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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2023/1379/HOUSE
Erection of two storey side extension following demolition of conservatory
75 Park Meadow Hatfield AL9 5HB
Received 3 Jul 2023
Decided - RefusedW6/2007/0326/EM
ERECTION OF A REAR CONSERVATORY (RETROSPECTIVE APPLICATION)
20 East Mead, Welwyn Garden City, AL7 4RR
Received 27 Feb 2007
Decided - Granted6/2026/0917/HOUSE
Erection of a single storey rear extension and covered veranda area and alteration to fenestration.
307 Knightsfield Welwyn Garden City AL8 7NJ
Received 22 May 2026
Decided - Granted6/2019/1033/EM
Fell 1 x Leyland Cypress tree
10 Blakemere Road Welwyn Garden City AL8 7PJ
Received 26 Apr 2019
Decided - Granted6/2025/0425/HOUSE
Demolition of existing store/garage and erection of a single storey side extension to create a replacement garage
81 Tolmers Road Cuffley Potters Bar EN6 4JJ
Received 7 Mar 2025
Decided - GrantedW6/2015/1013/TE
Crown reduce oak tree by 30%
10 Woodland Rise, Welwyn Garden City, AL8 7LF
Received 12 May 2015
Decided - GrantedW6/2015/0045/EM
Erection of a single storey rear extension and new brick parapet to existing garage
1 Valley Road, Welwyn Garden City, AL8 7DG
Received 12 Jan 2015
Decided - GrantedW6/2014/0174/TE
Crown reduce Beech tree by 30%
Land bordering 14 & 15 The Valley Green, Welwyn Garden City, AL8 7DQ
Received 17 Jan 2014
Decided - GrantedN6/2013/0694/FP
Erection of single storey rear extension, front porch and garage conversion into habitable accommodation (including replacement of garage door with window)
67 Gresley Close, Welwyn Garden City, AL8 7QA
Received 3 Apr 2013
Decided - GrantedN6/2004/1476/TP
WORK TO TWO HORNBEAM TREES COVERED BY TPO 99
3 Juniper Gardens Welwyn AL6 0XH
Received 5 Oct 2004
Decided - GrantedN6/2013/1308/FP
Erection of rear single storey outbuilding
10 Harwood Hill, Welwyn Garden City, AL8 7AP
Received 20 Jun 2013
Decided - GrantedN6/2009/1989/TE
REMOVE LOWER BRANCHES OF OAK TREE OVERHANGING GARDEN OF 56 WOODLAND RISE UPTO PREVIOUS HEIGHT OF PRUNING. REDUCE BACK TO PREVIOUS POINTS.
13 MANDEVILLE RISE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7JT
Received 22 Sept 2009
Decided - Granted6/2020/0710/EM
Reduce 1 x Apple tree by 30%
90 Handside Lane Welwyn Garden City AL8 6SN
Received 13 Mar 2020
Decided - Granted6/2016/0475/HOUSE
Conversion of garage into habitable room, including removal of the garage door and installation of brickwork and window
37 Chambers Grove, Welwyn Garden City, AL7 4FG
Received 22 Mar 2016
Decided - GrantedS6/2013/1190/LB
Internal alterations to re-configure the rear two bedrooms and bathroom into a master bedroom suite, enlarge the kitchen and relocate the door to the front bedroom
35 The Ryde, HATFIELD, AL9 5DQ
Received 6 Jun 2013
Decided6/2017/1497/TPO
Fell 1 x beech tree - Conservation Area
2 Hawthorns Welwyn Garden City AL8 7SE
Received 10 Jul 2017
Decided - Granted6/2020/3072/HOUSE
Erection of a first floor side and front extension, garage conversion into a habitable room with a window, proposed window openings, alteration to existing window openings and proposed landscaping works to front garden of dwellinghouse
4 Chedburgh Welwyn Garden City AL7 2PU
Received 19 Nov 2020
Decided - Granted6/2018/3143/FULL
Retention of change of use of the existing dwelling into a day nursery
14 Great North Road Welwyn AL6 0PL
Received 10 Dec 2018
Decided - GrantedW6/2014/1561/TE
Fell Ash tree set within hedge to be reduced by 3m plus fell Eucalyptus tree and clean crowns of Purple Crab, Box Elder and Plum tree
155 Parkway, Welwyn Garden City, AL8 6JA
Received 11 Jul 2014
Decided - WithdrawnN6/2004/0036/FP
ERECTION OF SINGLE STOREY REAR EXTENSION
74 The Vineyard Welwyn Garden City AL8 7PU
Received 13 Jan 2004
Decided - Granted6/2021/3243/HOUSE
Demolition of existing garage and erection of a single storey side extension and dormer
3 Fawn Court Hatfield AL9 5DJ
Received 12 Nov 2021
Decided - GrantedN6/2010/0015/FP
ERECTION OF FIRST FLOOR REAR EXTENSION
47 GRESLEY CLOSE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7QA
Received 6 Jan 2010
Appeal Decided - DismissedS6/2007/1503/FP
ERECTION OF A TWO STOREY SIDE EXTENSION INCLUDING DORMER WINDOWS FOLLOWING DEMOLITION OF EXISTING GARAGE
93 The Ridgeway, Cuffley, POTTERS BAR, Hertfordshire, EN6 4BG
Received 15 Oct 2007
Decided - GrantedN6/2009/2006/TE
REDUCE OVERALL SIZE OF CHEERY TREE BY 20% LOCATED IN REAR GARDEN
20 DANIELLS, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 1QX
Received 10 Sept 2009

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