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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28,874 approved · 4,802 refused · 2,208 withdrawn.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: 1 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2017/1467/HOUSE

    Remodelling of the existing dwelling to include the erection of wrap around extension following demolition of side extension and front porch

    Millers Carbone Hill Northaw Newgate Street SG13 8RG

    Received 4 Jul 2017
  2. Decided - Granted6/2016/2236/TPO

    Reduce Poplar by 50%

    5 Fordwich Road Welwyn Garden City AL8 6EX

    Received 25 Oct 2016
  3. Decided - Granted6/2017/1562/PN8

    Prior approval for the erection of a single storey rear extension measuring 6.5m in depth, 3m in height and 2.5m to the eaves.

    5 Firway Close Welwyn AL6 0RE

    Received 17 Jul 2017
  4. Decided - Granted6/2023/1479/HOUSE

    Part conversion of garage into habitable accommodation. Alterations to openings. Erection of a part single, part first floor, part two storey side and rear extensions including pergola. Rooflights to existing roof. Landscape works. Air source heat pump. Vent pipes. Increasing height of existing elevations. Loft conversion

    47 Blakemere Road Welwyn Garden City AL8 7PQ

    Received 17 Jul 2023
  5. Under Consultation6/2026/1798/EM

    Single Storey Rear infill extension with internal alterations

    19 Sherrardspark Road Welwyn Garden City AL8 7JW

    Received 8 Oct 2026
  6. Decided - GrantedN6/2014/1568/FP

    Erection of two sand storage silos

    Sika Limited, Watchmead, Welwyn Garden City, AL7 1BQ

    Received 29 Jul 2014
  7. Decided - Granted6/2020/2218/HOUSE

    Erection of two storey side and rear extension, erection of single storey front and rear extensions

    11 Holly Road Knebworth SG3 6LL

    Received 28 Aug 2020
  8. Decided - Granted6/2018/0309/HOUSE

    Erection of 2 x single storey rear extensions following demolition of existing rear conservatory

    3 Barleycroft Green Welwyn Garden City AL8 6JY

    Received 31 Jan 2018
  9. Decided - Refused6/2024/0205/HOUSE

    Erection of first floor side extension

    10 Robbery Bottom Lane Welwyn AL6 0UW

    Received 1 Feb 2024
  10. Decided - Granted6/2016/1035/EM

    Erection of single storey rear extension

    403 Howlands, Welwyn Garden City, AL7 4HW

    Received 24 May 2016
  11. Decided - Granted6/2025/2272/HOUSE

    Erection of front railings and gate, raising the height of existing brick piers and associated landscaping

    32 The Ridgeway Cuffley Potters Bar EN6 4AX

    Received 27 Oct 2025
  12. Decided - GrantedS6/2009/2726/S73B

    VARIATION OF CONDITION 5 (OF APPLICATION S6/2009/2273/FP) FROM 'NO CONSTRUCTION WORKS (INCLUDING DEMOLITION) TO THE EXISTING ROOF OF THE DWELLINGHOUSE SHALL BE COMMENCED ON SITE BETWEEN THE 1ST MAY AND THE END OF AUGUST INCLUSIVE AND BETWEEN THE 1ST NOVEMBER AND THE END OF FEBRUARY IN ANY YEAR. IN ADDITION, WORKS CAN ONLY BE CARRIED OUT IF TEMPERATURES ARE ABOVE 8 DEGREES CELSIUS IN THE SPRING (MARCH/APRIL) PERIOD. ANY OTHER TIMES AND TEMPERATURES ARE TO BE APPROVED IN WRITING BY THE LOCAL PLANNING AUTHORITY. A SUITABLE REPLACEMENT ROOSTING SITE MUST BE CONSTRUCTED BEFORE ANY WORKS TO THE ROOF OF THE EXISTING HOUSE COMMENCE.

    VINE COTTAGE, WELL ROAD, NORTHAW, POTTERS BAR, HERTFORDSHIRE, EN6 4BL

    Received 23 Dec 2009
  13. Decided - Granted6/2026/1326/HOUSE

    Installation of two air conditioning units, one to each side elevation.

    7 Elmwood Welwyn Garden City AL8 6LD

    Received 29 Jul 2026
  14. Decided - Withdrawn6/2026/0819/LAWE

    Certificate of lawfulness for the retention of outbuilding/ carport in front garden and outbuilding in rear garden

    57 Briars Lane Hatfield AL10 8EX

    Received 11 May 2026
  15. Decided - GrantedN6/2014/1376/FP

    Erection of two detached dwellings following demolition of existing dwelling

    Plas-y-coed Digswell Lane Welwyn AL6 0SN

    Received 17 Jun 2014
  16. Decided - Refused6/2020/0647/HOUSE

    Erection of two storey front, first floor side and part single part two storey rear extension

    43 Stag Green Avenue Hatfield AL9 5EB

    Received 6 Mar 2020
  17. Decided - Granted6/2021/0417/FULL

    Erection of 2 no. four bedroom detached chalet bungalows with garages following the demolition of the existing property.

    12 Firway Welwyn AL6 0RD

    Received 10 Feb 2021
  18. Decided - Refused6/2022/0649/HOUSE

    Erection of rear single storey extension, insertion of rear first floor dormer and front first floor dormer with patio converted into habitable space.

    3 Harvest Mead Hatfield Hertfordshire AL10 0JD

    Received 21 Mar 2022
  19. Decided - GrantedN6/2013/1008/LB

    Demolition of single storey garage and erection of fence

    Digswell Water House Digswell Lane Welwyn AL6 0BY

    Received 17 May 2013
  20. Decided - Granted6/2020/0023/HOUSE

    Erection of a two storey rear extension

    6 St Johns Close Welwyn AL6 9RB

    Received 8 Jan 2020
  21. Decided - Split6/2018/0529/COND

    Submission of details pursuant to condition 1 (details of mechanical ventilation system) on planning permission 6/2016/2605/FULL, dated 11/04/2017

    8 Howardsgate Welwyn Garden City AL8 6BQ

    Received 22 Feb 2018
  22. Decided - Split6/2023/0171/COND

    Submission of details pursuant to condition 2 (archaeological evaluation) on planning permission 6/2022/1705/HOUSE

    The Old Vicarage Vineyards Road Northaw Potters Bar EN6 4NZ

    Received 24 Jan 2023
  23. Decided - Refused6/2016/0196/HOUSE

    Erection of single storey front and rear extensions, two storey side extension following demolition of existing garage

    2 Aldock, Welwyn Garden City, AL7 4QF

    Received 5 Feb 2016
  24. Decided - Refused6/2020/0946/HOUSE

    Erection of a detached garage

    3 Mill Green Cottages Mill Green Bush Hall Lane Hatfield AL9 5PB

    Received 27 Apr 2020

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

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How to search planning applications

Guides to planning records

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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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