Home Property Search Planning by Council Planning by Town Latest Planning Applications Architects Building Contractors Conservation Areas Listed Buildings Heritage at Risk Flood Risk Enterprise Pricing Blog About FAQ Sign In Sign Up

Thornhill, Cardiff Planning Applications

Recent planning applications near Thornhill, Cardiff.

Cardiff · Wales · settlement

View council

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 021C

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. - 9 Glendale Avenue Llanishen Cardiff CF14 5JP
    Creation of Parking, installation of permeable hardstanding and removal of front boundary wall to create vehicle access.
    Status: Undecided | Type: Full | Council: Cardiff | Date: 2026-04-14
    View full details
  2. - Cartref 85 - 91 Station Road Llanishen Cardiff CF14 5UU
    Discharge of Condition 3 (Solar Panels) of 25/02847/VAR
    Status: Undecided | Type: Conditions | Council: Cardiff | Date: 2026-04-08
    View full details
  3. - 44 Llanon Road Llanishen Cardiff CF14 5AH
    Single storey rear extension with minor external alterations
    Status: Undecided | Type: Full | Council: Cardiff | Date: 2026-02-26
    View full details
  4. - 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
  5. - 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
  6. - Christ The King Primary Caretakers House 10 Everest Avenue Llanishen Cardiff CF14 5AS
    Change vacated Caretaker property into a staff area for use by the school.
    Status: Permitted | Type: Full | Council: Cardiff | Date: 2025-03-04
    View full details
  7. - Christ The King Primary School Everest Avenue Llanishen Cardiff CF14 5AS
    New nursery at Christ The King Catholic Primary School consisting of a single storey one classroom standalone structure with associated external works.
    Status: Permitted | Type: Full | Council: Cardiff | Date: 2024-12-23
    View full details
  8. - 14 Aldwych Close Thornhill Cardiff CF14 9DR
    Side dormer roof extensions
    Status: Permitted | Type: Full | Council: Cardiff | Date: 2023-08-16
    View full details
  9. - 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

Use the filter and sort options to search descriptions, addresses, and references. Sort by newest or oldest applications.

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.

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, 48 planning applications were submitted near Thornhill. Of these, 100% were approved, with an average decision time of 41 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 41 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 (25), tree works (19), discharge of conditions (3). Full planning applications account for 52% of all submissions, covering new builds, change of use, and works that go beyond permitted development rights.

Application Outcomes

  • Approved: 29 applications
  • Refused: 0 applications
  • Awaiting decision: 19 applications

Nearby Towns

Explore planning applications in nearby areas:

  • Llanishen planning applications
  • Lisvane planning applications
  • Birchgrove planning applications
  • Cyncoed planning applications
  • Heath planning applications
  • Rhiwbina planning applications
  • Roath Park planning applications
  • Thornhill 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.

Planning Signal - Search planning applications across 380+ UK councils.

Home Property Search Planning by Council Planning by Town Latest Applications Architects Directory Contractors Directory Conservation Areas Listed Buildings Heritage at Risk Flood Risk Pricing Enterprise Blog Knowledge Hub About FAQ Privacy Policy Terms of Service Sitemap Planning Portals Sign In Create Account