Building approvals, live development applications and major projects across the
Onkaparinga statistical area — covering Onkaparinga, Mitcham and Marion.
SA3 40304Greater Adelaide186,744 residents18 statistical areas
1 Proposed630applications in assessmentLeading · to August 2026See applications ↓
2 Approved1,278dwellings approved in 2024-25, or 0.58 per 100 existing dwellings a yearOfficial · ABS to June 2026See approvals ↓
3 Building27major projects committed or under construction, 12 of them already on siteForward · completions to 2030+See projects ↓
4 Delivered2,182new addresses verified since the 2021 Census, up 2.9% on the existing baseActual · to June 2026Where it landed ↓
In the 2024-25 financial year the ABS recorded 1,278 dwelling approvals across Onkaparinga. Right now, 630 development applications are before the 3 councils covering the area. AreaSearch tracks 27 major projects here that are committed or under construction, the largest being Sellicks Beach Growth Area Joint Amendment at an estimated $850m. On the ground, 2,182 new addresses have been verified since the 2021 Census — growth of 2.9% on the existing address base.
These four figures are deliberately not added together. An application, an
approval and a project under construction are often the same building at three points in its life,
measured by three different bodies with three different lags. Read them as a sequence, not a total.
ApprovedBuilding Approvals in Onkaparinga
What councils and certifiers have formally
permitted — the ABS series, published about four months in arrears.
Approvals are running at 0.58 per 100 existing dwellings a year, below the South Australia rate of 0.78. The mix is genuinely split — 67% of recent approvals are detached houses and 33% are attached or higher-density dwellings. That is a clear shift toward density — the five-year average is 80% houses. Detached houses make up 89% of the homes already standing here but only 80% of the past five years of approvals, so the area is densifying. The average approved dwelling is valued at $342,000 in construction cost.
For its size, Onkaparinga is adding 0.58 dwellings a year per 100 existing homes — below the South Australia rate of 0.78 and the national rate of 0.71. That is about 4.9 approvals a year for every 1,000 residents. Building intensity has fallen by about 24% across the published series.
Measured against people rather than housing stock, Onkaparinga is approving 4.75 dwellings a year per 1,000 residents — below the South Australia rate of 7.57. The two rate views differ by household size, which here averages 2.6 people per home. Housing the projection to 2041 would need about 2.41 per 1,000 residents a year.
Dwelling approvals a year per 100 existing
homes, with South Australia and Australia for comparison. This is the
same activity as the totals view, divided by the size of the area — which is the only
fair way to compare a large SA3 with a small one.
Dwelling approvals a year per 1,000
residents, each year divided by that year’s estimated resident
population (ABS ERP at 30 June), not by today’s — which matters most in fast-growing
areas, where a fixed denominator can understate the early years by half. The most recent periods use the latest published ERP, as the population series runs a year behind approvals. Read it alongside the per-100-homes view: the two differ wherever household size does.
Dwelling units approved each financial year. The dashed line is the five-year average of 918.
How intensively is it building?
Dwelling approvals a year per 100 existing dwellings.
Onkaparinga0.58
South Australia0.78
Australia0.71
What is here, and what is coming
Detached houses as a share of existing homes,
against the share of recent approvals.
Existing homes (2021 Census)89%
Approved, last 5 years80%
Approved, latest year67%
Detached housesApartments, townhouses & other
Approvals mix by year
Share of each year’s approvals.
2022
2023
2024
2025
2024-25
$482m
Residential work approved
2024-25
$286m
Commercial work approved
construction cost
$342,000
Average value per approved dwelling
last two years
177
Residents per approval
Supply & DemandIs Onkaparinga Building Enough Homes?
The same approvals, measured against the population
they have to house.
Onkaparinga approves about 4.9 new dwellings a year for every 1,000 residents. Since the 2021 Census it has added 10,211 residents but only 2,182 new addresses — about 4.7 extra people for every home built, against an average household of 2.6. On those numbers supply has not kept pace with growth. Housing the population projected for 2041 implies roughly 450 new dwellings a year from here, which puts the recent approval rate of 918 a year comfortably ahead of what the projection needs.
Growth against supply since the Census
People added for every new address verified,
against the size of an average local household.
People added per new home4.7
Average household size2.6
A bar longer than the household average means
the area gained more residents than its new housing could hold, and the extra had to be
absorbed by existing homes.
Approval rate against projected need
Dwellings a year: what is currently being
approved, against what the 2041 population projection implies.
Approved (5-yr average)918
Implied need to 2041450
Implied need assumes the average household stays
at today’s 2.6 people. Approvals are not
completions, and not every approval is built.
What is being asked for right now — applications
collected from council planning portals, before any of it reaches the ABS series above.
AreaSearch tracks applications of material scale; routine minor works such as signage and
fencing changes are not carried, so these are not counts of every application lodged. 109
of them carry an AreaSearch analyst assessment — look for the
Analysed marker in the search below.
AreaSearch tracks 1,768 development applications of material scale lodged with councils across Onkaparinga, the most recent in August 2026. 630 of them are still in assessment. The most common types in the queue are multi-residential, retail and industrial. Live applications account for about 92 proposed dwellings.
Number of applications by development type. This is the clearest
single picture of what kind of place Onkaparinga is being asked to become. Councils in
South Australia do not publish an estimated cost of works in
their planning feeds, so applications here are counted rather than valued. A further 20 applications sit across
3 smaller categories,
too few to plot.
Where the applications stand
As reported by the council. Highlighted rows are
applications still in assessment.
Decision Made919
Under Assessment820
On Exhibition4
194 applications are still marked under
assessment but were lodged more than
18 months ago. Councils often leave determined or
abandoned applications open in their feeds, so
they are counted here but excluded
from the live queue above.
A further 25 applications carry no status in the council feed.
By local government area
Applications on record within each council area that
overlaps Onkaparinga. This counts applications inside this
statistical area only — it is not a total for the council.
Onkaparinga1,749
Recent applications in Onkaparinga
By the number of dwellings proposed, as lodged. Figures are the applicant’s own and are not verified by AreaSearch.
Two-storey residential flat building with six affordable housing unitsMorphett Vale - West · Under Assessment · lodged Jun 2026
6 dwellings
Multi-unit residential development with dwellings and garagesChristies Beach · Under Assessment · lodged Jun 2026
5 dwellings
Construction of five single-storey affordable housing dwellingsChristie Downs · Under Assessment · lodged Jun 2026
5 dwellings
Construction of five two-storey townhouses with carports and visitor parking.Christies Beach · Under Assessment · lodged Nov 2025
5 dwellings
Four two-storey group dwellings and community title land divisionChristies Beach · Under Assessment · lodged Jun 2026
4 dwellings
Construction of three single-storey detached dwellings in a terrace arrangement and removal of two significant treesMorphett Vale - West · Under Assessment · lodged Jun 2026
3 dwellings
Construction of three detached two-storey dwellings in a terrace arrangementSeaford Rise - Moana · Under Assessment · lodged Jun 2026
3 dwellings
Three two-storey row dwellings and removal of two treesSeaford - Seaford Meadows · Under Assessment · lodged Jun 2026
3 dwellings
BuildingFORWARDMajor Projects & Infrastructure in Onkaparinga
What is funded and moving — the projects large enough
to change how Onkaparinga works, ranked by committed value and how close
they are to delivery.
AreaSearch tracks 27 current projects across Onkaparinga. The largest is Sellicks Beach Growth Area Joint Amendment at an estimated $850m, due by 2029. That breaks down as 12 under construction, 5 approved and awaiting a start and 10 still in planning. The pipeline is weighted toward communities, precincts & urban renewal, residential development and environmental & disaster management.
Under construction$450mby 2026
Flinders Medical Centre Acute Services Building
New $400-500M Acute Services Building delivering 98 additional clinical spaces, 160 new beds, four new operating theatres, a 16-bed intensive care unit, and an expanded emergency department. Part of the major…
A major master planned residential development rezoning approximately 134 hectares to facilitate roughly 1,700 new homes. The project includes a new neighborhood activity centre with a main street focal point…
A 42-hectare master-planned residential community featuring 644 allotments with land sizes up to 540m2. The development includes 15% affordable and social housing outcomes, extensive green spaces including a…
Aldinga - A New CommunityIn planning · Communities, Precincts & Urban Renewal · by 2030 · Aldinga
$400m
Willunga Basin Water Infrastructure ExpansionUnder construction · Environmental & Disaster Management · by 2026 · McLaren Vale
$25m
Noarlunga Hospital Mental Health ExpansionApproved · Health & Medical · by 2027 · Christies Beach
$74m
Port Stanvac PrecinctIn planning · Communities, Precincts & Urban Renewal · by 2035 · Lonsdale
$508m
The Green at WoodcroftUnder construction · Residential Development · by 2026 · Woodcroft
$18m
Aldinga Rail Extension Corridor PreservationIn planning · Transport & Logistics · by 2035 · Aldinga
$300m
Urban Creek Resilience and Recovery Project - Sauerbier Creek and Homestead CreekUnder construction · Environmental & Disaster Management · by 2029 · Aberfoyle Park
$2m
Woodcroft College Campus ExpansionsIn planning · Education & Training · by 2026 · Morphett Vale - East
$25m
12 further projects in
Onkaparinga are not listed here.
Combined values on this page exclude
1 record that appear to be
separate stages of a project already counted. Both are still listed
above with their own values.
Denotes AI-based impression for illustrative purposes only, not to be taken as
definitive under any circumstances. Please follow links and conduct other
investigations from the project’s source for actual imagery. Developers and
project owners wishing us to use original imagery please Contact
Us and we will do so.
Beyond 2030:
a further $1.86bn across
5 projects with completion dates further out — mostly precinct-scale programs whose dates are
indicative. Kept out of the chart so the years you can act on stay readable.
Estimated value of tracked projects by the year they are due to
complete, stacked by how certain they are. The dark band is money already being spent;
the pale band is still an intention. Estimates are indicative and mix infrastructure
cost with whole-of-precinct development value, so read the shape rather than the totals.
Approvals PipelineDevelopment Applications in Onkaparinga
Development applications around
Onkaparinga
Development approvals is a new addition to AreaSearch.
We’re actively expanding council coverage and refining the dataset — details and statuses for some councils may be partial. Check back regularly for the latest pipeline.
Applications
—
In the local catchment
Est. Value
—
Where disclosed
Under Assessment
—
Awaiting determination
Determined
—
Approved or decided
Approvals pipelineStatus, location, timing and project scale
Loading development applications…
Lodged
Address
Description
Type
Distance
Status
SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.
ProfessionalPRODevelopment Map for Onkaparinga
Applications and major projects plotted where
they are actually proposed, with the
54 projects AreaSearch tracks here on their own tab — filterable by type, delivery stage,
area and committed value. To search every application on record rather
than this sample, use the section above.
DistributionWhere Development Is Happening in Onkaparinga
Onkaparinga covers 18 statistical areas. Follow any of them through for a full profile of population, housing, sales and amenity at local scale.
Map builder
Each area below opens a map builder on its own page — a tool for
putting a map and a table into a report. Pick the place types you want plotted
(schools, supermarkets, medical, child care, transport and the rest of what
AreaSearch holds), add development applications as their own layer, drop your own
points, then recolour, renumber and export the result as a table or CSV.
A this area only toggle clips everything to the boundary you are looking at.
Searches are charged against your credit balance — 1 credit per 40
results from AreaSearch data — and setting filters costs nothing until
you search. The builder works on one suburb-sized area at a time, which is why it
opens per area rather than across the whole of
Onkaparinga.
Onkaparinga spans 3 local government areas — Onkaparinga, Mitcham and Marion. Applications here are assessed by whichever of those councils the site falls within. AreaSearch publishes development
figures at ABS statistical boundaries rather than council boundaries. That is deliberate: the ABS
issues a separate official building-approvals series for local government areas, and totals
built up from statistical areas would not match it. Reporting at SA3 keeps every figure on this page
reconcilable with the published ABS series.
Local government area
Share of Onkaparinga
Applications on record
Register read to
Onkaparinga
99% of residents
1,749
August 2026
Mitcham
0.7% of residents
6
March 2026
Marion
0.0% of residents
13
March 2023
CompareNearby Development Hubs
The same view of building approvals, applications and
major projects for areas neighbouring Onkaparinga.
Collected from council planning portals. The
earliest signal available, but the least certain: many applications are amended,
withdrawn or refused, values are the applicant’s own estimate, and coverage
varies by council. This is a curated set, not the full council feed:
AreaSearch carries applications of material scale and does not track routine minor
works such as signage, fencing or small alterations, so the counts here are lower
than a council’s own total lodgement figure and should not be compared with it. Applications still shown as under assessment more than
18 months after lodgement are reported separately
and kept out of the live-queue figures: the age profile of open applications is
sharply split between a genuine queue under a year old and a long tail of records
councils never closed. Not every state publishes a cost of works — Queensland,
the Northern Territory and the ACT publish none at all — so on those pages
applications are counted rather than valued and no dollar figure is shown
rather than a partial one. Treated here as a snapshot of the current queue only —
AreaSearch does not chart application counts over time, because the history
reflects when each portal was collected rather than when development happened.
Approved — ABS building approvals
The official series, aggregated to SA3 from
ABS building approvals data, currently published to June 2026.
Counts dwelling units approved, not buildings and not completions. The most recent
financial year is annualised from nine months of data wherever it appears and is
labelled as such.
Building — major projects
Projects tracked individually by AreaSearch
from Infrastructure Australia, state infrastructure agencies, developer disclosures
and council records. Values are estimates and delivery dates are targets. Ranked on
this page by committed value and delivery stage rather than by distance.
Delivered — verified new addresses
New residential addresses verified in the national
address register since the 2021 Census. This is the closest available measure of what has
actually been built, though address creation can lead occupation and lags
construction. It is not a completions count.
Boundaries
Onkaparinga is Statistical Area Level 3 40304 in the ABS Australian Statistical Geography Standard (2021 edition), made up of 18 Statistical Areas Level 2.
It has an estimated 186,744 residents, +5.8% since the 2021 Census.
Currency
Measure
Source
To
Dwelling approvals, five-year average
ABS / AreaSearch
June 2026
House share of approvals
ABS / AreaSearch
June 2026
Residents per approval
ABS / AreaSearch
June 2026
Value per approved dwelling
ABS / AreaSearch
June 2026
Commercial work approved
ABS / AreaSearch
June 2026
Verified new addresses since the Census
Address register / AreaSearch
May 2026
Development applications
Council planning portals
August 2026
Major projects
Infrastructure Australia / state agencies / AreaSearch
Ongoing
Figures on this page are read live from the
AreaSearch database each time it loads, so they update as soon as a source does.
Development in Onkaparinga — common questions
How many new dwellings were approved in Onkaparinga?
The ABS recorded 1,278 dwelling approvals across Onkaparinga in the 2024-25 financial year, against a five-year average of 918 a year.
How many development applications are lodged in Onkaparinga?
AreaSearch tracks 1,768 development applications of material scale across Onkaparinga — routine minor works such as signage and fencing are not included, so this is not a count of every application lodged, of which 630 remain in assessment. Applications are assessed within the Onkaparinga, Mitcham and Marion local government areas. The most recent application in our data was lodged in August 2026.
What major projects are planned for Onkaparinga?
AreaSearch tracks 27 current major projects in Onkaparinga, 12 of them under construction. The largest include Flinders Medical Centre Acute Services Building, Sellicks Beach Growth Area Joint Amendment and Sunset Residential Development.
Which council covers Onkaparinga?
Onkaparinga is an ABS Statistical Area Level 3. It is covered by parts of 3 local government areas — Onkaparinga, Mitcham and Marion. AreaSearch publishes development figures at ABS statistical boundaries rather than council boundaries, so they reconcile with the official ABS series.
Is Onkaparinga growing faster than the rest of South Australia?
On development approvals, Onkaparinga is adding new dwellings more slowly than South Australia as a whole — 0.58 approvals per 100 existing dwellings a year against the state figure of 0.78.
How current is this development data?
ABS building approvals are published with a lag of roughly four months; this page carries the series to June 2026. Development applications are collected from council planning portals and refresh continuously, with the most recent application here lodged in August 2026. Major project records are reviewed on an ongoing basis. Each section carries its own currency label so the four are never confused.
Development data is provided for general information.
Estimated values, dwelling counts and delivery dates come from the lodging or delivering party and
are not independently verified by AreaSearch. Confirm anything material with the relevant council
or agency before relying on it.
Denotes AI-based impression for illustrative purposes only, not to be taken as
definitive under any circumstances. Please follow links and conduct other
investigations from the project’s source for actual imagery. Developers and
project owners wishing us to use original imagery please Contact
Us and we will do so.