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England · Local authority

Welwyn Hatfield Borough Council
Planning applications.

Explore collected planning applications and decisions for Welwyn Hatfield Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates
18,104Searchable applications
298Recorded as pending
86%Approval rate · 14,582 approved or refused records
2,018Refused applications

12,564 approved · 2,018 refused · 918 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 11 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 Counts reflect the last collected status; some records may be out of date.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 - Refused6/2020/1357/HOUSE

    First floor side extensions, part single/part two storey front and rear extension, insertion of rooflights and alterations to openings

    9 Calder Avenue Hatfield AL9 7AH

    Received 15 Jun 2020
  2. Decided - Granted6/2022/0052/EM

    Erection of 1 x shed in rear garden involving demolition of existing 2 x sheds

    65 Lemsford Lane Welwyn Garden City AL8 6YN

    Received 10 Jan 2022
  3. Decided - Granted6/2020/2656/TPO

    T1 Oak crown reduction from 9.6m to 8m and height reduction 17m to 15m. T2 Oak crown reduction from 17.4m to 14m wide and height from 17m to 15m.

    28 Mymms Drive Hatfield AL9 7AF

    Received 13 Oct 2020
  4. Decided6/2020/2006/TC

    1 x Holly to fell to ground level 4 x Lawson Cypress to fell to ground level 1 x Holly to fell to ground level

    18 Fordwich Road Welwyn Garden City AL8 6EY

    Received 11 Aug 2020
  5. Decided - Refused6/2026/0563/LAWP

    Certificate of lawfulness for the erection of a part single-storey and part two-storey rear extension, replacement window to side elevation, and block up the existing kitchen ground-floor side window

    16 Rosedale Welwyn Garden City AL7 1DR

    Received 27 Mar 2026
  6. Decided - Granted6/2026/0474/LAWE

    Certificate of lawfulness for the existing use of the property as a HMO (C4)

    17 Wood Vale Hatfield AL10 8TT

    Received 16 Mar 2026
  7. Decided6/2021/2655/TC

    Reduce 1 x Ash tree (T1) by 1.5m covered by conservation area

    1 Brockswood Lane Welwyn Garden City AL8 7BA

    Received 13 Sept 2021
  8. Decided - Granted6/2023/0411/EM

    Single storey rear extension with lantern roof light, plus demolition and replacement of existing garage building. New side gate and bin store

    102 Handside Lane Welwyn Garden City AL8 6SY

    Received 22 Feb 2023
  9. Decided - Granted6/2021/1084/HOUSE

    Erection of single storey side/front extension, loft conversion with 1 x gable end window and insertion of 2 x rear facing roof lights

    4 Blakemere Road Welwyn Garden City AL8 7PJ

    Received 1 Apr 2021
  10. Appealed6/2025/2248/FULL

    Erection of a single chalet dwelling

    37 Mardley Avenue Welwyn AL6 0TU

    Received 23 Oct 2025
  11. Decided - Granted6/2025/2488/HOUSE

    Erection of single storey rear extension to replace existing and insertion of roof lights to the rear slope

    54 Parkway Welwyn Garden City AL8 6HH

    Received 28 Nov 2025
  12. Decided - Granted6/2020/2450/COND

    Submission of details pursuant to conditions 3, 4 and 5 on planning permission 6/2019/1873/FULL

    Unit 1 The Point Swallowfields Welwyn Garden City AL7 1WL

    Received 23 Sept 2020
  13. Decided - Granted6/2021/3455/COND

    Submission of details pursuant of conditions 1 (construction management plan), 2 (landscaping), 3 (external lighting), 4 (materials) on planning permission 6/2021/0417/FULL

    12 Firway Welwyn AL6 0RD

    Received 9 Dec 2021
  14. Decided - Withdrawn6/2020/0103/FULL

    Retention of mobile home for security use and 2 x shipping containers for storage and office use

    Cuffley Gate Sopers Road Cuffley Potters Bar EN6 4RY

    Received 16 Jan 2020
  15. Decided - Granted6/2022/0358/PN27

    Prior approval for the construction of an additional storey to facilitate the enlargement of the dwellinghouse to a maximum of approximately 8.5m in height

    33 Codicote Road Welwyn AL6 9TT

    Received 15 Feb 2022
  16. Decided - Granted6/2023/0586/FULL

    Retention of temporary classroom

    Land at De Havilland Campus University of Hertfordshire Mosquito Way Hatfield AL10 9UF

    Received 14 Mar 2023
  17. Decided - Refused6/2023/2292/HOUSE

    Installation of 6 roof light windows and a small dormer window to facilitate a loft conversion

    3 Butterwick Way Welwyn AL6 9GH

    Received 13 Nov 2023
  18. Decided - Granted6/2020/2633/VAR

    Variation of condition 5 (approved plans) on planning permission 6/2017/2346/MAJ

    10 Hawkshead Lane Hatfield AL9 7TB

    Received 12 Oct 2020
  19. Decided - Granted6/2021/2734/EMT

    Prune T1 Silver birch located at the front of property according to the following specifications: - Lateral crown reduction by removing 2.5 metres growth pruning back to suitable growth points to leave a balanced crown and to reduce tip end weight, overhang over street lamp and road, - Crown clean removing any damaged, diseased and deadwood

    31 Digswell Road Welwyn Garden City AL8 7PB

    Received 22 Sept 2021
  20. Decided - Refused6/2026/0692/HOUSE

    Alterations and extension to roof with rear dormer and skylights to front roofslope

    60 Pooleys Lane Welham Green Hatfield AL9 7LF

    Received 17 Apr 2026
  21. Decided - Refused6/2026/0027/COND

    Submission of details pursuant to condition number 1 (Construction Management Plan) on planning permission 6/2024/2237/VAR

    Land adjacent to The Warren 8 Carbone Hill Northaw Potters Bar EN6 4PL

    Received 7 Jan 2026
  22. Decided - Withdrawn6/2021/1226/EM

    Construct off-street car parking space

    185 Heronswood Road Welwyn Garden City AL7 3JH

    Received 15 Apr 2021
  23. Decided - Granted6/2022/1759/ADV

    Placement of a fascia sign with individually internally illuminated halo letters.

    28 High View Hatfield Hertfordshire AL10 8HZ

    Received 26 Jul 2022
  24. Decided - Refused6/2020/0824/HOUSE

    Replacement front fence

    21 Lemsford Village Welwyn Garden City AL8 7TN

    Received 2 Apr 2020

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

View all applications

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

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    Planning application documents: what to read first

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    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.

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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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