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

22,950Searchable applications

313Recorded as pending

86%Approval rate · 18,693 approved or refused records

2,632Refused applications

16,061 approved · 2,632 refused · 1,183 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 14 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 Counts reflect the last collected status; some records may be out of date.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 - Withdrawn6/2017/0790/PN8
Prior approval for the erection of a single storey rear extension measuring 3.7m in depth, 3.4m in height and 3.4m to the eaves, following the demolition of existing conservatory.
21 Kentish Lane Brookmans Park Hatfield AL9 6NG
Received 18 Apr 2017
Decided - Granted6/2022/2876/EM
Erection of a part single, part two storey rear extension and part single, part two storey side extension following removal of existing conservatory
15 High Oaks Road, Welwyn Garden City, AL8 7BJ
Received 20 Dec 2022
Decided - Refused6/2023/0170/HOUSE
Erection of new rear dormer extension as continuation of existing rear dormer
11A Chestnut Walk Welwyn AL6 0SB
Received 24 Jan 2023
Decided - Withdrawn6/2018/2439/EM
Erection of rear dormer and conversion of loft with installation of 2no. front roof lights
103 Longcroft Lane Welwyn Garden City AL8 6EL
Received 24 Sept 2018
Appeal Decided - Dismissed6/2025/1297/VAR
Variation of condition 4 (hours of use of premises) and 7 (drawing numbers) on planning permission 6/2019/0402/FULL
Unit B Fretherne Road Welwyn Garden City AL8 6PZ
Received 20 Jun 2025
Decided - Granted6/2020/0729/TPO
Reduce crown of Horse Chestnut by 2m and thin by 20%
88 Moffats Lane Hatfield AL9 7RW
Received 16 Mar 2020
Decided - Refused6/2019/0137/PN8
Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3m in height and 3m to the eaves
1 Hall Grove Welwyn Garden City AL7 4PJ
Received 22 Jan 2019
Decided - Granted6/2026/0797/HOUSE
Part two storey and part single storey rear extensions, alterations to openings and erection of detached garden room
111 Wellcroft Road Welwyn Garden City AL7 3JX
Received 6 May 2026
Decided - Granted6/2025/1039/EMT
Cotoneaster to reduce height by approximately 2m and width by 1.5m.
89 Pentley Park Welwyn Garden City AL8 7SL
Received 2 Jun 2025
Decided6/2021/0952/TC
Reduce 2 x Hornbeam by 2m. Fell 1 x Western Red Cedar.
2 Densley Close Welwyn Garden City AL8 7JX
Received 24 Mar 2021
Decided - Granted6/2025/0356/EMT
1 x Apple to reduce by 3m height and width to retain size, now its overhanging green house with falling apples breaking the glass
4 Meadow Green Welwyn Garden City AL8 6SS
Received 25 Feb 2025
Decided - Granted6/2024/0586/COND
Submission of details pursuant to Condition 1 (Construction Management Plan) & Condition 2 (Provision of Fire Hydrants) on planning permission 6/2022/0709/MAJ
17 Tewin Road Welwyn Garden City AL7 1BD
Received 25 Mar 2024
Decided - Refused6/2025/1071/VAR
Variation of condition number 6 (Drawings numbers) on planning permission 6/2023/0622/FULL
4 Brookmans Avenue Brookmans Park AL9 7QJ
Received 6 Jun 2025
Decided6/2019/0926/TPO
Reduce crowns of a group of Ash trees by approximately 3 metres.
5 Parkway Close Welwyn Garden City AL8 6HJ
Received 16 Apr 2019
Decided - Granted6/2023/1207/EM
Erection of garden room
61 Crossway, Welwyn Garden City, AL8 7ED
Received 6 Jun 2023
Decided - Split6/2017/2401/COND
Confirmation that conditions have been complied with S6/2005/0132/FP - 01/05/2005
129-133 Cunningham Avenue Hatfield AL10 9JZ
Received 18 Oct 2017
Decided - Split6/2017/1260/COND
Submission of details pursuant to conditions 2 (materials) and 3 (i-iv) (eaves, windows doors and wall details) on planning permission 6/2016/1650/LB dated 19/12/2016
Great Nast Hyde House Wilkins Green Lane Hatfield AL10 9RB
Received 9 Jun 2017
Decided - Granted6/2023/1588/EM
Installation of new double doors with changes to 2 rear windows with removal of side door.
117 Woodhall Lane, Welwyn Garden City, AL7 3TP
Received 31 Jul 2023
Decided - Refused6/2021/3244/LAWP
Certificate of lawfulness for single storey side extension to form Granny Annexe and side facing dormer.
3 Fawn Court Hatfield AL9 5DJ
Received 12 Nov 2021
Decided - Granted6/2017/1011/EM
Erection of brick built front porch with dual pitch roof, following the demolition of existing uPVC porch.
149 Blythway Welwyn Garden City AL7 1DS
Received 11 May 2017
Decided - Refused6/2019/0922/HOUSE
Erection of a front extension to garage with a pitched roof
78 Bell Lane Brookmans Park Hatfield AL9 7AY
Received 16 Apr 2019
Decided - Granted6/2022/0017/EM
Erection of an outbuilding in rear garden for use as an office
3 Handside Green Welwyn Garden City AL8 6SQ
Received 5 Jan 2022
Decided - Granted6/2021/2542/EM
Replacement of rotting front-door with a new door of similar style to other doors on the street
53 Parkway Welwyn Garden City AL8 6JF
Received 31 Aug 2021
Decided - Withdrawn6/2023/1747/LB
Erection of an outbuilding for ancillary use to the main dwelling
The Lodge 2 Northaw Place Coopers Lane Northaw Potters Bar EN6 4NQ
Received 18 Aug 2023

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