PlanningTrack
Get started

England · Local authority

Welwyn Hatfield Borough Council
Planning applications.

Explore collected planning applications and decisions for Welwyn Hatfield Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates
24,319Searchable applications
313Recorded as pending
86%Approval rate · 19,919 approved or refused records
2,763Refused applications

17,156 approved · 2,763 refused · 1,269 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 15 Oct 2026. Counts reflect the last collected status; some records may be out of date.

Local planning information

Council sources checked 14 Sept 2026
Planning information Planning and buildingLocal plan Our Local PlanPre-application advice Pre-application advice (planning applications)Conservation areas Schedule of properties removed from the Welwyn Conservation AreaArticle 4 directions Article 4 Directions

Conservation areas and Article 4 directions

Explore published planning boundaries and follow their source records for designation details. Coverage varies: an empty map does not mean there are no restrictions. Check the council’s current maps and documents before relying on a boundary.

Conservation areas9 mapped area records
Article 4 direction areasNo boundary records available in this collection

Interactive planning map loads with JavaScript. Dataset sources are linked below.

Download Article 4 coverage for all authorities (CSV)

Data downloaded 14 Sept 2026. Display boundaries are simplified and indicative. Map record counts are not a complete count of designations or directions.

Sources: Planning Data conservation areas and Article 4 direction areas. Contains public sector information licensed under the Open Government Licence v3.0.

More application records

  1. Decided - Granted6/2025/2153/EM

    Replacement of windows including some alterations to rear openings, installation of three rooflights and adjustment to the flat roof level to the rear of the existing side extension. Regularisation of the existing flat roof parapets and rainwater goods. Removal of the low brick walls to the raised planter in the driveway and replacement with a grass planter

    73 Attimore Road Welwyn Garden City AL8 6LG

    Received 10 Oct 2025
  2. Decided - Granted6/2017/2732/LB

    Installation of 2x Dormer windows to replace existing, 1x Dormer window to front elevation and internal alterations to facilitate second floor bathroom

    16 Northaw Road West Northaw Potters Bar EN6 4NR

    Received 23 Nov 2017
  3. Decided6/2020/2325/TC

    Fell 1x Silver Birch (T1)

    49 Marsden Road Welwyn Garden City AL8 6YQ

    Received 10 Sept 2020
  4. Decided - Granted6/2021/2364/LAWP

    Certificate of lawfulness for a loft conversion with rear dormer and two front roof lights and erection of an outbuilding.

    31 Lemsford Lane Welwyn Garden City AL8 6YN

    Received 10 Aug 2021
  5. Decided - Granted6/2025/2050/HOUSE

    Erection of first floor side extension insertion of window to existing rear elevation at first floor level

    55 Lowerfield Welwyn Garden City AL7 3JT

    Received 25 Sept 2025
  6. Decided - Granted6/2021/1705/PN8

    Prior approval for the erection of a single storey rear extension measuring 4.5m in depth, 2.86m in height and 2.86m to the eaves.

    248 Bishops Rise Hatfield AL10 9QT

    Received 27 May 2021
  7. Decided - Granted6/2016/0081/LB

    Retention of WC following internal alterations and installation of electrical extractor fan and installation of replacement skylight over bathroom.

    8 Mill Lane Welwyn AL6 9ET

    Received 25 Apr 2016
  8. Decided - Granted6/2023/2474/EMT

    T1 Plum Tree - remove to ground level and grind out the stump. The tree is hard to maintain due to its height and partially blocks the view from the property. It is located near the front of property and adjacent to the boundary wall between nos 141 and 143 Vineyard.

    141 The Vineyard Welwyn Garden City AL8 7PX

    Received 11 Dec 2023
  9. Decided6/2021/0324/TC

    Trim 1 x Conifer tree by 20% (T1) and remove 1 branch. Reduce 1 x Lawson Cypress (T2) by 3m. Reduce 1 x Laurel Hedge (T3) by 2m and cut back by 1m.

    2 Thumbswood Welwyn Garden City AL7 4QE

    Received 2 Feb 2021
  10. Decided - Granted6/2018/1943/EM

    Installation of new front windows, enlargement of canopy over front porch, installation of side roof lights and replacement of rear window to French doors

    17 Pentley Park Welwyn Garden City AL8 7RT

    Received 24 Jul 2018
  11. Decided - Withdrawn6/2018/0122/EM

    Reduce canopy of rear Oak tree by 30 %, reduce canopy of rear Walnut tree by 30 %, reduce rear Conifer tree by 3m and fell rear Conifer tree

    14 Eastor Welwyn Garden City AL7 1PN

    Received 15 Jan 2018
  12. Decided - Refused6/2017/2121/HOUSE

    Erection of single storey, part two storey side and rear extension plus alterations to openings following demolition of existing conservatory

    22 Duncan Close Welwyn Garden City AL7 3XP

    Received 20 Sept 2017
  13. Decided - Granted6/2024/2392/FULL

    Replacement of existing boiler with 3 Air Source Heat Pumps and replacement of all windows to Block G

    Chancellors School Pine Grove Brookmans Park AL9 7BN

    Received 17 Dec 2024
  14. Decided - Granted6/2018/2096/HOUSE

    Erection of a single storey, part two storey rear extension and alterations to openings on existing rear and side elevations

    7 New Road Welwyn Garden City AL8 7TX

    Received 13 Aug 2018
  15. Decided - Granted6/2023/1006/HOUSE

    Erection of garage outbuilding and single storey rear extension following demolition of existing outbuildings and conservatory

    44 Mill Lane Welwyn AL6 9ET

    Received 11 May 2023
  16. Decided - Granted6/2023/0645/EM

    Rebuild of garage (3 walls and flat roof) on like for like basis following a car collision

    18 Beehive Lane Welwyn Garden City AL7 4BQ

    Received 22 Mar 2023
  17. Decided6/2018/0386/TPO

    Trim top and sides of 1 x Yew tree, reduce overhang of 1 x Apple tree and reduce overhang of 1 x Yew tree to neighbours garden by 2m and trim top and sides all by 25 % - conservation area

    5 Homerfield Welwyn Garden City AL8 6QZ

    Received 6 Feb 2018
  18. Decided - Granted6/2022/1622/COND

    Submission of details pursuant to condition 2 (samples of materials) on planning application 6/2022/0396/HOUSE

    Hornbeam House Ayot St Peter Road Ayot St Peter Welwyn AL6 9BG

    Received 8 Jul 2022
  19. Decided - Granted6/2018/3249/HOUSE

    Erection of a single storey rear extension

    5 Lindbergh Welwyn Garden City AL7 2 NQ

    Received 20 Dec 2018
  20. Decided6/2022/1590/TC

    Rear: 1 x Goat Willow to fell to ground level. Front: 1 x Oak to reduce by 1.2m height & width.

    57 Woodhall Lane Welwyn Garden City AL7 3TG

    Received 6 Jul 2022
  21. Decided - Refused6/2019/1654/PN8

    Prior approval for the erection of a single storey rear extension measuring 8m in depth, 3.375m in height and 2.52m to the eaves

    Spindlebury Cottage Ottway Walk AL6 9AS

    Received 3 Jul 2019
  22. Decided - Granted6/2022/1776/TPO

    Cut back overhanging branches of 3 x Sycamore and 4 x Hornbeam trees, to boundary line, overhang approximately 4m in length. Trees located in woodland to the rear covered by TPO 657 (2017) W1

    11 Birch Grove Welwyn Hertfordshire AL6 0QP

    Received 28 Jul 2022
  23. Decided - Granted6/2023/1890/EMT

    T1 - 1 x Silver Birch. 2m reduction to limbs growing over footpath to create a more upright shape

    100 Ridgeway Welwyn Garden City AL7 2DA

    Received 12 Sept 2023
  24. Decided - Granted6/2020/3284/EM

    Rear single storey extension

    64 Attimore Road Welwyn Garden City AL8 6LP

    Received 7 Dec 2020

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

Researching a proposal in Welwyn Hatfield Borough Council

Start with the address or application reference. Open a record to read the proposal, dates and available documents, then check the official register for the latest plans and consultation details. If nothing appears, check coverage before treating the result as a complete planning history.

How to search planning applications

Guides to planning records

All planning guides

  • Understanding planning · 13 min read

    Planning application documents: what to read first

    Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.

    UK research
    Published Updated

  • Understanding planning · 13 min read

    Planning permission drawings: how to read plans

    Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.

    UK research
    Published Updated

  • Property research · 13 min read

    Planning approval rates: how to read council statistics

    Understand planning approval rates with an interactive calculator, worked examples and comparison table. Check sample sizes, outcomes and coverage before comparing.

    UK research
    Published Updated

What these statistics cover

These figures describe applications collected by PlanningTrack for Welwyn Hatfield Borough Council, across all dates currently available. They are a partial dataset, rather than an authority-wide performance measure. The date range does not establish continuous historical coverage.

The approval percentage is approved records divided by approved plus refused records. Pending, withdrawn and unknown outcomes are excluded. No percentage is shown until there is an approved or refused record.

Check collection coverage

More planning authorities in England

Browse all authorities