Gwynedd Council approves 87.8% of planning applications, based on 9,662 real decisions analysed from the council’s public planning portal. The national average across all councils tracked by PlanningLens is 85.0%. Gwynedd sits 2.8 percentage points above the national average.
According to PlanningLens analysis of 789 decided applications, Gwynedd Council approved 87.6% of planning applications in 2025. Across 9,662 decisions on record (February 2015 to September 2026), the overall approval rate in Gwynedd is 87.8%; the national average across UK councils tracked by PlanningLens is 85.0%.
Source: PlanningLens (planninglens.co.uk) analysis of Gwynedd council planning portal records · Data to 28 September 2026 · Quote freely with attribution
Enter your postcode for a free, personalised approval pattern report, based on your ward and application type.
Not all applications are treated equally. Extension types, listed building consent, and change of use applications each have very different success rates in Gwynedd.
| Application Type | Approved | Refused | Total | Rate |
|---|---|---|---|---|
| Other | 9,829 | 1,264 | 11,093 | 88.6% |
A loft conversion in one ward can have a 90% approval rate. In the next ward, 55%. The free check tells you which side you're on, your free property report is emailed in minutes.
Check My PostcodeWard-level data reveals where planning applications are most and least likely to succeed. Officers, local policies, and neighbourhood character all play a role.
| Ward | Approved | Refused | Total | Rate |
|---|---|---|---|---|
| Abersoch | 329 | 60 | 389 | 84.6% |
| Llanystumdwy | 315 | 49 | 364 | 86.5% |
| Porthmadog (West) | 284 | 33 | 317 | 89.6% |
| Criccieth | 275 | 36 | 311 | 88.4% |
| Llanengan | 213 | 53 | 266 | 80.1% |
| Tregarth & Mynydd Llandygai | 234 | 30 | 264 | 88.6% |
| Efailnewydd / Buan | 213 | 31 | 244 | 87.3% |
| Abersoch gyda Llanengan | 181 | 44 | 225 | 80.4% |
| Groeslon | 187 | 36 | 223 | 83.9% |
| Llanwnda | 191 | 32 | 223 | 85.7% |
| Bethel a'r Felinheli | 197 | 23 | 220 | 89.5% |
| Penrhyndeudraeth | 206 | 14 | 220 | 93.6% |
| Arllechwedd | 198 | 19 | 217 | 91.2% |
| Seiont (Caernarfon) | 204 | 9 | 213 | 95.8% |
| Y Felinheli | 181 | 29 | 210 | 86.2% |
| Aberdaron | 186 | 23 | 209 | 89.0% |
| Pwllheli (North) | 194 | 13 | 207 | 93.7% |
| Abermaw | 190 | 16 | 206 | 92.2% |
| Llanberis | 188 | 18 | 206 | 91.3% |
| Pentir | 177 | 22 | 199 | 88.9% |
| Deiniol (Bangor) | 180 | 17 | 197 | 91.4% |
| Menai (Caernarfon) | 184 | 9 | 193 | 95.3% |
| Abererch | 169 | 21 | 190 | 88.9% |
| Llanrug | 169 | 18 | 187 | 90.4% |
| Clynnog | 151 | 27 | 178 | 84.8% |
Showing top 25 of 77 wards by volume. Your free property report includes the full ward breakdown.
See full ward breakdown →How Gwynedd’s planning approval rate has changed year by year, down 2.3pp since 2018.
Bar height reflects approval rate. Colour: green ≥85%, amber ≥70%, red below 70%.
Real residential planning decisions from Gwynedd council. Each reference links to the council's own planning portal so you can verify the details yourself.
| Reference | Proposal | Decision |
|---|---|---|
| C26/0273/09/DT Tywyn (West) | Estyniad un llawr i gefn yr eiddo / Single storey extension to rear of propert | Approved |
| C25/0003/16/DT Tregarth & Mynydd Llandygai | Codi 3 boeler biomas ( cais ôl-weithredol) Erection of 3no. biomass boilers (ret | Approved |
| C23/0198/40/LL Abererch | Trosi adeilad allanol yn uned gwyliau / Convert outbuilding into holiday accommo | Approved |
| C26/0456/17/DT Tryfan | Estyniad unllawr i flaen a chefn yr annedd. Single storey extension to front and | Approved |
| C26/0450/24/DT Llanwnda | Estyniad unllawr i gefn yr eiddo. Single storey rear extension | Approved |
| C25/0585/17/LL Tryfan | Adeiladu sied amaethyddol. Erection of agricultural shed. | Refused |
| C26/0282/13/LL Gerlan | Codi dwy sied ddiwydiannol ar gyfer dosbarth defnydd B8 Erection of two industri | Approved |
| C26/0245/13/DT Canol Bethesda | Estyniad deulawr arfaethedig i gefn yr eiddo Proposed two store extension to the | Approved |
| C26/0274/40/DT Efailnewydd / Buan | Adeiladu sied storio / Construction of storage shed | Approved |
| C26/0209/11/DT Dewi (Bangor) | Codi modurdy ar arwyneb concrid a wal gynnal presennol Erection of garage over e | Approved |
Find out what actually gets approved near your address first. Your free property report analyses the 20 nearest decisions to your property, ward-specific refusal patterns, and extension-by-extension approval patterns. Based on Gwynedd's 9,662 real decisions. Free, emailed in minutes.
Check my postcodeCompare Gwynedd's planning approval rates with neighbouring areas:
Dig deeper into Gwynedd's planning statistics, by ward, extension type, or project category:
Data-driven guides to help you understand planning approval patterns:
Yes. PlanningLens offers a free planning permission check for Gwynedd. Enter your postcode to instantly see approval rates for your ward and application type, based on 9,662 real decisions from Gwynedd council. The full property-specific report is also free and emailed within minutes.
Enter your postcode on PlanningLens for a free instant check based on Gwynedd's real planning decisions. The free property report goes further: it analyses the 20 nearest comparable decisions to your property, ward-level refusal patterns, and approval rates by application type. Free and emailed within minutes.
Based on 9,662 planning decisions, the overall approval rate in Gwynedd is 87.8%. The national average across councils tracked by PlanningLens is 85.0%. Rates vary significantly by ward and application type.
PlanningLens has analysed 9,662 planning decisions from Gwynedd council. 8,488 were approved and 1,174 were refused. These figures cover every decision on record for the council, February 2015 to September 2026.
The average approval rate in Gwynedd is 87.8%, but outcomes depend heavily on your specific ward, the type of extension or development you are proposing, and local planning policy. Use the free PlanningLens postcode check to get a personalised score.
Writing about planning in Gwynedd? These figures are free to republish with attribution. Copy the one-line citation, or paste the stat box into any website, CMS or newsletter, it carries its own styling and links back to this page for verification.