Inventory Management for Trades & Construction
A comprehensive process for tracking, counting, and managing inventory levels to ensure stock accuracy, minimize waste, and maintain optimal supply levels.
Purpose
To maintain accurate inventory records, prevent stockouts and overstock situations, reduce waste and shrinkage, and provide reliable data for purchasing decisions.
Scope
Covers physical inventory counts, system reconciliation, discrepancy investigation, and reporting. Does not cover purchasing or supplier management, which are addressed in the stock ordering SOP.
Prerequisites
- Access to the inventory management system
- Understanding of service categories and storage locations
- Calibrated counting and weighing equipment where applicable
- Current inventory layout map or planogram
Compliant with Safe Work Australia requirements, state WHS legislation, and Building Code of Australia (NCC) documentation standards.
Step-by-Step Procedure
Prepare for the Inventory Count
Gather all necessary materials, confirm the count schedule, and ensure the inventory management system is accessible and up to date with the latest transactions.
- 1.1Print or load the current inventory list from the management system
- 1.2Ensure all recent receipts, sales, and adjustments have been posted
- 1.3Prepare count sheets, scanners, and any required equipment
- 1.4Brief counting teams on procedures and assigned zones
Conduct the Physical Count
Systematically count all items in each designated zone, recording quantities accurately. Use a blind count method where practical to avoid bias.
- 2.1Begin in the first assigned zone and count every item methodically
- 2.2Record counts on the count sheet or directly into the scanning device
- 2.3Mark each shelf or bin as counted to prevent double-counting
- Count items from left to right, top to bottom for consistency
- Do not move items between zones during the count
Enter Counts into the System
Transfer all physical count data into the inventory management system. If counts were recorded on paper, enter them promptly to avoid transcription delays.
- 3.1Upload scanner data or manually enter paper-based counts
- 3.2Verify each entry matches the count sheet before confirming
- 3.3Save the count session with the correct date and count ID
Generate the Variance Report
Run the variance report to identify differences between the physical count and the system records. Flag any items exceeding the acceptable variance threshold.
- 4.1Generate the variance report from the inventory management system
- 4.2Highlight items with variances above the defined threshold
- 4.3Sort flagged items by variance magnitude for prioritized investigation
Investigate Discrepancies
For each flagged variance, conduct a root cause investigation. Check for data entry errors, misplaced stock, theft, damage, or system glitches.
- 5.1Recount flagged items to rule out counting errors
- 5.2Review recent job history for the affected items
- 5.3Check alternative storage locations for misplaced stock
- 5.4Job card findings for each investigated discrepancy
- Involve the team working in the relevant zone during investigation
Adjust Inventory Records
Apply approved adjustments to the inventory system to correct confirmed discrepancies. Ensure all adjustments are authorized and documented.
- 6.1Submit adjustment requests with supporting documentation
- 6.2Obtain approval from the authorized manager
- 6.3Apply the adjustments in the inventory management system
Identify Slow-Moving and Excess Stock
Analyze inventory data to identify items that are overstocked, slow-moving, or approaching expiration. Flag these for action in the next purchasing cycle.
- 7.1Run an aged inventory report to identify slow-moving items
- 7.2Check for items nearing expiration or obsolescence dates
- 7.3Prepare recommendations for markdowns, transfers, or disposal
Compile and Distribute the Inventory Report
Create a summary report detailing overall accuracy, key variances, adjustments made, and action items. Distribute to relevant stakeholders.
- 8.1Summarize the count results including accuracy percentage
- 8.2List all adjustments and their reasons
- 8.3Include recommendations for process improvements
- 8.4Send the report to management and the purchasing team
Quality Checkpoints
Common Mistakes to Avoid
Expected Outcomes
Percentage of items where the physical count matches the system record, targeting 97% or higher.
Total value of unaccounted inventory loss as a percentage of total inventory value, targeting below 1%.
Number of times a required item is out of stock when needed, targeting a reduction of 50% quarter over quarter.
Frequently Asked Questions
How often should a full inventory count be conducted?
A full physical count should be conducted at least quarterly. High-value or fast-moving items should be cycle-counted weekly or monthly.
What is an acceptable variance threshold?
Typically, a variance of up to 2% by value is considered acceptable for most items. High-value items should have a tighter threshold of 0.5% or less.
Should the business stop operations during a full count?
Ideally, yes. Freezing transactions during the count prevents discrepancies. If this is not possible, schedule counts during low-activity periods and pause receiving and shipping.
What should I do if I find damaged stock during the count?
Separate damaged items, record them on the damage log, and flag them for disposal or return. Do not include damaged items in the usable inventory count.
Want this customised for YOUR business?
We'll tailor every step to your exact operations, tools, and team structure.