Building Consent And Resource Consent Process In Christchurch
If you’re planning a new build, renovation, or addition in Christchurch, you’ll almost certainly run into two separate approval processes: building consent and resource consent. They’re often talked about as if they’re the same thing. They’re not, and confusing them is one of the most common causes of delay on residential projects across Canterbury.
This guide walks through what each consent covers, when you need one or both, and what the process actually looks like from application through to sign-off.
Building Consent vs Resource Consent – What’s The Difference?
Resource consent sits under the Resource Management Act and is about whether your proposal complies with the Christchurch District Plan, things like site coverage, height limits, yard setbacks, heritage overlays, and hillside or hazard zoning. It’s assessed by Council planners.
Building consent sits under the Building Act 2004 and is about whether your building work meets the New Zealand Building Code, structural performance, weather tightness, fire safety, drainage, and so on. It’s assessed by Christchurch City Council in its role as the Building Consent Authority.
A straightforward build on a standard residential section that complies with the District Plan may only need a building consent. A build that pushes past a height limit, sits on a hill site, affects a heritage item, or falls within a hazard overlay will usually need resource consent as well, and in most cases, that has to be resolved before the building consent can proceed.
When Do You Need A Resource Consent In Christchurch?
Common triggers under the Christchurch District Plan include exceeding a permitted height or height-in-relation-to-boundary rule, building on a slope or hill site where earthworks or geotechnical conditions apply, working within a heritage or character area, exceeding site coverage or building on a site with unusual shape or access constraints, and any significant earthworks or vegetation removal on sensitive sites.
If your project needs resource consent, Christchurch City Council publishes clear statutory timeframes for how long a decision should take, and these vary depending on whether the application is notified:
- Fast-track controlled activity land use consent: 10 working days
- Non-notified application: 20 working days (or 50 if a hearing is held)
- Limited notified application: approximately 100 working days (around four and a half months)
- Publicly notified application: approximately 130 working days (around six months)
These figures come directly from Council guidance and are worth checking before you set a build timeline, particularly if your site is likely to need notification. See more on submitting your resource consent application.
As with building consent, the statutory clock pauses if the Council issues a request for further information, and only resumes once that information is provided. Vague or incomplete supporting documents are the single biggest reason resource consent applications run long.
When Do You Need A Building Consent?
Most new dwellings, structural alterations, additions, and significant plumbing or drainage changes require a building consent. There are exemptions under Schedule 1 of the Building Act, and these were widened significantly from 15 January 2026, when a new exemption came into effect for small standalone dwellings (commonly referred to as granny flats) up to 70 square metres, provided the design and construction is carried out or supervised by a Licensed Building Practitioner and the build meets a set of specific conditions, including compliance with the National Environmental Standards for Medium Density Residential Development.
It’s worth being cautious here. An exemption from building consent does not automatically mean an exemption from resource consent, and the conditions attached to the small standalone dwelling exemption are detailed enough that getting them wrong can create real problems later, at resale, at finance, or with insurance. For anything beyond a straightforward, code-compliant small structure, it’s worth getting advice before assuming exempt status applies.
The Building Consent Process – Step By Step
1. Pre-Application And Design. Plans, specifications, and supporting documentation (engineering, drainage, product data, Licensed Building Practitioner details) are prepared and reviewed for completeness before submission. This is the stage where most future delays are either avoided or built in.
2. Submission And Completeness Check. Once an application is lodged, Christchurch City Council checks it for completeness (generally within 48 hours, extending to up to 96 hours during periods of high demand). If information is missing and can’t be supplied immediately, the application isn’t accepted and a non-acceptance letter is issued explaining what’s required.
3. Processing. Once accepted, the statutory 20-working-day clock begins. The application may be circulated internally to planning, engineering, and other specialist teams depending on the scope of work. As of April 2026, Council reported that residential consent processing was starting within around 12 working days on average, with the large majority of March 2026 residential applications processed within the statutory 20-day timeframe.
4. Requests For Information (RFI). If the Council needs clarification or missing detail, it issues an RFI and the statutory clock pauses until a complete response is provided. This is the most common reason building consents take longer than expected, and it’s almost always tied back to incomplete drawings, missing engineering detail, weak drainage information, or gaps in Licensed Building Practitioner paperwork.
5. Consent Issued. Once the Council is satisfied the proposed work would meet the Building Code, the consent is granted. Construction cannot legally begin before this point.
6. Inspections. During construction, Council inspectors carry out site inspections at agreed milestones (foundation, framing, plumbing, and so on) to confirm the work matches the approved consent. The Building Consent Authority aims to carry out at least 80 percent of inspections within three working days of the requested date.
7. Code Compliance Certificate (CCC). After the final inspection confirms the completed work matches the consent, Council issues a Code Compliance Certificate. This is the formal record that the building work complies, and it matters for resale, insurance, and finance further down the track.
What Actually Causes Delays In The Consent Process
In practice, the projects that move smoothly through consent are the ones that go in complete the first time. The projects that stall almost always share the same handful of issues: incomplete or inconsistent drawings, missing structural engineering detail, unclear drainage or storm water information, gaps in product specification, and missing Licensed Building Practitioner documentation.
On sites that also need resource consent, sequencing matters too. Trying to lodge a building consent before the resource consent question is resolved is one of the more common (and avoidable) causes of a stalled project.
Why Work With A Building Team That Manages Both?
A design-build approach means one team is coordinating design, engineering, and consent documentation from the outset, rather than a homeowner managing separate consultants and hoping the paperwork lines up.
For a hill site, a heritage property, or any similar project in Christchurch where resource consent is likely needed, getting the sequencing and documentation right from the start is often the difference between a straightforward consent and a six-month one.
If you’re planning a bespoke new build project or an architectural build in Christchurch and want clear and expert information on what consents your site is likely to need, get in touch with the LM Architectural Builders team today.
Frequently Asked Questions
How Long Does A Building Consent Take In Christchurch? The statutory timeframe is 20 working days once an application is accepted as complete, though the clock pauses if the Council issues a request for information. Council reported that residential applications were, on average, starting processing within around 12 working days as of April 2026, with the majority decided within the statutory period.
Do I Need Both A Building Consent And A Resource Consent? Not always. A straightforward, District Plan-compliant build may only need a building consent. Projects on hill sites, in heritage areas, exceeding height or coverage rules, or involving significant earthworks will typically need resource consent as well, and this generally needs to be resolved before the building consent can proceed.
What Triggers A Resource Consent In Christchurch? Common triggers include exceeding permitted height or boundary setback rules, building on a hillside or hazard-prone site, working within a heritage or character area, exceeding site coverage limits, and significant earthworks or vegetation removal.
Can I Build A Granny Flat Without A Building Consent In 2026? As of 15 January 2026, small standalone dwellings up to 70 square metres can be exempt from building consent if designed and built or supervised by a Licensed Building Practitioner and the project meets a specific set of conditions, including compliance with the National Environmental Standards for Medium Density Residential Development. The exemption does not automatically remove the need for resource consent, and the conditions are detailed enough that professional advice is worthwhile before proceeding.
What Causes Building Consent Delays And How Can I Avoid Them? The most common causes are incomplete drawings, missing structural engineering detail, unclear drainage information, gaps in product specification, and missing Licensed Building Practitioner paperwork. A complete, well-documented application at first submission is the single biggest factor in avoiding delays.
