Northern Beaches Council
Private building certifier in Clontarf
Clontarf is a harbourside suburb of family homes on Middle Harbour. Pools, decks and extensions tend to fight over the same garden space, so we review the full site before plans are fixed.
NSW 2093
Class 1 homes and Class 10 structures
Local rules
Harbourside homes in Clontarf
A long-loved harbour beach
The Dictionary of Sydney entry on Clontarf highlights its long beach, which looks over Middle Harbour from the north-east. From the early 1860s it was a pleasure ground that drew day trippers. The Spit Bridge opened in 1924 and was replaced in 1958, changing how people reached the area. Living near the public foreshore does not mean a private lot runs to the water.
Nearly all detached houses
The 2021 Census found 616 private dwellings and 1,746 residents. Separate houses made up 94.3% of occupied homes and attached homes 4.5%. The census counted zero flats. Because so many homes are houses with gardens, the balance between building and outdoor space really matters.
Scenic and site controls
Northern Beaches Council applies the Manly Development Control Plan here. Some land is mapped inside a scenic protection area along the foreshore. There, plans must show how roofs, materials and retained trees will appear from the harbour and from public land. A harbour view by itself will not place your lot on that map.
Typical work
Common projects and how they get approved
What owners build here
Common Class 1 and 10 work in Clontarf includes:
- Pools. The Manly DCP caps the pool and its paved surround at 30% of the site's total open space. There are separate boundary distances for the water line and the paved edge.
- Spas on decks. An engineer must confirm the deck or balcony can carry a full spa.
- Extensions and second storeys. Show how the remaining garden will be used, not just what is left over.
- Basement garages. A basement dug deeper than one metre under natural ground triggers a Site Stability Report, lodged with the development application.
Pool pumps and spa equipment also need placing with neighbours' noise in mind.
How approval usually works
Certain pools and additions can be approved by CDC, a quick approval a certifier grants against state standards. Scenic mapping, or another constraint on the lot, can rule that pathway out for your project. In that case council receives a development application, and a construction certificate follows before work begins.
Bring a detailed survey with existing levels, your planning certificate and any earlier approvals. Draw the open space areas separately so the 30% pool limit can be checked early. CertifiBuild confirms the controls on your land, maps out the approval route and carries out each stage inspection.
Our services
From approval to sign-off.
One certifier for your whole Clontarf job, from the first plan check to the occupation certificate.
Local questions
Questions we hear about this suburb.
No two lots in Clontarf are the same. Give us your address and we will check every map that affects it.
See the council pageHow big can my pool be in Clontarf?
Under the Manly development control plan (DCP), the pool plus its surrounding paving is capped at 30% of the open space on your lot. Separate boundary distances then apply to the water line and to the paved edge. With 94.3% of Clontarf homes being houses with gardens, pools often compete with decks and extensions for the same space. Have your designer mark each open space area clearly, which lets the 30% figure be measured early. Choose the pool shape after that, not before.
Can I install a spa on my existing Clontarf balcony?
Only if a structural engineer confirms the balcony can safely carry a spa full of water with people in it. Many Clontarf balconies and decks were never built for that load, so the engineer will look at the current condition and the supports, not just the design load. Beyond the structure, the assessment considers privacy for neighbours and noise from the pump and heater. Plan where that equipment sits early. Get the engineer’s report first, before ordering the spa.
Does a basement garage under my Clontarf home need special reports?
Yes, once the dig reaches deeper than a metre under the natural ground line. At that depth the Manly development control plan (DCP) wants a Site Stability Report lodged alongside the development application (DA). On Clontarf’s harbour slopes, the depth can change a lot across a single garage footprint. Get a detailed survey with existing levels and a cross section through the basement to confirm the depth before locking in the layout. Other mapped controls, such as the foreshore scenic area, may also apply.
Building in this suburb?
Send us the address first.
We check the local maps for your lot, confirm the approval path and quote in writing.