October 2026 data · Northern Beaches · NSW
Seaforth house prices: median price and growth
- Median house
- $3.82m ▲ +1.9% in 12 months
- Median unit
- $2.23m ▲ +8.7% in 12 months
The median house price in Seaforth is $3.82m (October 2026), up 1.9% over 12 months. Units have a median of $2.23m, up 8.7% over 12 months. That puts Seaforth above the typical Northern Beaches suburb ($2.78m) and number 7 of the 12 suburbs around it.
Seaforth price changes
| Type | Median | 3 mo | 6 mo | 12 mo |
|---|---|---|---|---|
| House | $3.82m | ▲ +1.9% | ▲ +3.0% | ▲ +1.9% |
| Unit | $2.23m | ▼ −9.0% | ▼ −4.1% | ▲ +8.7% |
Changes compare the median with three, six and twelve months earlier. A dash means too few sales for a reliable figure. How these figures are worked out.
Seaforth compared with nearby suburbs
Suburbs within about 1 km of Seaforth, dearest house median first. Select a column heading to sort.
| House | Unit | |||||||
|---|---|---|---|---|---|---|---|---|
| Clontarf | $5.80m | ▲ +1.3% | ▼ −10.3% | ▲ +25.3% | – | – | – | – |
| Mosman | $5.26m | ▼ −1.1% | ▼ −7.6% | ▼ −10.6% | $1.37m | ▲ +1.3% | ▲ +3.2% | ▼ −4.7% |
| Northbridge | $5.01m | – | ▼ −2.8% | ▼ −5.6% | $1.23m | – | 0.0% | ▼ −8.8% |
| Castlecrag | $4.50m | ▼ −2.0% | ▼ −6.6% | ▼ −7.4% | – | – | – | – |
| Balgowlah Heights | $4.21m | ▼ −0.4% | ▼ −8.4% | ▼ −6.5% | $2.53m | – | – | – |
| Balgowlah | $3.90m | ▲ +5.4% | ▲ +6.1% | ▲ +13.9% | $1.68m | ▲ +9.8% | ▲ +10.9% | ▲ +17.1% |
| Seaforth | $3.82m | ▲ +1.9% | ▲ +3.0% | ▲ +1.9% | $2.23m | ▼ −9.0% | ▼ −4.1% | ▲ +8.7% |
| Castle Cove | $3.80m | ▼ −3.6% | ▼ −5.0% | ▼ −5.0% | – | – | – | – |
| North Balgowlah | $3.27m | ▼ −6.6% | ▼ −7.7% | ▼ −1.1% | $910k | – | – | – |
| Manly Vale | $2.84m | ▲ +0.3% | ▼ −2.0% | ▲ +3.4% | $1.05m | ▼ −3.1% | ▼ −4.5% | ▼ −4.1% |
| Killarney Heights | $2.78m | ▼ −0.7% | ▼ −0.7% | ▼ −2.5% | – | – | – | – |
| Allambie Heights | $2.65m | ▼ −3.8% | ▼ −5.5% | ▲ +0.8% | $1.16m | – | – | – |
Living in Seaforth
From the 2021 ABS Census: Seaforth against the Northern Beaches council area and NSW. Council and state percentages count all their residents; their medians are the middle suburb by population.
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| Figure | Seaforth | Northern Beaches (council) | NSW |
|---|---|---|---|
| People | |||
| Population | 7,384 | 263,542 | 8,072,118 |
| Median age | 42 | 41 | 39 |
| Families with children | 🔒 | 🔒 | 🔒 |
| Born overseas | 32.4% | 30.2% | 29.3% |
| Language other than English at home | 🔒 | 🔒 | 🔒 |
| Work and education | |||
| Median household income | $4,184/wk | $2,681/wk | $1,888/wk |
| Median personal income | 🔒 | 🔒 | 🔒 |
| Professionals and managers | 🔒 | 🔒 | 🔒 |
| Unemployment | 🔒 | 🔒 | 🔒 |
| Bachelor degree or higher | 🔒 | 🔒 | 🔒 |
| Completed Year 12 | 🔒 | 🔒 | 🔒 |
| Housing | |||
| Owned outright | 🔒 | 🔒 | 🔒 |
| Owned with a mortgage | 🔒 | 🔒 | 🔒 |
| Rented | 16.2% | 26.9% | 32.5% |
| Separate houses | 🔒 | 🔒 | 🔒 |
| Flats and apartments | 🔒 | 🔒 | 🔒 |
| Median weekly rent | 🔒 | 🔒 | 🔒 |
| Median mortgage repayment | 🔒 | 🔒 | 🔒 |
| Advantage | |||
| SEIFA advantage (IRSAD), Australian decile | 🔒 | 🔒 | 🔒 |
🔒 Age, occupation and ancestry breakdowns for Seaforth, its council and NSW
Source: ABS Census of Population and Housing 2021. More figures, maps and the 2016 Census are in Location Insights.
Crime in Seaforth
Recorded criminal incidents in the 12 months to June 2026, by offence category, against the 12 months before. Busiest categories first.
| Offence category | 12 months to June 2026 | 12 months before | Change |
|---|---|---|---|
| Theft | 56 | 59 | ▼ −3 |
| Intimidation, stalking and harassment | 17 | 10 | ▲ +7 |
| Assault | 13 | 24 | ▼ −11 |
| Malicious damage to property | 12 | 19 | ▼ −7 |
| Disorderly conduct | 12 | 8 | ▲ +4 |
Source: NSW Bureau of Crime Statistics and Research (BOCSAR), on ABS suburb boundaries. Every category and month since 1995 is in the Crime Explorer.
Common questions
What is the median house price in Seaforth?
The median house price in Seaforth was $3.82m in October 2026, up 1.9% on a year earlier. The typical Northern Beaches suburb median was $2.78m.
What is the median unit price in Seaforth?
The median unit price in Seaforth was $2.23m in October 2026, up 8.7% over 12 months.
Is Seaforth more expensive than nearby suburbs?
Of the 11 neighbouring suburbs with a median house price, 6 are dearer than Seaforth and 5 are cheaper or the same.
Where does this data come from?
Prices come from REA sales data for October 2026, all bedroom counts, refreshed monthly. Medians cover sales over the past 12 months; changes are shown only where at least 10 homes of that type sold.