I’ve had the privilege of working with Dan for over 15 years, both on site in construction and in the development of project documentation. During this time, he has consistently demonstrated exceptional expertise in building services construction documentation. His work is accurate, well-coordinated, and aligned with both design intent and on-site requirements.
With a strong background in construction, Dan brings a practical, solutions-focused approach that supports efficient project delivery. He is professional, reliable, and adds significant value to any project team. I would highly recommend him to consultants, contractors, and clients alike.

I highly recommend Daniel from Construct for any project handover documentation. Daniel manages all of our hydraulic as-builts and Operations & Maintenance manuals. He consistently delivers highly accurate, professional work that keeps our projects compliant and our clients happy. He is a genuine pleasure to work with, communicates well, and always gets the job done right the first time

Daniel delivers our O & M manuals from For Construction documents and Numecon’s material submissions. His attention to detail and ability to sort the manuals out after all the changes to equipment during the construction phase is a tribute to his organisation skills and knowledge on building services. We have used Daniel over past 10 years and highly recommend using his services

Daniel Heynen has been doing all our Owner operator manuals for a few years know in our HVAC business. We have found Daniel really easy to work with. He is understanding when we have pressure to get these documentations done quickly. Daniel understands the trade and construction, which helps a lot with wording and knowledge of what he is writing and what our clients like to see. The documents present well and are very easy to follow.
Daniel also does some of our as-built drawings which is another helpful service he offers us.