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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
38,221Searchable applications
335Recorded as pending
86%Approval rate · 31,919 approved or refused records
4,548Refused applications

27,371 approved · 4,548 refused · 2,075 withdrawn. Received dates in our records: 29 Apr 1948 to 20 Oct 2026. Most recent record check: 26 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 Counts reflect the last collected status; some records may be out of date.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 - GrantedS6/2013/2511/FP

    Conversion of garage into habitable accommodation

    5 Flamingo Close Hatfield AL10 9LU

    Received 20 Nov 2013
  2. Decided - WithdrawnS6/2007/0611/MA

    RESIDENTIAL DEVELOPMENT (164 UNITS) (RESERVED MATTERS FOLLOWING OUTLINE PERMISSION S6/1999/1064/OP)

    PHASE 4 FORMER HATFIELD AERODROME SITE, MOSQUITO WAY, HATFIELD, HERTFORDSHIRE

    Received 17 Apr 2007
  3. Decided - Granted6/2021/2143/LAWP

    Certificate of lawfulness for erection of single storey rear extension and garden outbuilding.

    12 Fern Dells Hatfield AL10 9HX

    Received 15 Jul 2021
  4. Decided - Granted6/2022/2370/TPO

    1x ash (TPO T1) & 1 x sycamore (TPO T2) to crown lift to 4m above ground level. (Amended)

    Red Lion Court Great North Road Hatfield AL9 5BW

    Received 12 Oct 2022
  5. Decided - Granted6/2021/2475/COND

    Submission of details pursuant to the discharge of Condition 4 (noise due to traffic) on planning permission 6/2019/1616/FULL

    Land behind 140 Ludwick Way Welwyn Garden City AL7 3PY

    Received 24 Aug 2021
  6. Decided - Granted6/2021/2500/EM

    Erection of a part two storey, part single storey rear extension following demolition of conservatory.

    38 Hyde Way Welwyn Garden City AL7 3AE

    Received 25 Aug 2021
  7. Decided - WithdrawnS6/2008/1690/MA

    RELOCATION OF TENNIS COURTS TO LAWN AREA AND EXTENSION OF CAR PARKING FACILITIES

    THE HANGER, MOSQUITO WAY, HATFIELD, HERTFORDSHIRE, AL10 9AX

    Received 29 Aug 2008
  8. Decided - Granted6/2025/0809/LB

    Removal of existing flat roof, raising roof and replacing with a new flat roof. Internal modification of living space

    Mill Green 5 Waterside Cottages Bush Hall Lane Hatfield AL9 5NY

    Received 29 Apr 2025
  9. Decided - Granted6/2016/0405/EM

    Removal of poplar tree

    12 Coltsfoot, Welwyn Garden City, AL7 3HZ

    Received 8 Mar 2016
  10. Decided - GrantedN6/2010/0202/FP

    ERECTION OF TWO STOREY REAR EXTENSION

    3 Brickwall Cottages Great North Road Welwyn Garden City AL8 7SR

    Received 3 Feb 2010
  11. Decided - Granted6/2018/0640/EM

    Erection of single storey rear extension and installation of 3 x rear Velux windows

    43 Springfields Welwyn Garden City AL8 6XT

    Received 7 Mar 2018
  12. Decided - Granted6/2019/2166/HOUSE

    Erection of single storey side extension and part single part two storey rear extension

    7 Maran Avenue Welwyn AL6 9HS

    Received 2 Sept 2019
  13. Decided - Granted6/2016/0330/HOUSE

    Erection of two storey front and side extension and alterations to front elevation at end of terrace dwelling house

    40 Twin Foxes Woolmer Green Knebworth SG3 6QT

    Received 26 Feb 2016
  14. Decided - Granted6/2016/1284/TPO

    Reduce height of Conifer hedge by upto 3m

    7 Heather Road, Welwyn Garden City, AL8 6XX

    Received 27 Jun 2016
  15. Decided - Granted6/2025/2129/EM

    Installation of a solar PV array on the first-floor flat roof, consisting of a standard flat roof mounting system (VanDerValk) with 12 panels arranged in a mostly rectangular form

    1 Fern Grove Welwyn Garden City AL8 7ND

    Received 6 Oct 2025
  16. Decided - Granted6/2020/0144/COND

    Submission of details pursuant to conditions 7 (Samples of the materials, including full details of window frames) 13 (Location of bin provision) 19 (External street lighting) on planning application 6/2018/3110/MAJ

    Ratcliff Tail Lifts Ltd Bessemer Road Welwyn Garden City AL7 1ET

    Received 21 Jan 2020
  17. Decided - Granted6/2020/0014/EMH

    Erection of two storey rear extension, following demolition of existing rear conservatory

    103 Boundary Lane Welwyn Garden City AL7 4EG

    Received 24 Dec 2020
  18. Decided - GrantedS6/2006/0347/FP

    ERECTION OF FIRST FLOOR FRONT AND TWO STOREY SIDE EXTENSIONS, INCLUDING JULIET BALCONY TO THE REAR

    139 Church Road Little Heath Potters Bar EN6 1EU

    Received 20 Mar 2006
  19. Decided - Withdrawn6/2020/2620/FULL

    Erection of a second floor, fenestration alterations, side access altered, erection of additional entrance canopy, section of flat roof added to main building

    Beecholme 54 Codicote Road Welwyn AL6 9UJ

    Received 9 Oct 2020
  20. Decided - GrantedW6/2013/0165/TE

    Fell Elder tree

    40 Handside Lane Welwyn Garden City AL8 6SJ

    Received 24 Jan 2013
  21. Decided - GrantedN6/2015/0148/FP

    Erection of a single storey rear extension

    4 Cob Lane Close Digswell Welwyn AL6 0DD

    Received 26 Jan 2015
  22. Decided - Granted6/2018/1475/EM

    Fell 1 x Lawson Cypress tree

    7 Attimore Close Welwyn Garden City AL8 6LN

    Received 4 Jun 2018
  23. Decided - Granted6/2019/0024/HOUSE

    Erection of a single storey rear extension

    70 Thistle Grove Welwyn Garden City AL7 4AQ

    Received 4 Jan 2019
  24. Decided - GrantedN6/2015/1497/HOUSE

    Erection of single storey rear extension

    6 Beehive Green Welwyn Garden City AL7 4BE

    Received 13 Jul 2015

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

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    Planning permission drawings: how to read plans

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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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