Simulated workplaceCAQA Keystone Construction and Plumbing is a fictional business created by CAQA for training and assessment. It is not a real company and no person, client or record here is real.About this simulation
CPCCAQA KeystoneSimulated workplace
Simulated workplace
Scenario · Estimating and Contracts

Estimate the covered play deck extension

You are the Estimator in the Estimating and Contracts team.

Advanced4 to 5 hours7 tasks
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The situation

What has happened

Bayview Early Learning Group has asked Keystone to price a covered outdoor play deck and pergola at the rear of its Berwick centre. The drawings show a 48 square metre timber deck on stumps, a steel and timber pergola with a polycarbonate roof, balustrade, a drinking fountain and two external power points. The specification calls for a slip-resistant decking board and a balustrade that complies with the National Construction Code for childcare premises. The Estimating and Contracts Manager wants the estimate ready for review by 11 September and has asked that anything on the drawings that would not comply be flagged rather than priced silently. Subcontractor quotes are needed for the electrician and the plumber.

Your brief. Produce a quantity take-off from the drawings, a labour and material schedule, subcontractor allowances and a priced estimate with margin, and a short list of compliance issues found on the drawings, ready for the manager's review.
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Tasks

Deliverables

  • Quantity take-off sheet
  • Labour and material schedule
  • Priced estimate summary with assumptions and exclusions
  • Compliance issues note for the manager

Documents to use

Systems to use

Site Diary and Job Register

The daily record for each construction project: weather, workers on site, work done, deliveries, inspections, delays and instructions.

Plumbing Work Orders

Every plumbing installation, maintenance and callout job from request to test, certification and invoice.

For trainers and assessors

Units of competency

Current on training.gov.au for the Construction, Plumbing and Services Training Package as at 10 September 2026.

CPCCBC4004Identify and produce estimated costs for building and construction projects
CPCCBC4005Produce labour and material schedules for ordering
CPCCBC4012Read and interpret plans and specifications
CPCCCM3005Calculate costs of construction work
CPCCBC4009Apply legal requirements to building and construction projects

Qualifications

CPC40120Certificate IV in Building and Construction
CPC40320Certificate IV in Building Project Support
Assessor notes

What to look for

Evidence guide

Verify quantities against the drawings within a reasonable tolerance, check that waste and labour allowances are stated and defensible, and confirm the estimate separates subcontractor allowances from Keystone labour. The compliance note must identify at least the balustrade and slip resistance issues. Look for a clear assumptions and exclusions list that a client could read.

The student's evidence summary lists every record they created or changed in the systems named above, their notes and the tasks they ticked. Verify it against the deliverables and your own assessment tool.