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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
30,425Searchable applications
303Recorded as pending
87%Approval rate · 25,307 approved or refused records
3,341Refused applications

21,966 approved · 3,341 refused · 1,618 withdrawn. Received dates in our records: 29 Apr 1948 to 13 Oct 2026. Most recent record check: 18 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 Counts reflect the last collected status; some records may be out of date.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 - GrantedS6/2015/0694/FP

    Increase the size of existing HMO properties to up to 12 bedrooms and up to 17 residents (Sui-Generis)

    The Old School House Dellsome Lane Welham Green Hatfield AL9 7NF

    Received 26 Mar 2015
  2. Decided - Granted6/2015/1905/TPO

    Weeping Willow - reduce height to 5-7m above ground level - Conservation Area.

    31 Parkside Welwyn AL6 9DQ

    Received 11 Sept 2015
  3. Decided - Granted6/2016/0761/HOUSE

    Erection of porch with new front door access, two storey side extension, single storey rear/side extensions with roof lights and detached garage following demolition of existing lean-to and attached double garage

    30 Great North Road Brookmans Park Hatfield AL9 6NF

    Received 25 Apr 2016
  4. Decided - GrantedW6/2013/1771/EM

    Erection of first floor side extension

    76 Longcroft Lane, Welwyn Garden City, AL8 6EF

    Received 16 Aug 2013
  5. Decided - Refused6/2018/0192/HOUSE

    Erection of a two storey front extension and single storey rear extension

    7 Strawmead Hatfield AL10 0JG

    Received 22 Jan 2018
  6. Decided - Granted6/2016/0882/HOUSE

    Erection of single storey rear extension

    92 Lemsford Lane, Welwyn Garden City, AL8 6YL

    Received 6 May 2016
  7. Decided - WithdrawnN6/2013/2101/FP

    Erection of part two storey and part single storey rear extension, single storey rear extension and rebuilding of existing front porch with pitched roof to replace existing flat roof

    7 Grange Hill Welwyn AL6 9RH

    Received 4 Oct 2013
  8. Decided - Granted6/2022/1034/EM

    Erection of a single storey side extension following the demolition of existing garage

    57 Pentley Park Welwyn Garden City AL8 7SF

    Received 4 May 2022
  9. Decided - Refused6/2023/2327/LAWP

    Certificate of lawfulness for the installation of solar panels to the front roof elevation of house

    4 Langstone Ley Welwyn Garden City AL7 1FQ

    Received 17 Nov 2023
  10. Decided - GrantedS6/2014/2220/FP

    Change of use from C4 (HMO) to C3 (dwellinghouses) and proposed two storey rear extension, part ground floor rear extension and front porch

    15 Cedar Road Hatfield AL10 8NZ

    Received 7 Oct 2014
  11. Decided - Granted6/2020/3286/EMT

    Reduction 40% of mature copper beach tree

    34 Blakemere Road, Welwyn Garden City, AL8 7PJ

    Received 7 Dec 2020
  12. Decided - GrantedW6/2013/2179/TE

    Prune Willow tree crown by 50%

    166 Parkway, WELWYN GARDEN CITY, AL8 6HZ

    Received 1 Oct 2013
  13. Decided - Granted6/2026/0716/EM

    Erection of two storey rear extension, single storey side and rear extensions following demolition of existing garage, insertion of rooflights and installation of solar panels

    15 Guessens Road Welwyn Garden City AL8 6QL

    Received 22 Apr 2026
  14. Decided - Refused6/2018/1392/PN8

    Prior approval for the erection of a single storey rear extension measuring 4 m in depth, 3 m in height, 3 m to the eaves

    5 Cornflower Way Hatfield AL10 9FY

    Received 21 May 2018
  15. Decided - GrantedN6/2014/2086/FP

    Erection of part two, part single storey rear extension

    24 Windsor Road Welwyn AL6 9JJ

    Received 19 Sept 2014
  16. Decided - Withdrawn6/2017/1418/COND

    Submission of details pursuant to condition 4 ii (site characterisation) on planning permission N6/2011/0359/OP dated 04/06/2013

    Queen Elizabeth II Hospital Howlands Welwyn Garden City AL7 4HQ

    Received 27 Jun 2017
  17. Decided - GrantedS6/2014/1018/FP

    Installation of new timber structure with kiln dried oak cladding frontage with aluminium doors with opaque side lights either side after removal of current timber frontage

    Fiddlebridge Industrial Centre, 1-5 Lemsford Road, Hatfield, AL10 0DE

    Received 9 May 2014
  18. Decided - Granted6/2025/0449/ADV

    Installation of 2x advertisement panels on either side of BT Street Hub Unit

    Footpath outside 46 The Common Hatfield AL10 0LU

    Received 11 Mar 2025
  19. Decided - Granted6/2026/1454/COND

    Submission of details pursuant to Condition 4 (Drainage), 7 (Lighting, line marking and flooring), 9 (Construction Method Statement) and 10 (Landscaping) on planning permission 6/2026/0205/MAJ

    Monks Walk School Knightsfield Welwyn Garden City AL8 7NL

    Received 18 Aug 2026
  20. Decided - Granted6/2023/0786/EM

    replacement of existing single storey side extension with new extension.

    49 Marley Road, Welwyn Garden City, AL7 4BT

    Received 11 Apr 2023
  21. Decided - Granted6/2016/0427/HOUSE

    Erection of first floor rear extension with loft conversion including the addition of 2 rear roof windows and 1 gable end porthole window

    9 Brockett Close, Welwyn Garden City, AL8 7BN

    Received 15 Mar 2016
  22. Decided - Granted6/2020/0171/EM

    Erection of two storey side extension and alterations to openings

    11 Harwood Hill Welwyn Garden City AL8 7AA

    Received 22 Jan 2020
  23. Decided - GrantedN6/2014/2511/FP

    Erection of a single storey front extension with pitched roof over proposed and existing

    2 Roman Way Welwyn AL6 9RJ

    Received 17 Nov 2014
  24. Decided - Refused6/2026/1436/FULL

    Erection of two 3-bed chalet bungalows (Use Class C3) following the subdivision of existing residential plot

    8 Robbery Bottom Lane Welwyn AL6 0UW

    Received 14 Aug 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

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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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