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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
40,146Searchable applications
300Recorded as pending
86%Approval rate · 33,676 approved or refused records
4,802Refused applications

28,874 approved · 4,802 refused · 2,208 withdrawn. Received dates in our records: 29 Apr 1948 to 26 Oct 2026. Most recent record check: 2 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/3134/TPO

    T3 - crown reduce 1 x oak tree by 2-3m and remove deadwood

    16 Mardley Hill Welwyn AL6 0TN

    Received 25 Oct 2021
  2. Decided - Withdrawn6/2023/1268/HOUSE

    Retention and remodeling of the as-built single storey side extension with loft accommodation within roofspace and associated works including dormer windows and rooflights, alterations to main dwelling with an attached front garage and link extension. Erection of outbuilding (Part retrospective)

    95 Robbery Bottom Lane Welwyn Hertfordshire AL6 0UL

    Received 16 Jun 2023
  3. Decided - GrantedN6/2015/0754/FP

    Erection of single storey side extension

    8 Mardley Hill Welwyn AL6 0TN

    Received 7 Apr 2015
  4. Decided - Granted6/2025/2210/EM

    Erection of a side and rear extension

    23 Rooks Hill Welwyn Garden City AL8 6EU

    Received 17 Oct 2025
  5. Decided - Withdrawn6/2019/0606/HOUSE

    WITHDRAW FOR NEXTErection of a single storey rear extension with conversion of garage into habitable space

    14 Chalk Dale Welwyn Garden City AL7 2AP

    Received 14 Mar 2019
  6. Decided - GrantedS6/2007/0440/FP

    ERECTION OF SINGLE STOREY SIDE EXTENSION.

    Cattlegate Farm Cattlegate Road Northaw ENFIELD EN2 8AU

    Received 15 Mar 2007
  7. Decided6/2024/2050/TC

    Remove 1 x Beech tree

    5 Mill Lane Welwyn AL6 9EY

    Received 23 Oct 2024
  8. Under Consideration6/2022/2761/COND

    Submission of details pursuant to condition 1 (Materials) on planning permission 6/2022/1431/HOUSE

    12 Cromer Hyde Lane Lemsford Welwyn Garden City Hertfordshire AL8 7XE

    Received 5 Dec 2022
  9. Decided - Refused6/2017/1316/EM

    Erection of a two storey front side and rear extension

    12 The Orchard Welwyn Garden City AL8 7PL

    Received 16 Jun 2017
  10. Decided - Refused6/2018/2553/HOUSE

    Retention of rear dormer

    170 Crawford Road Hatfield AL10 0PA

    Received 4 Oct 2018
  11. Decided - Granted6/2016/0689/EM

    Erection of single storey rear conservatory

    69 Attimore Road, Welwyn Garden City, AL8 6LG

    Received 14 Apr 2016
  12. Decided - Granted6/2018/2411/HOUSE

    Erection of ground floor front porch and installation of window

    34 Sylvandale Welwyn Garden City AL7 2HT

    Received 19 Sept 2018
  13. Decided - Granted6/2020/2203/HOUSE

    Demolition of existing conservatory, erection of single storey rear extension and extension of existing terrace

    Lagern Vineyards Road Northaw Potters Bar EN6 4PH

    Received 27 Aug 2020
  14. Decided - Granted6/2023/0600/LAWP

    Certificate of lawfulness for a single storey rear extension

    14 Holliers Way Hatfield Hertfordshire AL10 8HL

    Received 17 Mar 2023
  15. Decided - GrantedS6/2008/1102/FP

    ERECTION OF REAR CONSERVATORY, DETACHED GARAGE AND BOUNDARY FENCE

    3 Green Lanes Hatfield AL10 9JT

    Received 4 Jul 2008
  16. Decided6/2022/0533/TC

    T1 x 6 - Lombardy Poplars at end of garden Reduce by 20ft as granted in previous applications

    135 Parkway Welwyn Garden City Hertfordshire AL8 6JB

    Received 7 Mar 2022
  17. Decided - Granted6/2022/0969/LAWP

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

    5 Tudor Road Welwyn AL6 9JU

    Received 25 Apr 2022
  18. Decided - Granted6/2022/1645/LB

    Listed building consent for roof retiling, existing chimneys repointed and rehaunched, replace existing rooflight with smaller conservation rooflight, cement render repaired and painted, verge overhang increased, ridge reused, replacement gate, repointing of brickwork, new French drain and fenestration alterations

    9-11 Church Street Welwyn Hertfordshire AL6 9LN

    Received 12 Jul 2022
  19. Decided - GrantedW6/2004/0252/EM

    ERECTION OF SINGLE STOREY REAR EXTENSION

    24 Longcroft Lane, Welwyn Garden City, AL8 6EA

    Received 19 Feb 2004
  20. Decided - GrantedN6/2004/0649/FP

    ERECTION OF REAR CONSERVATORY

    134 Longcroft Lane Welwyn Garden City AL8 6EN

    Received 5 May 2004
  21. Decided - Granted6/2018/1419/EM

    Reduce 1 x Prunus tree by 3m, 1x Hawthorn by 2.5m, 1 x Holly tree by 1.20m

    1 The Old Drive Welwyn Garden City AL8 6TB

    Received 29 May 2018
  22. Decided - Withdrawn6/2017/1730/EM

    Replace chimney brickwork of air raid shelter

    14 The Valley Green Welwyn Garden City AL8 7DQ

    Received 7 Aug 2017
  23. Decided - GrantedN6/2009/2655/FP

    CHANGE OF USE FROM OFFICE ACCOMMODATION (B1) TO 3 TWO BEDROOM FLATS (C3)

    17-17A Mill Lane Welwyn AL6 9EU

    Received 7 Dec 2009
  24. Decided - Granted6/2024/0880/FULL

    Proposed patio, changes to fenestration and installation of retractable awnings

    Stanborough Park Terranova Restaurant Stanborough Road Welwyn Garden City AL8 6DF

    Received 9 May 2024

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

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    Planning permission drawings: how to read plans

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  • 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.

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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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