Mount Barker Infrastructure Projects, SA

Mount Barker: a growing service economy with housing delivery at target pace

Economic base

Mount Barker has the profile of a growing service centre rather than a single-industry economy. In the 2021 Census, health care and social assistance accounted for 15% of employed residents, retail trade 10.5%, construction 9.8%, education and training 9.6%, and public administration and safety 7.2%. Manufacturing contributed 6.4%, while professional, scientific and technical services contributed 6.3%. The pattern gives the local economy several substantial employment bases across services, construction, public functions and professional work. It also leaves room for smaller agricultural, visitor, transport and industrial activities to support the resident economy.

The business base is broad and locally substantial. In June 2025, 3,435 businesses were registered and 1,194 were employing businesses. Construction was the largest listed business group at 689 registered businesses and 251 employing businesses, followed by professional, scientific and technical services with 380 and 147. Health care and social assistance recorded 245 registered businesses and 79 employing businesses, while retail recorded 233 and 124. This structure is consistent with a place serving a growing resident population through trades, services, health, education and consumption. The distinction between registered and employing businesses matters: the first measures business presence, while the second indicates businesses with employees.

Project program

The council’s project activity is concentrated in active transport, health, retail, school and sport work. Proposed tourism work adds a visitor-infrastructure direction, while completed transport and industrial work shows an earlier delivery phase. Health, school and sport are the largest kinds of active or proposed work, with the largest priced work described at a large scale. Transport work is also shared with other councils, so its access role extends beyond the council boundary. Taken together, the direction of work spans community services, movement, consumption, recreation and visitor activity rather than a single infrastructure function.

The approvals pattern adds a separate view of current building activity. In the 12 months to July 2026, 643 dwellings were approved, equal to 1.06× the council’s own three-year average. Non-residential building approvals reached $54m in the 12 months to June 2026, or 0.65× that average. The combination supports ongoing residential delivery more strongly than a broad upswing in non-residential approvals. It also gives the project direction a clear context: active health, schools, sport, transport and retail work sits alongside proposed tourism work and a residential approvals pace slightly above the council’s recent average.

Economic connections

The clearest connection between the economy and project work is capacity for a growing population. Active health and school work aligns with the strong resident employment base in health care and education, and could add service capacity as population growth increases demand. Active retail work supports the consumption role already visible in retail employment and business counts. Sport work may add community and recreation capacity, while proposed tourism work is consistent with a broader visitor-infrastructure direction. These functional links connect service provision with the sectors already prominent in the local economy, without treating project activity as a measure of economic output.

Transport work provides the strongest access mechanism. Active and completed transport work could improve movement between homes, jobs, services and markets, and shared transport work links Mount Barker with adjoining council areas. Construction activity is also relevant: construction employed 9.8% of residents in 2021 and the council recorded 689 registered construction businesses in June 2025. Housing approvals and the proposed tourism direction may sustain demand for construction and visitor-related services, while the $54m of non-residential approvals indicates a smaller current flow of approved commercial and institutional building work relative to the council’s own recent average. The relationship is therefore both physical, through access, and economic, through the work of local construction businesses.

Outlook

Mount Barker’s immediate outlook is shaped by population growth and housing delivery. Estimated resident population was 45,111 in 2025, up by 1,400 people or 3.2%. Net internal migration contributed 963 people, compared with natural increase of 245 and net overseas migration of 192. The state housing target requires 645 additional homes a year to 2031, and approvals since July 2021 were running at 101% of the yearly pace required. This indicates housing approvals have broadly kept pace with the target schedule. The sources of growth matter for service planning because internal migration and natural increase place different demands across household, education, health and community services.

The key watch is whether service and employment capacity develops alongside residential growth. The current labour force was 25,700 in 2026-Q1, with 927 unemployed people and an unemployment rate of 3.6%. Health, school, sport, transport and retail work may add capacity in areas that already underpin the local economy, while tourism work could broaden the visitor role. The next direction of building approvals, the labour market, population growth and the balance between active, proposed and completed work will indicate how infrastructure activity is tracking the council’s changing economic base. Non-residential approvals, at 0.65× the council’s own three-year average, are a particularly relevant indicator of institutional and commercial building activity.

For council and planning staff

The housing target is 645 additional homes a year to 2031, and approvals were at 101% of the required yearly pace from July 2021 to July 2026. Population reached 45,111 in 2025 after an increase of 1,400, or 3.2%. Net internal migration was 963, compared with natural increase of 245 and net overseas migration of 192, so service planning needs to account for both incoming residents and natural population change. Dwellings per 1,000 residents can be read from the approvals and population figures as a measure of delivery pace alongside population change. Current service capacity includes 1 open public and private hospital, 32 approved centre-based childcare services and 1,921 approved childcare places as at 30 September 2026.

For buyers’ agents and investors

The 2021 household profile combines established ownership with a meaningful rental segment: 46.2% of occupied private dwellings were owned with a mortgage, 29% were owned outright and 21.2% were rented. Average household size was 2.6 people and median age was 39. Movement was also material, with 47.6% of residents living at a different address five years earlier. Median household income was $1,753 a week and median personal income was $828 in 2021. The labour force participation rate was 66% in the Census, while the unemployment rate was 3.6% in 2026-Q1. New dwelling approvals comprised 556 houses and 87 townhouses, apartments and other dwellings in the 12 months to July 2026, showing a house-led mix alongside other forms of housing.

For builders and developers

In the 12 months to July 2026, 643 dwellings were approved, comprising 556 new houses and 87 townhouses, apartments and other dwellings. The approval ratio was 1.06× the council’s own three-year average, and the value of residential building work approved was $282.4m. Construction businesses numbered 689 registered businesses and 251 employing construction businesses in June 2025, while construction represented 9.8% of employed residents in the 2021 Census. Non-residential building approvals were $54m in the 12 months to June 2026, equal to 0.65× the council’s own three-year average. These figures describe approved residential and non-residential work, the house-led mix of new dwellings and the scale of the local construction business base.

Key takeaways

• Mount Barker’s economy is service-led and diversified, with health care, retail, construction and education forming major employment bases and construction the largest listed business group.
• Population growth is being driven mainly by net internal migration, while housing approvals have tracked at 101% of the yearly pace required by the state target.
• Project activity is active across transport, health, retail, schools and sport, with proposed tourism work and a large scale concentrated in health, schools and sport; non-residential approvals are at 0.65× the council’s own three-year average.

Sources

• Health care and social assistance — ABS Census 2021
• Registered businesses — ABS Counts of Australian Businesses
• Retail trade — ABS Census 2021
• Construction — ABS Census 2021
• Education and training — ABS Census 2021
• Public administration and safety — ABS Census 2021
• Manufacturing — ABS Census 2021
• Professional, scientific and technical services — ABS Census 2021
• Employing businesses — ABS Counts of Australian Businesses
• Registered businesses, Construction — ABS Counts of Australian Businesses
• Employing businesses, Construction — ABS Counts of Australian Businesses
• Registered businesses, Professional, Scientific and Technical Services — ABS Counts of Australian Businesses
• Employing businesses, Professional, Scientific and Technical Services — ABS Counts of Australian Businesses
• Registered businesses, Health Care and Social Assistance — ABS Counts of Australian Businesses
• Employing businesses, Health Care and Social Assistance — ABS Counts of Australian Businesses
• Registered businesses, Retail Trade — ABS Counts of Australian Businesses
• Employing businesses, Retail Trade — ABS Counts of Australian Businesses
• Dwellings approved, latest 12 months — ABS Building Approvals
• Non-residential building approvals, latest 12 months — ABS Building Approvals
• Dwellings approved versus this council's own three-year average — ABS Building Approvals
• Non-residential building approvals versus this council's own three-year average, weighted by the value of those approvals — ABS Building Approvals
• Estimated resident population — ABS Regional Population
• Dwellings approved since July 2021 against the yearly pace the housing target needs (100% is on pace) — Greater Adelaide Regional Plan
• Unemployment rate — Small Area Labour Markets
• Population change — ABS Regional Population
• Population change — ABS Regional Population
• Net internal migration — ABS Regional Population
• Natural increase — ABS Regional Population
• Net overseas migration — ABS Regional Population
• Target: 645 additional homes a year to 2031 — Greater Adelaide Regional Plan
• Labour force — Small Area Labour Markets
• Unemployed persons — Small Area Labour Markets
• Open public and private hospitals — AIHW MyHospitals
• Approved centre-based childcare services — ACECQA national register
• Approved childcare places — ACECQA national register
• Residential aged care homes — AIHW GEN aged care
• Residential aged care places — AIHW GEN aged care
• Rented — ABS Census 2021
• New houses approved, latest 12 months — ABS Building Approvals
• Owned with a mortgage — ABS Census 2021
• Owned outright — ABS Census 2021
• Average household size — ABS Census 2021
• Median age — ABS Census 2021
• Lived at a different address 5 years ago — ABS Census 2021
• Median household income (weekly) — ABS Census 2021
• Median personal income (weekly) — ABS Census 2021
• Labour force participation rate — ABS Census 2021
• Townhouses, apartments and other dwellings approved, latest 12 months — ABS Building Approvals
• Value of residential building work approved (new homes, alterations and additions), latest 12 months — ABS Building Approvals