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This analysis uses Suburbs and Localities (SAL) boundaries, which can materially differ from Statistical Areas (SA2) even when sharing the same name.
SAL boundaries are defined by Australia Post and the Australian Bureau of Statistics to represent commonly-known suburb names used in postal addresses.
Statistical Areas (SA2) are designed for census data collection and may combine multiple suburbs or use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.
est. as @ -- *
2021 Census | -- people
Sales Activity
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Population
Seacombe Heights is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends
Based on analysis of ABS population updates for the broader area, and new addresses validated by AreaSearch, as of May 2026 the suburb of Seacombe Heights' population is estimated at around 1,579. This reflects an increase of 30 people since the 2021 Census, which reported a population of 1,549 people. The change is inferred from the resident population of 1,573, estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2025 and address validation since the Census date. This level of population equates to a density ratio of 1,879 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch. Population growth for the suburb was primarily driven by overseas migration that contributed approximately 65.0% of overall population gains during recent periods.
AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For any SA2 areas not covered by this data, and for years post-2032, the SA State Government's Regional/LGA projections by age category, released in 2023 and based on 2021 data, are adopted with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Considering the projected demographic shifts, a population increase just below the median of national areas is expected for the suburb, with an expected increase by 97 persons to 2041 based on aggregated SA2-level projections, reflecting an increase of 5.8% in total over the 16 years.
Frequently Asked Questions - Population
Development
Residential development activity is lower than average in Seacombe Heights according to AreaSearch's national comparison of local real estate markets
AreaSearch analysis of ABS building approval numbers shows Seacombe Heights averaged approximately one new dwelling approval per year over the past five financial years, totalling about six homes. In FY-26 so far, three approvals have been recorded. This averages to around 4.2 people moving to the area annually for each dwelling built between FY-21 and FY-25, indicating demand significantly outpaces supply.
New properties are constructed at an average expected cost of $475,000, suggesting a focus on premium segment dwellings. Compared to Greater Adelaide, Seacombe Heights has significantly less development activity, 89.0% below the regional average per person. This limited new supply generally supports stronger demand and values for established dwellings, though building activity has increased in recent years. The area's development level is also under the national average, suggesting its established nature and potential planning limitations. Recent building activity consists entirely of standalone homes, maintaining Seacombe Heights' traditional suburban character with a focus on family homes.
With around 1045 people per dwelling approval, the area reflects a highly mature market. According to AreaSearch's latest quarterly estimate, Seacombe Heights is expected to grow by approximately 91 residents through to 2041. If current development rates continue, housing supply may not keep pace with population growth, potentially increasing competition among buyers and supporting stronger price growth.
Frequently Asked Questions - Development
Development applications around Seacombe Heights
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| Lodged | Address | Description | Type | Distance | Status |
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SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.
Infrastructure
Seacombe Heights has emerging levels of nearby infrastructure activity, ranking in the 32ndth percentile nationally
Two infrastructure projects have been identified by AreaSearch as potentially impacting the area: Flagstaff Road Upgrade and Seaview High School Upgrade. Other notable projects include Southern Suburbs Residential Policy Code Amendment and Flinders Medical Centre Southern Redevelopment Stage 1 (Acute Services Building).
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INFRASTRUCTURE SEARCH
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Frequently Asked Questions - Infrastructure
Enabling Infrastructure for Hydrogen Production
A national program to coordinate and deploy the enabling infrastructure required to support large-scale renewable hydrogen production across Australia. Building on the 2024 National Hydrogen Strategy and the National Hydrogen Infrastructure Assessment (NHIA), the program aligns electricity transmission, water supply, transport corridors, port and storage infrastructure with Renewable Energy Zones and prospective hydrogen hubs (Bell Bay, Darwin, Eyre Peninsula, Gladstone, Latrobe Valley, Hunter Valley, Pilbara). Two key federal mechanisms underpin delivery. The Hydrogen Headstart program provides up to 4 billion AUD in long-term revenue support via production credits, with Round 2 (2 billion AUD administered by ARENA) opening for Expressions of Interest in October 2025 with EOIs closing 8 December 2025. The Hydrogen Production Tax Incentive (HPTI), legislated through the Future Made in Australia (Production Tax Credits and Other Measures) Act 2025 which received Royal Assent on 14 February 2025, provides an uncapped refundable tax offset of 2 AUD per kilogram of eligible renewable hydrogen for up to 10 years between 1 July 2027 and 30 June 2040 for projects reaching final investment decision by 2030. The HPTI is jointly administered by the ATO and Clean Energy Regulator and requires certification under the Guarantee of Origin scheme. Round 1 of Hydrogen Headstart shortlisted six projects representing more than 3.5 GW of electrolyser capacity, with 814 million AUD ultimately awarded.
Flinders Medical Centre Southern Redevelopment Stage 1 (Acute Services Building)
Stage 1 of the Southern Adelaide Local Health Network redevelopment, anchored by a new seven-storey Acute Services Building at the front of Flinders Medical Centre. The tower delivers 17,000 square metres of new built area plus 3,000 square metres of refurbishment, adding 98 clinical spaces. It will house two 32-bed adult inpatient units, an 18-bay Medical Day Unit, a 16-bed Intensive Care Unit with a dedicated CT scanner suite, four operating theatres with a 14-bay recovery area, a Day of Surgery Admissions area, a new Podiatry department, and a dedicated floor for the FMC Eye Surgery Clinic which integrates the network's ophthalmology services into a single facility (a first for South Australia's public health system). The new building will form the hospital's main entrance with a large lobby, retail outlet and undercover drop-off zone. The wider Stage 1 program also includes a 12-bed Psychiatric Intensive Care Unit at Margaret Tobin Centre (opening March 2026), 48 new beds at Noarlunga Hospital (opened November 2025), 32 beds across two wards at the Repat Health Precinct (opened 2024), and supporting upgrades to mortuary (completed October 2025), kitchen, sterilisation services and electrical infrastructure. More than 20 million dollars of new major medical equipment will be installed including advanced imaging, automated pharmacy dispensing cabinets and a new CT scanner. Designed by ARM Architecture with Silver Thomas Hanley, with Built Environs as Managing Contractor and Aurecon providing structural and civil engineering. The Acute Services Building is expected to open in early 2028.
SA Water Capital Work Delivery Contracts 2024-28
SA Water's record $3.3 billion capital delivery program for the 2024-28 regulatory period, covering water and wastewater infrastructure across South Australia. The program targets water main replacements, sewerage network upgrades, dam upgrades, water tank refurbishments, and treatment process upgrades across metropolitan and regional areas. A central $1.5 billion component supports the South Australian Premier's Housing Roadmap, expanding network capacity to unlock up to 40,000 new allotments, with major focus on Adelaide's northern growth corridors including Angle Vale, Riverlea, and Roseworthy. Six major framework partners (Fulton Hogan Utilities, John Holland and Guidera O'Connor JV, McConnell Dowell and Diona JV, BMD, Diona, and Leed Engineering and Construction) are delivering works across approximately 120 projects. In Year 1 (to June 2025), $681.6 million in capital was invested. The program runs to June 2028.
Adelaide Public Transport Capacity and Access
State-led program work to increase public transport capacity and access to, through and within central Adelaide. Current work is focused on the City Access Strategy (20-year movement plan for the CBD and North Adelaide) and the State Transport Strategy program, which together will shape options such as bus priority, interchange upgrades, tram and rail enhancements, and better first/last mile access.
SA Housing Trust Maintenance Contracts Review and Service Program
Statewide maintenance and service contracts for SA Housing Trust public housing properties, covering reactive maintenance, vacancy restoration and minor works across metropolitan and regional South Australia. The program is delivered by Spotless Facility Services, RTC Facilities Maintenance and Torrens Facility Management. A 2024 SA Government review examined payment, timeliness, dispute resolution and contract performance issues, and the government provided additional funding to accelerate maintenance and upgrades on vacant public housing homes.
Bulk Water Supply Security
Nationwide program led by the National Water Grid Authority to improve bulk water security and reliability for non-potable and productive uses. Activities include strategic planning, science and business cases, and funding of state and territory projects such as storages, pipelines, dam upgrades, recycled water and efficiency upgrades to build drought resilience and support regional communities, industry and the environment.
Adelaide Level Crossing Removal Planning Program
A joint Australian and South Australian Government program to conduct planning studies at priority at-grade level crossing locations across metropolitan Adelaide, and establish a ten-year Level Crossing Removal Program. Adelaide has 126 at-grade level crossings where boom gates can be closed for up to 25% of peak traffic periods. Priority sites under active planning include Cormack Road (Wingfield), Kings Road (Parafield), and Park Terrace (Salisbury). The program commenced in early 2022 and is expected to be completed by late 2026, with the first major removal project - Curtis Road, Munno Para - announced in May 2025 with a $250 million joint funding commitment and construction starting by 2027.
Seaview High School Upgrade
Facility upgrade delivering a new 2 storey multi purpose Creative Design building, a new single storey Performing Arts facility with associated performance spaces, and refurbishment of an existing building to provide contemporary STEM learning areas. Project value reported at $17.65 million. Architect: Flightpath Architects. Builder: Badge Constructions. Construction completed, with completion reported by industry sources at end of 2022.
Employment
AreaSearch analysis of employment trends sees Seacombe Heights performing better than 90% of local markets assessed across Australia
Seacombe Heights has an educated workforce with prominent representation in essential services sectors. The unemployment rate is 0.8% and there was a 4.5% increase in employment over the past year, according to AreaSearch's statistical area data aggregation as of December 2025. There are 907 residents employed, with an unemployment rate of 3.0%, lower than Greater Adelaide's 3.8%.
Workforce participation is high at 71.2% compared to Greater Adelaide's 66.0%. Census responses show that 11.8% of residents work from home, though Covid-19 lockdown impacts should be considered. Key industries for employment among residents are health care & social assistance, construction, and education & training. Health care & social assistance has a high representation with an employment share of 1.2 times the regional level, while professional & technical services show lower representation at 5.4% compared to the regional average of 7.3%.
The area appears to offer limited local employment opportunities based on Census working population vs resident population data. Between December 2024 and December 2025, employment levels increased by 4.5%, labour force increased by 4.2%, and unemployment fell by 0.3 percentage points, according to AreaSearch analysis of SALM and ABS data aggregated from broader statistical areas. Greater Adelaide recorded similar trends with employment growth of 4.2%, labour force growth of 3.9%, and a fall in unemployment by 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 project national employment to expand by 6.6% over five years and 13.7% over ten years, with varying growth rates between industry sectors. Applying these projections to Seacombe Heights' employment mix suggests local employment should increase by 6.8% over five years and 14.2% over ten years, though this is a simple weighting extrapolation for illustrative purposes and does not account for localised population projections.
Frequently Asked Questions - Employment
Income
The area's income profile falls below national averages based on AreaSearch analysis
The suburb of Seacombe Heights has a median taxpayer income of $52,206 and an average income of $66,922, according to the latest postcode level ATO data aggregated by AreaSearch for the financial year 2023. This is comparable to national averages, contrasting with Greater Adelaide's median income of $54,808 and average income of $66,852. Based on Wage Price Index growth of 10.17% since the financial year 2023, estimated incomes as of March 2026 would be approximately $57,515 (median) and $73,728 (average). According to 2021 Census figures, household, family and personal incomes in Seacombe Heights are at the 56th percentile nationally. Income distribution shows that 37.7% of locals (595 people) fall into the $1,500 - 2,999 category, similar to the broader area where 31.8% occupy this range. After housing expenses, 86.6% of income remains for other expenses. The suburb's SEIFA income ranking places it in the 6th decile.
Frequently Asked Questions - Income
Housing
Seacombe Heights is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership
Seacombe Heights' dwellings, as per the latest Census, consisted of 97.7% houses and 2.3% other dwellings (semi-detached, apartments, 'other'). In contrast, Adelaide metro had 75.2% houses and 24.9% other dwellings. Home ownership in Seacombe Heights was 38.1%, with mortgaged dwellings at 49.0% and rented ones at 12.8%. The median monthly mortgage repayment was $1,850, higher than Adelaide metro's $1,562. Median weekly rent was $380 in Seacombe Heights, compared to Adelaide metro's $320. Nationally, Seacombe Heights' mortgage repayments were lower at $1,850 versus Australia's average of $1,863, while rents were higher at $380 against the national figure of $375.
Frequently Asked Questions - Housing
Household Composition
Seacombe Heights features high concentrations of family households, with a higher-than-average median household size
Family households account for 79.8% of all households, including 36.7% couples with children, 32.5% couples without children, and 8.7% single parent families. Non-family households constitute the remaining 20.2%, with lone person households at 18.0% and group households comprising 3.1%. The median household size is 2.6 people, which is larger than the Greater Adelaide average of 2.5.
Frequently Asked Questions - Households
Local Schools & Education
Educational attainment in Seacombe Heights aligns closely with national averages, showing typical qualification patterns and performance metrics
University qualifications are prevalent among residents aged 15 and above in Seacombe Heights, with 30.1% holding such credentials compared to the South Australian average of 25.7%. Bachelor degrees are the most common at 21.0%, followed by postgraduate qualifications (6.9%) and graduate diplomas (2.2%). Trade and technical skills are also prominent, with 33.8% of residents aged 15 and above having vocational credentials - advanced diplomas (10.2%) and certificates (23.6%).
Educational participation is high in Seacombe Heights, with 28.1% of residents currently enrolled in formal education. This includes 9.7% in primary education, 7.1% in secondary education, and 6.2% pursuing tertiary education.
Frequently Asked Questions - Education
Schools Detail
Nearby Services & Amenities
Transport
Transport servicing is moderate compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility
Transport analysis shows ten active public transport stops in Seacombe Heights, serving a mix of bus routes. These stops are covered by eight different routes, offering 444 weekly passenger trips combined. Transport access is rated good, with residents typically located 269 meters from the nearest stop. Most residents commute outward due to the area's residential nature. Cars remain the primary mode of transport at 90%, with trains used by 6%. Vehicle ownership averages 1.7 per dwelling, higher than the regional average.
According to the 2021 Census, only 11.8% of residents work from home, which may reflect COVID-19 conditions. Service frequency averages 63 trips per day across all routes, equating to approximately 44 weekly trips per individual stop.
Frequently Asked Questions - Transport
Transport Stops Detail
Health
Seacombe Heights's residents are extremely healthy with both young and old age cohorts seeing low prevalence of common health conditions
Analysis of health metrics indicates robust performance across Seacombe Heights, as per AreaSearch's evaluation of mortality rates and chronic condition prevalence.
Both younger and older age groups exhibit low prevalence of common health conditions. Private health cover stands at approximately 53% of the total population (~843 people), slightly higher than the average SA2 area. Mental health issues and arthritis are the most prevalent medical conditions, affecting 8.2% and 7.2% of residents respectively. A significant majority, 72.0%, report being completely free from medical ailments, compared to 67.9% across Greater Adelaide. Working-age residents display notably low chronic condition prevalence. The area has 19.1% of residents aged 65 and over (301 people). Health outcomes among seniors are particularly strong, aligning with national rankings for the general population.
Frequently Asked Questions - Health
Cultural Diversity
The level of cultural diversity witnessed in Seacombe Heights was found to be above average when compared nationally for a number of language and cultural background related metrics
Seacombe Heights had a higher cultural diversity than most local areas, with 28.8% of its population born overseas and 19.7% speaking a language other than English at home. Christianity was the predominant religion in Seacombe Heights, accounting for 37.6% of the population. However, the 'Other' religious category showed a slight overrepresentation, comprising 1.4% compared to 1.8% across Greater Adelaide.
In terms of ancestry, the top three groups were English (29.7%), Australian (22.3%), and Scottish (7.4%). Notably, Hungarian was overrepresented at 0.5%, Polish at 1.2%, and German at 5.4%.
Frequently Asked Questions - Diversity
Age
Seacombe Heights's population is slightly older than the national pattern
The median age in Seacombe Heights is 40 years, similar to Greater Adelaide's average of 39 years but somewhat older than Australia's median age of 38 years. The 45-54 age group comprises 14.2% of the population, higher than Greater Adelaide's percentage, while the 25-34 cohort makes up 11.8%, lower than Greater Adelaide's figure. Post-2021 Census data shows that the 15 to 24 age group has increased from 10.7% to 12.1%, and the 75 to 84 cohort has grown from 7.6% to 8.7%. Conversely, the 65 to 74 age group has decreased from 9.7% to 8.3%. Population forecasts for 2041 indicate significant demographic changes in Seacombe Heights. Notably, the 85+ age group is expected to grow by 126%, reaching 75 people from a current total of 33. Conversely, the 0 to 4 and 35 to 44 age groups are projected to experience population declines.