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

39,797Searchable applications

298Recorded as pending

86%Approval rate · 33,365 approved or refused records

4,769Refused applications

28,596 approved · 4,769 refused · 2,178 withdrawn. Received dates in our records: 29 Apr 1948 to 26 Oct 2026. Most recent record check: 28 Oct 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2023/1525/EM
Installation of new front door and electric car charging point
19 Brockswood Lane, Welwyn Garden City, AL8 7BE
Received 20 Jul 2023
Decided - Granted6/2022/1183/LAWP
Certificate of lawfulness for hip to gable rear dormer loft conversion
9 Selwyn Drive Hatfield AL10 9NH
Received 23 May 2022
Decided - GrantedN6/2004/1392/FP
ERECTION OF REAR CONSERVATORY
5 Rivenhall End Welwyn Garden City AL7 2PJ
Received 15 Sept 2004
Decided - GrantedN6/2009/1684/TP
REDUCTION OF OAK TREES BY 20% T1 & T2 COVERED BY TPO 193
8 Firway Close Welwyn AL6 0RE
Received 5 Aug 2009
Decided - Granted6/2025/1318/FULL
Installation of external staircase from ground floor to first floor with new external door and porch canopy to enable independent access to first floor accommodation
Woodman Inn 21 Warrengate Road North Mymms Hatfield AL9 7TT
Received 24 Jun 2025
Decided - WithdrawnH/1994/5207/EM
Erection of workshop in rear garden
8 Glebe Cottages Essendon Hatfield AL9 6HQ
Received 1 Jan 1994
Decided - GrantedW6/2008/0773/EM
ERECTION OF REAR CONSERVATORY
53 PENTLEY PARK, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7SF
Received 9 May 2008
Decided6/2017/2367/TPO
2 x Oaks to reduce by 3m height & width - Conservation Area
7 Hawthorns Welwyn Garden City AL8 7SE
Received 16 Oct 2017
Decided - Granted6/2016/1057/EM
Removal of Conifer tree
128 The Vineyard, Welwyn Garden City, AL8 7PU
Received 31 May 2016
Decided - Granted6/2018/0859/LAWE
Certificate of lawfulness for continued existing use of static caravan as a dwelling
Postern Gate Farm Newgate Street Village Hertford SG13 8QR
Received 3 Apr 2018
Decided - RefusedS6/2006/0211/FP
ERECTION OF REPLACEMENT DETACHED DWELLING AND CAR PORT
West Lodge Green Lanes Hatfield AL10 9JX
Received 16 Feb 2006
Decided - GrantedN6/2006/0160/FP
ERECTION OF REAR CONSERVATORY
19 Dellcott Close Welwyn Garden City AL8 7BB
Received 6 Feb 2006
Decided - GrantedS6/2009/2397/LU
CERTIFICATE OF LAWFULNESS FOR A PROPOSED SHED
82 TOLMERS ROAD, CUFFLEY, POTTERS BAR, HERTFORDSHIRE, EN6 4JY
Received 20 Oct 2009
Decided - Refused6/2021/0248/FULL
Change of use of land to residential (Use Class C3) to form part of existing residential garden, and erection of garden fence
36 Sheepcote Welwyn Garden City AL7 4QD
Received 27 Jan 2021
Decided - Granted6/2018/2212/HOUSE
Erection of single storey side extension
3 Briary Wood Lane Welwyn AL6 0TE
Received 28 Aug 2018
Decided - Split6/2017/2592/COND
Submission of details pursuant to condition 1 (materials samples), 2 (details of windows and doors), 3 (details of eaves, parapets, verges, abutments and chimney stack) and 5 (rainwater goods materials) on planning permission 6/2016/0995/FULL
Oshwal Centre Coopers Lane Road Northaw Potters Bar EN6 4DG
Received 8 Nov 2017
Decided - Granted6/2018/2947/HOUSE
Erection of part single part two storey side/rear extension following demolition of existing single storey rear extension and conservatory and alterations to openings
4 High Road Essendon Hatfield AL9 6HW
Received 15 Nov 2018
Decided - Granted6/2022/0418/HOUSE
Erection of single storey rear extension
147 Tolmers Road Cuffley Potters Bar EN6 4JP
Received 23 Feb 2022
Decided6/2023/2260/TC
T1-Cherry-Fell to ground level, T2-Sycamore-Lift crown to 6 metres
10 Brockswood Lane Welwyn Garden City AL8 7BG
Received 8 Nov 2023
Decided - GrantedS6/2009/1167/FP
GLASS REINFORCED PLASTIC KIOSK TO HOUSE CHEMICAL DELIVERY EQUIPMENT AND CROSS SITE DUCTING
NORTH MYMMS WATER TREATMENT WORKS, WARRENGATE ROAD, NORTH MYMMS, HATFIELD, HERTFORDSHIRE, AL9 7TU
Received 28 May 2009
Decided - GrantedC6/1988/1250/FP
Single storey side extension
134 Boundary Lane, Welwyn Garden City, AL7 4DF
Received 1 Jan 1988
Decided - Granted6/2021/1815/HOUSE
Modification to front entrance steps, relocation of en suite rooflight, installation of a sun pipe, internal renovations
8 Mimram Place Welwyn AL6 9HQ
Received 10 Jun 2021
Decided - Granted6/2016/0361/FULL
Erection of single storey extension on the rear elevation of the Lowerfield Building
Swallow Dell Primary School, Blackthorn Road, Welwyn Garden City, AL7 3JP
Received 4 Mar 2016
Decided - GrantedW6/2004/1190/EM
NEW ENTRANCE PORCH
51 Brockswood Lane, Welwyn Garden City, AL8 7BU
Received 6 Aug 2004

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