PlanningTrack
Get started

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
33,833Searchable applications
313Recorded as pending
87%Approval rate · 28,312 approved or refused records
3,716Refused applications

24,596 approved · 3,716 refused · 1,759 withdrawn. Received dates in our records: 29 Apr 1948 to 14 Oct 2026. Most recent record check: 21 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 Counts reflect the last collected status; some records may be out of date.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 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 - GrantedN6/2010/0020/FP

    ERECTION OF FIRST FLOOR SIDE EXTENSION AND SIDE DORMER WINDOW

    42 Robbery Bottom Lane Welwyn AL6 0UN

    Received 4 Jan 2010
  2. Decided - WithdrawnN6/2014/0260/FP

    Erection of stable building, formation of manege and retention of hardstanding

    Land to rear of 17 The Avenue Welwyn AL6 0PW

    Received 30 Jan 2014
  3. Decided - Granted6/2020/3438/COND

    Submission of details pursuant to condition 2 (landscaping) on planning permission 6/2020/2633/VAR

    10 Hawkshead Lane North Mymms Hatfield AL9 7TB

    Received 23 Dec 2020
  4. Decided - WithdrawnS6/2009/1589/LU

    CERTIFICATE OF LAWFULNESS FOR EXISTING SINGLE STOREY SIDE AND REAR EXTENSIONS

    36 HASELDINE MEADOWS, HATFIELD, HERTFORDSHIRE, AL10 8HB

    Received 28 Jul 2009
  5. Decided - GrantedN6/2009/0761/TP

    20 % CROWN REDUCTION OF BLUE CEDAR TREE COVERED BY T9 TPO 238

    Velvet Lawns 21B Canonsfield Welwyn AL6 0QB

    Received 8 Apr 2009
  6. Decided - GrantedC6/1987/0808/FP

    Single storey rear extension

    9 Nut Grove, Welwyn Garden City, AL8 7SQ

    Received 1 Jan 1987
  7. Decided - Refused6/2022/1054/FULL

    Erection of 2 bedroom detached dwelling

    574 Howlands Welwyn Garden City AL7 4ET

    Received 5 May 2022
  8. Decided - Granted6/2020/1038/HOUSE

    Erection of part single/part two storey rear extension, single storey front extension, new pitch roof over side addition and alterations to openings

    87 Bramble Road, Hatfield, AL10 9SB

    Received 11 May 2020
  9. Decided - Refused6/2021/1558/HOUSE

    Loft conversion with rear dromer and front skylights

    41 Clover Way Hatfield AL10 9FN

    Received 17 May 2021
  10. Decided - GrantedN6/2014/1386/FP

    Erection of single storey rear extension and loft conversion to include dormer window

    51 Chambers Grove, Welwyn Garden City, AL7 4FG

    Received 19 Jun 2014
  11. Decided - Granted6/2019/2495/EM

    Erection of timber structure

    45 Elmwood Welwyn Garden City AL8 6LD

    Received 7 Oct 2019
  12. Decided - Granted6/2015/1907/EM

    Fell Willow tree

    Land adj to 1, Woodside House Bridge Road, Welwyn Garden City, AL8 6UJ

    Received 26 Aug 2015
  13. Decided - GrantedS6/2015/0346/S73B

    Variation of condition 2 (approved plans) of planning application S6/2014/1099/FP (Erection of three 2 bed dwellings following demolition of existing garages)

    Garages at Branch Close Hatfield AL10 0TW

    Received 20 Feb 2015
  14. Decided - Withdrawn6/2019/0435/FULL

    Erection of 1 x dwelling following demolition of existing dwelling

    2 Danesbury Park Road Welwyn AL6 9SE

    Received 26 Feb 2019
  15. Decided - GrantedW6/2014/1269/EM

    Erection of single storey rear extension

    82 Walnut Grove, Welwyn Garden City, AL7 4EU

    Received 5 Jun 2014
  16. Decided - Refused6/2020/2492/EM

    Erection of hardstanding at front and alterations to front hedgerow

    91 Broomhills Welwyn Garden City AL7 1RE

    Received 29 Sept 2020
  17. Decided - Granted6/2021/1841/COND

    Submission of details pursuant to condition 2 (noise levels in external amenity areas), on planning permission 6/2018/2863/FULL

    36 The Ridgeway Cuffley Potters Bar EN6 4AX

    Received 15 Jun 2021
  18. Decided - GrantedS6/2014/0977/NM

    Non material amendment following approval of planning permission S6/2013/0899/FP - Stepped back extension from the boundary. Not to overhang the eaves on boundary side

    25 Theobalds Road, Cuffley, Potters Bar, EN6 4HQ

    Received 7 May 2014
  19. DecidedN6/2013/1933/DS

    Discharge of condition 3 (materials) of planning permission N6/2013/0279/FP - Erection of part single, part two storey extensions to rear, and garage conversion, loft conversion with dormer to rear and insertion of first floor side window

    58 Attimore Road, Welwyn Garden City, AL8 6LP

    Received 9 Sept 2013
  20. Decided - Granted6/2026/0564/EM

    Part single storey and part two storey rear extension with replacement side window on the first floor and block up the existing ground-floor side window to the kitchen

    16 Rosedale Welwyn Garden City AL7 1DR

    Received 27 Mar 2026
  21. Decided - GrantedS6/2014/1127/DS

    Approval of details reserved by condition 7 (Noise) and 12 (Solar Photovoltaic Scheme) of planning permission S6/2013/0830/MA

    Land at Green Close and Station Road, Brookmans Park, Hatfield, AL9 7ST

    Received 13 May 2014
  22. Decided - Granted6/2021/2522/LAWP

    Certificate of lawfulness for rear dormer loft conversion

    47 Bramble Road Hatfield AL10 9RZ

    Received 27 Aug 2021
  23. Decided - Granted6/2026/0243/LAWP

    Certificate of lawfulness for hip-gable loft conversion, construction of dormer window, insertion of skylights, insertion of flank window and installation of new front door

    10 The Gardens Brookmans Park AL9 7UL

    Received 11 Feb 2026
  24. Decided - Granted6/2016/0321/HOUSE

    Erection of first floor rear extension together with alterations to openings on side and rear elevations

    16 Daniells, Welwyn Garden City, AL7 1PZ

    Received 25 Feb 2016

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

Applications by postcode area

Get emailed about new planning applications in Welwyn Hatfield

Area alerts send a daily or weekly email with new applications and decisions near a postcode, filtered by project type. £29 a month, up to 3 areas. Records are limited to the councils we collect.

Set up an area alert

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 Updated

  • 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 Updated

  • 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 Updated

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

More planning authorities in England

Browse all authorities