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

35,715Searchable applications

331Recorded as pending

86%Approval rate · 29,756 approved or refused records

4,033Refused applications

25,723 approved · 4,033 refused · 1,870 withdrawn. Received dates in our records: 29 Apr 1948 to 16 Oct 2026. Most recent record check: 23 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 Counts reflect the last collected status; some records may be out of date.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

Appeal Decided - Allowed6/2016/1466/LAWP
Certificate of lawful use or development in respect of the proposed use of land within the existing caravan site boundaries for the siting of static caravans without restriction on the layout of the land or the number of caravans up to a maximum of 8 caravan units on the site at any one time
The Firs Park, Woodside Lane, Hatfield, AL9 6DG
Received 20 Jul 2016
Decided - GrantedN6/2013/0868/FP
Formation of additional hardstanding
3 Stapleford Welwyn Garden City AL7 2PD
Received 29 Apr 2013
Decided - GrantedS6/2013/1210/FP
Erection of two storey extension, works include demolition to existing field office
ROYAL VETERINARY COLLEGE, Hawkshead Lane, North Mymms, Hatfield, AL9 7TA
Received 11 Jun 2013
Decided - GrantedN6/2014/0195/FP
Erection of single storey rear extension with one roof light and garage conversion into habitable accommodation to include 3 rooflights and replacement of garage door with window
332 Knightsfield, Welwyn Garden City, AL8 7NQ
Received 20 Jan 2014
Decided - GrantedN6/2008/1598/LB
ERECTION OF REAR CONSERVATORY
10 Mill Lane Welwyn AL6 9ET
Received 23 Aug 2008
Decided - Granted6/2021/2593/EMH
Erection of a single storey rear extension
84 Pentley Park Welwyn Garden City AL8 7SG
Received 6 Sept 2021
Decided - GrantedS6/2009/1680/FP
ERECTION OF SINGLE STOREY FRONT, SIDE AND REAR EXTENSIONS AND INSERTION OF REAR DORMER, FOLLOWING DEMOLITION OF EXISTING CONSERVATORY AND SIDE EXTENSION
44 HIGH ROAD, ESSENDON, HATFIELD, HERTFORDSHIRE, AL9 6HW
Received 5 Aug 2009
Decided - Refused6/2018/3005/HOUSE
Erection of an oak framed open sided carport replacing existing structure
East Lodge Judges Hill Northaw Potters Bar EN6 4NL
Received 23 Nov 2018
Decided - Granted6/2018/0028/EM
Pollard three hornbeams Oak Tree 1. Remove dead wood and reduce one branch Oak Tree 2. Reduce crown Oak tree 3. Reduce crown
1 The Glade Welwyn Garden City AL8 7LG
Received 4 Jan 2018
Decided - Granted6/2016/0540/DC3
Installation of replacement shop fronts
1-5 The Arcade Hatfield AL10 0JY
Received 31 Mar 2016
Decided - GrantedN6/2008/0641/FP
ERECTION OF REAR CONSERVATORY
13 CYPRESS AVENUE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 1HN
Received 28 Mar 2008
Decided6/2023/0537/TC
Reduce 1 x Silver Birch by 4m
4 Fearnley Road Welwyn Garden City AL8 6HW
Received 8 Mar 2023
Decided - GrantedN6/2014/0736/LUP
Certificate of lawfulness for erection of single storey rear extension
6 The Drive Welwyn AL6 0TR
Received 9 Apr 2014
Decided - Granted6/2023/2348/TPO
T1 and T2 - 2 x Hornbeams to fell to ground level as leaning over the footpath and Digswell road (TPO 724 W1)
Perrywood Walden Road Welwyn Garden City AL8 7PZ
Received 21 Nov 2023
Decided - Granted6/2023/0282/EM
Installation of external air conditioning units to the North and South side of the detached property
8 Longcroft Lane Welwyn Garden City AL8 6EA
Received 6 Feb 2023
Decided - Granted6/2025/0931/EM
Installation of a battery unit and EV charging point
12 Cole Green Lane Welwyn Garden City AL7 3PW
Received 20 May 2025
Decided - Refused6/2022/2436/HOUSE
Erection of a single storey rear and side extension with replacement hedge
28 The Swallows Welwyn Garden City AL7 1BY
Received 20 Oct 2022
Decided - Granted6/2024/2204/EM
Erection of a two storey rear extension and single storey side extension with installation of 3x rooflights and partial conversion of existing garage to form utility room following the demolition of existing conservatory
145 Boundary Lane Welwyn Garden City AL7 4EQ
Received 14 Nov 2024
Decided - Granted6/2022/0542/EM
Installation of two roof lights and insulation
36 Parkway Welwyn Garden City AL8 6HQ
Received 8 Mar 2022
Decided - GrantedS6/2008/0219/FP
ERECTION OF SINGLE STOREY FRONT EXTENSION
5 BELL LANE, BROOKMANS PARK, HATFIELD, HERTS, AL9 7AY
Received 5 Feb 2008
Decided - WithdrawnS6/2008/1365/CA
ERECTION OF SINGLE STOREY REAR EXTENSION AND INFILL OF COURTYARD TO CREATE ATRIUM
North Lodge, High Road, Hatfield, AL9 6HU
Received 8 Aug 2008
Decided - GrantedN6/2013/0575/FP
Erection of rear conservatory
3 Hammond Close Welwyn AL6 9FH
Received 18 Mar 2013
Decided - Granted6/2026/0943/HOUSE
Raising the existing roof line incorporating new rooflights, new dormer, external alterations to existing windows and doors and the creation of a new parking space, erection of canopy following demolition of existing porch
69 Robbery Bottom Lane Welwyn AL6 0UL
Received 29 May 2026
Decided - Granted6/2020/2858/FULL
Formation of replacement front drive to permeable hardstanding with new planting and paved pedestrian path including the change of use of grass verge (sui-generis) to form part of the adjoined dwellinghouse land (C3)
74 Rosedale Welwyn Garden City AL7 1DR
Received 2 Nov 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