The water is isolated, but the last compatible fitting left the van yesterday and nobody recorded it. Set plumber van stock around the call-outs that vehicle must complete, then replenish it from parts actually used.
Treat each van as a separate stock location. Give every item a clear description, counting unit, bin, reorder point and target level. Keep named-job materials, damaged returns, tools and waste out of the available count.
Define the call-outs before choosing parts
Start with completed plumbing jobs. Not a supplier catalogue.
List the call-outs assigned to the van. Separate occupied-home repairs, blocked drains, leak investigations, tap repairs, toilet repairs, planned replacements and any specialist work your business handles.
A van does not need to complete every possible job on the first visit. Decide which work should be completed immediately, which work is diagnosis only and which work needs a quoted return visit.
Use a coverage table:
| Van | Call-out type | Job-stopping part | Compatibility detail | Stock location | Intended outcome |
|---|---|---|---|---|---|
| [Vehicle reference] | [Repair type] | [Part needed to continue] | [System, material, metric size, thread, seal or specification] | [Van, workshop or named-job box] | [Complete, diagnose or plan return] |
Review the work orders for that van. Mark the parts used repeatedly. Mark supplier runs that held up the job. Mark the items collected but not used.
Do not use broad entries such as “tap parts” or “assorted fittings”. Record the detail that decides whether the part can be fitted. That may be the pipe system, material, metric size, thread, seal, model or approved substitute.
Carrying a part does not decide who may install it. Ask your state or territory licensing regulator which licence class covers the work and write down the answer. For work in NSW, use NSW Fair Trading (opens in a new tab) for trade and contractor licence questions.
Choose the vehicle after measuring the working load
The best vehicle for a plumber is not a particular make or model. It is the van or ute that carries the defined load within the manufacturer’s limits and lets the tradie reach common parts without unloading half the vehicle.
Measure the complete working load. Include:
- Fitted racking, drawers and barriers
- Driver, passengers and personal gear
- Permanent parts and consumables
- Tools and specialist equipment
- Safety gear and site protection
- Long pipe and other long materials
- Materials reserved for accepted jobs
- Chemicals and wet equipment
- Removed parts and contained waste
Check the vehicle manufacturer’s payload information for the exact vehicle and configuration. Do not base the decision on empty cargo dimensions or an estimated shelf load.
Test the fitted layout as well. Open every working door. Pull out the common bins. Check that heavy items can be restrained and that long goods have a fixed position. Leave a separate contained space for waste.
Good plumbing van organisation keeps clean parts away from wet drain equipment, chemicals and removed materials. Products exposed to unsuitable heat or storage conditions go into quarantine until their condition is checked against the manufacturer’s instructions.
For workplace safety questions about storage, handling and work equipment in NSW, check SafeWork NSW (opens in a new tab). Use the WHS regulator for your own state or territory when the vehicle operates elsewhere.
Decide what earns permanent plumber van stock space
Permanent stock must support an assigned call-out. An item earns space when running out can stop that work, when the van uses it repeatedly or when collecting it during the job causes an avoidable delay.
Build the plumbing parts inventory from useful categories, then choose the exact lines from your completed jobs:
- Repair fittings for the pipe systems the van encounters
- Isolation and water-control parts
- Tap and toilet repair items
- Wastes, traps and repair components
- Washers, seals, clips and O-rings
- Fixings, brackets and supports
- Jointing, sealing and cleaning products
- Site-protection and cleanup consumables
These are categories. They are not a universal load list or standard quantities. The exact systems and parts come from the work assigned to your business.
Keep slow, bulky and uncertain items at the workshop
A bulky item should not occupy a working bin just because it may be useful one day. Keep slow-moving parts at the workshop when the repair can wait for planned collection.
Look for duplicate stock across several vehicles. If the same expensive item sits untouched in every van, consider one labelled workshop location instead. Record who collects it and which job receives it.
Unidentified parts do not belong in permanent stock. Put them in quarantine until somebody confirms the specification and condition. If that cannot be done, remove them from the stock record.
Reserve accepted-job materials by customer and job
A box in the van may be physically present but unavailable. Materials bought for an accepted quote belong to that job.
Label named-job materials with the customer, job reference and planned vehicle. Store them away from free call-out stock. A tradie looking for the last available valve should not take one already committed to tomorrow’s installation.
Keep specified fixtures and equipment with the accepted scope. If the customer changes the scope on site, stop and write a variation before using extra materials or changing the invoice.
Keep parts separate from tools, safety gear and waste
Tools and specialist equipment are business assets. PPE and safety equipment need their own checks. Vehicle supplies belong to the vehicle. Removed parts and waste are not stock.
Do not combine these records with saleable plumbing parts. A mixed checklist gives you a false stock value and produces useless purchase orders.
Build a plumber stock checklist another tradie can use
Every live stock line needs one description and one counting unit. Use the same wording on the bin label, count sheet, material issue and replenishment order.
Copy this blank checklist:
| Field | Entry |
|---|---|
| Item description | [Clear part or consumable name] |
| Counting unit | [Each, metre, complete pack or another defined unit] |
| Supported call-out | [Repair this line supports] |
| Compatibility | [System, material, metric size, thread, seal or model] |
| Supplier reference | [Ordering reference] |
| Approved substitute | [Confirmed substitute or none] |
| Assigned van | [Vehicle reference] |
| Normal bin | [Shelf, drawer or labelled bin] |
| Free quantity | [Usable stock available now] |
| Reserved quantity | [Stock held for named jobs] |
| Quarantine quantity | [Stock awaiting inspection or identification] |
| Confirmed incoming | [Ordered but not received] |
| Reorder point | [Quantity that triggers review] |
| Target level | [Quantity wanted after replenishment] |
| Last count | [Date and person] |
Define the counting unit before the first count. If the unit is “each”, count individual usable pieces. If the unit is a complete pack, an opened pack with missing pieces cannot be counted as complete.
Do not give two similar parts one vague bin. The label must show the difference that matters on site. Two fittings that look alike may use different systems, threads or seals.
Give each line one normal location. If stock must sit in more than one place, list every location. Door pockets, loose cartons and the space behind the driver’s seat are still stock locations if parts are left there.
Set plumber van stock reorder points from actual use
A reorder point tells you when to act. A target level tells you how much you want after the top-up. Do not use one number for both jobs.
Set the reorder point with this framework:
Reorder point = expected use during replenishment time + chosen reserve
Take expected use from completed call-outs assigned to that vehicle. Replenishment time includes the real time needed to order, collect, receive and put the item back into its bin.
Choose the reserve line by line. Ask what happens when the item runs out. A job-stopping part with no confirmed substitute needs a different decision from a consumable that can wait until the next workshop visit.
Do not invent standard minimums. If your records are thin, start from the call-outs assigned to the van. Record every issue and shortage, then change the level from real use.
Set a separate target level for the next ordering cycle. When free stock reaches the reorder point, calculate the top-up like this:
Order quantity = the greater of zero or target level − free usable stock − confirmed incoming stock
If the result is below zero, order nothing. Reserved and quarantined quantities do not enter the calculation because they are not free usable stock.
An order waiting for approval is not incoming stock. Neither is an unconfirmed supplier request. Record incoming stock only when the item, quantity and collection or delivery plan have been confirmed.
Review levels when the service mix changes. A van moved from general maintenance to planned installations should not keep the same load by habit.
Make the physical count match the record
Count only parts that can be fitted on the next suitable call-out. Physical presence is not availability.
Use five plain stock states:
- Free: usable for an unplanned call-out
- Reserved: committed to a named job
- Issued: used on or assigned to a work order
- Incoming: confirmed but not received
- Quarantine: damaged, incomplete, contaminated, unidentified or unchecked
Inspect opened packets and returned parts before putting them into a live bin. Confirm the remaining quantity, condition and specification. A wet packet or incomplete kit does not become free stock because it came back from site.
Record count differences instead of quietly changing the figure. Use a short adjustment log:
| Date | Van | Item | Recorded quantity | Physical quantity | Reason | Checked by |
|---|---|---|---|---|---|---|
| [Date] | [Vehicle] | [Stock line] | [Quantity] | [Quantity] | [Issue missed, damage, transfer, count error or other reason] | [Name] |
Repeated unexplained adjustments point to a broken step. Look for missed job issues, unrecorded transfers, loose stock or a counting unit that tradies do not understand.
Record van-to-van transfers at both ends
A transfer has a source and a destination. Reduce free stock on the source van when the part leaves. Increase it on the destination van after the receiving tradie checks the item.
Use an in-transfer state if handover is not immediate. Do not count the item as free in both vehicles. If it is reserved for a named job, keep that reservation through the transfer.
Issue every fitted part to the work order
The stock movement and job record must agree. When a tradie uses a part, move it from the van’s free quantity to the correct work order.
Record the item, quantity, cost and job reference. If the material belongs to a variation, attach it to that changed scope rather than hiding it in the original allowance.
This is the practical link between van replenishment and job costing. Without the issue, the van appears to have stock that has already gone. The job also appears cheaper than it was.
Returned materials take the reverse path. Inspect them first. A complete, undamaged and correctly identified item can return to free stock. Anything doubtful goes into quarantine.
If you run the work through plumbing software that connects quotes, schedules and invoices, attach the material issue to the correct work order. That is the useful job for job management software for tradies here.
Use actual job cost to correct the stock list
Compare estimated materials with the parts issued after the job closes. The actual vs estimated cost tells you whether the quote missed material, the tradie used an unexpected part or the issue record is incomplete.
Use the electrical Oak Street job as the house example. It is not a plumbing rate card.
R. Chen’s bathroom job at 14 Oak Street covered a bathroom exhaust fan and four LED downlights. Quote Q-1847 was 1,105 sample currency units. The ceiling was lined and the quote excluded chasing. Extra cable and chasing became an approved 160 variation, taking invoice INV-1847 to 1,265.
The recorded job cost against the original quote was 850. Profit was 1,105 − 850 = 255. Margin was 255 ÷ 1,105 ≈ 23%, while markup was 255 ÷ 850 = 30%.
The costs of the 160 variation are not supplied. Do not calculate profit from the 1,265 invoice or combine that invoice total with the 850 job cost. Keep materials for original scope and changed scope under the right job reference.
Use the job-costing close-out process for tradies to compare the quote with recorded labour and materials. If material cost changes the selling price, separate cost, markup and margin using the practical job-pricing guide.
Then review stock behaviour. Check emergency supplier runs, untouched permanent lines, repeated shortages, unexplained adjustments and parts returned after every job. Raise, lower or remove a line only when the work records support the change.
Keep Australian purchasing and tax records connected
Do not treat every item purchased as though it was fitted to a customer’s job. A supplier purchase, van receipt, job issue, return, waste entry and count adjustment are separate events.
Keep the supplier document with the purchase record. Record which stock location received the goods. When the part is fitted, issue it to the job. When it is damaged or discarded, record that movement instead of assigning it to a customer.
Check current GST and BAS record requirements with the Australian Taxation Office (opens in a new tab). Do not make the stock count carry tax information it cannot prove. The purchase and job records need to show what actually happened.
Hot vehicles need another check. Read the product manufacturer’s storage instructions for jointing products, sealants, chemicals and other temperature-sensitive items. Move questionable products to quarantine rather than counting them as usable.
Audit one van before changing the fleet
Pick one busy call-out vehicle. Define the jobs it should complete, label every live bin and separate free, reserved and quarantine quantities. Set the first reorder point and target level for each permanent line.
Run the next plumber van stock count after completed jobs, not before the system has recorded any use. Compare the physical bins with issues, transfers and incoming purchases.
Do not roll the system across every vehicle until that first van produces a clean count. Fix one missed movement at a time, then use the corrected record to set the next order.