Water lying in the yard, a blocked stormwater line, a lawn at Woy Woy that stays soggy for days, or drainage for a new build: that's what we fix, here on the Central Coast where we live and work. Tell us what the water is doing and where you are.
Get a Quote →A drainage system moves water away from your property — off the roof, out of the yard, and into the stormwater network. On the Central Coast, where summer storms can dump 50–100mm in an hour and the soil ranges from heavy clay around Gosford to sandy loam near The Entrance, drainage isn't optional — it's structural protection.
Poor drainage leads to water pooling against foundations, saturated subfloors, retaining wall failures, and long-term damage that costs far more than fixing the drain would have. A properly designed system (surface drains, subsurface ag pipe, pit-and-pipe networks, or French drains) moves the water before it becomes a problem.
Complete stormwater systems — downpipe connections, charged lines, absorption trenches and on-site detention (OSD) designed to council requirements for new builds and renovations.
Subsurface drainage for waterlogged yards, retaining walls, garden beds and subfloor areas. Gravel-filled trenches with slotted ag pipe to redirect groundwater.
CCTV drain inspections, high-pressure jet blasting, root cutting, relining and replacement of cracked or collapsed stormwater pipes.
Drainage around footings and under suspended floors to help reduce rising damp, mould and structural movement — critical on the Coast's clay-heavy soils.
Chapter 3.1 of Central Coast Council's DCP 2022 is split in two because the former Wyong and Gosford councils mapped flood hazard differently. Part B covers the northern area (the old Wyong LGA). Part C covers the southern area (the old Gosford LGA) and holds the on-site detention, retention, creek-setback and drainage-easement controls. The same job can be assessed differently in Wyong than in Gosford, so the first question is which former council area the property sits in.
Sandy ground doesn't mean easy drainage. Council's Woy Woy Floodplain Risk Management Study (DHI, final report 2022) describes the Woy Woy sand flats as flat and low-lying, on sand that soaks water in well until the shallow groundwater table is high, particularly at the foot of the escarpment around the Everglades catchment. It also notes the streets were laid out in a rough grid over the old sand dunes without following their natural drainage, leaving trapped low points and pit-and-pipe systems on very flat, sometimes adverse, grades trying to discharge to Brisbane Water.
Bureau of Meteorology records for Gosford (Narara Research Station), which closed in 2013, averaged 1328.3 mm a year over 96 years of data from 1916. February was the wettest month, and every month from January to June averaged 118 mm or more. As an inland Gosford station, it does not represent the northern end around Wyong. A long wet first half of the year is when a blocked or undersized system shows itself.
We work right across the Central Coast Council area, and none of it is far from home. Down on the Peninsula that's Woy Woy, Umina and Ettalong, and Woy Woy is where a yard can hold water for days after a wet week. Out through Kariong to Somersby and Peats Ridge is the hinterland. Around Gosford, Springfield, Erina, Green Point, Saratoga, Kincumber, Terrigal and Avoca Beach it's the everyday run: yards that pool, blocked stormwater lines, subfloors that never quite dry out, and old pipe that has done its time.
Up the north end we're just as often in Wyong, Tuggerah and Berkeley Vale, out at The Entrance, and around the lakes at Lake Haven, San Remo, Toukley and Budgewoi.
Not sure whether your street sits in the former Gosford or former Wyong area? Central Coast Council can tell you which part of its DCP applies to your lot. Whichever side of the line you're on, tell us the suburb.
Tell us what you need and where the property is.