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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2019/2447/EM
Reduce 1 x Copper Beech tree by 3m height & 2m width
11 Digswell Park Road Welwyn Garden City AL8 7NW
Received 2 Oct 2019
Decided6/2021/3486/TC
Prune T1 Silver Birch located at the front of property: Lateral crown reduction by removing 2.5 metres growth pruning back to suitable growth points to leave a balanced crown and to reduce tip end weight, overhang over street lamp and road. Crown clean removing any damaged, diseased and deadwood.
31 Digswell Road Welwyn Garden City AL8 7PB
Received 14 Dec 2021
Decided - RefusedS6/2008/0427/FP
ERECTION OF NEW DWELLING FOLLOWING DEMOLITION OF EXISTING DWELLING
51 CALDER AVENUE, BROOKMANS PARK, HERTFORDSHIRE, AL9 7AH
Received 26 Feb 2008
Decided - GrantedN6/2013/1346/FP
Erection of single storey rear and side extension
8 Marsden Green, Welwyn Garden City, AL8 6YA
Received 25 Jun 2013
Decided - GrantedS6/2013/0583/FP
Retention of use of dwelling from small House in Multiple Occupancy to large House in Multiple Occupation for seven persons
1 Cunningham Avenue Hatfield AL10 9LP
Received 18 Mar 2013
Decided - GrantedW6/2013/1253/TE
Reduce Silver Birch tree by upto 30%
37 Blakemere Road, WELWYN GARDEN CITY, AL8 7PQ
Received 10 Jun 2013
Decided - WithdrawnW6/2004/1314/EM
INCREASE SIZE OF WINDOW IN SIDE ELEVATION
43 Elmwood, Welwyn Garden City, AL8 6LD
Received 27 Aug 2004
Decided - Granted6/2016/1896/COND
Approval of details reserved by condition 8 Part iii (Implementation of Approved Remediation Scheme) and Part iv (Reporting of unexpected Contamination) on planning permission S6/2013/0435/MA
University of Hertfordshire, College Lane, Hatfield, AL10 9AB
Received 13 Sept 2016
Decided - Refused6/2021/1295/HOUSE
Loft conversion to include rear dormer, erection of a single storey rear extension and glazed side shelter/walk-way area
27 Furzefield Road Welwyn Garden City AL7 3RL
Received 22 Apr 2021
Decided - RefusedN6/2006/0692/FP
ERECTION OF NEW FRONT PORCH; AND GALLERY TO BARN (REVISION TO PLANNING PERMISSION N6/2005/1149/FP GRANTED ON 09/11/2005)
124 Harmer Green Lane Digswell Welwyn AL6 0ET
Received 31 May 2006
Decided - GrantedN6/2004/0961/FP
DEMOLITION OF EXISTING HOUSE AND ERECTION OF FOUR DETACHED HOUSES.
20 Briary Wood Lane Welwyn AL6 0TF
Received 24 Jun 2004
Decided - Granted6/2021/1650/COND
Submission of details pursuant to condition number 19 (acoustic fencing), on planning permission 6/2019/1851/VAR
Unit 1 A1 Connect Industrial Estate (Formally- The Holdings), Cole Green Lane, Welwyn Garden City, AL7 4FW
Received 24 May 2021
Decided - Refused6/2017/2786/EM
Erection of single storey side and rear extension including alterations to openings
28 Brockswood Lane Welwyn Garden City AL8 7BG
Received 27 Nov 2017
Appeal Decided - DismissedS6/2008/0886/FP
ERECTION OF SINGLE STOREY SIDE EXTENSION, FIRST FLORR FRONT EXTENSION, NEW SIDE DORMERS, ROOF ALTERATIONS INCLUDING AN INCREASE IN EAVES HEIGHT, INCREASE IN RIDGE HEIGHT AND NEW DORMERS TO FRONT AND REAR
THE RIDGES, THE RIDGEWAY, CUFFLEY, POTTERS BAR, HERTFORDSHIRE, EN6 4BH
Received 3 Jun 2008
Decided - Granted6/2021/1088/LAWP
Certificate of lawfulness for a loft conversion and rear dormer extension to be within 50 cubic metres of the permitted development rights of a semi-detached property.
53 Huggins Lane Welham Green Hatfield AL9 7LJ
Received 1 Apr 2021
Decided - Granted6/2018/3018/PN8
Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3m in height, 2.4m to the eaves
62 School Lane Welwyn AL6 9PJ
Received 23 Nov 2018
Decided - RefusedS6/2013/1813/LUP
Certificate of lawfulness for the proposed erection of single storey rear extension
20 Selwyn Drive, Hatfield, AL10 9NJ
Received 21 Aug 2013
Decided - GrantedN6/2014/1102/AG
Prior approval for the erection of a storage building
Cromer Hyde Farm, Marford Road, Lemsford, Welwyn Garden City, AL8 7XD
Received 30 May 2014
Decided - Granted6/2026/0849/TC
T1: Cherry (Prunus sp.), dead. Fell and replant T2: Cherry (Prunus sp.), dead. Fell and replant 5 Day Notice
18 Stanborough Road Welwyn Garden City AL8 6XD
Received 13 May 2026
Decided - Granted6/2019/0183/LAWP
Certificate of lawfulness for single storey extension
Bury Lodge Digswell Lane Welwyn AL6 0SN
Received 28 Jan 2019
Decided - GrantedS6/2009/2511/DS
DISCHARGE OF CONDITIONS 3 a (DESKTOP STUDY), b (INVESTIGATION OF POTENTIALLY CONTAIMINATED SITES) & c (RISK ASSESSMENT) FROM PLANNING PERMSSION S6/2009/1740/MA
UNIVERSITY OF HERTFORDSHIRE, DEHAVILLAND CAMPUS, MOSQUITO WAY, HATFIELD, HERTFORDSHIRE
Received 27 Nov 2009
Decided - GrantedW6/2015/0004/TC
Reduce Leylandii hedge to 40ft and remove Leylandii tree
3 Junction Cottages Blakemere Road Welwyn Garden City AL8 7PH
Received 5 Jan 2015
Decided - Granted6/2023/1077/FULL
Erection of replacement outbuilding in the Green Belt (part retrospective)
Linden Lodge Bulls Lane Hatfield AL9 7BB
Received 22 May 2023
Decided - Withdrawn6/2022/0862/TPO
Reduce height of Holly and Elder tree by 20-30%. Removal of 4 overgrown conifers affecting building works to neighbours. Pruning of all trees and hedges on property in rear garden and front roadside, long overdue.
37 Mardley Avenue Welwyn AL6 0TU
Received 11 Apr 2022

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

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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.
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Published 16 Jul 2026Updated 13 Sept 2026
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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.
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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.
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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