Make your home a healthy and enriching space
with the support of a building biologist in Sydney

A healthy home is a happy home Book an Inspection

Welcome To Building Harmony

Hey there!

My name is Russell Williams and I’m an ACES-certified mould-testing technician and a building biologist in Sydney. ACES is the Australian College of Environmental Studies and is a nationally-accredited training service provider.

I’m qualified to conduct a health assessment on your homes and workplaces because in addition to my experience, I’ve also completed a recognised course in mould testing (BLDBIO605 Conduct a Mould Assessment), an Advanced Diploma of Building Biology at the Australian College of Environmental Studies and I also hold a Water Damage Restoration Technician certificate from the Institute of Inspection Cleaning and Restoration Certification (IICRC).

My other qualifications include a BSc (Hons) in Environmental Studies and a TEC Ordinary Chemical Technicians certificate.

Russell Williams


We identify the sources of excess moisture and the extent of the spread of mould in your space.

Indoor air pollution

We help you find out what’s in your air and what can be done to make the air cleaner for your family.

Electromagnetic fields

You may be highly sensitive to electromagnetic fields. We identify the extent of this in your home.

Should I have my home assessed?

Your home is where you spend the majority of your time in. It’s where you connect with your loved ones and put your feet up at the end of the day. Imagine, then, if this space is secretly affecting your mental and physical health, causing health issues with no apparent cause or cure.

Regardless of whether you’re about to purchase or rent a new property or whether you’ve been living in your home for years, a Healthy Home Assessment will help you make sure that your home is a safe space for you and your loved ones.

Download a Free eBook

Wanted: EMF radiation reduction
eBook - Is your workplace a productive and healthy space?
Is your home a healthy space?
eBook - Is indoor air pollution dragging you down?
eBook - Got Mould!

A certified building biologist


Trusted ACES certifications


Comprehensive reports

We cover it all!

Whether you have your home or workspace in mind, our building
biologist, Russell Williams, supports you with comprehensive building health assessments.

Our testing covers
An indoor air quality assessment | A water source assessment | An allergen assessment
A mould inspection | An electromagnetic field assessment

If you want to create the perfect environment for your teams to work productively and efficiently, making sure that your space is free of silent health issues is important.
If you are a builder and you want to make sure that the properties you build are healthy, get in touch with our building biologist to add value to your services.
Home is where the heart is. Make sure you’re safeguarding your loved ones and yourself by making sure that your home is free of mould, air pollution, and other issues.


Russell is very knowledgeable and easy to talk to. He used instruments to show areas that needed improving

Carlita Casey

Russell was very helpful. His report was extremely detailed and address things we didn’t realise could be issues

David Morgan

We hired Russell to check our office space. We had issues with poor air quality and a really bad electro-climate. His assessment pointed us in the right direction and I’ve noticed that my team is much healthier and happier now – a big thank you to him.

Jake Peters – a big thank you to him!

When we first had our babies, we were worried about whether our house was a safe space for them (it’s quite old to begin with). We decided to hire Russell to do a quick assessment and we are so glad we did. We didn’t even know that we had long-term mould issues! Luckily that’s all fixed now and we have nothing to worry about 🙂

Kiara Morison

Russell’s consultations were perfect and if not for him, we would have not known how unhealthy our home was! He was an absolute professional and showed us exactly what was wrong and made a few recommendations on how we could rectify these issues.

Tony Mason – Highly recommended!

Our blog

News and articles
The Dark Side of Mould: Stachybotrys

As a professional Building Biologist, I often come across scenes of destruction such as the one pictured from one of my recent mould and moisture inspections. This is the result…

Healthy insulation options and why you need them for your home

The insulation of a home plays an important role in maintaining its internal temperatures. Keeping this temperature at a comfortable level during the winter or summer months is crucial, but…