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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - GrantedW6/2013/2584/EM
Erection of first floor extension
34 Lodgefield, Welwyn Garden City, AL7 1SD
Received 10 Dec 2013
Decided - Granted6/2018/0885/EM
Installation of 8 black CCTV cameras
1 Coneydale Welwyn Garden City AL8 7RX
Received 3 Apr 2018
Decided - GrantedS6/2006/0218/FP
ERECTION OF SINGLE STOREY SIDE EXTENSION
59 Briars Lane Hatfield AL10 8EX
Received 20 Feb 2006
Decided - Granted6/2019/1548/EM
Fell x1 Cherry tree Fell x1 Mountain Ash tree
8 Scotts View Welwyn Garden City AL8 6HF
Received 25 Jun 2019
Decided6/2023/0515/TC
Reduce 1 x Oak by 1 meter due to overhanging
55 Parkway Welwyn Garden City AL8 6JF
Received 7 Mar 2023
Decided - Granted6/2017/2499/HOUSE
Erection of two storey rear and single storey side extensions (Resubmission of planning permission reference S6/2014/2609/FP, dated 05/02/2015)
34 Tolmers Avenue Cuffley Potters Bar EN6 4QA
Received 30 Oct 2017
Decided - GrantedS6/2008/1750/TP
CROWN REDUCTION BY TWO METRES TO ASH TREE (T1) COVERED BY TPO 240
4 LEA GREEN, MILL GREEN LANE, HATFIELD, HERTFORDSHIRE, AL9 5NX
Received 30 Aug 2008
Decided - Granted6/2026/1030/FULL
Proposed new manège with associated lighting, fencing, landscaping, and associated works
Royal Veterinary College Hawkshead Lane North Mymms AL9 7TA
Received 11 Jun 2026
Decided - Refused6/2019/0880/HOUSE
Erection of side extension to incorporate a hip to gable loft conversion with a rear dormer and single storey rear extension.
33 Dixons Hill Close Welham Green Hatfield AL9 7EF
Received 11 Apr 2019
Decided - Granted6/2019/2276/HOUSE
Erection of two storey side extension and installation of 2 x rear dormers, insertion of new stair to access the garden from patio area.
The Spinney 57A Great North Road Brookmans Park Hatfield AL9 6LA
Received 13 Sept 2019
Decided - Granted6/2024/0936/HOUSE
Erection of a single storey rear extension following the demolition of existing store/outbuilding
4 Warren Close Hatfield AL10 0AL
Received 20 May 2024
Decided - Granted6/2023/1604/EM
Proposed garage conversion to habitable use. Including replacing garage door to window & brickwork below
35 Marsden Green, Welwyn Garden City, AL8 6YD
Received 2 Aug 2023
Decided - GrantedS6/2015/0933/FP
Erection of two storey side and front extensions and installation of one dormer window to front roof slope
140 Tolmers Road, Cuffley, Potters Bar, EN6 4JR
Received 1 May 2015
Decided - Granted6/2025/0302/EM
Erection of a single storey side and rear extension, following demolition of conservatory
24 Springfields Welwyn Garden City AL8 6XP
Received 18 Feb 2025
Decided - Granted6/2020/3088/HOUSE
Erection of a first floor side extension, part single storey side and rear extension with rooflights, alterations to existing window openings and proposed window openings following demolition of existing conservatory
29 Bulls Lane Welham Green Hatfield AL9 7NY
Received 20 Nov 2020
Appeal Decided - DismissedN6/2014/1775/FP
Erection of two 4 bedroom dwellings following demolition of existing dwelling
15 Wendover Drive Welwyn AL6 9LT
Received 7 Aug 2014
Decided - WithdrawnS6/2008/1739/FP
ERECTION OF TWO STOREY SIDE EXTENSION
1 THE FIRS, WOODSIDE LANE, BELL BAR, HATFIELD, HERTFORDSHIRE, AL9 6DF
Received 6 Sept 2008
Decided - Granted6/2018/2250/HOUSE
Erection of outbuilding for ancillary use (retrospective)
144B Dixons Hill Road, Welham Green, Hatfield, AL9 7DN
Received 31 Aug 2018
Decided - Granted6/2025/0338/LAWP
Certificate of lawfulness for a proposed single storey side extension
19 The Gardens Brookmans Park AL9 7UL
Received 24 Feb 2025
Decided - GrantedN6/2014/1261/FP
Erection of garage extension following change of use of amenity land to C3 (dwellinghouse)
2 Sheepcote, Welwyn Garden City, AL7 4QD
Received 4 Jun 2014
Decided - Granted6/2024/0855/HOUSE
Conversion of existing garage to habitable accommodation and extend to link to the main dwelling, including alterations to the fenestration
2 Moffats Lane Brookmans Park AL9 7RU
Received 7 May 2024
Decided - Granted6/2019/2792/PN8
Prior approval for the erection of a single storey rear extension measuring 4.6m in depth, 3m in heights and 3m to the eaves
9 Stoneycroft Welwyn Garden City AL7 1QU
Received 1 Nov 2019
Decided6/2017/2056/TPO
Re-Pollard Ash Tree located in Front Garden
95 Handside Lane Welwyn Garden City AL8 6SP
Received 13 Sept 2017
Decided - Granted6/2017/2736/EM
Erection of single storey rear extension following demolition of existing outbuilding
159 Parkway Welwyn Garden City AL8 6JA
Received 23 Nov 2017

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