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

40,250Searchable applications

321Recorded as pending

86%Approval rate · 33,746 approved or refused records

4,812Refused applications

28,934 approved · 4,812 refused · 2,213 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 6 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2017/1883/COND
Submission of details pursuant to condition 3 (surface water drainage) on planning permission 6/2017/0708/FULL, dated 09/08/2017
11 Kerdistone Close Little Heath Potters Bar EN6 1LG
Received 23 Aug 2017
Decided - GrantedW6/2010/0105/EM
ERECTION OF SINGLE STOREY REAR EXTENSION
11 TEMPLEWOOD, WELWYN GARDEN CITY, HERTS, AL8 7HT
Received 18 Jan 2010
Decided - Granted6/2021/3329/EMT
1 x Hawthorn to fell to ground level 1 x Holly to fell to ground level
300 Knightsfield Welwyn Garden City AL8 7NQ
Received 24 Nov 2021
Decided6/2024/1111/TC
Removal of cotoneaster tree - already implicit permission given as this is in the way of consented extension
46 Blakemere Road Welwyn Garden City AL8 7PJ
Received 17 Jun 2024
Decided - GrantedN6/2014/2420/FP
Erection of single storey front extension incorporating the conversion of existing conservatory
39 Woodland Rise, Welwyn Garden City, AL8 7LJ
Received 3 Nov 2014
Decided - Granted6/2021/2694/HOUSE
Erection of a car port with garden store
10 London Road Welwyn AL6 9EL
Received 17 Sept 2021
Appeal Decided - DismissedN6/2005/1333/FP
ERECTION OF SINGLE STOREY FRONT & REAR EXTENSION AND FIRST FLOOR REAR EXTENSION
3 Youngs Rise Welwyn Garden City AL8 6RT
Received 21 Oct 2005
Decided - GrantedN6/2012/0394/CD
Proposed alterations to provide new entrance doors, new rooflights and 12 sunpipes
Welwyn Garden City Library Campus West The Campus Welwyn Garden City AL8 6AJ
Received 29 Feb 2012
Decided - GrantedC6/1988/0462/FP
Formation of new driveway
49 Brockswood Lane, Welwyn Garden City, AL8 7BU
Received 1 Jan 1988
Decided - Granted6/2017/1265/EM
Reduce Oak tree by upto 3 metres
36 Woodland Rise Welwyn Garden City AL8 7LF
Received 9 Jun 2017
Appealed6/2020/0472/EM
Alterations to fenestration's to facilitate garage conversion
84 Broomhills Welwyn Garden City AL7 1RD
Received 18 Feb 2020
Decided - GrantedN6/2004/0079/FP
ERECTION OF SINGLE STOREY REAR EXTENSION AND ALTERATIONS TO GARAGE
40 High Oaks Road Welwyn Garden City AL8 7BS
Received 20 Jan 2004
Decided - Granted6/2024/0117/FULL
Retention of two portakabin storage buildings
Eisai Manufacturing European Knowledge Centre Mosquito Way Hatfield AL10 9SN
Received 22 Jan 2024
Decided - Refused6/2022/2904/FULL
Erection of a single storey, part two storey rear extension with erection of a two storey side extension and subdivision of plot to facilitate the creation of 1 dwelling.
1 High Dells Hatfield AL10 9JD
Received 23 Dec 2022
Decided - GrantedW6/2013/2460/TE
Lift crown of Field Maple tree by approx 5 metres and remove overhanging branches plus fell 11 Comifer trees to ground level
50 Blakemere Road, WELWYN GARDEN CITY, AL8 7PJ
Received 7 Nov 2013
Appeal Decided - DismissedS6/2007/0600/FP
INSTALLATION OF 22.5 METRE HIGH LATTICE TOWER TO ACCOMMODATE THREE ANTENNAS; TWO No. CABINETS AND ANCILLARY DEVELOPMENT WITHIN A COMPOUND SURROUNDED BY A 1.8M HIGH CHAINLINK FENCE
LAND REAR OF, ASTWICK MANOR COTTAGES, JUNCTION OF COOPERS GREEN LANE/HATFIELD AVENUE, HATFIELD, HERTFORDSHIRE
Received 13 Apr 2007
Decided - Granted6/2021/3148/PN27
Prior approval for the construction of an additional storey to facilitate the enlargement of the dwelling house to a maximum of approximately 9 metres in height
53 The Ridgeway Cuffley Potters Bar EN6 4BD
Received 2 Nov 2021
Decided - Granted6/2016/0181/EM
Erection of single storey rear extension
2 Great Break, Welwyn Garden City, AL7 3EZ
Received 2 Feb 2016
Decided - GrantedS6/2014/0063/HH
Proposed erection of single storey rear extension with flat roof
160 Aldykes Hatfield AL10 8EE
Received 17 Jan 2014
Decided - GrantedN6/2013/0834/TC
Crown reduce false acacia tree by upto 30%
9 Moorside, WELWYN GARDEN CITY, AL7 4QH
Received 23 Apr 2013
Decided - GrantedN6/2004/0929/FP
ERECTION OF CONSERVATORY AT REAR.
5 Maran Avenue Welwyn AL6 9HS
Received 21 Jun 2004
Decided - GrantedW6/2013/2537/TE
Reduce crown of Ash tree by 30%, cut overhanging crown of Beech tree back by upto 3 metres, reduce crown of second Beech tree to below failure point and reduce lateral limbs by 2 metres plus fell one stem and reduce remaining stems of Two Beech trees by 30%
36 Elm Gardens, Welwyn Garden City, AL8 6RY
Received 20 Nov 2013
Decided6/2023/2310/TC
T1 x Oak reduce back to historic pruning points by 2.5m in height and width to maintain size and shape
60 Brockswood Lane Welwyn Garden City AL8 7BQ
Received 15 Nov 2023
Decided - Granted6/2020/1883/EMH
Erection of a part single, part double storey rear extension, single storey side extension, part garage conversion, front porch and insertion of one window to front elevation
11 The Quadrangle Welwyn Garden City AL8 6SG
Received 29 Jul 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