England · Local authority

Welwyn Hatfield planning applications

PlanningTrack collects planning applications and decisions from the public planning register of Welwyn Hatfield Borough Council. Search an address, application reference or proposal. Official Welwyn Hatfield website

Collected application statistics

Collected records · All available dates

40,248Searchable applications

321Recorded as pending

86%Approval rate · 33,744 approved or refused records

4,812Refused applications

28,932 approved · 4,812 refused · 2,213 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 6 Nov 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2019/1275/EM
Erection of two storey rear and side extensions
7 Melbourne Court Welwyn Garden City AL8 6LL
Received 29 May 2019
Decided - GrantedW6/2015/0606/TE
Fell Apple tree and Blue Spruce tree
23 Dellcott Close, Welwyn Garden City, AL8 7BB
Received 19 Mar 2015
Decided - Granted6/2016/0759/ADV
Installation of 1no non-illuminated sign to replace existing sign
Unit 6, Trident Place, 1 Mosquito Way, Hatfield, AL10 9BW
Received 21 Apr 2016
Decided6/2019/2198/TC
Fell 1x Sycamore Reduce 1 x Hornbeam by 4m height & 2.5m width
53 Handside Lane Welwyn Garden City AL8 6SH
Received 4 Sept 2019
DecidedN6/2008/1902/TC
WORKS TO MALUS TREE.
LAND ADJACENT TO 19 BIRDCROFT ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE
Received 9 Oct 2008
Decided - RefusedS6/2007/0519/FP
ERECTION OF A SINGLE STOREY AND TWO STOREY SIDE EXTENSION AND REAR CONSERVATORY, AND REAR BALCONY RAILINGS
127 The Ridgeway Cuffley Potters Bar EN6 4BG
Received 18 May 2007
Decided - Granted6/2020/2093/EMT
Removal of 7x Ash trees
8 Parkway Close, Welwyn Garden City, AL8 6HJ
Received 19 Aug 2020
Appeal Decided - Allowed6/2022/0995/HOUSE
Retention of habitable space created from conversion of garage space.
8 Thistle Drive Hatfield AL10 9FQ
Received 27 Apr 2022
Decided - Refused6/2018/1635/OUTLINE
Outline permission for the change of use of land to airfield with runway and support facilities including a clubhouse, hangar and car park with all matters except layout reserved
Historic DeHavilland Grass Runway, Ellenbrook fields, Hatfield Business Park, Hatfield, Herts
Received 21 Jun 2018
Decided - Granted6/2025/0860/HOUSE
Erection of two storey side extension with associated fenestration
1 The Crest Welwyn AL6 0EF
Received 8 May 2025
Decided - GrantedN6/2014/1881/TP
Reduction of crown by 25% to silver birch tree covered by TPO 261 (W1)
49 New Road Digswell Welwyn AL6 0AQ
Received 21 Aug 2014
Decided - Granted6/2018/1446/HOUSE
Erection of two storey side extension, single storey rear extension and conservatory. Installation of side window, rear dormer and rooflight.
1 Youngs Rise Welwyn Garden City AL8 6RT
Received 30 May 2018
To be Considered DMC-Date Agreed6/2026/0991/FULL
Erection of single detached 3 bedroom dwelling to the North East of the original dwelling
1 Hollybush Close Welwyn AL6 0PZ
Received 5 Jun 2026
Decided - Granted6/2020/0773/COND
Submission of details pursuant to condition 2 (sample of materials) and 3 (soft landscaping plan) on planning permission 6/2018/2199/FULL (APP/C1950/W/19/3225810)
94 Harmer Green Lane Digswell Welwyn AL6 0EP
Received 24 Mar 2020
Decided - Granted6/2019/1575/VAR
Variation of condition 1 (approved drawings) on planning permission 6/2018/0731/HOUSE
1 Corner View Welham Green Hatfield AL9 7DH
Received 21 Jun 2019
Decided - Granted6/2017/0762/EM
Erection of rear conservatory following the demolition of existing
4 Palmerston Close Welwyn Garden City AL8 7DL
Received 13 Apr 2017
Decided - Granted6/2015/2418/HOUSE
Erection of side and rear extension
2 Kingsmead, Cuffley, Potters Bar, EN6 4AN
Received 1 Dec 2015
Decided - Granted6/2020/0583/HOUSE
Erection of a single storey rear extension
107 Campion Road Hatfield AL10 9FL
Received 29 Feb 2020
Decided - Granted6/2019/0602/COND
Submission of details pursuant to condition 2 (detailed drawing showing the junction between new and existing roof) on planning permission 6/2018/2663/HOUSE
The Manor House Hill Farm Lane Ayot St Lawrence AL6 9BP
Received 13 Mar 2019
Decided - Refused6/2017/0670/EM
Erection of a single storey rear extension with flat roof, bi-fold doors and 2 rooflights following the demolition of existing store rooms, garden shed and greenhouse. Formation of a porcelain tiled raised patio in rear garden measuring 6x4m and removal of existing mobility aids and "crazy paving" to form flowerbed at front of property.
2 Parkway Close Welwyn Garden City AL8 6HJ
Received 4 Apr 2017
Decided - Granted6/2021/2449/HOUSE
Erection of a single storey rear extension
4 Tempsford Welwyn Garden City AL7 2PB
Received 23 Aug 2021
Decided - Granted6/2022/2058/EMT
T1 Reduce and shape Beech tree on boundary of 7/8 The Valley Green and Dellcott allotments by up to 40%. Tree is c20-25 metres tall
8 The Valley Green Welwyn Garden City AL8 7DQ
Received 5 Sept 2022
Decided - Withdrawn6/2017/0095/PN8
Prior approval for the erection of a single storey rear extension measuring 6m. in depth, 3m. in height and 3m. to the eaves - incorporating chimney flue
9 Little Lake Welwyn Garden City AL7 4RT
Received 18 Jan 2017
Decided - GrantedN6/2007/0885/FP
CHANGE OF USE OF PART OF HIGHWAY TO FORM EXTERNAL DINING AND DRINKING AREA
40 HOWARDSGATE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6BJ
Received 12 Jun 2007

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

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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