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29,002 approved · 4,819 refused · 2,219 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2018/2084/HOUSE
Retrospective erection of garden store
The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL
Received 10 Aug 2018
Decided - GrantedN6/2013/1656/FP
Erection of two storey rear extension with front ground floor infill
4 Mardley Heights Welwyn AL6 0TX
Received 1 Aug 2013
Decided - Granted6/2022/1422/EMT
Removal of dead hedgerow
33 Applecroft Road Welwyn Garden City AL8 6JZ
Received 20 Jun 2022
Decided - Granted6/2018/1071/VAR
Variation of condition 8 (statement of community use) on planning permission S6/2015/0016/S73A, dated 24/02/2015
Bishops Hatfield Girls School, Woods Avenue, Hatfield, AL10 8NL
Received 25 Apr 2018
Decided - Refused6/2021/2665/EMH
Installation of vehicular crossover and hardstanding to front
20 Breakmead Welwyn Garden City AL7 3HG
Received 14 Sept 2021
Decided6/2024/1849/TC
Reduce apple tree by 30%. Remove Norway spruce.
7 Handside Green Welwyn Garden City AL8 6SQ
Received 26 Sept 2024
Decided6/2021/3503/TC
To remove (fell) Leylandii (T1) from the rear garden. Replant with standard fruiting tree (native cherry or apple) in the same position in the rear garden.
40 Sandpit Road Welwyn Garden City AL7 3TJ
Received 20 Dec 2021
Decided - Granted6/2017/1047/EM
Erection of single storey rear and side extension, following demolition of existing timber rear extension and side outbuildings
27 Longcroft Lane Welwyn Garden City AL8 6EB
Received 15 May 2017
Decided - GrantedS6/2013/0516/LB
Erection of single storey rear extension and detached replacement garage
Sherwoods, West End Lane, Essendon, HATFIELD, AL9 6AU
Received 27 Feb 2013
Decided - Granted6/2021/2572/LAWP
Erection of a single storey side extension and front porch
19 Carbone Hill Northaw Potters Bar EN6 4PJ
Received 3 Sept 2021
Decided - Granted6/2021/1430/ADV
Installation of internally illuminated wall-mounted fascia signs
The Beacon Mosquito Way Hatfield AL10 9WN
Received 6 May 2021
Decided - GrantedN6/2008/0863/FP
ERECTION OF GARAGE
3 LYTTON GARDENS, WELWYN GARDEN CITY, HERTS, AL8 6EG
Received 30 May 2008
Decided - Granted6/2022/0907/HOUSE
Erection of single storey rear extension and alterations to garage roof to facilitate conversion of rear portion of garage to habitable space
16 Cubitts Close Digswell Welwyn AL6 0DZ
Received 19 Apr 2022
Decided - Granted6/2020/1296/FULL
Replacement of 3 chalets and tractor/maintenance store with new pod chalets and shower block
Cuffley Camp Outdoor Centre Carbone Hill Northaw Potters Bar EN6 4PR
Received 9 Jun 2020
Decided - Granted6/2024/2297/HOUSE
Erection of rear first-floor extension and alterations to fenestration
Ponsbourne Park Home Farm Cottage Newgate Street Hertford SG13 8QT
Received 29 Nov 2024
Decided - Granted6/2022/2124/EM
To replace roofline items (fascias, soffits, guttering and downpipes) to the front and rear of the property. The replacement items (from the Homeline range) to be visually similar and white-coloured — except that grey-coloured guttering and downpipes are proposed. To replace windows and doors to the front, side and rear of the property. The replacement windows and french doors (from the Fredericks Ultimate Collection) will be visually similar (with equal sight lines, white-coloured frames and rosewood cills) except that the glazed area of the front door (from the Hallmark range), but not the side panel, is reduced.
30 Woodland Rise Welwyn Garden City AL8 7LF
Received 13 Sept 2022
Decided - Withdrawn6/2020/0982/TPO
Reduce 1 x Beech Tree by 30% [TPO 149 T1]
3 Fern Grove Welwyn Garden City AL8 7ND
Received 30 Apr 2020
Decided - Granted6/2022/0809/HOUSE
Proposed conversion of garage to office, with a new timber and glass front porch and single storey rear extension.
18 Canonsfield Welwyn Hertfordshire AL6 0QD
Received 1 Apr 2022
Decided - Granted6/2026/0812/EMT
T1 & T2: Cherry (Prunus sp.), dead. Fell and replant
18 Stanborough Road Welwyn Garden City AL8 6XD
Received 8 May 2026
Decided - Granted6/2018/0247/EM
Erection of 2 Sheds
31 Reddings Welwyn Garden City AL8 7LA
Received 26 Jan 2018
Decided - GrantedN6/2008/0241/TP
REDUCTION OF TWO OAKS AND ONE SWEET CHESNUT COVERED BY TPO 24, AREA 3, BACK TO PREVIOUS PRUNING POINTS
22 Mardley Hill Welwyn AL6 0TS
Received 8 Feb 2008
Decided - GrantedN6/2007/0966/CD
RECYCLING OF BUILDERS WASTE TO EXTRACT TOPSOIL TOGETHER WITH LOWERING OF GROUND LEVEL AND PROVISION OF SCREEN BUND.
Burnside Hertford Road Hatfield AL9 5RB
Received 21 Jun 2007
Decided - GrantedW6/2004/0552/EM
ERECTION OF TWO STOREY REAR EXTENSION INCORPORATING SWIMMING POOL IN BASEMENT AND LOFT CONVERSION (AS VARIATION OF PERMISSION W/2003/1751/EM )
7B Hall Grove, Welwyn Garden City, AL7 4PJ
Received 7 Apr 2004
Decided - Granted6/2020/1516/EMT
Reduce 1 x Cherry tree by 1m height & width
41 Barleycroft Road Welwyn Garden City AL8 6JX
Received 26 Jun 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