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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 9 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 Counts reflect the last collected status; some records may be out of date.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 - Withdrawn6/2016/2600/EM
Erection of front porch with alterations to fenestrations. Conversion of existing garage and erection of first floor side extension. Removal of 2 chimneys. Erection of cabin to the rear. Enlargement of existing hardstanding and associated landscaping to front.
14 Guessens Road Welwyn Garden City AL8 6QR
Received 24 Nov 2016
Decided - GrantedW6/2014/1825/EM
Replacement of rear window with french doors
2 Sheepcote, Welwyn Garden City, AL7 4QD
Received 14 Aug 2014
Decided - Granted6/2021/2683/TPO
Reduce 1 x Silver Birch by 1-3m
27 The Cloisters Welwyn Garden City AL8 6DU
Received 16 Sept 2021
Decided - GrantedN6/2014/0286/HH
Prior approval for the erection of single storey rear extension
13 Haynes Close, Welwyn Garden City, AL7 3EP
Received 12 Feb 2014
Decided - GrantedN6/2014/1122/FP
Erection of single storey rear and first floor side extensions
15 Monks Rise, Welwyn Garden City, AL8 7NF
Received 16 May 2014
Decided - Granted6/2026/0942/COND
Submission of details pursuant to condition number 1 (Construction Method Statement) & 2 (Archaeological Written Scheme of Investigation) on planning permission 6/2022/1957/FULL
The Coach and Horses 61 Newgate Street Village Hertford SG13 8RA
Received 29 May 2026
Appeal Decided - Dismissed6/2020/1709/FULL
Erection of 3 industrial units following demolition of existing outbuildings
25 Ayot Green Ayot St Peter Welwyn AL6 9BA
Received 14 Jul 2020
Decided - GrantedN6/2008/1400/AD
INSTALLATION OF TWO INTERNALLY ILLUMINATED FASCIA SIGNS AND VINYL SIGNAGE TO WINDOWS
42 CHURCH ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6PJ
Received 12 Aug 2008
Decided - GrantedW6/2014/0716/TE
Reduce Oak tree crown by 30%
Land at, 4 & 6 Mandeville Rise, Welwyn Garden City, AL8 7JU
Received 28 Mar 2014
Decided - Granted6/2026/0906/EM
Proposed single-storey rear and side extension, incorporating three new rooflights
102 Lemsford Lane Welwyn Garden City
Received 21 May 2026
Decided - Granted6/2015/1510/HOUSE
Single storey rear extension
8 Swanley Bar Lane Little Heath Potters Bar EN6 1NP
Received 20 Jul 2015
Decided - Granted6/2019/0072/HOUSE
Erection of a single storey side extension
24 High Oaks Road Welwyn Garden City AL8 7BH
Received 15 Jan 2019
Decided - Granted6/2024/1261/EM
Installation of new of new external wall insulation, new roof coverings and new windows, doors and ventilation works
4 Attimore Close Welwyn Garden City AL8 6LN
Received 4 Jul 2024
Decided6/2025/2359/TC
Prunus (approx 5m tall) : remove to ground level due to excessive lean towards neighbouring property and concern for walls and sheds. Willow: Reduce back to previous cut points, removing approx 5m or regrowth
The Hollie West End Lane Essendon Hatfield AL9 6AT
Received 10 Nov 2025
Decided - Granted6/2026/0266/TPO
TPO 652 T1 - crown reduce 1 x Oak tree by 2-3m Remove any major deadwood throughout crown
Chestnut Lodge Chestnut Walk Welwyn AL6 0SB
Received 16 Feb 2026
Decided - Granted6/2024/2155/COND
Submission of details pursuant to condition 10 (acoustic report) and 11 (noise survey) on planning permission 6/2020/2526/MAJ
University Of Hertfordshire College Lane Campus College Lane Hatfield AL10 9AB
Received 7 Nov 2024
Decided - Granted6/2021/3044/EMT
All three trees are purple leaf cherry trees Tree 1. Reduce crown by 25% cutting back to growth points. Thin centre of tree by 20% and also remove dead wood. Tree 2. This tree is badly diseased, so remove diseased branches and dead wood and reduce crown by 20% cutting back to growth points Tree 3. Reduce crown by 20% cutting back to growth points
109 Woodhall Lane, Welwyn Garden City, AL7 3TP
Received 22 Oct 2021
Decided - Granted6/2020/2566/EMT
Crown reduce ash by 30%
125 Sweet Briar Welwyn Garden City AL7 3EB
Received 2 Oct 2020
Decided - Granted6/2023/0724/HOUSE
Erection of a part two, part single storey side and rear extension, conversion of loft into habitable accommodation with construction of side dormer window, insertion of roof lights, and alterations to openings
23 Mardley Wood Welwyn AL6 0UY
Received 31 Mar 2023
Decided - Granted6/2015/2194/EM
Replacement of path in front garden
13 Handside Close, Welwyn Garden City, AL8 6SR
Received 22 Oct 2015
Decided6/2020/2594/TC
Reduce 1 x Ash tree by 4m height and 3m width covered by conservation area
5 The Old Drive Welwyn Garden City AL8 6TB
Received 7 Oct 2020
Decided - Granted6/2018/0165/HOUSE
Erection of a single storey rear extension
8 Vine Close Welwyn Garden City AL8 7PS
Received 17 Jan 2018
Decided - Granted6/2018/0436/EM
Erection of a wooden shed in rear garden.
26 Reddings Welwyn Garden City AL8 7LA
Received 12 Feb 2018
Decided6/2020/1616/COND
Submission of details pursuant to condition 2 (vehicular access) 3 (triangular vision splays) 4 (offsite highway improvement works) and 5 (access and area for car turning and parking) on planning permission 6/2020/0656/FULL
Unit 3 Swallow End Welwyn Garden City AL7 1JA
Received 6 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