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

40,146Searchable applications

300Recorded as pending

86%Approval rate · 33,676 approved or refused records

4,802Refused applications

28,874 approved · 4,802 refused · 2,208 withdrawn. Received dates in our records: 29 Apr 1948 to 26 Oct 2026. Most recent record check: 1 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/0125/EM
Retention of front parapet wall
7 Densley Close Welwyn Garden City AL8 7JX
Received 23 Jan 2017
Decided - Granted6/2024/1062/HOUSE
Erection of single storey rear extension and front porch
39 The Grove Brookmans Park AL9 7RL
Received 7 Jun 2024
Decided - GrantedS6/2004/1655/FP
ERECTION OF TEMPORARY BUILDING
UNIVERSITY OF HERTFORDSHIRE, JOHN LILL MUSIC CENTRE, COLLEGE LANE, HATFIELD, HERTFORDSHIRE, AL109PN
Received 9 Nov 2004
Decided - GrantedN6/2004/0841/FP
SINGLE STOREY SIDE AND REAR EXTENSIONS
3 The Paddocks Welwyn Garden City AL7 2BW
Received 8 Jun 2004
Decided - WithdrawnS6/2005/0117/FP
INSTALLATION OF NEW HOLDING TANK
SUB-STATION, CHANTRY LANE, HATFIELD, HERTFORDSHIRE, AL109HW
Received 31 Jan 2005
Appeal Decided - Allowed6/2016/1980/FULL
Erection of new detached dwelling
26 Great North Road Welwyn AL6 0PS
Received 26 Sept 2016
Decided - Granted6/2024/0971/EM
Conversion of a curtilage listed Grade II outbuilding into habitable space with demolition of timber shed
1 Digswell Park Cottages Digswell Park Road Welwyn Garden City AL8 7NN
Received 23 May 2024
Decided - Refused6/2025/1776/PN19
Prior approval for the erection of a general purpose agricultural building/access/access track
Land off Bulls Lane Hatfield AL9 7BB
Received 21 Aug 2025
Decided - GrantedS6/2004/1519/FP
ERECTION OF A REAR CONSERVATORY (AMENDMENT TO PLANNING PERMISSION S6/2004/700/FP)
5 Rectory Gardens Hatfield AL10 8BG
Received 11 Oct 2004
Decided - RefusedW6/2009/0226/EM
ERECTION OF DETACHED DWELLING
217 HANDSIDE LANE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6TF
Received 2 Feb 2009
Decided - GrantedS6/2008/0789/FP
INSTALLATION OF REAR DORMER WINDOW AND ROOFLIGHT TO SIDE ELEVATION
26 MYMMS DRIVE, BROOKMANS PARK, HATFIELD, HERTFORDSHIRE, AL9 7AF
Received 9 May 2008
Decided - Refused6/2018/0642/VAR
Variation of condition 16 (approved plans) on planning permission 6/2016/2497/MAJ
37 Broadwater Road Welwyn Garden City AL7 3AX
Received 7 Mar 2018
Decided6/2018/2958/TPO
Reduce by 30% 1x Apple tree -Conservation area
8 Meadow Green Welwyn Garden City AL8 6SS
Received 16 Nov 2018
Decided - Granted6/2021/2242/HOUSE
Replacement of existing bow window with bay window
43 Maryland Hatfield AL10 8DS
Received 27 Jul 2021
Decided - Granted6/2024/2152/EMT
Reduce 1 x Ash by 30% to suitable growth points. Reduce 1 x Hornbeam by 30% to suitable growth points.
28 Guessens Road Welwyn Garden City AL8 6RA
Received 7 Nov 2024
Decided - Granted6/2022/0161/TPO
T305 Fell leaning Scots pine - TPO 382 G1
37 The Ridgeway Cuffley Potters Bar EN6 4BB
Received 21 Jan 2022
Decided - Granted6/2025/1527/HOUSE
Erection of a single storey rear extension, installation of rear dormer to facilitate the conversion of loft to habitable space, alterations to the existing garage, new roof extending over a covered BBQ area and alterations to fenestration
32 Huggins Lane Welham Green Hatfield AL9 7LE
Received 16 Jul 2025
Decided - Granted6/2020/1252/HOUSE
Erection of swimming pool with decking
120 Moffats Lane, Hatfield, AL9 7RW
Received 4 Jun 2020
Decided - GrantedW6/2015/1353/EM
Erection of first floor rear extension
1 Bushey Green Welwyn Garden City AL7 3HA
Received 24 Jun 2015
Decided - Granted6/2017/1572/LB
Internal alterations to include the creation of an opening in bedroom 2 (first floor) and re-location of openings in bedroom 4 (first floor) to the en-suite.
Stocking Lane Cottage Hill Farm Lane Welwyn AL6 9BW
Received 19 Jul 2017
Decided - Granted6/2024/2166/LAWP
Certificate of lawfulness for installation of rear rooflights to facilitate loft conversion
46 Holwell Road Welwyn Garden City AL7 3RQ
Received 11 Nov 2024
Decided - Granted6/2022/2431/HOUSE
Erection of single storey rear and side extension
128 Mount Way Welwyn Garden City AL7 4JX
Received 20 Oct 2022
Decided - Refused6/2019/2477/EM
Replacement of front door
145 Parkway Welwyn Garden City AL8 6JB
Received 2 Sept 2019
Decided - Granted6/2016/0824/LAWP
Certificate of lawfulness for the proposed erection of detached outbuilding
48 Tolmers Road, Cuffley, Potters Bar, EN6 4JF
Received 29 Apr 2016

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