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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28,874 approved · 4,802 refused · 2,208 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2021/0281/HOUSE

    Erection of a single storey rear extension

    81 Knightsfield Welwyn Garden City AL8 7JE

    Received 1 Feb 2021
  2. Decided - Granted6/2016/1351/HOUSE

    Conversion of outbuilding to double garage

    Ayot Lodge, Ayot Green, Ayot St Peter, Welwyn, AL6 9AB

    Received 4 Jul 2016
  3. Decided - Granted6/2025/0447/HOUSE

    Erection of a single storey rear extension including removing flat roof from garage and replacing with pitched roof

    45 School Lane Welwyn AL6 9PQ

    Received 11 Mar 2025
  4. Decided - GrantedN6/2007/1809/FP

    INSTALLATION OF WINDOWS TO REAR ELEVATION AND INSTALLATION OF MEZZANINE FLOOR (REQUIRED BY CONDITION 19 OF PLANNING PERMISSION N6/2005/353/FP)

    UNIT 6 MALLOW PARK, WATCHMEAD, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 1LT

    Received 26 Nov 2007
  5. Decided6/2018/0774/TPO

    Prune and shape 1 x Holly tree (T1) by 2m in height, reduce crown spread of 1 x Yew tree (T2) by approx 1.5-2m, pollard 1 x Sycamore (T4) to remove all sprouts from cut ends of branches and dismantle declining and decay in base and main stem from 2 x Sycamores in group TG3 - leave stump low - Conservation Area

    9 Brockett Close Welwyn Garden City AL8 7BN

    Received 21 Mar 2018
  6. Decided - Granted6/2020/2410/HOUSE

    Erection of single storey rear extension, partial conversion of garage into study, internal alterations on ground and first floor and conversion of existing loft into habitable space including 4 x rear rooflights

    37 Sherrardspark Road Welwyn Garden City AL8 7JY

    Received 21 Sept 2020
  7. Decided - Granted6/2017/1320/HOUSE

    Erection of orangery following demolition of existing conservatory

    47 Hawkshead Lane North Mymms Hatfield AL9 7TD

    Received 19 Jun 2017
  8. Decided - Granted6/2023/0701/EMT

    Fell plum tree due to size and potential risk of damage Fell Willow tree due to damage Reduce height of conifer tree by 1/3 to 1/2

    42 Attimore Road, Welwyn Garden City, AL8 6LP

    Received 28 Mar 2023
  9. Decided - Refused6/2026/1132/LAWE

    Certificate of existing lawfulness of a 5 person HMO since 6 April 2006

    19 Cunningham Avenue Hatfield AL10 9LR

    Received 30 Jun 2026
  10. Decided6/2020/1056/TC

    Reduce 1 x Box elder tree by 1.5m Reduce 1 x Lime tree

    5 Meadow Green Welwyn Garden City AL8 6SS

    Received 12 May 2020
  11. Decided - Refused6/2023/1218/HOUSE

    Erection of a single storey front and side extension

    34 Haseldine Meadows Hatfield AL10 8HB

    Received 8 Jun 2023
  12. Decided - Withdrawn6/2017/0822/LAWP

    Certificate of lawfulness for the erection of single storey rear extension following demolition of existing conservatory as well as alterations to existing entrance hall

    74 Carve Ley Welwyn Garden City AL7 3HH

    Received 20 Apr 2017
  13. Decided - Granted6/2025/0270/HOUSE

    Retrospective garage conversion

    65 Eddington Crescent Welwyn Garden City AL7 4SX

    Received 14 Feb 2025
  14. Decided - Granted6/2021/1927/TPO

    T1 - London Plane - Crown lift to 5 meters, reduce south west of crown by 3 meters to allow clearance from building. No cuts larger than 80mm diameter. T2 + T3 Lime - Crown lift to 5 meters, removal of basal growth and prune over extended branches by 2 meters to bring back into shape. No cuts larger than 80mm T4 + T5 + T6 Lime - Crown lift to 5 meters and removal of basal growth. No cuts larger than 80mm

    4A Bridgefields Welwyn Garden City AL7 1RX

    Received 24 Jun 2021
  15. Decided - Granted6/2022/1319/HOUSE

    Erection of single storey rear extension and rendering of external walls

    44 Oaklands Avenue Brookmans Park Hertfordshire AL9 7UJ

    Received 8 Jun 2022
  16. Decided6/2024/1938/TC

    Fell Maple with Armillaria. Dead bark peeling away revealing the rhizomorphs and dead limbs above the dead bark. In serious danger of falling over, and will cause a lot of costly damage to plant life in and around it as well as a beautiful shaped yew hedge

    The Manor House Ellesfield Welwyn AL6 9HB

    Received 7 Oct 2024
  17. Decided - Granted6/2017/0225/FULL

    Retention of the re-sited 2x 15m high floodlight columns and lamps measuring a further 0.5 metres and a reduction of the re-sited two columns to 12.5m with lamps measuring a further 0.5 metres

    Welwyn Rugby Football Club Hobbs Way Welwyn Garden City AL8 6HX

    Received 7 Feb 2017
  18. Decided - Refused6/2023/1100/LAWP

    Certificate of lawfulness for installation of insulation to external skin of property and render in White K Rend

    85 Garden Avenue Hatfield AL10 8LH

    Received 24 May 2023
  19. Decided - Granted6/2021/3395/LAWE

    Certificate of lawfulness for the existing 'Granny annexe' in original approval in use as an office since 1984

    27 Attimore Road Welwyn Garden City AL8 6LQ

    Received 2 Dec 2021
  20. Decided - Granted6/2023/2239/FULL

    Change of use from amenity land to private residential driveway, retention of hard standing and formation of dropped kerb

    17 Birds Close Welwyn Garden City AL7 4AR

    Received 3 Nov 2023
  21. Decided - GrantedS6/2006/0053/LU

    CERTIFICATE OF LAWFULNESS (PROPOSED) FOR A SINGLE STOREY REAR EXTENSION

    47 Chelwood Avenue Hatfield AL10 0RF

    Received 17 Jan 2006
  22. Decided - Refused6/2020/0408/COND

    Submission of details pursuant to condition 4 (archaeological written scheme of investigation) on planning permission 6/2018/2994/VAR

    Land adjacent to Porsche Garage, Hatfield Avenue, Hatfield Business Park, Hatfield, AL10 9UA

    Received 13 Feb 2020
  23. Decided6/2025/0235/TC

    Oak tree crown reduction of 3-4m

    5 Aldock Welwyn Garden City AL7 4QF

    Received 11 Feb 2025
  24. Decided - GrantedN6/2009/1777/FP

    ERECTION OF TEMPORARY FENCE

    26 Harmer Green Lane Digswell Welwyn AL6 0AT

    Received 13 Aug 2009

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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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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