Calah Contracting

20/01/2026

Our new and improved website is now live! 🙌🏼
Check it out below;

Calah Contracting offers expert earthworks, civil, and drainage services across Waikato, specialising in residential projects, water infrastructure, and site works with trusted quality.

13/12/2025

Merry Christmas from all of us! 🎄 As we wrap up the year, we’ve been reflecting on just how much growth this year has brought. From new opportunities to new faces and plenty of learning along the way. We want to say a huge thank you to all of you who have supported us, followed along and been part of our journey this year. We hope your Christmas is filled with joy, laughter, good food and a well earned break! 🎁 Wishing everyone a safe and happy holiday and we look forward to what next year brings 💥

24/11/2025

Meet Bruno 👋🏼

Coming from a civil background, he typically gets excited with bigger pipes, however he is finding a new love for the smaller stuff too! A handy all rounder that loves to give anything a crack. Outside of work you would find him catching a wave, out fishing or soaking up the rays on a day out at the Mount. If you think he looks familiar, it’s because he’s Calum’s younger brother. Same genes, more tattoos and a bowl cut that only he could pull off!

If you see Bruno around, give him a wave 🤙🏼

06/10/2025

Meet Jack 👋🏼

Jack is one of the newer faces on the Calah team, though he and Calum go way back to their very first block course together. A certifying Drainlayer and sharp operator, Jack brings more to the crew than just his Crossfit quads. He adds skill, experience, and a solid expertise to every project.

If you see Jack around, give him a wave 🤙🏼

28/09/2025

Meet Blake 👋🏼

Blake was our first employee, joining us fresh out of school with more energy than a double shot of espresso. Young, full of drive, and eager to learn.

Blake loves all things outdoors, whether that’s working in the elements, hunting down the perfect fishing spot, or finding new ways to get dirt on his boots. Around the team, he’s known for his quick banter and easy laughs that can lighten even the toughest days in the mud. Oh and if there’s a pie run to organise, he’s already got your order.

If you see Blake around, give him a wave 🤙🏼

25/09/2025

Just a couple drainlayers out in the wild 🏞️

03/04/2024

Welcome!
We are Calum & Sarah McNab.

We have recently started our own business called Calah Contracting where we specialise in project management, earthworks & civil drainage.
Calum is a plumber/drainlayer by trade but finds he is happiest in his machinery 😅

We are a local couple - young, energetic & passionate and are well equipped to get into servicing the Matamata & surrounding regions.

If you have a project that requires multiple trades, we have access to many subcontractors so we can take away the stress of the project management and do it all for you!

Calum is very knowledgeable in the construction & civil department so you can feel confident that we will have everything covered for you.
Sarah has great experience in the administration side of business, ensuring all aspects of the projects are satisfied, from the very beginning to the very end.

Examples of other work we can do (but not limited to);
✔️ Sand pads
✔️ Farm excavations
✔️ Pool projects
✔️ Landscaping
✔️ Driveway preparation
✔️ Preperation for subdivisions
✔️ Cartage

Give us a call or send us a message - we would love to hear from you 🙌🏼