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

40,250Searchable applications

321Recorded as pending

86%Approval rate · 33,746 approved or refused records

4,812Refused applications

28,934 approved · 4,812 refused · 2,213 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - GrantedN6/2007/0967/AD
TWO ILLUMINATED FLAGPOLE SIGNS
LIDL, 71-81 MOORS WALK, PANSHANGER, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 2BQ
Received 27 Jun 2007
Decided6/2023/1285/TC
Fell 1 x ivy clad Fir tree in rear garden to ground level and remove stump following snapping limbs to replace with a smaller more suitable species
38 Valley Road Welwyn Garden City AL8 7DN
Received 20 Jun 2023
Decided - GrantedN6/2015/1056/DS
Approval of details reserved by condition 3 (materials) & 7 (archaeological work) of planning permission N6/2014/2385/MA
Former Argos Distribution Centre, 1 Bessemer Road, Welwyn Garden City
Received 19 May 2015
Decided6/2023/0802/TC
Fell plum tree due to size and potential risk of damage Fell Willow tree due to damage Reduce height of conifer tree 1/3 to 1/2.
42 Attimore Road Welwyn Garden City AL8 6LP
Received 14 Apr 2023
Decided6/2017/2674/TPO
Reduce 1 x Maple tree by 30% - Conservation Area
6 Marsden Close Welwyn Garden City AL8 6YE
Received 15 Nov 2017
Decided - Granted6/2025/2085/EMT
T1 Holly - Crown reduce by 3m and crown lift to 3.5m
26 Longcroft Lane Welwyn Garden City AL8 6EA
Received 1 Oct 2025
Decided - Granted6/2022/2005/LAWP
Certificate of lawfulness for a proposed hip to gable end loft conversion with rear dormer roof extension and three rooflights in front roofslope
1 Crawford Road Hatfield AL10 0PF
Received 30 Aug 2022
Decided - GrantedN6/2014/1036/HH
Prior approval for a single storey rear extension
Holly Cottage, Waterend Lane, Ayot St Peter, Welwyn, AL6 9BB
Received 19 May 2014
Decided - Refused6/2020/3161/HOUSE
Erection of a two storey side extension and increase in height of garage roof, including 2 dormer windows
18 New Road Digswell Welwyn AL6 0AG
Received 25 Nov 2020
Decided - GrantedW6/2014/1350/TE
Removal of Two Christmas trees
6 High Oaks Road, Welwyn Garden City, AL8 7BH
Received 17 Jun 2014
Decided - Granted6/2022/2913/HOUSE
Erection of single storey rear extension
92 Sloansway Welwyn Garden City AL7 1ND
Received 29 Dec 2022
Decided - Granted6/2018/1274/HOUSE
Erection of a two storey rear extension and conversion of garage into a habitable room.
16 Daffodil Close Hatfield AL10 9FF
Received 14 May 2018
Decided - Granted6/2016/1336/EM
Erection of single storey side and rear extension following demolition of existing extension
23 Longcroft Lane, Welwyn Garden City, AL8 6EB
Received 1 Jul 2016
Decided - Refused6/2019/1740/HOUSE
Erection of roof terrace above existing single storey rear extension
6A Crawford Road Hatfield AL10 0PG
Received 15 Jul 2019
Decided - Granted6/2018/2533/LAWE
Certificate of lawfulness for existing residential use
154 Thistle Grove Welwyn Garden City AL7 4AQ
Received 28 Sept 2018
Decided - Granted6/2022/1661/EM
Installation of flood barrier
12 Thistle Grove Welwyn Garden City AL7 4AN
Received 14 Jul 2022
Decided - RefusedW6/2014/2088/TE
Removal of 2m section of hedge
104 Mill Green Road, Welwyn Garden City, AL7 3XE
Received 23 Sept 2014
Decided - Granted6/2019/2288/HOUSE
Erection of a single storey side/rear extension, following demolition of conservatory and attached garage, and erection of garden shed
8 Attimore Close Welwyn Garden City AL8 6LN
Received 16 Sept 2019
Decided - Refused6/2021/0659/LAWP
Certificate of lawfulness for the erection of single storey rear extension
10 The Swallows Welwyn Garden City AL7 1BY
Received 1 Mar 2021
Decided - GrantedN6/2004/0385/FP
ERECTION OF REAR CONSERVATORY
PLOT 5, 17 - 19 SCHOOL LANE, WELWYN, HERTFORDSHIRE, AL6 9PQ
Received 12 Mar 2004
Decided - RefusedS6/2005/1532/FP
CHANGE OF USE OF AGRICULTURAL (ATCOST) BARNS TO ARCHIVE STORAGE (CLASS B8).
Lower Woodside Farm Westfield Brookmans Park
Received 9 Dec 2005
Decided - GrantedN6/2013/2343/TC
Removal of Laburnham tree
23 Oakdale, Welwyn Garden City, AL8 7QW
Received 8 Nov 2013
Decided - Refused6/2026/0124/HOUSE
Erection of a single storey rear extension and a front porch conversion
43 Moorlands Welwyn Garden City AL7 4PY
Received 27 Jan 2026
Decided - Withdrawn6/2022/1029/HOUSE
Erection of a part two storey, part single storey side and rear extension, refurbishment of front of the property and the enhancement of front and rear gardens, following the demolition of the existing single storey side store and garage
17 Cranmer Close Little Heath Potters Bar EN6 1LB
Received 3 May 2022

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