Section 224(c) of the Resource Management Act is the final engineering gate between a subdivision consent and a new certificate of title. Without it, you can't create new lots, and you can't sell them. Councils won't issue S224c sign-off until they're satisfied that all subdivision conditions have been met, which means engineering reports, as-built surveys, completion certificates, and often a CPEng review. Understanding what's in that bundle is critical to planning your settlement timeline.
What S224c actually is
Section 224(c) is not a separate consent. It is a certificate issued by the territorial authority (your city or district council) confirming that all conditions of the subdivision consent have been complied with. Once S224c is issued, the survey plan can be deposited with LINZ, and new titles are created.
The "c" refers to the specific subsection of Section 224 that deals with compliance with consent conditions. In practice, everyone in the industry simply calls it "the S224c" or "224c sign-off."
What councils need to see
The exact documentation varies by council, but the standard package includes the following items. Missing any one of them will delay the sign-off.
Engineering completion certificate
This is a formal statement from the supervising engineer (typically a CPEng holder) confirming that all civil works have been completed in accordance with the approved engineering drawings and the council's engineering code of practice. It covers roading, stormwater, wastewater, and water supply infrastructure. On the Henderson Line subdivision in Marton, the completion certificate covered new road formation, kerb and channel, stormwater reticulation, and wastewater connections for each lot.
As-built survey and drawings
As-built drawings show the infrastructure as it was actually constructed, not as it was designed. Pipe inverts, manhole locations, road levels, and stormwater detention volumes are all surveyed after construction and recorded on the as-built set. Councils use these to update their asset registers and to verify that the constructed infrastructure matches the approved design within acceptable tolerances.
CCTV pipe inspection reports
Most councils require CCTV inspection of all new gravity drainage pipes (stormwater and wastewater) before they will accept the infrastructure. The CCTV report confirms that pipes are correctly graded, free of construction debris, properly jointed, and undamaged. Failed CCTV inspections are one of the most common causes of S224c delays.
Pressure and leak testing
New water supply mains are pressure-tested to confirm they hold the specified test pressure without leaking. Wastewater mains may also require exfiltration or air testing. Test results must be documented and submitted with the S224c application.
Geotechnical completion report
Where earthworks or retaining structures are part of the subdivision, a geotechnical completion report confirming that the work was done in accordance with the geotechnical design is usually required. This includes compaction test results for engineered fill and confirmation that retaining walls were constructed as designed.
Consent notice and covenant documentation
Some consent conditions require ongoing obligations to be registered against the new titles as consent notices under Section 221 of the RMA. These might include minimum floor level requirements, stormwater management obligations, or limitations on building location. The consent notices must be prepared and ready for registration before S224c issues.
Who reviews the S224c application?
The council's development engineering team reviews the application and supporting documentation. On larger subdivisions, or where the council does not have in-house capacity, they may engage an external engineering reviewer. This review checks that the documentation is complete, that the engineering work complies with the consent conditions and the code of practice, and that the as-built records accurately reflect what was constructed.
On the Hereford Heights subdivision in Marton, the S224c review included verification of stormwater detention sizing, road formation compliance, and wastewater connection configuration for each lot.
Common causes of delay
- Incomplete documentation: The most frequent cause. A missing CCTV report, an unsigned completion certificate, or an incomplete as-built set will delay processing by weeks.
- Failed CCTV inspections: Pipe defects discovered during CCTV inspection require remedial work and re-inspection. Budget two to four weeks for this if it occurs.
- Consent condition ambiguity: Conditions that are unclear or open to interpretation can result in disagreements between the engineer and the council reviewer. Resolving these takes time.
- Survey plan discrepancies: If the as-built survey reveals that the constructed infrastructure does not match the approved survey plan (for example, a relocated easement boundary), the survey plan may need to be amended and re-approved.
Timeline expectations
Once a complete S224c application is lodged with the council, processing typically takes two to six weeks depending on the council's workload and the complexity of the subdivision. The statutory timeframe under the RMA is 20 working days, but in practice, requests for further information can extend this. Plan for the full six weeks in your settlement timeline to avoid unpleasant surprises.
S224c sign-off is the final engineering checkpoint before new titles issue. The documentation bundle includes completion certificates, as-built surveys, CCTV reports, pressure tests, and geotechnical sign-off. Incomplete applications are the most common cause of delay. Prepare the full package before lodging.