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
39,742Searchable applications
340Recorded as pending
86%Approval rate · 33,283 approved or refused records
4,755Refused applications

28,528 approved · 4,755 refused · 2,172 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 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 - GrantedN6/2014/1746/TP

    Reduction by 20% Willow tree covered by TPO260 T29

    15 Mornington Digswell Welwyn AL6 0AJ

    Received 5 Aug 2014
  2. Decided - Granted6/2019/0240/HOUSE

    Conversion of garage into habitable space

    55 Selwyn Crescent Hatfield AL10 9NW

    Received 4 Feb 2019
  3. Decided - Granted6/2015/2154/TPO

    Reduce oak tree by 30% covered by TPO 412

    53 Boundary Lane, Welwyn Garden City, AL7 4EG

    Received 16 Oct 2015
  4. Decided6/2018/0927/TPO

    Reduce 1 x Copper Beech tree by 4m height & 2.5m width - conservation area

    33 Bridge Road Welwyn Garden City AL8 6UG

    Received 6 Apr 2018
  5. Decided - GrantedN6/2014/0194/TC

    Pollard Willow tree and remove Ash tree

    60 Moorlands, Welwyn Garden City, AL7 4QG

    Received 29 Jan 2014
  6. Decided - Refused6/2021/0346/LAWP

    Certificate of lawfulness for the erection of a single storey rear extension

    3 Witchford Welwyn Garden City AL7 2PR

    Received 4 Feb 2021
  7. Decided - Granted6/2026/0954/EM

    Alterations and extension of block paved driveway

    71 Handside Lane Welwyn Garden City AL8 6SH

    Received 1 Jun 2026
  8. Decided - GrantedN6/2014/0856/TC

    Removal of Sycamore and Wild Plum tree and reduce side branches of Sycamore tree by upto 3 metres and crown Robinia tree by upto 2 metres

    6 Hobbs Hill Welwyn AL6 9DS

    Received 14 Apr 2014
  9. Decided - Granted6/2017/0227/EM

    Erection of single storey side and rear extension, following demolition of existing. Installation of 2 rooflights.

    5 Fordwich Road Welwyn Garden City AL8 6EX

    Received 7 Feb 2017
  10. Decided - Refused6/2018/0837/HOUSE

    Erection of single storey front extension

    6 Lydia Mews Welham Green Hatfield AL9 7PZ

    Received 29 Mar 2018
  11. Decided - GrantedS6/2015/0472/FP

    Retention of rear dormer, rooflights and window to east elevation at first floor level and alterations to rear single storey extension to include parapet boundary wall

    62 Georges Wood Road Brookmans Park Hatfield AL9 7BU

    Received 6 Mar 2015
  12. Decided - RefusedN6/2013/2692/FP

    Erection of two houses (4 bedroom) with associated landscaping and parking following demolition of existing dwelling

    1 Heathbrow Road Welwyn AL6 0QG

    Received 11 Dec 2013
  13. Decided - Granted6/2025/0864/FULL

    Installation of 5 air conditioning condensers to ground floor of southern elevation

    Rosanne House Block A Ground Floor Bridge Road Welwyn Garden City AL8 6UB

    Received 8 May 2025
  14. Decided - Granted6/2017/0802/LAWP

    Certificate of lawfulness for erection of single storey rear extension

    6 Homestead Road Hatfield AL10 0QL

    Received 20 Apr 2017
  15. Decided - Granted6/2017/0133/HOUSE

    Erection of single storey rear extension

    41 Osborne Road Little Heath Potters Bar EN6 1SB

    Received 25 Jan 2017
  16. Decided - GrantedN6/2009/2054/DS

    DISCHARGE OF CONDITION 4 (REVISED PLAN) FROM PLANNING PERMISSION N6/2009/1486/FP

    11A GUESSENS ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 6QW

    Received 21 Sept 2009
  17. Decided - Granted6/2016/2129/EM

    Erection of single storey conservatory to the rear of the property

    22 Brockswood Lane Welwyn Garden City AL8 7BG

    Received 12 Oct 2016
  18. Decided - Granted6/2023/1798/COND

    Submission of details pursuant to conditions 5 (Tree Protection Plan),12 (Construction Management Plan) and 13 (Site Waste Management Plan) on appeal decision APP/C1950/W/21/3269378 (planning permission 6/2020/0714/MAJ)

    Land at Oakleigh Farm Industrial Estate Codicote Road Welwyn AL6 9TY

    Received 29 Aug 2023
  19. Decided - GrantedN6/2009/2053/DS

    DISCHARGE OF CONDITION 3 (SAMPLES OF MATERIALS) FROM PLANNING PERMISSION NOTICE N6/2009/1156/FP

    29 MANDEVILLE RISE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7JT

    Received 22 Sept 2009
  20. Decided - GrantedN6/2013/0253/DS

    Discharge of condition 3 (level of obscuration of rear dormer window) of planning permission N6/2012/2458/S37B variation of condition 2 (approved plans) of planning permission (N6/2012/1717/FP Erection of two storey rear extension and new dormer windows on front elevations)

    83 Warren Way Digswell Welwyn AL6 0DL

    Received 5 Feb 2013
  21. Decided - Granted6/2018/1058/TPO

    Fell 1 x Oak tree (T1) covered by TPO 645 (2017)

    12 Sherrardspark Road Welwyn Garden City AL8 7JP

    Received 24 Apr 2018
  22. Decided - Granted6/2022/1143/HOUSE

    Erection of first floor extension with replacement roof and single storey front, side and rear extensions

    20 Georges Wood Road Hatfield AL9 7BT

    Received 18 May 2022
  23. Decided - Granted6/2020/1019/TPO

    Reduce 1 x Oak Tree [T6] by 20% Covered by TPO 382 (G1)

    37 The Ridgeway Cuffley Potters Bar EN6 4BB

    Received 6 May 2020
  24. Decided - Granted6/2023/1040/EM

    Formation of hardstanding on garden frontage

    61 Boundary Lane Welwyn Garden City AL7 4EG

    Received 17 May 2023

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