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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2026/1328/LAWP
Certificate of lawfulness for a proposed hip to gable loft conversion with rear facing dormer and single storey side extension, plus insertion of rooflight to front elevation
41 Great North Road Welwyn Garden City AL8 7TJ
Received 29 Jul 2026
Decided - Granted6/2015/2448/HOUSE
Erection of two storey, single storey rear extension and alterations
12 Rooks Hill, Welwyn Garden City, AL8 6ET
Received 9 Dec 2015
Decided - GrantedC6/1988/0228/FP
Two storey rear extension
50 Great North Road Welwyn Garden City AL8 7TJ
Received 1 Jan 1988
Decided6/2023/1404/TC
1 x Cherry to reduce all lateral growth back to fence line - the branches are to be reduced due to overhang
126 Handside Lane Welwyn Garden City AL8 6SZ
Received 5 Jul 2023
Decided - Granted6/2023/1559/COND
Submission of details pursuant to condition 2 (Landscaping Plan) on planning permission 6/2023/1064/VAR
2 Theobalds Road Cuffley Potters Bar EN6 4HQ
Received 27 Jul 2023
Decided - GrantedN6/2004/0969/FP
ERECTION OF REAR CONSERVATORY
111 Cole Green Lane Welwyn Garden City AL7 3JF
Received 25 Jun 2004
Decided - Granted6/2021/1897/EMH
Erection of a garden room/office
82 Woodhall Lane Welwyn Garden City AL7 3TF
Received 21 Jun 2021
Decided - Granted6/2019/2544/FULL
Retention of existing use of buildings (1a, 1b, 2b) for storage (use class B8)
Colesdale Farm Northaw Road West Northaw Potters Bar EN6 4QZ
Received 10 Oct 2019
Decided - Granted6/2019/1398/COND
Submission of details pursuant to condition 1 (Proposed Crown Roof) on planning permission 6/2019/0467/HOUSE
8 Great North Road Brookmans Park Hatfield AL9 6NF
Received 11 Jun 2019
Decided - GrantedS6/2014/0148/FP
Erection of two storey side extension
6 Shrublands, Brookmans Park, Hatfield, AL9 7AL
Received 23 Jan 2014
Decided - Granted6/2020/2826/EMT
Fell 1 x Conifer Tree
163 Howlands Welwyn Garden City AL7 4RL
Received 28 Oct 2020
Decided - Granted6/2015/1731/COND
Approval of details reserved by condition 5 (proposed access /on-site car & cycle parking / servicing / loading, unloading / turning areas) on planning permission N6/2015/0418/MA
Pacific House Unit K City Park Swiftfields Welwyn Garden City Hertfordshire AL7 1LY
Received 14 Aug 2015
Appeal Decided - DismissedN6/2007/1586/FP
ERECTION OF PART SINGLE STOREY AND PART TWO STOREY SIDE EXTENSION TO FORM NEW DWELLING.
65 BEEHIVE LANE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4BJ
Received 25 Oct 2007
Decided - Granted6/2018/1269/HOUSE
Erection of a single storey rear extension
60 The Commons Welwyn Garden City AL7 4RS
Received 14 May 2018
Decided - Granted6/2023/1332/EM
Replacement of front and side doors for improved security
99 The Vineyard Welwyn Garden City AL8 7PX
Received 27 Jun 2023
Decided - Granted6/2021/1694/HOUSE
Insertion of 1 x front facing window to existing ground floor to facilitate conversion of existing garage, insertion of bi-folding doors to existing rear elevation and extension of existing driveway to create 1 x additional parking space.
2 Elsons Mews Welwyn Garden City AL7 1FP
Received 27 May 2021
Decided - Granted6/2024/0070/TPO
T7 and T8 Oak 30% crown reduction to the previous points. (TPO 641)
4 Mardley Heights Welwyn AL6 0TX
Received 10 Jan 2024
Decided6/2022/0179/TC
T1 Sweet Gum - Fell and treat stump with eco plugs
24 Dellcott Close Welwyn Garden City AL8 7BD
Received 25 Jan 2022
Decided - GrantedN6/2013/1706/FP
Conversion of existing dwelling to form 2 semi-detached dwellings; Alterations to access and provision of parking spaces; and Conversion of Outbuilding to an Annex
2 Whitehill, Ayot St Peter, Welwyn, AL6 9AF
Received 5 Aug 2013
Decided - GrantedW6/2015/0930/EM
Formation of grasscrete driveway and installation of a new side access gates
15 Sherrardspark Road, Welwyn Garden City, AL8 7JW
Received 1 May 2015
Decided - GrantedN6/2008/1813/FP
ALTERATION OF DORMER WINDOWS, CHIMNEY STACK AND WALL FINISHES (AMENDMENTS TO N6/2007/1392/FP)
GAYTON, Ayot Little Green Lane, Welwyn, AL6 9BD
Received 29 Sept 2008
Decided - Granted6/2026/0148/HOUSE
Erection of a second storey extension to existing bungalow, alterations to the roof, front and rear dormers, two storey front extension, part two storey part single storey rear extensions, new basement level and alterations to fenestration and external materials
57 Moffats Lane Brookmans Park AL9 7RT
Received 28 Jan 2026
Decided - Granted6/2026/0377/EM
Removal of existing dead and dying hedge at front boundary and replacement of hedge
17 Roundwood Drive Welwyn Garden City AL8 7JZ
Received 2 Mar 2026
Decided - Granted6/2019/2379/COND
Submission of details pursuant to condition 1 (traffic noise), 2 (community amenity layout) and 3 (landscape buffer) on planning permission 6/2019/1471/FULL
Swan Lodge Bell Lane Brookmans Park Hatfield AL9 7AY
Received 26 Sept 2019

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