Estimating, engineering and technical advice for builders on the Central Coast

I’m Aaron Oates, a Building Consultant specialising in making things just that little bit easier for builders and homeowners on the Central Coast. I don’t see problems – I see challenges and solutions, and love nothing more than to see your building project designed right.

I work closely with you on new builds, renovations, second storey additions and decks to provide technical advice, estimating services and preliminary engineering expertise.

Drawing from my many years of experience working in the building industry, I streamline the building process and make your life easier by saving you time and money with one supplier.

With an extensive network of builders, architects, designers, suppliers and tradespeople on the Central Coast, I recommend only the best professionals to ensure your project is completed to the highest standards.

BTH Performance Services


I’ll work with you on the project you plan to tackle and look after the estimating, quoting, ordering and supply process.

If you already have building plans, I’ll use them in my processes, or can refer you to an experienced and reputable Builder, Architect or Building Designer. I’ll put together your Bill of Quantities and aim to quote and supply as much or as little as you need.


I specialise in designing structural members for decks and pergolas, and lintels above windows and doors. I can engineer the structural components of your project and will consult with a licenced Structural Engineer when needed.

I’m not a Structural Engineer myself which works in your favour – I have enough experience and know how to tackle simple engineering tasks without the hefty price tag that will come from an Engineer.


With more than 17 years experience in the building industry, I have a wealth of knowledge I can pass onto you. I have a Diploma of Architecture and am an experienced Carpenter, and have worked on job sites and as a consultant in various supply stores.

This ‘all-round’ background means I’ve learned a thing or two about the building process and can provide technical advice and support where it’s needed.

As a Building Consultant, I help streamline the management of your building project to minimise risk and maximise client satisfaction.

Our Clients


“I have been the director of a privately owned construction business on the Central Coast for the past 35 years. Aaron has consistently provided me with outstanding service. I have managed multi-million dollar jobs and Aaron has always been able to provide me with the niche products required for construction. His specialist knowledge throughout the construction industry greatly exceeds all my expectations and his expertise and knack for getting things done will benefit anybody he comes across”

David Felsch | Felsch Developments

“United Built have been using Designrite for over 2 years now. Aaron saves us time with our project estimates and his product knowledge allows us to offer our clients design and product alternatives. Aaron is easy to work with, timely in his response and professional in his advice. We would always recommend his services”

Andrew Keyes | United Built

“Consulting to businesses across Australia, I'm fortunate to occasionally run into genuine rising stars, Aaron is exactly that. Under difficult conditions, Aaron functions with pride, diligence and a desire to improve not just his own knowledge and performance, but also that of the people around him. A fella with the determination to succeed and the skills to make it happen, Aaron delivers huge benefits to his clients through magnificent customer service skills, product knowledge and desire to help others. Aaron has the effect of pulling-up those around him into a higher level of performance.”

Jeff White | BTH Performance

“I have used Aaron for several projects, from estimating to technical advice on timber spans etc and have always found him easy to deal with and very informative. Always a pleasure to deal with such a professional approach to everything he does. Highly recommended to anyone.”

Shayne Price | Custom Creations

“I've known Aaron for 15 years. He is the man when it comes to timber and all of your building requirements. He has always been my go to man, happy and obliging person to deal with. His knowledge of the building industry is as vast as anybody I know in the game.”

Mark Saich | Master Builder

“Aaron designed two decks for me. He was helpful, prompt, thorough and showed excellent knowledge of what was required. The builds went very well, and ended up being a perfect match to his preliminary 3-D visualisations. I have no hesitation at all in recommending him”

Janis McAloon | Killcare Heights

Why work with BTH Performance?


Save Time

I do all the running around so you don’t have to. I look after your Bill of Quantities, order materials and supplies, decipher plans and quote everything you need, saving you many hours of precious time.

Save Money

Often, it’s not what you know but who you know. I have an extensive network of suppliers and building contacts on the Central Coast and can source the most competitive deals for you and your clients.


Save Hassle

Quoting, ordering, reading plans and meticulous checking can be a hassle for builders who just want to get on with building. That’s why outsourcing the fiddly parts of the job can be a huge weight off your shoulders.

Contact Us

I’d love to have a chat with you about your next building project. Whether you simply need a bit of guidance on a specific part of the build, or want complete technical expertise and support for the whole job, I can help.

Give me a call, shoot me an email or fill in the contact form below and I’ll be in touch with you soon.

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