New Collaroy Seawall Underway
In mid-2021, construction began on a controversial 13 metre high by 100 metre long seawall at Collaroy on Sydney's Northern Beaches. The seawall spans the ten properties bound by Stuart Street and Wetherill Street.
When the wall was finished, one of those property owners, Bob Orth, told the Northern Beaches Review the seawall should inspire others to do likewise.
"Once this is up it'll be a momentum for others to do it too," said Orth.
Less than a year after the wall was finished Orth's prediction is coming to pass.
In May, a Development Application was approved for the next ten properties stretching south of Stuart Street to Ramsay Street, and yesterday work began on the wall.
The new wall will be built by Horton Coastal Engineering, who also built the original wall, and it'll match its dimensions and appearance. The cost of the wall is to be shared between Federal Goverment (10%), State Government (10%), and land owners (80%).
The delay in getting this section of wall built was reportedly caused by getting all home owners to pay their share. If one owner didn't want to pay then the whole scheme couldn't continue. Since 2016, two properties have been sold and bought.
Though costly, a seawall would undoubtedly add to the property values. The beach in front will come and go, however the properties behind the seawall are now protected, catastrophic failure notwithstanding.
When finished, the engineers foresee a dune system establishing itself in front of the wall which they'll plant with coastal wattle, banksia, and native rosemary.
However, ongoing sand recycling from Narrabeen Lagoon and sand nourishment from suitable building sites are both "strongly supported".