Clontarf, NSW 2093

Leafy, quiet harbourside peninsula suburb on Middle Harbour, roughly 13 km north-east of the Sydney CBD and just 0.8 km² — one of the smallest and most tightly-held suburbs on the Northern Beaches. At the 2021 census it had just 1,746 residents with a median age of 47; the median household income of $4,609 per week was nearly triple the national median and the median monthly mortgage was $5,317, signalling an affluent, older, family-oriented population. Estate agents and local guides describe Clontarf as prestige harbourside living at its most understated: sandy Clontarf Beach and its reserve anchor the suburb, housing is almost entirely detached family homes on quiet streets, and buyers come for Middle Harbour water views and the calm, low-key atmosphere minutes from Manly (Madison Agency; UCruise Sydney).

At a Glance

Transport

Public transport is bus-based only — Clontarf, like the rest of the Northern Beaches peninsula, has no railway station, light rail or ferry wharf. Bus stops sit on Clontarf Street near the suburb's northern edge and along Sydney Road at the Seaforth/Balgowlah boundary (e.g. stops such as Urunga St at Clontarf St, about an 8-minute walk from lower Clontarf homes), where city express X services such as the 172X (Warringah Mall to Wynyard via the Spit Bridge) and other cross-harbour buses stop on their way into the city. From the Spit Bridge at the suburb's western tip there are buses to the City (Wynyard), North Sydney, Chatswood, the Northern Beaches and Manly (Bondi to Manly Walk guide). rent.com.au classifies Clontarf as car-dependent, and driving to the CBD means crossing the Spit Bridge, the peninsula's notorious peak-hour pinch point.

Schools

There is no school inside Clontarf itself — the suburb's 0.8 km² is essentially residential streets and foreshore, and no NSW government or Catholic campus operates within it. Local primary-age children attend Seaforth Public School, the NSW government K–6 school in the immediately adjoining suburb of Seaforth, which draws Clontarf families (NSW Department of Education via Seaforth Public School; Manly Observer catchment coverage of the Seaforth PS intake). Independent and Catholic options are a short drive away in Manly, Balgowlah and Seaforth (Manly Observer).

Shopping & Amenities

Clontarf has no shopping centre — everyday retail is a small cluster of local services and cafes, with the suburb's anchor amenity being Clontarf Reserve's cafe, playground and picnic areas on the beachfront. For groceries and a wider cafe strip residents head up to the Seaforth shops on Sydney Road or into Manly (about 5 minutes' drive), which offers the Corso, supermarkets and the Manly Wharf precinct (Stickybeak suburb amenities; Madison Agency).

Parks & Outdoors

Clontarf Beach is a large sandy foreland on Middle Harbour about 5 km from the Heads, with a family-friendly playground and a protected swimming enclosure — calm, wave-free harbour swimming popular with young families. Clontarf Reserve, on the Middle Harbour foreshore off Sandy Bay Road, has a cafe, BBQs, picnic tables, a playground and a dog off-leash area. Sandy Bay, Castle Rock and Grotto Point are the suburb's other landmarks, and the Spit Bridge to Manly scenic walkway hugs the Clontarf foreshore, giving residents direct access to the bushland edges of Sydney Harbour National Park.

Property Market

The median house price in Clontarf was around ~$4.6M per realestate.com.au (median house price of $4,600,000 based on 23 sales over the past 12 months, retrieved Sep 2026, down ~5% year-on-year); with only about two dozen house sales a year, medians swing wildly between trackers — CoreLogic data via YIP put the house median at $6,215,000 (24 sales, +33.3% annual growth) — but every source agrees Clontarf sits in the $4M+ harbourfront prestige bracket the site's own research anticipated (realestate.com.au; YIP) (mid-2026). See our full Sydney property price map for how the suburb compares across the city. Scarcity drives the market: Clontarf is a 0.8 km² harbourside peninsula with 1,746 residents (2021) and almost no new supply — median household income of $4,609/week (nearly 3x the national median) and median monthly mortgage repayments of $5,317 reflect a wealthy, largely mortgage-funded population. Agents list Clontarf among the Northern Beaches' most expensive suburbs, with prices set by Middle Harbour water frontage and views rather than by volume.

New Developments

Deliberately low-key: with almost no vacant land and a foreshore that is heavily constrained, Clontarf has seen no apartment towers or major residential projects — change comes mainly through premium knockdown-and-rebuilds of older houses, and through council-led recreation upgrades of the foreshore such as the new playground at Clontarf Reserve and maintenance of the beach's swimming enclosure. The suburb's historical claim to fame is the 1868 attempt on Prince Alfred's life at Clontarf, now a footnote on a placid, tightly-held residential peninsula.

Jobs & Local Economy

Employment is largely white-collar and commuter-based: Clontarf's residents most commonly work as professionals, with the suburb's high 2021 household incomes ($4,609/week median) pointing to CBD and North Shore professional jobs plus local Manly-economy roles. There is no significant employment base inside the suburb itself — local work is limited to the beachfront cafe/retail cluster, with Northern Beaches Council and Manly's retail and hospitality sectors the nearby employers, and many residents commuting to the Sydney CBD via the Spit Bridge or the Manly ferry.

Nearby Suburbs

Seaforth, Balgowlah, Balgowlah Heights, Manly, Mosman, North Balgowlah

Sources & method

Researched 4 September 2026 from named public sources — census and government records, transport authorities, council and planning documents — plus published sales data. Where sources disagree on a figure, the guide says so rather than picking one.

Sources cited in this guide:

• Wikipedia — Clontarf
• Transport for NSW
• NSW Government

Corrections are welcome — if something here is out of date or wrong, tell us and we will fix it.

Back to all Sydney suburb guides.