Estimating support / Administration

New Homes Division – Estimating Support / Project Administration

Full-Time | Monday–Friday, 9:00am–5:00pm

Mannix is a long-established, family-owned South Australian business specialising in air conditioning, solar and electrical services. Due to continued growth in our New Homes Division, we are looking to appoint a Estimating Support / Project Administration team member to assist with the preparation and delivery of new home projects.

This role suits someone who enjoys working with plans, numbers and systems, has a strong eye for detail, and wants to build skills in estimating and project support within a stable business.

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About the Role

Reporting to the New Homes Manager, you will play a key support role in the estimating and pre-construction process, including:

• Assisting with air conditioning designs for new home builds
• Completing take-offs from architectural and builder plans
• Preparing and checking documentation for quoting and job setup
• Supporting estimators and project staff with accurate data and cost inputs
• Maintaining job records, drawings and supporting information
• General project and administration support across the New Homes team

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About You

We are looking for someone with:

• Excellent attention to detail and accuracy
• Strong computer skills and confidence working with plans, drawings, and spreadsheets
• A methodical approach and ability to follow processes
• Good communication skills and a collaborative mindset
• A genuine interest in construction, estimating or building services

Experience in estimating, construction, HVAC, drafting, or administration is an advantage, but training will be provided for the right candidates.

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What We Offer

• $62,000 per annum
• Employment under the Clerical Award
• Stable Monday–Friday, 9–5 hours
• Supportive, team-focused environment
• Exposure to estimating and project workflows
• Career progression opportunities into estimating, project coordination, or management roles

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Why Mannix?

At Mannix, our mission is to supply value-for-money air conditioning and solar solutions while delivering exceptional customer service. As a family-owned business, we pride ourselves on long-term relationships — with our customers, builders, and our people.

You’ll be joining a company that values accuracy, teamwork, and continuous improvement, with genuine opportunities to grow your skills and career.