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
40,295Searchable applications
322Recorded as pending
86%Approval rate · 33,786 approved or refused records
4,816Refused applications

28,970 approved · 4,816 refused · 2,217 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 7 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2016/1152/COND

    Approval of details reserved by condition 4 (landscaping), condition 5 (arboricultural scheme), condition 7 (construction method statement) and condition 8 (highways) on planning permission S6/2014/2179/MA

    Land rear of 44-52 Garden Avenue Hatfield AL10 8LN

    Received 1 Jun 2016
  2. Decided - Granted6/2019/0690/EM

    Formation of vehicle crossover and hardstanding

    31 Hollybush Lane Welwyn Garden City AL7 4JH

    Received 19 Mar 2019
  3. Decided - Granted6/2016/0314/COND

    Approval of details reserved by condition 2 (materials) on planning permission S6/2015/1470/FULL

    62 Pine Grove, Brookmans Park, Hatfield, AL9 7BW

    Received 25 Feb 2016
  4. Decided - Granted6/2025/1943/HOUSE

    Erection of two storey rear extension

    7 Roundwood Drive Welwyn Garden City AL8 7JZ

    Received 10 Sept 2025
  5. Decided - GrantedW6/2007/0197/EM

    ERECTION OF SINGLE STOREY EXTENSION FOLLOWING DEMOLITION OF EXISTING OUTBUILDINGS

    40 Great Ley, Welwyn Garden City, AL7 4TR

    Received 6 Feb 2007
  6. Decided - Granted6/2021/2535/HOUSE

    Erection of first floor side extension and loft conversion with 1 x rear dormer

    11 Ellenbrook Crescent Hatfield AL10 9RP

    Received 31 Aug 2021
  7. Decided - Granted6/2021/1489/HOUSE

    Erection of a single storey side and rear extension

    12 Broadfield Place Welwyn Garden City AL8 6LJ

    Received 11 May 2021
  8. Decided - Withdrawn6/2017/1486/VAR

    Variation of condition 1 (approved plans) on planning permission 6/2015/1960/FULL.

    Unit 13 Peartree Farm Welwyn Garden City AL7 3UW

    Received 6 Jul 2017
  9. Decided - Granted6/2022/1651/LB

    Re-construction of demolished Walled Garden lean to store

    Northaw House Coopers Lane Northaw Potters Bar EN6 4NG

    Received 12 Jul 2022
  10. Decided - GrantedN6/2007/1325/FP

    PROPOSED ERECTION OF FIRST FLOOR LINK BUILDING BETWEEN THE NEW EXTENSION AND THE EXISTING ANNEX BUILDING

    HOMESTEAD COURT HOTEL, HOMESTEAD LANE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 4LX

    Received 5 Sept 2007
  11. Decided - Granted6/2021/3543/EM

    Loft conversion with new dormer to rear.

    58 Great Ganett Welwyn Garden City AL7 3DE

    Received 23 Dec 2021
  12. Decided - GrantedN6/2004/1451/FP

    FRONT PORCH INFILL

    2 Tempsford Welwyn Garden City AL7 2PB

    Received 1 Oct 2004
  13. Decided - RefusedN6/2009/0123/FP

    INSTALLATION OF MEZZANINE FLOOR

    UNIT 4 MALLOW PARK, WATCHMEAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 1GX

    Received 21 Jan 2009
  14. Decided - Granted6/2024/1494/HOUSE

    Erection of a detached double garage

    32 Warrengate Road North Mymms AL9 7TX

    Received 6 Aug 2024
  15. Decided - Granted6/2026/1331/EMT

    T1 Purple Leaved Plum - Reduce by 30% and shape

    7 Homestead Lane Welwyn Garden City AL7 4LT

    Received 29 Jul 2026
  16. Decided - GrantedS6/2013/2687/FP

    Proposed alterations to existing garage and erection of single storey front extension

    5 Bradmore Way, Brookmans Park, Hatfield, AL9 7QY

    Received 24 Dec 2013
  17. Decided - Granted6/2015/2202/HOUSE

    Single and two storey side extension to provide living accommodtion

    65 Pooleys Lane, Welham Green, Hatfield, AL9 7LG

    Received 28 Oct 2015
  18. Decided - Refused6/2024/0295/HOUSE

    Erection of two-storey side extension, Internal alterations and all associated works

    67 Valley Road Welwyn Garden City AL8 7DR

    Received 13 Feb 2024
  19. Decided - Granted6/2017/0299/HOUSE

    Erection of single storey front and side extensions and a part two storey, part single storey rear extension.

    18A London Road Woolmer Green Knebworth SG3 6JP

    Received 16 Feb 2017
  20. Decided6/2021/3398/TC

    Weeping Willow tree (T1) in front garden of 166 Parkway - crown reduction by 50%

    166 Parkway Welwyn Garden City AL8 6HZ

    Received 3 Dec 2021
  21. Decided - GrantedW6/2009/1761/EM

    INSTALLATION OF ROOF LANTERN

    16 FORDWICH ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6EY

    Received 13 Aug 2009
  22. Decided6/2023/1200/TC

    1 x Lawson cypress to dismantle in sections to ground level due to proximity to neighbour's property and it is encroaching onto the patio

    2 Thumbswood Welwyn Garden City AL7 4QE

    Received 6 Jun 2023
  23. Decided - WithdrawnS6/2008/2405/FP

    LOFT CONVERSION COMPRISING HIP TO GABLE, REAR DOMER WITH JULIET BALCONY AND INSTALLATION OF ROOFLIGHT TO FRONT ELEVATION

    17 THE GROVE, BROOKMANS PARK, HATFIELD, HERTS, AL9 7RL

    Received 20 Jan 2009
  24. Decided - Granted6/2017/0054/FULL

    Subdivision of existing cottage and site to form 1x 2 bedroom cottage and 1x 1 bedroom cottage.

    1 Suttons Farm Bungalows Woodcock Hill St Albans AL4 9HJ

    Received 12 Jan 2017

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