Since joining Northrop in 2017, Lach has led a team specialising in subdivision, public domain and infrastructure design, with a particular passion for the “three waters” — stormwater, potable water and wastewater systems.

He is a WSAA-accredited designer and a technical leader within Northrop’s Civil Division, known for guiding sustainable and practical outcomes for clients and communities. Lach takes pride in creating public spaces that people genuinely enjoy, from sports fields to skateparks. Outside of work, you’ll likely find him on the sidelines at kids’ sports or walking through local parks he’s helped shape — including his personal favourite, the iconic Bathers Way coastal walk.
Selected Projects:
• Numerous subdivisions, public domain, and infrastructure projects across NSW
• Contributor to Newcastle’s Bathers Way and Newcastle Beach Skatepark
• Appointed Northrop Principal in December 2021