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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
22,999Searchable applications
313Recorded as pending
86%Approval rate · 18,738 approved or refused records
2,634Refused applications

16,104 approved · 2,634 refused · 1,187 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 14 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2025/2401/LB

    Repair and colour change to existing brickwork

    11A High Street Welwyn AL6 9EE

    Received 17 Nov 2025
  2. Decided - Refused6/2019/1985/HOUSE

    Erection of front boundary treatment

    79 Millwards Hatfield AL10 8UR

    Received 9 Aug 2019
  3. Decided6/2018/2856/TPO

    Crown reduce of 1 x Ash tree by 30% (T1), 1 x Oak tree by 40% (T2), 1 x Oak tree by 30% (T3) and 1 x Ash tree by 30% (T4) - Conservation Area

    48 Attimore Road Welwyn Garden City AL8 6LP

    Received 6 Nov 2018
  4. Decided - Granted6/2020/2245/EMH

    Erection of a single, part two storey rear extension, following demolition of existing rear conservatory. Raising of existing single storey side extension's roof and raising of front parapet wall on the opposite side of existing property to facilitate the erection of a covered lean-to area and alterations to fenestration.

    143 Parkway Welwyn Garden City AL8 6JB

    Received 28 Aug 2020
  5. Decided - Granted6/2018/2696/EM

    Erection of single storey front side and rear extension including alterations to openings and installation of rear dormer to facilitate loft conversion following demolition of existing single storey side extension

    116 Cole Green Lane Welwyn Garden City AL7 3JD

    Received 22 Oct 2018
  6. Decided - Granted6/2019/0858/HOUSE

    Erection of porch following demolition of existing porch

    31 Oaklea Welwyn AL6 0QN

    Received 8 Apr 2019
  7. Decided - Granted6/2017/0774/HOUSE

    Erection of a two storey front extension, part single/part two storey side extension, rear dormer, 2no roof lights, alterations to roof and alterations to openings.

    13 The Gardens, Brookmans Park, Hatfield, AL9 7UL

    Received 18 Apr 2017
  8. Decided6/2020/3467/TC

    Fell 4 x Ash [A1, A3, A4, A5] and 1 x Conifer [A2]. Crown reduce 1x unknown Species [A6] by 1.5m.

    26 Pentley Park Welwyn Garden City AL8 7SB

    Received 31 Dec 2020
  9. Decided - Granted6/2021/1924/FULL

    Change the use from a vehicle hire depot (Sui Generis Use) to a warehouse for storage and distribution purposes with ancillary offices (Use Class B8) including associated parking and servicing area.

    29 Brownfields Welwyn Garden City AL7 1AN

    Received 24 Jun 2021
  10. Decided - Withdrawn6/2023/1902/LB

    Installation of 3 air conditioning units with external condensers on flat roof

    Barn Theatre Barn Close Welwyn Garden City AL8 6ST

    Received 14 Sept 2023
  11. Decided - Granted6/2019/0856/HOUSE

    Installation of rear dormer window and front rooflights to facilitate loft conversion - retrospective

    4 Leysdown Welwyn Garden City AL7 2PY

    Received 8 Apr 2019
  12. Decided - Granted6/2025/0856/COND

    Submission of details pursuant to condition number 16 (External Materials Schedule), on planning permission 6/2022/1375/MAJ

    Land at Hollybush Lane to the east of A1000 and north of Ascots Lane Creswick Welwyn Garden City

    Received 7 May 2025
  13. Decided - Granted6/2018/0817/HOUSE

    Erection of a two storey side and single storey rear extension

    22 Mount Pleasant Close Hatfield AL9 5BZ

    Received 27 Mar 2018
  14. Appeal Decided - Dismissed6/2023/1233/FULL

    Change of use from HMO to residential institutions (class C2)

    65 Tiger Moth Way Hatfield AL10 9LT

    Received 12 Jun 2023
  15. Decided - Granted6/2020/2718/HOUSE

    Erection of front dormer, replacement front porch, alterations to openings and facing materials

    48 Mymms Drive Brookmans Park Hatfield AL9 7AF

    Received 19 Oct 2020
  16. Decided - Granted6/2021/2830/HOUSE

    Create a Drive-in-Drive-out drive to replace the existing drive and hard standing area.

    20 Bluebridge Road, Brookmans Park, Hatfield AL9 7SB

    Received 1 Oct 2021
  17. Decided - Granted6/2021/1907/FULL

    Erection of 3 bedroom dwelling with off street parking and garden

    40 Bacons Drive Cuffley Potters Bar EN6 4DU

    Received 22 Jun 2021
  18. Decided - Granted6/2023/0767/LAWP

    Certificate of lawfulness for hip to gable extension of existing roof, rear dormer and two rooflights

    Rozel Great North Road Hatfield Hertfordshire AL9 6DA

    Received 6 Apr 2023
  19. Decided - Granted6/2023/2449/FULL

    Change of use of former Post Office to take away (Sui Generis)

    Handside Post Office Marsden Road Welwyn Garden City AL8 6YG

    Received 5 Dec 2023
  20. Decided - Granted6/2019/1134/EM

    Reduction of 1 x Poplar tree height by 1.5m and width by 1m

    21 Springfields Welwyn Garden City AL8 6XS

    Received 10 May 2019
  21. Decided - Split6/2025/1368/COND

    Submission of details pursuant to condition number 11 (Materials), 12 (Landscaping), 13 (Electric Vehicle Charging), 14 (Accessible and Adaptable Dwellings), 15 (Habitat Management and Maintenance Plan), 18 (Air Source Heat Pumps) & Informative 1 (Biodiversity Net Gain) on planning permission 6/2024/1866/FULL

    51 Welham Manor Welham Green HatfieldAL9 7EL

    Received 1 Jul 2025
  22. Decided6/2025/1074/TC

    1 x Crab Apple to remove in sections to ground level 1 x Damson to remove in sections to ground level - seriously declining with large amounts of dead

    97 Longcroft Lane Welwyn Garden City AL8 6EL

    Received 6 Jun 2025
  23. Decided - Granted6/2021/1936/HOUSE

    Erection of conservatory, alterations to fenestration, installation of roof lights and rear dormer (retrospective).

    Home Farm 6 Whitehill Welwyn AL6 9AF

    Received 25 Jun 2021
  24. Decided - Granted6/2026/0248/FULL

    Erection of a new building to house a Class 7 MOT testing station in connection with Burrowfields Autos

    Land at rear of 2 Woodfield Road Welwyn Garden City AL7 1JQ

    Received 12 Feb 2026

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

  • 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.

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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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    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.

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