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

40,297Searchable applications

284Recorded as pending

86%Approval rate · 33,821 approved or refused records

4,819Refused applications

29,002 approved · 4,819 refused · 2,219 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 8 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2015/1813/TC
Reduce Acer tree back to previous pruning points
19 Mandeville Rise Welwyn Garden City AL8 7JT
Received 26 Aug 2015
Decided - Granted6/2023/2224/HOUSE
Erection of a single storey side extension, front porch extension, alterations to roof, replacement fenestration, alterations to front boundary wall and formation of new parking space and partial garage conversion to garden room
1 Orchard Road Welwyn AL6 9EX
Received 1 Nov 2023
Decided - Granted6/2019/1219/HOUSE
Erection of single story rear extension
7 Kentish Lane Brookmans Park Hatfield AL9 6NG
Received 20 May 2019
Decided - Refused6/2018/2408/LB
Installation of rooflights & replacement of UPVC windows with white metal windows
31 Ayot Green Ayot St Peter Welwyn AL6 9AB
Received 19 Sept 2018
Decided - Granted6/2021/1041/EMT
Reduce 45ft Hornbeam by 30%
16 Pentley Park Welwyn Garden City AL8 7RU
Received 29 Mar 2021
Decided - GrantedW6/2013/2341/TE
Removal of Laburnham tree
23 Oakdale, Welwyn Garden City, AL8 7QW
Received 8 Nov 2013
Decided - GrantedS6/2004/1270/FP
SINGLE STOREY REAR EXTENSION
30 Elm Drive Hatfield AL10 8NU
Received 20 Aug 2004
Decided - GrantedS6/2007/0807/FP
ERECTION OF REAR CONSERVATORY.
17 Mount Pleasant Close Hatfield AL9 5BZ
Received 25 May 2007
Decided - GrantedN6/2014/1517/FP
Erection of rear conservatory following demolition of existing conservatory
155 Howlands, Welwyn Garden City, AL7 4RL
Received 2 Jul 2014
Decided - Refused6/2025/0853/TPO
Sycamore x 1 to fell. (TPO 24 (1976) A3)
33 Mardley Hill Welwyn AL6 0TT
Received 7 May 2025
Decided - Granted6/2020/3230/HOUSE
Erection of a timber single storey granny annexe for ancillary use to the main dwelling
6 Bridge Road Knebworth SG3 6JG
Received 2 Dec 2020
Decided - Granted6/2025/2194/TPO
TPO 24 T1 - Sweet Chestnut - Reduce Sweet Chestnut by 2.5m this tree due to large cavity at base of tree. T2 - Oak Tree - Reduce one Oak tree by 1.5m due to excessive shading
2A The Drive Welwyn AL6 0TR
Received 15 Oct 2025
Decided - Granted6/2023/0635/ADV
Installation of 6 x vinyl banners
Queenswood School Shepherds Way Brookmans Park AL9 6NS
Received 22 Mar 2023
Decided - GrantedN6/2008/1804/FP
ERECTION OF SINGLE STOREY REAR EXTENSION.
18 The Chase Welwyn AL6 0QT
Received 23 Sept 2008
Decided - Granted6/2021/3162/TPO
To reduce the height of T1 tree covered by TPO 727 (2018) by 5m, reduce sides by 1m and remove all the epicormic growth from the trunk of the tree. With all work carried out to BS. 3998
22 Roundwood Drive Welwyn Garden City AL8 7JZ
Received 4 Nov 2021
Decided - Granted6/2021/1065/HOUSE
Window and door alterations to front, side and rear elevations and new rooflight to the study room
68 Attimore Road Welwyn Garden City AL8 6LP
Received 31 Mar 2021
Decided - GrantedN6/2008/2110/FP
RETENTION OF TWO STABLES
7 Normans Lane Welwyn AL6 9TQ
Received 7 Nov 2008
Decided - Granted6/2026/0337/HOUSE
Erection of first floor rear extension, loft conversion with dormers to front and rear and insertion of roof lights
4 Old Dairy Yard Welwyn Garden City AL7 4BY
Received 23 Feb 2026
Decided - GrantedN6/2007/1072/FP
ERECTION OF ONE DWELLING AFTER DEMOLITION OF EXISTING
45 Robbery Bottom Lane Welwyn AL6 0UL
Received 18 Jul 2007
Decided - Withdrawn6/2019/2275/HOUSE
Erection of a single storey rear extension
28 Lemsford Village Welwyn Garden City AL8 7TN
Received 13 Sept 2019
Decided - Refused6/2025/0802/LAWP
Certificate of lawfulness for change of use from residential use (Class C3a) to respite care home (Class C3b)
6 Bishops Close Hatfield AL10 9PW
Received 28 Apr 2025
Decided - GrantedS6/2013/0177/FP
Change of use from Office (B1) to Taxi Cab Office (Sui Generis)
HERTFORDSHIRE METER CO LTD, 10 Bury Road, HATFIELD, AL10 8BJ
Received 25 Jan 2013
Decided - GrantedW6/2013/1693/TE
Removal of Frisia tree from rear garden
114 Parkway, Welwyn Garden City, AL8 6HN
Received 15 Aug 2013
Appeal Decided - Dismissed6/2020/1260/HOUSE
Retention of existing stables and alteration to roof pitch to previously approved angle.
7 Danesbury Lane Welwyn AL6 9SG
Received 4 Jun 2020

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