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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
33,505Searchable applications
313Recorded as pending
87%Approval rate · 28,051 approved or refused records
3,666Refused applications

24,385 approved · 3,666 refused · 1,746 withdrawn. Received dates in our records: 29 Apr 1948 to 14 Oct 2026. Most recent record check: 21 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2015/2471/EIA

    Scoping request for a proposed mixed use urban extension

    Land at Cole Green and land at Birchall Farm, Welwyn Garden City

    Received 11 Dec 2015
  2. Decided - Granted6/2020/0520/FULL

    Change of use of the land for Installation of concession pod

    86 Town Centre Hatfield AL10 0JP

    Received 24 Feb 2020
  3. Decided - Granted6/2021/1300/LAWP

    Certificate of lawfulness for part garage conversion to habitable accommodation, chimney stack removal and alterations to windows and doors

    35 Elmwood Welwyn Garden City AL8 6LD

    Received 22 Apr 2021
  4. Decided - Granted6/2024/0477/COND

    Submission of details pursuant to condition 1 (Roof Details) on planning permission 6/2023/1996/HOUSE

    2 The Driveway Cuffley Potters Bar EN6 4EB

    Received 12 Mar 2024
  5. Decided - Granted6/2019/2887/HOUSE

    Erection of first floor rear extension with alterations to openings

    15 Rectory Close Essendon Hatfield AL9 6HG

    Received 18 Nov 2019
  6. Decided - Granted6/2019/1790/LAWP

    Certificate of lawfulness for the insertion of a window to the front elevation to facilitate conversion of garage to habitable space

    8 Longcroft Lane Welwyn Garden City AL8 6EA

    Received 22 Jul 2019
  7. Decided - Granted6/2017/1521/COND

    Submission of details pursuant to condition 3 (hard and soft landscaping), 4 (tree protection plan, arboricultural method statement and site monitoring schedule), 5 (refuse and recycling storage) and 7 (construction management plan) on planning permission 6/2016/1091/DC3, dated 13/10/2016

    34-54, 64-84, 94-114, 124-144 Northdown Road Hatfield AL10 9QX

    Received 13 Jul 2017
  8. Appeal Decided - Dismissed6/2019/1490/EM

    Enlargement of existing hardstanding to create permeable block paving hardstanding with alterations to boundary treatment to include second access and crossover

    1 Youngs Rise Welwyn Garden City AL8 6RT

    Received 19 Jun 2019
  9. Decided - GrantedS6/2014/2102/FP

    Erection of single storey front and rear extensions, loft conversion including the erection of one rear and two side dormers and the insertion of 7 sky lights

    2 Sutherland Avenue, Cuffley, Potters Bar, EN6 4EQ

    Received 22 Sept 2014
  10. Decided - Granted6/2024/0964/EM

    Insertion of rooflight into existing rear extension roof, alterations to openings to rear elevation

    59 Little Thistle Welwyn Garden City AL7 4AE

    Received 23 May 2024
  11. Decided - GrantedS6/2013/1550/TP

    To reduce overhanging branches back by up to 3 metres, on oak covered by TPO3 W4.

    18 High Road, Essendon, Hatfield, AL9 6HW

    Received 16 Jul 2013
  12. Decided - Granted6/2019/0497/COND

    Submission of details pursuant to condition 2 (Landscaping) on planning permission 6/2017/2346/MAJ

    10 Hawkshead Lane North Mymms Hatfield AL9 7TB

    Received 5 Mar 2019
  13. Decided - Refused6/2016/0929/EM

    Conversion of existing garage and existing loft, to include insertion of front and rear dormers

    30 Sherrardspark Road, Welwyn Garden City, AL8 7JS

    Received 11 May 2016
  14. Decided6/2017/2926/TPO

    Reduce 1 x Hornbeam tree by up to 8ft - Conservation area

    3 Ashley Close Welwyn Garden City AL8 7LH

    Received 18 Dec 2017
  15. Decided - GrantedW6/2009/1859/EM

    REPLACE EXISTING DRIVE WITH GRAVEL AND BRICK EDGES AND THE FORMATION OF ADDITIONAL HARD SURFACING AND THE ERECTION OF A GATE

    12 SHERRARDSPARK ROAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7JP

    Received 26 Aug 2009
  16. Decided6/2018/0535/TPO

    Fell 1 x Whitebeam tree (T1) and 1 x Plum tree (TG1) - Conservation Area

    24 Vine Close Welwyn Garden City AL8 7PS

    Received 22 Feb 2018
  17. Decided - Granted6/2015/1976/EM

    Replacement of windows

    155 Heronswood Road, Welwyn Garden City, AL7 3EL

    Received 3 Sept 2015
  18. Decided - Granted6/2018/3180/TPO

    Fell 1 x Oak tree (T2) to ground level and treat stump - Covered by TPO 505

    1 Newgate Street Village Hertford SG13 8RA

    Received 13 Dec 2018
  19. Decided - Granted6/2022/0656/EM

    Erection of shed in rear garden

    20 Mandeville Rise Welwyn Garden City AL8 7JU

    Received 21 Mar 2022
  20. Decided - Granted6/2022/1454/HOUSE

    Erection of a single storey side and rear extension with the insertion of a rooflight and the insertion of doors to the existing garage following the demolition of the existing conservatory and structure behind the garage

    14 Barleycroft Green Welwyn Garden City AL8 6JY

    Received 22 Jun 2022
  21. Decided - Granted6/2019/1053/FULL

    Erection of 1 x new residential dwelling with integrated garage and associated landscaping following demolition of the existing double garage

    27 New Road Digswell Welwyn AL6 0AQ

    Received 1 May 2019
  22. Decided - Granted6/2023/0226/EMT

    Dismantle 1x Magnolia in sections to ground level Dismantle 2x Lawson Cypress in sections to ground level Dismantle 1x Lawson Cypress (including Rose) in sections to ground level and grind out stump to 200mm below ground level

    27 High Oaks Road, Welwyn Garden City, AL8 7BJ

    Received 30 Jan 2023
  23. Decided - Refused6/2026/0534/HOUSE

    Retention of single storey rear extension and garage conversion to study/office

    16 Chipmunk Chase Hatfield AL10 9GH

    Received 24 Mar 2026
  24. Decided - Granted6/2023/0216/LB

    Upgrading the thermal properties in the timber framed external walls at first floor level of the cottage

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

    Received 30 Jan 2023

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

All planning guides

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    Planning application documents: what to read first

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  • 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.

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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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