Variation control
Risk register
Priority risks to close out before signing a domestic building contract.
Priority risks
Priority #1
7-star / SDA / thermally broken glazing
Exposed builders
Bevnol, Aspire, Symmetric, Chet confirmation needed
Likely cost
Medium to high
Mitigation
Require written confirmation that final energy report, NCC 2022 and SDA obligations are included as fixed price.
Priority #2
Drainage / OSD / WSUD / LPOD
Exposed builders
Bevnol, Aspire, Symmetric
Likely cost
High
Mitigation
Require itemised drainage inclusion list covering OSD, orifice, pits, pipes, raingardens, LPOD and council inspections.
Priority #3
Landscaping and fencing
Exposed builders
Bevnol, Aspire, Symmetric
Likely cost
$30k-$90k+
Mitigation
Obtain fixed separate price or carry owner contingency.
Priority #4
TPMP / arborist / tree protection
Exposed builders
Bevnol, Aspire, Symmetric, Chet confirmation needed
Likely cost
Medium to high
Mitigation
Confirm project arborist, fencing, ground protection, inspections and final certification.
Priority #5
Driveway / crossover / reinstatement
Exposed builders
Bevnol, Aspire, Symmetric
Likely cost
$10k-$35k+
Mitigation
Require specific scope for driveway, crossover, footpath/kerb reinstatement and asset protection.
Priority #6
Sewer diversion / branch / depth
Exposed builders
Bevnol, Aspire, Symmetric
Likely cost
$8k-$35k+
Mitigation
Confirm branch, depth >1.5m, existing dwelling continuity and service proving.
Full register
Contract clarification priority list
| # | Risk | Exposed builders | Likely cost | Mitigation | Level |
|---|---|---|---|---|---|
| #1 | 7-star / SDA / thermally broken glazing | Bevnol, Aspire, Symmetric, Chet confirmation needed | Medium to high | Require written confirmation that final energy report, NCC 2022 and SDA obligations are included as fixed price. | High |
| #2 | Drainage / OSD / WSUD / LPOD | Bevnol, Aspire, Symmetric | High | Require itemised drainage inclusion list covering OSD, orifice, pits, pipes, raingardens, LPOD and council inspections. | High |
| #3 | Landscaping and fencing | Bevnol, Aspire, Symmetric | $30k-$90k+ | Obtain fixed separate price or carry owner contingency. | High |
| #4 | TPMP / arborist / tree protection | Bevnol, Aspire, Symmetric, Chet confirmation needed | Medium to high | Confirm project arborist, fencing, ground protection, inspections and final certification. | High |
| #5 | Driveway / crossover / reinstatement | Bevnol, Aspire, Symmetric | $10k-$35k+ | Require specific scope for driveway, crossover, footpath/kerb reinstatement and asset protection. | High |
| #6 | Sewer diversion / branch / depth | Bevnol, Aspire, Symmetric | $8k-$35k+ | Confirm branch, depth >1.5m, existing dwelling continuity and service proving. | High |
| #7 | Aspire carport scope gap | Aspire | $15k-$50k | Ask Aspire to confirm the 33.5m2 carport is included or provide variation price. | High |
| #8 | Chet labour/subtotal reconciliation | Chet | Approx. $87k incl. GST | Request corrected BOQ and subtotal reconciliation before comparing. | High |
| #9 | Structural PS despite available engineering | Aspire, Symmetric, Bevnol confirmation needed | Medium | Ask builders to price from KCE structural drawings rather than broad allowances. | Medium-High |
| #10 | Authority/service costs | All builders | Medium | Clarify power pit, water meter, NBN, asset protection, tapping permits and connection activation fees. | Medium-High |