About Matrix Estimating

Your Partner in Construction Cost Confidence

At Matrix Estimating, we are dedicated to helping you achieve construction success through the synergy of over 20 years of industry experience and advanced artificial intelligence. Specializing in commercial, domestic, retail fit-outs, and all facets of construction, we empower our clients with certainty in project costs.

3D construction planning model with colour-coded blocks over architectural drawings
What sets us apart

Why Choose Us?

  1. 01
    Confidence in Costs

    Our precise cost planning, bolstered by cutting-edge AI technology, gives you a transparent financial roadmap that keeps you on budget and free from surprises.

  2. 02
    Strategic Cost Management

    We offer more than estimates; our expert team provides actionable insights to optimize your budget and maximize value without sacrificing quality.

  3. 03
    Extensive Expertise

    With over $120 million in construction projects estimated annually, we utilize AI tools and industry knowledge to navigate project complexities efficiently.

Meet the founder

Meet Cormac: Your Dedicated Partner

Cormac Gray, founder of Matrix Estimating

Cormac, our founder, combines extensive industry knowledge with a commitment to transparency and integrity. With a trade qualification, an engineering degree, and over 20 years in construction, he understands your needs. Cormac values strong client relationships and believes in honest communication—key principles that set us apart.

Outside of work, Cormac finds balance in exploring the outdoors with family or enjoying golf with friends. This blend of professional dedication and personal passion fosters creativity and ensures fresh perspectives on every project.

Qualifications
Trade qualified
Education
Engineering degree
Experience
20+ years
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Our Reviews

Builders, tradies, architects and homeowners who have had us price their work.

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Gouri Cheruvu profile picture
Gouri Cheruvu
18 June 2026
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Cormac was indeed very helpful - providing a detailed construction price range so we knew where to begin by way of commencing our budgeting process. Not many QSs provide such goodwill. Highly recommended
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Roger White profile picture
Roger White
3 June 2026
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Cormac and team did a very thorough job on a tight timeframe. Very happy with the work.
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Tobin delaney profile picture
Tobin delaney
23 May 2026
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I recently engaged Cormac to assist with estimating a large residential construction project and was genuinely impressed. His work was thorough and detailed — every line item was considered, nothing was glossed over, and the output gave me real confidence going into the quoting stage. He was also generous with his time, happy to walk through his methodology and answer questions without rushing. That kind of transparency is rare and genuinely useful when you're trying to understand the numbers, not just receive them. I'd recommend Cormac without hesitation to anyone needing accurate, professional estimating on significant volumes of construction work.
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Imogen Scuteri profile picture
Imogen Scuteri
14 April 2026
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Cormac’s advice stood out to me for being clear, honest, and refreshingly transparent, exactly what I was looking for as a person in need of his excellent building knowledge. He took the time to help me understand my options with the situation I was in. This level of care and clarity gave me genuine confidence in the decisions I was making. What I appreciated most was Cormac’s willingness to provide me advice quickly. It made what could have been a stressful experience feel smooth, well-managed, and ultimately very reassuring. I would %100 recommend giving him a call!
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Joshua Cameron profile picture
Joshua Cameron
25 November 2025
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Matrix gave me some excellent advice regarding a development I was considering on a difficult site. Will use again in the future.
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Tan Williams profile picture
Tan Williams
26 October 2025
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Cormac from Matrix Estimating has delivered a high-level estimate that demonstrates both depth and breadth of understanding. While preliminary in nature, the estimate appears to comprehensively cover the full scope of works, giving us a strong foundation for early-stage planning and decision-making. Cormac’s extensive construction knowledge is clearly evident in the way he approaches costings—his ability to translate technical detail into practical, well-structured estimates is a real asset. The breakdowns are clear and logical, with a level of detail that instils confidence in the numbers, even at this early stage. Communication has been seamless throughout. Cormac is responsive, approachable, and easy to engage with via one-on-one Teams meetings. He takes the time to explain his rationale and is open to feedback, which makes the process collaborative and efficient. Upon completion of the project, I am looking forward to comparing actuals V estimate. Highly recommended for anyone seeking a knowledgeable, professional, and easy-to-work-with estimator who brings clarity and confidence to the early stages of a project.
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Matthew Savetta profile picture
Matthew Savetta
15 October 2025
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Highly recommend.
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David Zajdlewicz profile picture
David Zajdlewicz
2 October 2025
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Their advice was clear, honest, and transparent—exactly what I needed as a client. They took the time to explain the details thoroughly, which gave me confidence in the decisions I was making. I really appreciated their professionalism and straightforward communication throughout the process.
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Barry Gilbertson profile picture
Barry Gilbertson
25 August 2025
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I was very pleased with the estimate that Cormac Gray put together for our new build. This will allow me to have confidence in knowing what the final cost of the new house will be and hence arrange finance. Cheers Barry Gilbertson
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Sera Anticevic profile picture
Sera Anticevic
30 June 2025
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We highly recommend Matrix Estimating for anyone needing clarity and confidence around building costs. We engaged Matrix Estimating after receiving a builder’s proposal that lacked a clear cost breakdown, leaving us feeling overwhelmed and unable to make a confident decision about proceeding with our build. Cormac completely changed that by delivering a new, detailed, and categorised estimate that brought structure and transparency to the project. He took the time to walk us through the cost breakdown and clearly explained the underlying methodology, including the assumptions and benchmarks used. This enabled us to make informed budget decisions with a solid understanding of where each cost originated. From the outset, Cormac was professional, responsive, and delivered exactly what we needed. His report met our brief perfectly - easy to interpret, methodically structured, and underpinned by industry-standard metrics and evidence-based logic. Thanks to Matrix Estimating, we’re now in a much stronger position to engage with our builder on a definitive, realistic budget. Cormac listened, supported us through the process, and delivered a service that reflects both technical expertise and practical insight.

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