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

40,146Searchable applications

300Recorded as pending

86%Approval rate · 33,676 approved or refused records

4,802Refused applications

28,874 approved · 4,802 refused · 2,208 withdrawn. Received dates in our records: 29 Apr 1948 to 26 Oct 2026. Most recent record check: 31 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2020/3138/HOUSE
Erection of a front porch
8 Gorse Close Hatfield AL10 9DW
Received 24 Nov 2020
Decided - Granted6/2020/0677/HOUSE
Erection of front extension to garage, installation of front fencing and erection of outbuilding in rear garden
14 Stag Green Avenue Hatfield AL9 5DZ
Received 10 Mar 2020
Decided - Granted6/2016/2676/LAWP
Certificate of Lawfulness for the erection of a two storey rear extension, single storey side extension and detached garage
50 Wild Hill Hatfield AL9 6DS
Received 19 Dec 2016
Decided - GrantedN6/2008/0830/FP
ERECTION OF SINGLE STOREY REAR EXTENSION
29 Canonsfield Road Welwyn AL6 0PY
Received 24 May 2008
Decided - GrantedN6/2014/2032/FP
Alterations to windows and front entrance
1 Ninnings Lane Rabley Heath Welwyn AL6 9TD
Received 12 Sept 2014
Decided - Withdrawn6/2024/0966/EM
Erection of single storey rear extension following demolition of conservatory and two storey side extension with removal of chimney
24 Springfields Welwyn Garden City AL8 6XP
Received 23 May 2024
Decided - Refused6/2020/2180/LAWP
Certificate of lawfulness for installation of 1x side dormer to facilitate loft conversion
9 Hook Lane Northaw Potters Bar EN6 4DA
Received 27 Aug 2020
Decided - Granted6/2020/1736/EMT
Fell 1 x Oak tree (T3)
4 Densley Close Welwyn Garden City AL8 7JX
Received 15 Jul 2020
Decided - RefusedN6/2005/1548/AD
ERECTION OF NON ILLUMINATED SWING SIGN AND TWO PERSPEX SIGNS
28A High Street Welwyn AL6 9EQ
Received 14 Dec 2005
Decided - GrantedS6/2015/1176/FP
Erection of a single storey rear extension
35 Brookside Crescent Cuffley Potters Bar EN6 4QW
Received 1 Jun 2015
Appeal Decided - Dismissed6/2018/0205/EM
Erection of front porch
4 The Commons Welwyn Garden City AL7 4RP
Received 23 Jan 2018
Decided - Granted6/2022/1288/HOUSE
Erection of a single storey timber clad contemporary garden building.
The Spinney High Road Essendon Hatfield AL9 6HP
Received 31 May 2022
Decided - Withdrawn6/2020/0314/HOUSE
Erection of a two storey side and rear double garage extension and alterations to openings following demolition of existing garage
11 The Green Welwyn AL6 9EA
Received 4 Feb 2020
Decided - GrantedS6/2007/0368/FP
PROPOSED CHANGE OF USE OF AMENITY LAND TO RESIDENTIAL ACCESS FOOTPATHS
LAND ADJOINGING, 52 HIGH ROAD, AND IN FRONT OF 52A AND 52B HIGH ROAD, ESSENDON, HATFIELD, HERTFORDSHIRE, AL9 6AP
Received 6 Mar 2007
Decided6/2020/2121/INT
Hertfordshire African and Caribbean society Meet and Greet picnic
Green opposite the Howard Centre, Howardsgate, Welwyn Garden City AL8 6HA
Received 13 Aug 2020
Decided - Granted6/2018/0918/EM
Reduce 1 x Copper Beech tree by 4m height & 2.5m width
33 Bridge Road Welwyn Garden City AL8 6UG
Received 9 Apr 2018
Appeal Decided - Dismissed6/2020/0741/HOUSE
Erection of single storey front and rear extension, two storey side extension following the demolition of the existing side extension
13 Elmoor Avenue Welwyn AL6 9PG
Received 16 Mar 2020
Decided - Refused6/2019/0757/LAWE
Certificate of lawfulness for use of land and buildings for storage of plant and equipment
83 Codicote Road Welwyn AL6 9TY
Received 29 Mar 2019
Decided - GrantedN6/2009/1857/TP
CROWN LIFT HORNBEAM TREE (T10) BY 20%, CROWN LIFT OAK TREE (T11) AND THIN BY 20% AND THIN TWO HORNBEAM TREES (T12 & T13) BY 20%
19 SCHOLARS MEWS, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7JQ
Received 26 Aug 2009
Decided - RefusedS6/2014/1353/FP
Erection of detached garage
The Lodge, 2 Northaw Place, Coopers Lane, Northaw, Potters Bar, EN6 4NQ
Received 16 Jun 2014
Decided - GrantedS6/2012/2492/FP
Alteration to rear roof from mansard style to gable end to include new chimney (in relation to planning application S6/2012/1142/FP)
9 Wilkins Green Lane, HATFIELD, AL10 9RT
Received 22 Nov 2012
Appeal Decided - Withdrawn6/2017/2521/LAWE
Certificate of lawfulness for use of part of dwelling as a beauty clinic
120 Handside Lane Welwyn Garden City AL8 6SZ
Received 30 Oct 2017
Decided - Granted6/2021/2581/HOUSE
Erection of single storey rear extension and rendering of rear elevation
5 Heronfield Little Heath Potters Bar EN6 1JA
Received 6 Sept 2021
Decided - Refused6/2016/0147/TPO
Removal of pine tree covered by TPO505 W1
Hatfield Lodge Newgate Street Hertford SG13 8NH
Received 28 Jan 2016

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