Mortar gone, soil washing through the joints, a face leaning out toward the water: that's what we fix. We repoint, refill scoured voids, reset rock, rebuild failed sections and get the drainage behind it right. Tell us whether it faces the ocean, a lagoon, Brisbane Water or Tuggerah Lakes, the wall type and length, and send low-tide photos.
Get a Quote →The Central Coast has hundreds of kilometres of waterfront — Brisbane Water, Tuggerah Lakes, the ocean beaches, and the tidal creeks that feed them. Seawalls on these frontages take a beating: tidal cycles, wave action, storm surges, salt corrosion, tree roots, and the relentless erosion of the soil behind the wall.
Most older seawalls on the Coast were built with sandstone blocks, timber sleepers or unreinforced concrete — materials that deteriorate over decades of saltwater exposure. When the wall starts to fail, the soil behind it washes through the gaps, the backfill collapses, and the erosion accelerates. Left alone, you lose usable land, risk damage to structures built near the waterfront, and can end up with a council compliance notice.
Patching, repointing, steel reinforcement and concrete refacing of existing seawalls that are still structurally sound but showing wear, cracks or mortar loss.
Demolition of the failed wall and construction of a new engineered seawall — concrete, steel sheet pile, rock revetment or interlocking block systems designed for the site conditions.
Placement of large rock armour in front of or instead of a vertical wall — absorbs wave energy and protects the shoreline. Common on exposed Brisbane Water and ocean frontages.
Most waterfront works require approval from Central Coast Council and NSW Crown Lands. Marine contractors handle the application process, engineering reports and environmental assessments.
A seawall repair on the Central Coast starts at low tide, at the toe. We look for a base that has been undercut, joints where the soil behind has washed out, and any sign the wall has moved: a lean, a bulge, a corner that has dropped. If the wall is still standing square, the job is repointing the joints, packing out the scoured voids behind the face, resetting rock that has slumped and putting drainage through the wall so water can get out without taking the backfill with it. If a section has gone, we take it down to sound material and rebuild it for what it faces.
What the wall faces decides the design, and on the Central Coast it decides which rules apply too. Central Coast Council's Open Coast Coastal Management Program (2026) covers only the ocean coast from Killcare to Budgewoi Beach. Tuggerah Lakes and the Wamberal, Terrigal, Avoca and Cockrone lagoons have their own programs, and the Broken Bay shore at Umina Beach, Pearl Beach and Patonga falls under the Hawkesbury Nepean program. A sandstone block wall on Brisbane Water at Saratoga takes tide and wind chop. The same wall at Wamberal takes ocean swell, and that changes the toe depth, the rock in front of it and the paperwork.
On the ocean side, the program puts numbers on the risk. It counts 72 private buildings and 44,490 square metres of private land at Terrigal–Wamberal at immediate risk from beach erosion, and 34 private buildings and 27,285 square metres at The Entrance and The Entrance North, around Hutton Road, Hargraves Street and Curtis Parade. The same program says Council is not obliged to protect private property from erosion, but must consider owners' development applications for coastal protection works. On those beaches the wall in front of your place is yours to keep up.
Wamberal has a rulebook of its own. Council's Wamberal Beach Terminal Protection Structure Engineering Design Requirements (Manly Hydraulics Laboratory report MHL2872, September 2022) set a minimum initial design life of 50 years, certified by the design engineer, and their concept design conditions include an offshore significant wave height of 8.7 metres for the 100-year event. Those figures are written for Wamberal Beach, not for a Brisbane Water or lake frontage. A rebuild that is a plain job on Brisbane Water or the lakes is a designed structure at Wamberal, assessed against that standard. That is why we ask what your wall faces before anything else. The toe depth, rock size and drainage we put in follow from the water in front of the wall, not from a standard drawing.
Enquiries are welcome from waterfront properties on the ocean coast at Killcare, MacMasters Beach, Copacabana, Avoca Beach, Terrigal, Wamberal and The Entrance North; on Brisbane Water at Ettalong, Booker Bay, Woy Woy, St Huberts Island, Davistown, Saratoga, Kincumber, Gosford, Point Clare, Tascott and Phegans Bay; on Tuggerah Lakes at The Entrance, Long Jetty, Chittaway Bay, Canton Beach, Toukley and Budgewoi; and on the Broken Bay shore at Umina Beach, Pearl Beach and Patonga. Give your suburb and say what the wall faces, because the coastal program that applies changes with the frontage.
Tell us what you need and where the property is.