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

23,562Searchable applications

313Recorded as pending

86%Approval rate · 19,253 approved or refused records

2,688Refused applications

16,565 approved · 2,688 refused · 1,215 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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

Appeal Decided - Dismissed6/2023/1449/FULL
Erection of new dwelling to include replacement garage for the donor property at number 3 Hangmans Lane.
3 Hangmans Lane Welwy AL6 0TJ
Received 12 Jul 2023
Decided - Granted6/2018/1904/COND
Submission of details pursuant to condition 10 (drainage details) on planning permission 6/2017/0546/FULL
Land at Little Mead Hatfield AL10 0UH
Received 19 Jul 2018
Decided - Granted6/2022/1749/COND
Submission of details pursuant to conditions number 3 (remediation strategy), 4 (monitoring and maintenance plan), 6 (material samples), 10 (external lighting), 13 (remediation verification report), 14 (unexpected contamination), 15 (borehole installation scheme) and 16 (intrusive groundwork consent), on planning permission 6/2021/2260/FULL
Shell Welwyn Garden City Stanborough Road Welwyn Garden City AL8 6XA
Received 25 Jul 2022
Decided - Granted6/2022/2894/HOUSE
Erection of single storey rear extension with roof lantern
23 King James Avenue Cuffley Potters Bar EN6 4LN
Received 22 Dec 2022
Decided - Granted6/2021/2275/HOUSE
Erection of single story rear extension and part conversion of existing garage.
13 Coneydale Welwyn Garden City AL8 7RX
Received 29 Jul 2021
Decided - Granted6/2025/1885/EMT
Reduce height of 1 x 40ft Lawson Cypress by 30%. Reduce 1 x Apple tree to previous points. Remove 1 x Ivy covered Lawson cypress.
3 High Grove Welwyn Garden City AL8 7DW
Received 3 Sept 2025
Decided - Granted6/2021/1699/EMT
T1 Pine - To fell to ground level
37 Valley Road Welwyn Garden City AL8 7DH
Received 27 May 2021
Appeal Decided - Dismissed6/2019/1291/HOUSE
Erection of a single storey side extension, loft conversion alterations to the roof including an increase to its height, the addition of gable ends, the installation 1x rear dormer, alterations to fenestrations and replacement of existing glazed lobby with a new open-sided porch (part retrospective).
59 Garden Road Woolmer Green Knebworth SG3 6JZ
Received 31 May 2019
Decided - Granted6/2026/0820/HOUSE
Erection of single storey rear extension & alterations to openings
17 Claves Crescent Welwyn Garden City AL7 1WN
Received 11 May 2026
Decided - Granted6/2017/1810/HOUSE
Erection of part single storey and part two storey side and rear extension, installation of bay window and internal alterations following demolition of existing rear extension
40 New Park Road Newgate Street Hertford SG13 8RF
Received 11 Aug 2017
Decided - Granted6/2025/0116/LAWP
Certificate of lawfulness for the removal of existing rear dormer window and replacement with a new larger dormer window and fenestration alterations
6 The Limberlost Welwyn AL6 9TS
Received 24 Jan 2025
Decided - Granted6/2024/1645/EM
Erection of a two storey rear extension, single storey side and rear extensions, porch and loft conversion
2 Fearnley Road Welwyn Garden City AL8 6HW
Received 28 Aug 2024
Decided - Granted6/2023/1779/FULL
Conversion of garage to retail space, alteration to garage roof and single storey side extension and external alterations
22 Harmer Green Lane Digswell Welwyn AL6 0AX
Received 23 Aug 2023
Decided - Granted6/2021/3358/EMT
T1 - crown reduce ash tree by 3-4m G1 - mixed species hedge reduce back to previous height
22 Blakemere Road, Welwyn Garden City, AL8 7PJ
Received 29 Nov 2021
Decided - Granted6/2025/2080/COND
Submission of details pursuant to Condition 12 & 29 (Verification Report) on planning permission 6/2021/2857/MAJ
17 Tewin Road Welwyn Garden City AL7 1BD
Received 30 Sept 2025
Decided - Refused6/2017/2519/EM
Erection of part-double, part-single storey rear extension with alterations to roof, installation of 2 rear rooflights and alteration of chimney following demolition of conservatory.
1 Russellcroft Road Welwyn Garden City AL8 6QN
Received 31 Oct 2017
Decided - Granted6/2021/2518/VAR
Variation of conditions 1 (materials) and 3 (drawings) on planning permission (6/2018/2602/HOUSE)
76 Georges Wood Road Brookmans Park AL9 7BU
Received 27 Aug 2021
Decided - Granted6/2016/1471/EM
Crown reduction of eucalyptus tree to reduce back over extended limbs by 2-3m and remove dead wood.
9 High Grove, Welwyn Garden City, AL8 7DW
Received 19 Jul 2016
Decided - Granted6/2017/2248/TPO
0885 – Fell to ground level Scots Pine 0886 – Remove dead wood of Oak over 50mm, crown lift to 4m and cut branches away from Malus 0887 – Fell smaller of the 2 stems from Ash tree to preserve main trunk 0888 – Fell to ground level dead Scots Pine G1 – Remove hanging branches and dead stems, remove dead wood over 50mm, clear fallen branch, remove Ash sucker & sever all Ivy 0889 – Remove dead wood over 50mm from Cherry and raise to 2.5m 0890 – Fell dead Ash tree 0895 – Remove dead hanging branch from Ash 0896 – Fell to ground level dying Ash tree 0897 – Remove dead wood from large Giant Redwood 0898 – Fell to ground level supressed Holly G3 – Fell to ground level 7 dead trees G4 – Sever Ivy from all trees in this group 1098 – Sever Ivy from Giant Redwood 1097 – Remove dead wood over 50mm from Turkey Oak 1096 – Fell to ground level Austrian Pine 1095 – Remove dead wood over 50mm from Ash 1094 – Remove dead wood over 50mm from Ash and raise 1m above garage 1093 – Remove dead wood over 50mm from Giant Redwood S03 – Remove dead wood over 50mm from Oak S04 – Remove dead wood over 50mm from Oak Covered by TPO 217 (1998)
Former Barvin Park Coopers Lane Road Northaw
Received 3 Oct 2017
Decided - Granted6/2018/2884/HOUSE
Erection of a new timber clad garden room to the rear garden and alterations to garage roof
Dimsdale House Essendon Place High Road Essendon
Received 9 Nov 2018
Decided - Granted6/2021/3085/HOUSE
Demolition of existing outbuilding. Erection of a single storey front and side extension and a single storey rear extension.
8 Birchwood Close Hatfield AL10 0PP
Received 28 Oct 2021
Decided - Granted6/2019/2196/COND
Submission of details pursuant to condition 2 (Soft and Hard landscaping) on planning permission 6/2018/2846/HOUSE
6 Honeycroft Welwyn Garden City AL8 6HR
Received 4 Sept 2019
Decided - Granted6/2024/1448/EM
Installation of new composite front door with glazing and two pergola’s to rear
89 Sweet Briar Welwyn Garden City AL7 3EB
Received 31 Jul 2024
Decided - Withdrawn6/2017/2636/PN11
Prior approval for change of use of offices (B1) to residential use (C3) creating 12 residential units
1 3 and 5 Swallow End Welwyn Garden City AL7 1JA
Received 10 Nov 2017

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