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

40,118Searchable applications

300Recorded as pending

86%Approval rate · 33,650 approved or refused records

4,801Refused applications

28,849 approved · 4,801 refused · 2,206 withdrawn. Received dates in our records: 29 Apr 1948 to 26 Oct 2026. Most recent record check: 30 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2026/0120/FULL
Proposed replacement plant equipment at roof level and the installation of external terrace seating
The Howard Centre 32 Howardsgate Welwyn Garden City AL8 6HA
Received 26 Jan 2026
Decided6/2025/2595/TC
1 x Eucalyptus to reduce over long branches (over the garden of No. 9 only) throughout canopy by around 3 metres in order to create a more compact canopy shape. To reduce over extended branches over garden of no.9 by 3m to create a more compact shape and reduce risk of branch failure. Reduce branches over garden and property by 3m of No8 as they are now close to property , also heavily extended over smaller shrubs and plants, suppressing growth and limiting light.
9 High Grove Welwyn Garden City AL8 7DW
Received 18 Dec 2025
Decided - Granted6/2019/2201/HOUSE
Erection of single storey side and rear, two storey side extensions and alterations to openings.
604 Howlands Welwyn Garden City AL7 4ET
Received 4 Sept 2019
Decided - Granted6/2015/1638/EM
Removal of Mayflower Hawthorn Tree
10 Barleycroft Green, Welwyn Garden City, AL8 6JY
Received 3 Aug 2015
Decided - GrantedN6/2008/0939/FP
ERECTION OF REAR CONSERVATORY, FOLLOWING DEMOLITION OF EXISTING CONSERVATORY
380 KNIGHTSFIELD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7LZ
Received 17 Jun 2008
Decided - Granted6/2017/0301/HOUSE
Replacement roof to existing garage, including roof lights and alterations to openings
St Michaels Woodside Wildhill Road Brookmans Park Hatfield AL9 6DL
Received 16 Feb 2017
Decided - GrantedW6/2015/1356/TE
Reduce Prunus, Hawthorn, Escalonia and 4 Conifer trees by 10% remove crown from Chestnut tree and reduce trunk to 4m plus removal of Oak and Silver Birch tree
34 Fordwich Road Welwyn Garden City AL8 6EY
Received 24 Jun 2015
Decided - Granted6/2026/0824/EMT
Yew tree (T4) rear garden; south boundary; rooted in neighbour's property (no 37) overhanging boundary. Reduce north side (overhanging garden) to reduce lateral spread by approx 1.5m
35 Elmwood Welwyn Garden City AL8 6LD
Received 11 May 2026
Decided - Granted6/2026/1472/HOUSE
Erection of part single, part two storey rear extension, new windows and doors to existing side and rear elevations and installation of rooflight within the rear roofslope
16 Oak Road Woolmer Green SG3 6LS
Received 20 Aug 2026
Decided - RefusedS6/2013/2004/FP
Erection of first floor side extension
Laurel Cottage, Carbone Hill, Northaw, Hertford, SG13 8RG
Received 19 Sept 2013
Decided - Granted6/2023/2245/TPO
T23 Oak, T25 Oak and T28 Oak - crown reduction by 2 metres due to blocking sunlight for the garden
8 Mardley Hill Welwyn AL6 0TN
Received 6 Nov 2023
Decided - Granted6/2023/0992/HOUSE
Erection of part first floor side extension, installation of rear dormer, four rooflights and alterations to fenestration
38 Bell Lane Brookmans Park AL9 7AY
Received 10 May 2023
Decided - Granted6/2021/1035/HOUSE
Conversion of garage to habitable room and replacement of garage door with window and brickwork
77 Tiger Moth Way Hatfield AL10 9LT
Received 29 Mar 2021
Decided6/2024/1964/TC
T1 Ash - Remove T6 Ash - Remove T8 Ash - Remove T13 Ash - Remove T17 Italian Alder - Reduce overall height to the previous pruning points ( circa 7 m). G18 Two Ash trees adjacent to Lemsford Village road- Remove dead wood. T21 Copper Beech - Remove dead wood . Crown lift to 3m over Lemsford Village Road. T2 Ash - Remove T3 Ash - Remove T4 Ash - Remove G7 Ash - Remove G9 Ash - Remove T12 Dead tree unidentified - Remove
Lemsford Mill Lemsford Village Welwyn Garden City AL8 7TR
Received 14 Oct 2024
Decided - GrantedN6/2014/1411/DS
Approval of details reserved by condition 3 (materials) & 4 (rooflights) of planning permission N6/2013/2582/FP
34 Lodgefield, Welwyn Garden City, AL7 1SD
Received 23 Jun 2014
Decided - Granted6/2020/3305/HOUSE
Erection of a part single storey, part two storey side and rear extension, front porch and rear balcony
6 Lark Rise Hatfield AL10 8RA
Received 9 Dec 2020
Decided - Refused6/2018/3297/VAR
Variation of condition 2 (Boundary Treatments)on planning permission 6/2018/2452/HOUSE
11 Cherry Croft Welwyn Garden City AL8 7QU
Received 31 Dec 2018
Decided - GrantedN6/2014/2019/FP
Erection of single storey and two storey rear extension
68 Brockswood Lane, Welwyn Garden City, AL8 7BQ
Received 10 Sept 2014
Decided - GrantedN6/2015/0152/FP
Erection of a single storey rear extension and associated internal alterations
7 Chelveston, Welwyn Garden City, AL7 2PW
Received 27 Jan 2015
Decided - Granted6/2023/2551/FULL
Change of use from amenity land to residential driveway (retrospective)
12 Golden Dell Welwyn Garden City AL7 4EB
Received 21 Dec 2023
Decided - Granted6/2024/1734/HOUSE
Erection of part single and part two-storey rear extension, replacement windows, rebuilt front porch and amendments to driveway and associated works
30 Barleycroft Road Welwyn Garden City AL8 6JU
Received 10 Sept 2024
Decided - Withdrawn6/2015/2118/FULL
Formation of replacement shop front, refurbishment of existing shop front and decoration.
88 Town Centre Hatfield AL10 0JW
Received 12 Oct 2015
Decided - GrantedS6/2004/1345/FP
INSTALLATION OF RETROFIT COMFORT COOLING SYSTEM
ASDA STORES LTD, 98 TOWN CENTRE, HATFIELD, HERTFORDSHIRE, AL100JP
Received 7 Sept 2004
Decided - GrantedN6/2015/0690/TP
Reduce oak to previous cuts by 30%, removal of deadwood and thin. Reduce beech by 10% remove two lowest limbs and remove deadwood covered by TPO 24 A3
8 Mardley Heights Welwyn AL6 0TX
Received 27 Mar 2015

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

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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