Room for a small stand-alone unit in Christchurch
Since 15 January 2026 a new detached unit of up to 70 m² needs no building consent and, in a residential zone, no resource consent, if (among other conditions) it sits at least 2 m from boundaries and other buildings and the site's building coverage stays at or under 50%. Testing those two dimensional rules against LINZ parcel and building outlines for 126,082 residential sections in 93 Christchurch suburbs, 39% show no obvious barrier. For cross-lease sections the share is 15%.
Some 47% of the sections with no obvious barrier are also in a mapped hazard, qualifying-matter or noise overlay, where the District Plan may add conditions.
By suburb
| Suburb | Sections screened | No obvious barrier | … also in an overlay | Cross-lease: no obvious barrier |
|---|---|---|---|---|
| Addington | 974 | 20% | 4% | 11% |
| Aidanfield | 1,121 | 18% | 0% | — |
| Akaroa | 894 | 71% | 93% | 48% |
| Aranui | 2,213 | 41% | 42% | 23% |
| Avondale | 1,027 | 26% | 76% | 21% |
| Avonhead | 3,163 | 31% | 14% | 8% |
| Avonside | 516 | 51% | 67% | 17% |
| Beckenham | 704 | 44% | 12% | 23% |
| Belfast | 1,992 | 49% | 13% | 23% |
| Birdlings Flat | 89 | 72% | 0% | — |
| Bishopdale | 2,975 | 29% | 40% | 11% |
| Bromley | 1,023 | 23% | 59% | 10% |
| Broomfield | 890 | 23% | 0% | 4% |
| Bryndwr | 2,156 | 46% | 30% | 20% |
| Burnside | 2,857 | 34% | 19% | 8% |
| Burwood | 2,483 | 41% | 31% | 23% |
| Casebrook | 2,254 | 44% | 40% | 10% |
| Cashmere | 2,651 | 65% | 84% | 29% |
| Cass Bay | 169 | 74% | 100% | — |
| Charteris Bay | 344 | 95% | 97% | — |
| Christchurch Central | 1,076 | 30% | 39% | 9% |
| Clifton | 542 | 78% | 100% | — |
| Corsair Bay | 63 | 84% | 100% | — |
| Cracroft | 468 | 66% | 58% | — |
| Dallington | 627 | 39% | 66% | 19% |
| Diamond Harbour | 834 | 86% | 100% | — |
| Duvauchelle | 193 | 88% | 100% | — |
| Edgeware | 820 | 19% | 53% | 11% |
| Fendalton | 1,492 | 48% | 60% | 13% |
| Governors Bay | 317 | 96% | 100% | — |
| Halswell | 8,302 | 46% | 27% | 9% |
| Harewood | 924 | 50% | 59% | 5% |
| Heathcote Valley | 852 | 51% | 68% | 16% |
| Hei Hei | 1,277 | 34% | 0% | 13% |
| Hillmorton | 931 | 36% | 1% | 13% |
| Hillsborough | 1,038 | 62% | 62% | 30% |
| Hoon Hay | 2,652 | 45% | 28% | 18% |
| Hornby | 2,313 | 31% | 2% | 23% |
| Huntsbury | 931 | 68% | 97% | 30% |
| Ilam | 2,781 | 36% | 62% | 8% |
| Islington | 464 | 36% | 1% | 27% |
| Kainga | 223 | 57% | 17% | — |
| Kennedys Bush | 358 | 96% | 100% | — |
| Le Bons Bay | 51 | 94% | 0% | — |
| Linwood | 2,657 | 29% | 43% | 13% |
| Little Akaloa | 65 | 97% | 100% | — |
| Little River | 280 | 94% | 38% | — |
| Lyttelton | 1,143 | 60% | 99% | 30% |
| Mairehau | 2,581 | 41% | 48% | 17% |
| Marshland | 1,940 | 38% | 2% | — |
| Merivale | 1,689 | 35% | 59% | 10% |
| Moncks Bay | 252 | 52% | 84% | 17% |
| Mount Pleasant | 1,844 | 76% | 98% | 46% |
| New Brighton | 2,460 | 33% | 64% | 20% |
| North New Brighton | 1,645 | 27% | 4% | 8% |
| Northcote | 872 | 44% | 56% | 14% |
| Northwood | 1,571 | 17% | 23% | 7% |
| Opawa | 525 | 47% | 14% | 28% |
| Papanui | 1,967 | 35% | 29% | 12% |
| Parklands | 3,443 | 22% | 3% | 11% |
| Phillipstown | 859 | 22% | 78% | 16% |
| Purau | 64 | 92% | 0% | — |
| Redcliffs | 1,026 | 60% | 93% | 30% |
| Redwood | 2,989 | 34% | 26% | 11% |
| Riccarton | 1,941 | 28% | 74% | 8% |
| Richmond | 1,230 | 37% | 62% | 12% |
| Richmond Hill | 232 | 87% | 99% | — |
| Robinsons Bay | 110 | 81% | 100% | — |
| Russley | 877 | 27% | 1% | 14% |
| Saint Martins | 1,042 | 41% | 22% | 20% |
| Scarborough | 375 | 77% | 100% | — |
| Shirley | 1,925 | 35% | 41% | 21% |
| Sockburn | 1,460 | 33% | 0% | 18% |
| Somerfield | 2,271 | 35% | 9% | 17% |
| South New Brighton | 793 | 34% | 72% | 18% |
| Southshore | 462 | 47% | 91% | 15% |
| Spencerville | 220 | 89% | 99% | — |
| Spreydon | 2,583 | 28% | 1% | 17% |
| St Albans | 3,978 | 29% | 43% | 9% |
| Strowan | 1,222 | 39% | 36% | 10% |
| Sumner | 1,079 | 40% | 86% | 20% |
| Sydenham | 1,505 | 20% | 8% | 14% |
| Takamatua | 168 | 98% | 81% | — |
| Templeton | 622 | 31% | 66% | 22% |
| Upper Riccarton | 1,614 | 38% | 17% | 12% |
| Waimairi Beach | 454 | 25% | 20% | 5% |
| Wainoni | 823 | 42% | 18% | 20% |
| Wainui | 205 | 86% | 100% | — |
| Waltham | 809 | 27% | 35% | 11% |
| Westmorland | 930 | 66% | 94% | 33% |
| Wigram | 2,851 | 14% | 0% | — |
| Woolston | 3,717 | 31% | 76% | 20% |
| Yaldhurst | 688 | 42% | 27% | — |
What this screen does and does not tell you
It checks two measurements from public data: whether a 7 × 10 m space fits at least 2 m from the boundary and from existing buildings, and whether building coverage would stay at or under 50% with a 70 m² unit added. It says nothing about any individual property, and this site does not show results for addresses.
A screen of two measurements, not advice, and never a statement that anything can be built. Building outlines are approximate and leave out decks, sheds, pools and driveways; easements, land covenants, consent notices, pipes, trees, unmapped hazards and district plan rules that still apply are not visible here. On a cross-lease section the other owners' consent and a new flats plan are normally needed as well, and "one unit per site" may mean one for the whole shared section. The council's Project Information Memorandum (PIM) is the authoritative check. Sources: LINZ NZ Primary Parcels and NZ Building Outlines (CC BY 4.0), Christchurch City Council District Plan (CC BY 4.0).
Guides
- Granny flat rules: The 2026 rules for a small stand-alone dwelling
- Cross-lease explained: What a cross-lease is, flats plans and converting to freehold
- LIM reports: What a LIM report includes, what it costs and how long it takes
- All suburbs: Every suburb page, by council