Thornhill, Cardiff Planning Applications
Recent planning applications near Thornhill, Cardiff.
Cardiff · Wales · settlement
Planning applications in Thornhill are administered by Cardiff Council. View the full Cardiff Council planning applications page for approval rates and decision timelines.
About Thornhill
Thornhill is a vibrant community located in the northern part of Cardiff, Wales, positioned just south of Caerphilly. This area is notable for its residential developments and proximity to green spaces, making it an attractive location for planning applications related to housing and community infrastructure.
Enter a postcode to search for planning applications near Thornhill.
Town Insights
Property Prices
Average property sale price: £985,000 (based on 1 recent transactions from HM Land Registry).
Area Information
- Admin district: Cardiff
- Parliamentary constituency: Cardiff North
- LSOA: Cardiff 023C
Crime Statistics
0 crimes reported in 2026-05.
Flood Risk
No active flood warnings near Thornhill.
Keyword Scorecard
Planning constraint analysis based on the last 24 months of applications near Thornhill.
- Ecology & Wildlife Constraints (keywords: bats, bat survey, bat roost, great crested newt, GCN...)
- Trees & Landscape (keywords: tree preservation order, TPO, arboricultural, tree survey, root protection area...)
- Flood & Drainage (keywords: flood zone 2, flood zone 3, flood risk assessment, FRA, surface water...)
- Heritage & Conservation (keywords: listed building, grade II, grade II*, grade I, conservation area...)
- Green Belt (keywords: green belt, inappropriate development, very special circumstances, openness)
- Highways & Access (keywords: visibility splays, highway authority objection, access arrangement, parking provision, transport statement...)
- Refusal & Risk Indicators (keywords: refusal, delegated refusal, appeal dismissed, overdevelopment, character and appearance...)
- Planning Process & Appeals (keywords: appeal lodged, appeal allowed, appeal dismissed, public inquiry, inspector)
Planning Activity Summary
Approval rates, average decision times, and application type distribution for Thornhill based on the last 24 months of planning data.
Nearby Applications
9 planning applications found near Thornhill.
- - 1 - 35 Bolton Road Luton
Hybrid planning application for a development comprising: Full details of a new self-storage unit (Use Class B8) and Outline application (All matters reserved, except access) for residential units (Us
Status: Undecided | Type: Conditions | Council: Luton | Date: 2026-07-03
View full details - - 9 Elaine Close Thornhill Cardiff CF14 9AT
Single storey front extension.
Status: Undecided | Type: Full | Council: Cardiff | Date: 2026-06-17
View full details - - 104 Heol Hir Llanishen Cardiff CF14 5AD
Single storey rear extension, small double height extension and attic conversion including roof extensions and alterations.
Status: Undecided | Type: Full | Council: Cardiff | Date: 2026-06-16
View full details - - 65 Station Road Llanishen Cardiff CF14 5UT
Ground floor rear and side extension.
Status: Undecided | Type: Full | Council: Cardiff | Date: 2026-02-13
View full details - - Cartref 85 - 91 Station Road Llanishen Cardiff CF14 5UU
Extension to the front and rear of existing buildings, external alterations and associated works. (23/02832/FUL - Approved 06 December 2023):- Variation of Conditions 2 (Approved Plans), 3 (Constructi
Status: Permitted | Type: Conditions | Council: Cardiff | Date: 2025-12-02
View full details - - 11 Apollo Close Thornhill Cardiff CF14 9DP
Proposed replacement of existing conservatory with single storey rear extension
Status: Permitted | Type: Full | Council: Cardiff | Date: 2024-10-28
View full details - - 12 Copperfield Drive Thornhill Cardiff CF14 9DD
Single Storey Rear Extension.
Status: Rejected | Type: Outline | Council: Cardiff | Date: 2024-05-10
View full details - - 14 Aldwych Close Thornhill Cardiff CF14 9DR
Side dormer roof extensions
Status: Permitted | Type: Full | Council: Cardiff | Date: 2023-08-16
View full details - - 48 Everest Avenue Llanishen Cardiff CF14 5AQ
Excavation and alteration of existing driveway and boundary wall.
Status: Permitted | Type: Full | Council: Cardiff | Date: 2023-07-20
View full details
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A brief summary of Thornhill in Cardiff
Thornhill is a vibrant community located in the northern part of Cardiff, Wales, positioned just south of Caerphilly. This area is notable for its residential developments and proximity to green spaces, making it an attractive location for planning applications related to housing and community infrastructure.
Property prices in Thornhill show an average sale price of £985,000, based on 1 recent transactions recorded by HM Land Registry.
There were no crimes reported in the immediate area during the most recent reporting period. This makes Thornhill a particularly low-crime area.
For anyone interested in property development or monitoring local planning decisions, Thornhill planning applications can be searched by entering a local postcode above. Results include full application details, decision status, and the ability to track applications over time and set planning alerts to help you monitor and review pending planning applications.
Planning Activity in Thornhill
In the last 24 months, 49 planning applications were submitted near Thornhill. Of these, 100% were approved, with an average decision time of 34 days.
This is notably above the national average of approximately 87%, suggesting a relatively permissive planning environment. Applicants near Thornhill may find that well-prepared applications have a strong chance of success.
The average decision time of 34 days is within the government's 8-week statutory target for minor applications, indicating an efficient planning department.
The most common application types near Thornhill were full planning applications (24), tree works (21), discharge of conditions (3). Full planning applications account for 49% of all submissions, covering new builds, change of use, and works that go beyond permitted development rights.
Application Outcomes
- Approved: 25 applications
- Refused: 0 applications
- Awaiting decision: 24 applications
Nearby Towns
Explore planning applications in nearby areas:
- Llanishen planning applications
- Lisvane planning applications
- Rhiwbina planning applications
- Birchgrove planning applications
- Cyncoed planning applications
- Thornhill planning applications
- Heath planning applications
- Pantmawr planning applications
Related Planning Guides
- What Is Planning Permission in the UK? — Planning permission is the formal approval you need from your local council before making certain changes to a building or piece of land.
- What Is Permitted Development? — Permitted development rights allow certain building works and changes of use without the need to apply for planning permission.
- How Long Does Planning Permission Take? — Typical timelines for planning permission decisions in the UK, from submission to approval, and what can cause delays.