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28,874 approved · 4,802 refused · 2,208 withdrawn.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: 2 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 Counts reflect the last collected status; some records may be out of date.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 - GrantedS6/2013/0498/MA
Proposed extension to existing car park 9 and erection of single decked car park to create an additional 80 spaces
University of Hertfordshire, College Lane, HATFIELD, AL10 9AB
Received 5 Mar 2013
Decided - GrantedW6/2010/1462/EM
Formation of vehicle hardstanding
10 Swanhill Welwyn Garden City AL7 1PB
Received 30 Jun 2010
Decided - Granted6/2020/1508/EMT
Group of Field Maples to reduce to around 7m height (previous pruning points)
9 Drycroft Welwyn Garden City AL7 4DH
Received 25 Jun 2020
Decided - SplitN6/2014/0708/DS
Discharge of condition 9 (Phasing of development), 17 (Drainage), 18 (Piled Foundations), 21 (Flood Risk Assessment) and 23 (Overland flow routes) of planning permission N6/2012/1778/OP
The Frythe, 5 Digswell Hill, Welwyn, AL6 9AR
Received 1 Apr 2014
Decided - Granted6/2017/2009/HOUSE
Installation of paving
34 Lords Wood Welwyn Garden City AL7 2HF
Received 5 Sept 2017
Decided - Granted6/2015/1690/FULL
Erection of single storey rear and side extension to existing kitchen and dining area and repositioning of existing bicycle stand
Green Lanes Primary School Green Lanes Hatfield AL10 9JY
Received 11 Aug 2015
Decided - GrantedW6/2014/1256/EM
Erection of part single, part two storey rear extensions, conversion of storage areas and erection of a garden shed
330 Knightsfield, Welwyn Garden City, AL8 7NQ
Received 4 Jun 2014
Decided - Granted6/2016/0502/PN8
Prior approval for the erection of a single storey rear extension, measuring 8m. in depth, 3m. in height and 3m. to the eaves
3 The Ridgeway, Cuffley, Potters Bar, EN6 4AY
Received 16 Mar 2016
Decided - GrantedS6/2009/0010/FP
ERECTION OF SINGLE STOREY SIDE AND REAR EXTENSION
11 Frowick Close, Hatfield, AL9 7LS
Received 9 Jan 2009
Decided6/2023/1942/TC
T1 Birch - Dead - Fell to ground level T2 Birch - In Decline - Fell to ground level
118 Parkway Welwyn Garden City AL8 6HN
Received 20 Sept 2023
Decided - Granted6/2017/1412/HOUSE
Erection of rear extension following demolition of existing conservatory and works to existing porch.
74 Carve Ley Welwyn Garden City AL7 3HH
Received 27 Jun 2017
Decided - Granted6/2018/0495/HOUSE
Erection of a timber shed following demolition of existing
16 Northaw Road West, Northaw, Potters Bar, EN6 4NR
Received 20 Feb 2018
Decided - GrantedW6/2015/0961/EM
Erection of new summerhouse
2 Ashley Close, Welwyn Garden City, AL8 7LH
Received 6 May 2015
Decided6/2025/1700/TC
Crown lift 2 x Lime by 2m (T2) Reduce 1 x Malus by 3m (T3)
40 Parkway Welwyn Garden City AL8 6HQ
Received 7 Aug 2025
Decided - GrantedN6/2007/1786/FP
ERECTION OF SINGLE STOREY SIDE EXTENSION
42 BLAKEMERE ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7PJ
Received 23 Nov 2007
Decided - Granted6/2025/1391/HOUSE
Insertion of part dormer window to the northern flank elevation of the existing dwelling
19 Elmwood Welwyn Garden City AL8 6LD
Received 2 Jul 2025
Decided - GrantedS6/2014/2513/FP
Erection of part two storey and part single storey side and rear extensions, erection of single storey front extension following demolition of existing garage and alterations to existing rear extension to part flat and pitched roof
9 Birch Drive Hatfield AL10 8NX
Received 17 Nov 2014
DecidedS6/2014/2569/DT
Prior approval for the installation of 12.5m dual stack Elara Column with 2 no. Equipment cabinets
Hatfield Business Park, Hatfield Avenue, Hatfield, AL10 9TP
Received 24 Nov 2014
Decided - Granted6/2020/0098/EM
Fell 1 x Cherry
53 Longcroft Lane Welwyn Garden City AL8 6EB
Received 15 Jan 2020
Decided - Granted6/2020/2273/VAR
Variation of condition 1 (materials) on planning permission 6/2019/0814/FULL
55 Bishops Rise Hatfield AL10 9BX
Received 7 Sept 2020
Decided - Granted6/2017/1866/FULL
Installation of window to front elevation of two houses to facilitate conversion of 2 garages to habitable space and changes to landscaping
11 Kerdistone Close Little Heath Potters Bar EN6 1LG
Received 22 Aug 2017
Decided - Granted6/2023/0405/COND
Submission of details pursuant to condition number 10 (substance containers), on planning appeal permission 6/2020/2248/OUTLINE
Roundhouse Farm Land off Bullens Green Lane Colney Heath
Received 21 Feb 2023
Decided - Granted6/2018/1792/HOUSE
Erection of a rear conservatory
34 Lords Wood Welwyn Garden City AL7 2HF
Received 6 Jul 2018
Decided - Granted6/2020/0272/COND
Submission of details pursuant to condition 2 (archaeological scheme) on planning permission 6/2019/1992/HOUSE
15 Glebe Road Welwyn AL6 9PB
Received 30 Jan 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