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

283Recorded 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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - GrantedW6/2008/0400/EM
ERECTION OF REAR CONSERVATORY
140 PARKWAY, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6HP
Received 6 Mar 2008
Decided - Refused6/2017/2495/HOUSE
Erection of a single storey side and rear, first floor side and two storey rear extensions. Installation of first floor side window and ground floor rear doors.
41 Valley Road Welwyn Garden City AL8 7DH
Received 30 Oct 2017
Decided - RefusedW6/2007/1733/EM
ERECTION OF TWO STOREY SIDE AND PART TWO STOREY PART SINGLE STOREY REAR EXTENSION WITH ROOFLIGHTS
118 Dawley Welwyn Garden City AL7 1DX
Received 16 Nov 2007
Decided - GrantedW6/2009/1738/EM
ERECTION OF REAR CONSERVATORY
10 LITTLE DELL, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7HZ
Received 10 Aug 2009
Decided6/2021/3264/TC
T1- Reduce a willow by 2-3m from branch tips
3 Parkfields Welwyn Garden City AL8 6EE
Received 16 Nov 2021
Decided - GrantedS6/2008/0940/FP
ERECTION OF SINGLE STOREY FRONT EXTENSION AND INSTALLATION OF TWO FRONT DORMERS TO ROOF
10 OLD FRENCH HORN LANE, HATFIELD, HERTFORDSHIRE, AL10 8AJ
Received 17 Jun 2008
Decided - RefusedS6/2006/0427/FP
ERECTION OF FIRST FLOOR SIDE EXTENSION OVER EXISTING GARAGE, NEW PORCH AND FRONT CANOPY, CONVERSION OF EXISTING GARAGE TO HABITABLE ACCOMODATION AND ERECTION OF NEW DETACHED GARAGE
3 Church Close Cuffley Potters Bar EN6 4LS
Received 3 Apr 2006
Decided - Withdrawn6/2018/0414/PN8
Prior approval for the erection of a single storey rear extension measuring 4.5m in depth, 3m in height and 3m to the eaves
10 Orchard Way Little Heath Potters Bar EN6 1NT
Received 8 Feb 2018
Decided - Granted6/2025/0625/LB
Replacement of existing chimney
Bedwell Lodge Cucumber Lane Essendon Hatfield AL9 6JB
Received 1 Apr 2025
Decided - Withdrawn6/2020/3137/LB
Erection of detached garden room to the rear garden of the property
6 Ayot Green Ayot St Peter Welwyn AL6 9AB
Received 24 Nov 2020
Decided - GrantedH/1993/5193/EM
Replacement of hedge with 3ft wall on front boundary
16 Birch Drive Hatfield AL10 8NX
Received 1 Jan 1993
Decided - Granted6/2021/3297/LB
Rebuilding of part of boundary wall
Ponsbourne St Marys C Of E Vc Primary School 55 Newgate Street Village Hertford SG13 8RA
Received 22 Nov 2021
Decided - Granted6/2016/1300/TPO
Reduce Cherry tree height by 3m and laterally by 2m plus lift to 4m from ground level and reduce Ash tree by 3m and 2m laterally - Conservation Area
40 Reddings, Welwyn Garden City, AL8 7LA
Received 14 Jun 2016
Decided - GrantedN6/2007/0187/FP
ERECTION OF TWO STOREY REAR EXTENSION AND FRONT PORCH
THE NEW HOUSE, BESSEMER ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7LU
Received 5 Feb 2007
Decided - Granted6/2018/0446/PN8
Prior approval for the erection of a single storey rear extension measuring 5.19m in depth, 3.0m to the eaves and 4.0m in height
7 Oaklands Avenue Brookmans Park Hatfield AL9 7UH
Received 12 Feb 2018
Decided - Withdrawn6/2022/1685/EM
Application for second dropped kerb
106 Birchwood Avenue Hatfield AL10 0PS
Received 18 Jul 2022
Decided - GrantedW6/2008/2390/EM
INSTALLATION OF TWO REAR ROOFLIGHTS, REMOVAL OF WINDOW ON REAR ELEVATION AND INSERTION OF WINDOW ON REAR ELEVATION
531 HOWLANDS, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4HT
Received 4 Dec 2008
Decided - Granted6/2016/2650/EM
Erection of single storey and part two storey rear extension and new windows to existing property
47 Uplands Welwyn Garden City AL8 7EN
Received 12 Dec 2016
Appeal Decided - Dismissed6/2015/1829/LB
Erection of a garden room following demolition of existing garden room and re-using materials from the existing building
Bailiffs Cottage, 21 Digswell Park Road, Welwyn Garden City, AL8 7NW
Received 27 Aug 2015
Decided - Granted6/2021/0539/EMT
Fell and remove stumps for 2x Spruce trees
24 Turmore Dale Welwyn Garden City AL8 6HS
Received 18 Feb 2021
Decided - Granted6/2018/1520/HOUSE
Erection of single storey rear extension
171 Parkway Welwyn Garden City AL8 6JA
Received 6 Jun 2018
Decided - Granted6/2019/2473/HOUSE
Erection of conservatory following demolition of existing conservatory
17 Cobmead Hatfield AL10 0JF
Received 4 Oct 2019
Decided - Granted6/2019/1807/LAWP
Certfificate of lawfulness for the stationing of mobile shepherds hut inside residential curtilage
The Mulberries Danesbury Park Road Welwyn AL6 9SE
Received 18 Jul 2019
Decided - Granted6/2020/1133/HOUSE
Erection of first floor side extension
12 Carleton Rise Welwyn AL6 9RA
Received 19 May 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