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

20,338Searchable applications

298Recorded as pending

86%Approval rate · 16,440 approved or refused records

2,315Refused applications

14,125 approved · 2,315 refused · 1,034 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 12 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2024/1730/EM
Replacement of existing shed like for like
25 Mandeville Rise Welwyn Garden City AL8 7JT
Received 9 Sept 2024
Decided - Granted6/2024/0237/HOUSE
Erection of a front boundary wall, railings and sliding gate
115 Tolmers Road Cuffley Potters Bar EN6 4JL
Received 5 Feb 2024
Decided - Granted6/2018/3160/EM
Erection of first floor front, part single part two storey rear extension, partial garage conversion and alterations to openings
30 Heather Road Welwyn Garden City AL8 6XU
Received 11 Dec 2018
Decided - Withdrawn6/2018/1723/LB
Construction of detached car port
16-18 Hyde Cottage Cromer Hyde Lane Lemsford Welwyn Garden City AL8 7XE
Received 28 Jun 2018
Decided - Granted6/2023/1598/HOUSE
Erection of a single storey side extension with three rooflights, installation of three front rooflights and one rear dormer to facilitate the conversion of loft into habitable space
105 Tolmers Road Cuffley Potters Bar EN6 4JL
Received 1 Aug 2023
Decided - Granted6/2022/0118/COND
Submission of details pursuant to condition 2 (boundary treatment), 4 (ecology), 7 (road details), 8 (tracking), 9 (landscaping), 12 (biodiversity enhancement), 19 (lighting) and 23 (contamination) on planning application 6/2017/1641/MAJ
Onslow St Audreys School Old Rectory Drive Hatfield AL10 8AB
Received 18 Jan 2022
Decided - Granted6/2024/0136/EMT
Ash tree crown reduce by 30% to maintain to previous size.
74 Lodgefield Welwyn Garden City AL7 1SE
Received 23 Jan 2024
Decided6/2023/0614/TC
Fell dead eucalyptus tree
25 Parkside Welwyn AL6 9DQ
Received 20 Mar 2023
Decided - Granted6/2023/0130/HOUSE
Raising of the existing roof line incorporating new rooflights, new dormer, external alterations to existing windows and doors and the creation of a new parking space, erection of canopy following demolition of the existing front porch
69 Robbery Bottom Lane Welwyn AL6 0UL
Received 18 Jan 2023
Decided6/2018/2526/FULL
Retention of an existing barn for the purposes of agricultural storage and re-profiling of land to original contours
White Lodge Farm Bulls Lane Hatfield
Received 2 Oct 2018
Decided - Granted6/2024/2053/HOUSE
Erection of single storey rear extension
22 Lowerfield Welwyn Garden City AL7 3JT
Received 24 Oct 2024
Decided - Refused6/2020/2287/HOUSE
Single storey rear extension
18 Firs Wood Close Northaw Potters Bar EN6 4BY
Received 8 Sept 2020
Decided - Refused6/2019/0430/HOUSE
Enlargement of existing gable and installation of 3 rooflights to facilitate loft conversion
6 Glebeland Hatfield AL10 8AA
Received 26 Feb 2019
Decided - Granted6/2022/2338/EMT
1 x Ash to dismantle in sections to ground level - Ash dieback is present 1 x Oak to reduce approximately 3/4 branches by approximately 2m to improve light and space to neighbouring gardens
26 Beehive Green Welwyn Garden City AL7 4BG
Received 6 Oct 2022
Decided - Granted6/2022/0522/EMH
Update front door to a composite door. Retaining colour and design of existing door to be in keeping with the design of the house. Intended to keep like for like where possible but replacing for a more energy efficient and secure door.
19 Elmwood Welwyn Garden City AL8 6LD
Received 4 Mar 2022
Decided6/2021/1148/TC
1 x Sycamore - fell
48 Valley Road Welwyn Garden City AL8 7DN
Received 8 Apr 2021
Decided - Granted6/2022/2758/HOUSE
Erection of part single, part two storey rear extension, following demolition of conservatory and alteration to opening to rear elevation. Plus front porch extension.
31 Sweet Briar Welwyn Garden City AL7 3DU
Received 5 Dec 2022
Decided - Granted6/2021/2906/TPO
30% reduction of crown of oak tree (T3) TPO 181 for tree health and maintenance.
6 Leefe Way Cuffley Potters Bar EN6 4DF
Received 8 Oct 2021
Decided - Granted6/2026/0134/EMT
1 x Cherry to fell.
44 Longcroft Lane Welwyn Garden City AL8 6EF
Received 27 Jan 2026
Decided - Granted6/2019/1375/COND
Submission of details pursuant to condition 1 (sample of materials) 2 (hard and soft landscaping plan) 5 (cycle storage) and 6 (pedestrian footpath between the public footway and the on-site footpath) on planning permission 6/2018/0858/FULL
Presbytery 141 Woodhall Lane Welwyn Garden City AL7 3TP
Received 4 Jun 2019
Decided - Granted6/2023/0934/EMH
Erection of single storey rear extension and driveway alterations
7 Boundary Lane Welwyn Garden City AL7 4EA
Received 2 May 2023
Decided - Granted6/2025/0006/TPO
T1 x Yew to lift branches to provide a 4m clearance to allow the installation of the new shed (TPO 1051 (2023) T1)
38 Welwyn Hall Gardens Welwyn AL6 9LF
Received 2 Jan 2025
Decided - Refused6/2019/0589/HOUSE
Erection of first floor rear extension
66 Heathcote Avenue Hatfield AL10 0RJ
Received 11 Mar 2019
Decided - Granted6/2023/1387/ADV
Installation of 1no. illuminated sign and 1no. projected illuminated sign
28 Stonehills Welwyn Garden City AL8 6PD
Received 4 Jul 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