Construction variations software
Variations that show the margin on every change
Capture every change to your head contract after baseline, both what you'll bill the client and what it costs you, so the margin on each variation is visible before you submit it for approval.
Additional waterproofing membrane and detailing to balcony slab edges and door thresholds, all apartment levels, to rectify a design gap identified during frame stage.
The amount charged to the client — moves the contract sum when the variation is approved.
| Additional balcony waterproofing — client-approved scope addition | +$42,500.00 |
| Total | +$42,500.00 |
What this change is expected to cost you, per cost code — adjusts the budget on approval.
| Waterproofing membrane supply & install07-100Waterproofing | +$31,200.00 |
| Total | +$31,200.00 |
One record pairs the sell impact charged to the client (+$42,500.00) with the expected cost (+$31,200.00), so the $11,300.00 margin is visible before the variation is approved. On approval the sell side moves the head-contract sum and the cost side adjusts the budget on 07-100.
Trusted by builders across the country
From custom-home builders to commercial head contractors, teams run their projects on BuildPass.
Most builders only track half of every change
Both sides of every change
Each variation records a sell impact and a cost impact, so the margin on the change is visible from the moment you raise it.
A clear approval workflow
Take each change through create, submit and approve, with status tracked so everyone knows what's agreed, pending or draft.
Contract value stays live
Variations adjust the contract scope and value after baseline, sitting alongside the head-contract schedule of values.
Everything a variation needs, in one place
From raising the change to tracking it through to approved.
Capture both sides
Record the sell impact (what you bill) and the cost impact (what it costs you) on one record.
Run a clear workflow
Move each change through create, submit and approve, with status tracked at every step.
| Sell | +$42,500.00 |
| Cost | +$31,200.00 |
| Margin | $11,300.00 |
| Margin % | 26.6% |
See margin before you commit
Sell and cost sit side by side, so you see the margin, and the running effect on the job, before approval.
| Original contract | $4,807,500.00 |
| VO-007Balcony waterproofing | +$42,500.00 |
| Revised contract sum | $4,850,000.00 |
Keep the contract value live
Changes adjust contract scope and value after baseline, sitting alongside the head-contract schedule of values.
Hold the money precisely
Sell and cost impacts are held precisely and ex-GST at the boundaries.
| VO-005 | Facade cladding upgrade | Submitted |
| VO-006 | Lobby joinery revision | Draft |
| VO-007 | Balcony waterproofing | Approved |
Track status at a glance
Every variation carries its status, so open, submitted and approved changes are visible without chasing anyone.
Variations sit on the head contract in Win to Pay
They extend the contract after its baseline is set, working alongside the head-contract schedule of values: where the SOV freezes the original contract sum, variations capture every agreed change to scope and value on top of it. The cost impact flows into the same view of the job you track in the budget. Subcontractor-side changes are handled separately as subcontract change orders.
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