder and director of CKJ Building Services, Chris has gathered a wealth of experience in all aspects of the building industry since he began as an apprentice carpenter in 1981. In that time, he has learned to achieve the highest standards in carpentry, joinery and construction from master tradesmen, and how to overcome the every-day challenges of the building trade through years spent on-site.

Amongst the significant projects he has worked on were the OTC Building on Elizabeth St, as Foreman, the 105-unit Glebe Gardens project in Hereford St, Glebe, as Project Manager, and construction of the Western Stand of the Olympic Stadium as Site Manager.

Other key team members are Chad Cowley, Jarrod Cowley, Oliviae DeCaires and Greg Young who have all brought a considerable combined expertise to the firm, enhancing its range of capabilities and its quality of work, and helping to make CKJ Building Services the leading light of the building trade that it is today.