Contact O'Brien Plumbing & Roofing

We operate from two permanent locations serving the Central Coast and Northern Sydney. Whether you need to book a routine plumbing job, request a quote for a roofing project, or report a plumbing emergency, our team is ready to help. For emergencies, call either office 24 hours a day, 7 days a week — a real person will answer and dispatch a plumber immediately.

Wyong Office — Central Coast

Address: B4, 4 Dulmison Ave, Wyong NSW 2259

Phone: (02) 4351 3665

Email: wyong@plumbing.obrien.com.au

Hours: Monday–Friday 7:00 AM – 5:00 PM | Emergency service 24/7

Service area: Wyong, Tuggerah, Gosford, Terrigal, Erina, The Entrance, Bateau Bay, Woy Woy, Umina Beach, Kincumber, Avoca Beach, Toukley, Budgewoi, Killarney Vale, Long Jetty, Charmhaven, Kanwal, Hamlyn Terrace, Woongarrah, Blue Haven, San Remo, Gorokan, Lake Haven, Tumbi Umbi, Berkeley Vale, Lisarow, Narara, Niagara Park, Point Clare, Copacabana, Wamberal, East Gosford, Erina Heights, Wadalba, Noraville, Saratoga, and Ettalong Beach.

Hornsby Office — Northern Sydney

Address: 22-28 Edgeworth David Ave, Hornsby NSW 2077

Phone: (02) 9477 1519

Email: hornsby@plumbing.obrien.com.au

Hours: Monday–Friday 7:00 AM – 5:00 PM | Emergency service 24/7

Service area: Hornsby, Waitara, Asquith, Normanhurst, Thornleigh, Pennant Hills, Wahroonga, Berowra, Mt Colah, Mt Kuring-gai, Brooklyn, Cowan, Galston, Dural, Cherrybrook, Castle Hill, and surrounding suburbs.

When to Call

Call us immediately for:

Burst pipes or water leaks — we can isolate the supply and repair the damage
Gas leaks — if you smell gas, evacuate and call us for emergency gas fitting response
Blocked drains and sewage overflows — same-day CCTV inspection and high-pressure clearing
No hot water — we carry common parts and can often restore hot water in a single visit
Roof leaks during rain — emergency tarping and temporary repairs to prevent further damage
Flooding or stormwater issues — pump-out, drainage clearing, and flood damage assessment

Book a Non-Emergency Job

For scheduled work such as hot water system replacements, bathroom renovations, roof restorations, gutter replacements, or maintenance inspections, call during business hours or submit a request through our website. We aim to provide a quote within 24 hours and can typically schedule non-urgent work within 3–5 business days.

Services Available

What to Expect When You Call

When you contact O'Brien Plumbing & Roofing, you will speak directly with a trained customer service representative — not a call centre or answering machine. Our team will:

Understand your issue and assess urgency
Provide an estimated timeframe for attendance
Explain our diagnostic and pricing process
Book a technician from the nearest available team
Send confirmation with the technician's name and arrival window

Licence & Insurance

NSW Fair Trading Contractor Licence: LIC311087C. Fully insured with $20M public liability, professional indemnity, and WorkCover compliance for all employees. All work is performed by licensed tradespeople and backed by our lifetime labour guarantee.

Frequently Asked Questions

What is O'Brien Plumbing's phone number?

Central Coast: (02) 4351 3665. Northern Sydney: (02) 9477 1519. Both lines are answered by trained customer service representatives during business hours (Mon–Fri 7am–5pm). Emergency calls are answered 24/7.

How quickly can a plumber attend?

For emergencies, we aim for same-day attendance. For scheduled work, we typically book within 1–3 business days depending on the service type and technician availability in your area.

Do you charge a call-out fee?

Yes. We charge a diagnostic attendance fee which covers the technician's travel and initial assessment. This fee is quoted upfront before booking and is credited toward any approved work.

Can I book online?

Yes. Use our online booking form to request a service. Our team will confirm your booking within one business hour during office hours.