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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29,002 approved · 4,819 refused · 2,219 withdrawn.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: 8 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 Counts reflect the last collected status; some records may be out of date.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 buildingLocal plan Our Local PlanPre-application advice Pre-application advice (planning applications)Conservation areas Schedule of properties removed from the Welwyn Conservation AreaArticle 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

  1. Decided - GrantedW6/2004/0646/EM

    ERECTION OF SINGLE STOREY SIDE & REAR EXTENSION AND EXTENSION TO DETACHED GARAGE

    79 Mill Green Road, Welwyn Garden City, AL7 3UX

    Received 30 Apr 2004
  2. Decided - GrantedS6/2013/1908/DS

    Discharge of condition 7 (ground investingation) and 12 (trial grouting) of planning permission S6/2012/1181/MA

    University of Hertfordshire, College Lane, Hatfield, AL10 9AB

    Received 4 Sept 2013
  3. Decided - Granted6/2021/0276/TPO

    Crown reduce 1 x Oak tree (T1) by 4m and width by 1m.

    43 Wellfield Road Hatfield AL10 0BY

    Received 29 Jan 2021
  4. Decided - Granted6/2021/2857/MAJ

    Change of use from former gasholder site and car dealership (Sui Generis) to industrial processes (E(g)(iii), general industrial (B2) and storage or distribution (B8) and erection of three new commercial units with associated access, servicing, landscaping and boundary treatments.

    17 Tewin Road Welwyn Garden City AL7 1BD

    Received 5 Oct 2021
  5. Decided - Withdrawn6/2024/1968/FULL

    Erection of a new dwelling

    37 Honeysuckle Gardens Hatfield AL10 8PL

    Received 14 Oct 2024
  6. Decided - GrantedS6/2014/1963/FP

    Erection of a part two storey and part single storey rear extension and single storey side extension

    14 Northaw Road West, Northaw, Potters Bar, EN6 4NR

    Received 3 Sept 2014
  7. Decided - RefusedS6/2008/0778/FP

    ERECTION OF SINGLE STOREY SIDE EXTENSION AND TWO STOREY SIDE & REAR EXTENSION WITH DORMERS FOLLOWING DEMOLITION OF GARAGE

    93 THE RIDGEWAY, CUFFLEY, HERTFORDSHIRE, EN6 4BG

    Received 13 May 2008
  8. Decided - Granted6/2016/2013/FULL

    Installation of new entrance door, door surround and glazed canopy. Installation of 4no. ground floor emergency exit fire doors.

    Unit 2 Shire Park Falcon Way Welwyn Garden City AL7 1TW

    Received 23 Sept 2016
  9. Decided - GrantedS6/2012/2671/FP

    Erection of a single storey extension to existing sports village

    University of Hertfordshire, De Havilland Sports and Social Club de Havilland Campus, Mosquito Way, HATFIELD, AL10 9EU

    Received 21 Dec 2012
  10. Decided - Granted6/2018/2471/HOUSE

    Erection of single storey side extension following demolition of side outbuilding

    39 Beehive Lane Welwyn Garden City AL7 4BJ

    Received 26 Sept 2018
  11. Decided - Granted6/2020/2983/LAWE

    Certificate of lawfulness for the existing floorspace at The Howard Centre to be used for any operation within Use Class E with the exception of unit 54.

    The Howard Centre Howardsgate Welwyn Garden City AL8 6HA

    Received 12 Nov 2020
  12. Appeal Decided - Allowed6/2016/2436/VAR

    Removal of condition 5 (Permitted Development Rights) on planning permission N6/2014/2154/FP.

    2A Whitehill Ayot St Peter Welwyn AL6 9AF

    Received 15 Nov 2016
  13. Decided - Granted6/2019/1690/HOUSE

    Extension of porch to side of main house

    Ayot Montfitchet Ayot St Peter AL6 9BH

    Received 3 Jul 2019
  14. Decided - Granted6/2022/1191/HOUSE

    Erection of rear extension following demolition of existing conservatory

    11A Heath Road Welwyn Hertfordshire AL6 0TP

    Received 24 May 2022
  15. Decided - GrantedN6/2009/0095/FP

    ERECTION OF SINGLE STOREY REAR EXTENSION

    35 Carleton Rise Welwyn AL6 9RP

    Received 20 Jan 2009
  16. Decided - Granted6/2026/1107/COND

    Submission of details pursuant to condition number 2 (materials) on planning permission 6/2026/0105/HOUSE

    60 Brookmans Avenue Brookmans Park AL9 7QQ

    Received 26 Jun 2026
  17. Decided - Granted6/2023/1618/MAJ

    Construction of a new Data Centre building with ancillary office space, provision of parking, vehicular circulation, sprinkler tanks, landscaping and other ancillary/associated works and the retention of 2 existing substations, following the demolition of the existing former, redundant, vacant Data Centre

    Hertfordshire Data Centre Mundells Welwyn Garden City AL7 1GE

    Received 4 Aug 2023
  18. Decided - Granted6/2024/0638/LB

    External and internal repair with repaint of all windows, external sofits and facias, front door and existing French doors

    Parkside Cottage 56 Mill Lane Welwyn AL6 9ES

    Received 4 Apr 2024
  19. Decided - GrantedN6/2013/1205/FP

    Erection of two first floor rear extensions

    24 High Oaks Road, WELWYN GARDEN CITY, AL8 7BH

    Received 10 Jun 2013
  20. Decided - GrantedN6/2014/0681/TC

    Removal of Apple tree located in rear garden

    15 Barleycroft Road, Welwyn Garden City, AL8 6JX

    Received 25 Mar 2014
  21. Decided - GrantedS6/2014/2557/FP

    Erection of single storey front, side and rear extension

    128 Crawford Road Hatfield AL10 0PA

    Received 24 Nov 2014
  22. Decided6/2018/2959/TPO

    Reduce 1 x Robinia tree by 2m in height & 1.5m in width and remove broken branch, and reduce 1 x Crab Apple tree by 1m in height & width - Conservation Area

    27 Welwyn Hall Gardens Welwyn AL6 9LF

    Received 16 Nov 2018
  23. Decided - Granted6/2017/2033/FULL

    Alterations to elevations including replacement cladding, installation of windows and doors and the erection of a bin store and boundary fencing

    Inspira House Martinfield Welwyn Garden City AL7 1GW

    Received 12 Sept 2017
  24. Decided - GrantedS6/2013/0793/FP

    Erection of orangery to rear elevation and alterations to replace existing garage

    19 Roe Green Lane, HATFIELD, AL10 0SH

    Received 8 Apr 2013

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

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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.

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