O'Brien Plumbing & Roofing is a locally owned and operated plumbing and roofing company servicing the Central Coast and Northern Sydney regions of New South Wales. With over 30 years of combined trade experience across residential, commercial, and industrial sectors, we deliver licensed plumbing, roofing, gas fitting, drainage, and maintenance services to homeowners, property managers, strata bodies, schools, aged care facilities, and commercial property owners.
We are not a franchise, not a call centre, and not a lead aggregator. We are a permanent local business with two physical offices, a fleet of fully equipped service vehicles, and a team of qualified tradespeople who live and work in the communities we serve.
Founded on the Central Coast, O'Brien Plumbing & Roofing has grown from a single-operator business into a multi-team operation with two permanent locations. Our Wyong office at B4, 4 Dulmison Avenue services the entire Central Coast from Woy Woy to Lake Munmorah, while our Hornsby office at 22-28 Edgeworth David Avenue covers Northern Sydney from Berowra to Pennant Hills and beyond.
This growth has been built on a simple principle: do the job properly the first time, communicate clearly, charge fairly, and stand behind the work. Our management team brings over 40 years of combined industry experience, and our team includes qualified plumbing and roofing specialists with ongoing training in the latest standards and a genuine commitment to quality workmanship.
Our service range covers the full scope of plumbing and roofing work that residential and commercial properties require:
Our team includes licensed plumbers, drainers, gas fitters, and roof plumbers. Every technician holds current NSW qualifications, a valid White Card for construction work, and undergoes regular professional development. We also maintain Working With Children Checks for technicians who attend schools, childcare centres, and NDIS properties.
Our office team includes trained customer service representatives who understand plumbing and roofing terminology, can triage emergency calls, and provide accurate timeframes. When you call O'Brien, you speak to a real person who knows the trade — not a generic answering service.
Our Wyong-based team services the entire Central Coast region including: 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.
The Central Coast presents unique plumbing and roofing challenges including salt air corrosion on coastal properties, clay soil movement affecting underground pipes, established trees with aggressive root systems, and ageing fibro and tile housing stock from the 1960s-1980s that requires careful maintenance and upgrading.
Our Hornsby-based team services: Hornsby, Waitara, Asquith, Normanhurst, Thornleigh, Pennant Hills, Wahroonga, Berowra, Mt Colah, Mt Kuring-gai, Brooklyn, Cowan, Galston, Dural, Cherrybrook, and Castle Hill.
Northern Sydney properties face their own challenges including steep terrain affecting stormwater drainage, bushland proximity creating leaf and debris problems for gutters and downpipes, sandstone geology complicating underground pipe repairs, and heritage properties requiring sympathetic plumbing solutions that maintain character while meeting modern code requirements.
Every job we undertake is backed by our commitment to:
O'Brien Plumbing & Roofing has over 30 years of combined experience servicing the Central Coast and Northern Sydney regions, operating from two permanent office locations in Wyong and Hornsby.
We service the entire Central Coast NSW (Wyong, Gosford, Tuggerah, Terrigal, Woy Woy, Erina, The Entrance, Toukley) and Northern Sydney (Hornsby, Wahroonga, Turramurra, Pymble, Beecroft, Normanhurst, Thornleigh, Pennant Hills).
Yes. We hold NSW Fair Trading Licence 311087C and carry full public liability and professional indemnity insurance for all residential and commercial work.
Yes. We provide 24/7 emergency plumbing services including weekends and public holidays. During business hours (Monday–Friday 7am–5pm), our team handles scheduled maintenance and planned works.
Wyong Office (Central Coast): B4, 4 Dulmison Ave, Wyong NSW 2259 — (02) 4351 3665
Hornsby Office (Northern Sydney): 22-28 Edgeworth David Ave, Hornsby NSW 2077 — (02) 9477 1519
Open Monday to Friday 7:00am – 5:00pm. Emergency plumbing available 24/7 including weekends and public holidays.