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

40,295Searchable applications

322Recorded as pending

86%Approval rate · 33,786 approved or refused records

4,816Refused applications

28,970 approved · 4,816 refused · 2,217 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 7 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2026/1559/LAWP
Certificate of lawfulness for construction of a new detached, single-storey garden room/summerhouse within an existing rear garden
28 Pleasant Rise Hatfield AL9 5DU
Received 8 Sept 2026
Decided - Refused6/2016/2177/HOUSE
Erection of a single storey side/rear extension
10 Homestead Lane Welwyn Garden City AL7 4LU
Received 17 Oct 2016
Decided - Granted6/2022/2589/EM
Fell 1 x lime tree Fell 5 x Leyland cypress
5 The Old Drive Welwyn Garden City AL8 6TB
Received 14 Nov 2022
Decided - RefusedW6/2007/0456/EM
ERECTION OF WHITE PVC-U CONSERVATORY
17 Parkfields, Welwyn Garden City, AL8 6EE
Received 19 Mar 2007
Decided - WithdrawnN6/2006/0546/FP
ERECTION OF TWO STOREY REAR AND SINGLE STOREY SIDE EXTENSION
22 Blakemere Road Welwyn Garden City AL8 7PJ
Received 26 Apr 2006
Decided - Granted6/2015/2387/LB
Construction of a new underground swimming pool
Great Nast Hyde House, Wilkins Green Lane, Hatfield, AL10 9RB
Received 26 Nov 2015
Decided - GrantedW6/2008/2214/EM
ERECTION OF SINGLE STOREY SIDE EXTENSION, ERECTION OF DETACHED GARAGE, REMOVAL OF HEDGE AND FORMATION OF HARDSTANDING TO CREATE A DRIVE
34 LONGCROFT LANE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6EA
Received 18 Nov 2008
Decided - Granted6/2018/0556/EM
Removal of a concrete wall at the front of the property.
48 Valley Road Welwyn Garden City AL8 7DN
Received 26 Feb 2018
Decided - GrantedW6/2007/0226/EM
ERECTION OF A TWO STOREY REAR EXTENSION AND SINGLE STOREY SIDE AND REAR EXTENSION
26 Sheepcote, Welwyn Garden City, AL7 4QD
Received 12 Feb 2007
Decided - Granted6/2020/3424/HOUSE
Erection of front porch
37 Hawkshead Road Little Heath Potters Bar EN6 1NE
Received 22 Dec 2020
Decided - GrantedN6/2008/1262/TP
30% REDUCTION TO CEDAR TREE IN FRONT GARDEN
10 The Chase Welwyn AL6 0QT
Received 23 Jul 2008
Decided - Granted6/2021/2738/LAWP
Certificate of lawfulness for a loft conversion with hip to gable and rear dormer and front roof lights. Alteration to side ground floor window.
4 Oaklands Avenue Brookmans Park AL9 7UJ
Received 22 Sept 2021
Decided - Granted6/2017/2634/EM
Erection of proposed two storey rear extension and single storey side extension, with matching fenestration and bi-folding doors at ground floor.
7 Little Youngs Welwyn Garden City AL8 6SL
Received 10 Nov 2017
Decided6/2019/3155/TC
Various works to 55 trees and 4 groups of trees
Templewood Primary School Pentley Park Welwyn Garden City AL8 7SD
Received 16 Dec 2019
DecidedN6/2009/1458/TE
FELL AND STUMP REMOVAL OF EUCALYPTUS TREE
16 BARLEYCROFT GREEN, WELWYN GARDEN CITY, HERTS, AL8 6JY
Received 22 Jun 2009
Decided - Granted6/2020/3039/EMT
Fell 1 x Ivy Clad Hornbeam tree
16 Scholars Mews Welwyn Garden City AL8 7JQ
Received 17 Nov 2020
Decided - Granted6/2023/2272/FULL
Conversion and reconfiguration of the existing Lodge Farm main house into 4 x two storey dwellings including first floor extension.
124 Harmer Green Lane Digswell Welwyn AL6 0ET
Received 9 Nov 2023
Decided - Granted6/2015/2075/TPO
Removal of two Conifer trees - Conservation Area.
27 Russellcroft Road, Welwyn Garden City, AL8 6QX
Received 5 Oct 2015
Decided - Granted6/2018/1866/FULL
Erection of three-bedroom dwelling, conversion of existing dwelling to 2 x 3-bedroom dwellings including single storey front extension installation of 6x dormers and 5x roof lights following demolition of existing commercial building residential garages and canopy
13 New Road Welwyn Garden City AL8 7TX
Received 17 Jul 2018
Decided - GrantedN6/2013/2338/DS
Discharge of conditions 3 (materials), 4 (Tree Protection Plan), 5 (hard and soft landscaping) and 6 (construction method) of planning permission N6/2013/1273/FP
13 The Drive Welwyn AL6 0TW
Received 1 Nov 2013
Decided - Granted6/2016/2245/TPO
To top by 6m 2 x Lombardy poplar and 1 x conifer standing in TPO 561 (2016) (G1).
Reservoir adj to 51 Haseldine Meadows Hatfield AL10 8HA
Received 25 Oct 2016
Decided - Granted6/2016/1805/TPO
Reduce 4 Oak trees T23, T24, T25 and T28 by 33% and remove lower branches covered by TPO 19 (1975)
8 Mardley Hill Welwyn AL6 0TN
Received 5 Sept 2016
Decided - GrantedN6/2014/0911/LUP
Certificate of lawfulness for proposed front porch
7 New Road Welwyn Garden City AL8 7TX
Received 30 Apr 2014
Decided6/2021/3040/TC
Oak tree crown reduction and crown thinning by 30%
29 Reddings Welwyn Garden City AL8 7LA
Received 22 Oct 2021

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