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

27,894Searchable applications

307Recorded as pending

87%Approval rate · 23,029 approved or refused records

3,102Refused applications

19,927 approved · 3,102 refused · 1,495 withdrawn. Received dates in our records: 5 Jan 2005 to 13 Oct 2026. Most recent record check: 17 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 Counts reflect the last collected status; some records may be out of date.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 building Local plan Our Local Plan Pre-application advice Pre-application advice (planning applications)Conservation areas Schedule of properties removed from the Welwyn Conservation Area Article 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

Decided - Refused6/2020/2793/LAWP
Lawful development certificate for the formation of dormer to rear roof slope
19 Hanyards Lane Cuffley Potters Bar EN6 4AT
Received 26 Oct 2020
Decided - Granted6/2024/0978/HOUSE
Erection of a single storey side/rear extension with insertion of rooflights, alterations to openings to front elevation and part garage conversion
3 Leonard's Close Welwyn AL6 0QJ
Received 24 May 2024
Decided - Refused6/2021/1771/EM
Garage conversion and erection of first floor extension.
22 Rooks Hill Welwyn Garden City AL8 6ET
Received 7 Jun 2021
Decided - Granted6/2019/1465/HOUSE
Erection of single storey side and rear extension
26 Furzefield Road Welwyn Garden City AL7 3RJ
Received 17 Jun 2019
Decided - Refused6/2016/0399/FULL
Erection of 1no five bedroom dwellinghouse, including alterations to front and rear garden following demolition of existing dwellinghouse
91 Brookmans Avenue, Brookmans Park, Hatfield, AL9 7QG
Received 8 Mar 2016
Decided - Granted6/2023/2273/TPO
T1 Sweet Chestnut tree - Fell to ground level T2 Section of mixed trees in front garden to be reduced to height of garage
23 Woodland Way Welwyn Hertfordshire AL6 0RX
Received 9 Nov 2023
Decided - Granted6/2022/2830/EMT
T1 x Magnolia to fell to ground level and 1 x Privet/Holly hedge to cut to ground level
81 Knightsfield Welwyn Garden City AL8 7JE
Received 14 Dec 2022
Decided - Split6/2023/0094/COND
Submission of details pursuant to condition number 7 (accessible housing), on planning permission S6/2015/1342/PP
King George V Playing Field, Northaw and Cuffley Bowling Club Northaw Road East Cuffley Potters Bar EN6 4RD
Received 13 Jan 2023
Decided - Granted6/2017/2790/FULL
Alterations to access and parking arrangements
Land adjacent to Busy Bees Nursery Shire Park Welwyn Garden City
Received 29 Nov 2017
Decided - Granted6/2018/1292/HOUSE
Erection of a single side storey extension following demolition of an existing car port
81 Hertford Road Digswell Welwyn AL6 0BU
Received 16 May 2018
Decided6/2024/0269/TC
1 x Silver birch to reduce by 3m in height and 1.5m in width 1 x Robina to reduce by around 4m in height and 2m in width
2 Holly Hall Court Church Street Welwyn AL6 9LH
Received 8 Feb 2024
Decided - Granted6/2022/1257/EM
Replacement of all windows and doors to the property to improve environmental efficiency and meet current health and safety requirements. Removal of internal secondary glazing. Six windows, one circle window, one door and window combination, one set of French doors and one composite front door. All windows and doors remain the same dimensions. All windows (except circle window) to be liniar. All windows to be double glazed with trickle vents and night latches. Circle window to be returned to white casement. Rear facing windows and doors to return to original style with white casements and white bars.
49 Howlands Welwyn Garden City AL7 4RA
Received 27 May 2022
Decided - Granted6/2021/2844/TPO
A Sycamore to remove (dead). B Sycamore to remove. C Holy to reduce back by 3 meters encouraging the tree more like a high bush than how this currently dog legs over your shed. D Sycamore to remove dead wood and reduce crown by 2-3 meters E Silver Birch to be removed (dead) F Ash reduction by 4 meters off the top and where this leans forward, to help balance tree G Horse chestnut to Re reduce not as low as when this was done many years ago roughly a 5 meter crown reduction, H Oak to 15% crown thin roughly 2 meter reduction. I Oak to 2-3 meter reduction and 15% crown thin. (TPO 468 W1)
Land to the rear of 53 Pine Grove Brookmans Park AL9 7BL
Received 4 Oct 2021
Decided - Granted6/2023/1003/COND
Submission of details pursuant to the discharge of condition 13 (Hard Landscaping) on planning permission 6/2019/2431/MAJ
Link Drive Car Park Link Drive Hatfield AL10 8TY
Received 11 May 2023
Decided - Split6/2024/0651/COND
Submission of details pursuant to Condition 6 (Archaeological Written Scheme of Investigation) on planning permission 6/2022/2317/MAJ
Videne Hawkshead Road Little Heath Potters Bar EN6 1LX
Received 5 Apr 2024
Decided - Granted6/2023/0682/COND
Submission of details pursuant to Condition 19 (car parking) on planning permission 6/2021/1987/VAR.
1 Town Centre Hatfield AL10 0JZ
Received 27 Mar 2023
Decided6/2023/0103/TC
T1 1 x Oak to dismantle in sections to ground level. T2 1 x Oak to reduce by approximately 3m in height and 3m in width, remove major deadwood consisting of branches greater than 30mm in diameter and 500mm in length
15 Sherrardspark Road Welwyn Garden City AL8 7JW
Received 16 Jan 2023
Decided - GrantedN6/2014/1251/FP
Erection of single storey rear extension
1 Long Ley, Welwyn Garden City, AL7 2HE
Received 3 Jun 2014
Decided - Refused6/2019/2902/HOUSE
Erection of single storey front extension
2A Whitehill Ayot St Peter Welwyn AL6 9AF
Received 15 Nov 2019
Decided - Granted6/2024/0481/EMT
Pruning of Ash tree in garden. Reducing back to previous pruning points. Approximately 3m in length to shape
The Haven Digswell Lane Welwyn AL6 0SP
Received 12 Mar 2024
Decided - Granted6/2026/0502/EMT
1 x Beech to reduce height by approximately 2m, reduce lateral branches over cricket club by 2.5m
292 Knightsfield Welwyn Garden City AL8 7NQ
Received 17 Mar 2026
Decided - Granted6/2022/2073/COND
Submission of details pursuant of condition 8 (external lighting) on planning permission 6/2021/3077/VAR
75 Oaklands Avenue Brookmans Park Hertfordshire AL9 7UH
Received 6 Sept 2022
Decided - Granted6/2016/0100/HOUSE
Erection of single storey rear extension and part two storey rear extension
53 Bluebridge Road, Brookmans Park, Hatfield, AL9 7UW
Received 20 Jan 2016
Decided - Granted6/2024/0677/FULL
Replacement of mechanical services plant with extension to the plant compound
European Knowledge Centre Eisai Europe Limited Mosquito Way Hatfield AL10 9SN
Received 10 Apr 2024

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 16 Jul 2026Updated 13 Sept 2026
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 6 Aug 2026Updated 13 Sept 2026
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 13 Aug 2026Updated 13 Sept 2026

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