CPC31420 is the nationally recognised Certificate III in Construction Waterproofing. It prepares you for work as a construction trades workers. It has been the current version on the national register since 2020, when it replaced CPC31411. 1,855 people enrolled in 2025, down 8.8% on the year before.
The signals behind the Certificate III in Construction Waterproofing are mixed, and both sides are worth weighing. Employment is projected to grow through 2035. Enrolments are falling. These are official statistics, not a promise about your result.
Construction trades workers jobs are projected to grow. Jobs and Skills Australia projections put these occupations at 1,836 workers in May 2025, 1,953 by May 2030 (up 6.4%) and 2,039 by May 2035 (up 11.1%).
Certificate III in Construction Waterproofing graduates find work less often than is typical at Certificate III level. In the 2025 NCVER Student Outcomes survey, 83.9% were employed or in further study after training. The typical Certificate III result is 88%, across 105 qualifications. Median income after training was $76,800, against $54,000 typical. 92% were satisfied with the training, against 90.6% typical. Income here is the survey median about six months after training. It includes part-time work, so it is not the full-time award rate.
Fewer people are enrolling in the Certificate III in Construction Waterproofing than a year ago. Across Australia, 2,035 people enrolled in 2024. In 2025 it was 1,855, down 8.8% in a year. National data for CPC31420 starts in 2021.
The register and the national framework set some of this. Providers set the rest.
State funding for CPC31420 is being verified against official program lists.
Eligibility and student contributions vary by program and provider. The official state listing is the source of truth. In a subsidised place the government pays most of the tuition and you pay a co-contribution set by the program and provider.
The Certificate III in Construction Waterproofing is 19 units: 14 core, plus 5 electives chosen from 11 options on the register. Prerequisites apply to 16 of them, marked below.
No Get Course partner currently lists this qualification. Check the national register for organisations approved to deliver it, and remember that approval to deliver is a regulatory fact, not a recommendation. You can browse live courses from our partners and enquire today.
Browse coursesGet Course maps CPC31420 to its occupations using the register’s own outcome wording, shown with ANZSCO codes (here, 3300) so the mapping can be checked. Job advertisement counts come from the Jobs and Skills Australia Internet Vacancy Index and count online ads, not vacancies filled. Enrolment counts come from NCVER Total VET Activity and count people in training, not completions. Outcome benchmarks marked “typical” are medians computed by Get Course across all Certificate IIIs in the same NCVER collection; they are derived figures, not official NCVER benchmarks. Funding rows appear only after verification against the official state program list. Source vintages: NCVER Total VET Activity 2025 collection; NCVER Student Outcomes survey 2025 survey; employment projections May 2025 to May 2035 release; register training.gov.au, synced 15 September 2026; register synced 18 Sept 2026. Page last updated 19 Sept 2026.