We continue to be available to service your electrical needs. Given the ever-changing situation, we continue to put increased hygiene and protective measures in place to help keep customers and staff safe, including the latest requirements.

Electrical Contractors Castle Hill

In 2010, Director Adrian Cassin founded O’Brien Electrical Castle Hill, formerly known as Wirez Electrical. During 30 years in the electrical service industry, we are proud to have built a reputation based on our lived values of integrity, and respect for our customers. This approach has gained customer trust, based on our aim of not just meeting, but exceeding expectations.

Locally owned and nationally supported, we are proud to be part of the leading O’Brien Electrical & Plumbing group. This means that no matter the size of the job, our professional and locally-based Castle Hill electricians will deliver the high-quality service you deserve.

O’Brien electricians are conveniently located to serve properties in the Hills area of Sydney. We are handy for customers in Baulkham Hills, Annagrove, Kenthurst, Beaumont Hills, Dural, or Box Hill.

Just give us a call, and we’ll attend promptly, providing high-quality solutions to all your electrical problems.

Our electricians in the Hills District complete repairs, servicing, replacements and fresh installations. No matter what electrical work you need, our fully qualified and highly experienced team will get the job done safely, correctly, and for an affordable price.

Why Choose O’Brien Electrical Castle Hill?

  • Over 30 years’ of experience
  • Available 24/7 for any electrical emergency
  • Locally owned & operated throughout Castle Hill and the surrounding suburbs
  • Accredited Master Electricians

For professional and reliable electrical contractors in Castle Hill, get in touch with our team today. Contact us online or call us on today.

Call Us (02) 9894 4843


Are you a licensed electrician?

Yes, we are fully licensed electricians capable of carrying out a broad range of electrical services for both domestic and commercial clients.

What is a Master Electrician?

A Master Electrician is an electrician who has been accredited by Master Electricians Australia. This industry group ensures the quality and standards of trusted electrical experts. Master Electricians are backed by a higher level of expertise and deliver a greater quality of service.

Why Use A Master Electrician?

With a Master Electrician, you can rest assured all your electrical requirements are in safe hands. By using a Master Electrician you’ll receive truly expert electrical services in a safe, reliable and professional manner.

Meet the team

Adrian Cassin


Adrian Cassin

With over 30 years' experience, Adrian is a skilled Director with a demonstrated history of working in the electrical contracting industry.

Who we've worked with

PRP Diagnostic Imaging
Palatial Homes
Harvey Norman

Do you have broken glass?
Call us now on 1800 059 829

For emergency glass repair or replacement in your home or business, speak to one of our experts. We'll discuss options, costs and appointment times.

We'd love to help you, but unfortunately cannot assist with:

  • Cook tops or oven doors
  • Refrigerator glass
  • Light and lamp shades
  • Spectacle repairs
  • Phone or tablet screens
  • Curved glass or tanks

Is your plumbing job an emergency?
Call us now on (02) 9894 4843

Your message may not be seen until the next business day, so if this an emergency job please call us directly now on (02) 9894 4843 and we can get to you as soon as possible

Is your electrical job an emergency?
Call us now on (02) 9894 4843

Your message may not be seen until the next business day, so if this an emergency job please call us directly now on (02) 9894 4843 and we can get to you as soon as possible

Get expert help

Are you sure you want to leave?

Exiting this page will clear your answers.
Sorry, there was an issue saving your booking.

Please try again later.

We are sorry, but that service isn't currently available in your area.
Not available

But we're adding more locations and services to our list!

To receive information regarding new products, services and content from O'Brien®, please enter your email below and we'll be in touch!

Thank you. You will be notified when we are able to service your request.
Thank you for choosing O'Brien Electrical Castle Hill!

You’ll hear from us shortly about your task, and we’re looking forward to getting you booked in with one of our experts as soon as we can.

If your task is an emergency, we recommend you call us on (02) 9894 4843.

Return to website
Where do you need the work done?
Take a minute to tell us about your task.
What do you need help with?
In what type of property is this task?
Would you like mobile or branch service?
Where will the task be done?
Do you require a repair or replacement?

For windscreens, if the damage is smaller than a one dollar coin and 5cm away from the edge, we may be able to repair your windscreen. We cannot repair side or rear glass.

Will you be claiming on insurance?
Tell us your vehicle registration details
Vehicle registration
Vehicle registration state
How soon do you need the work done?
Tell us a few details about yourself
First name
Last name
Phone number
Email address
Is there anything further you'd like to tell us about your task? (optional)

By clicking submit you confirm that you have read and accept the O'Brien® Privacy Policy and Terms of Use.