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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
24,946Searchable applications
313Recorded as pending
86%Approval rate · 20,475 approved or refused records
2,816Refused applications

17,659 approved · 2,816 refused · 1,320 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 15 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2024/0886/HOUSE

    Installation of window to facilitate garage conversion

    36 Poppyfields Welwyn Garden City AL7 2HJ

    Received 13 May 2024
  2. Decided - Withdrawn6/2016/0633/HOUSE

    Erection of single storey detached garage

    20 Reynards Road Welwyn AL6 9TP

    Received 7 Apr 2016
  3. Decided6/2017/1856/TPO

    Fell 1 x Poplar (T2), 2 x Sycamore trees (T4 & T5) and lop 2 x Poplar trees (T1 & T3) by up to 30% - Conservation Area

    168 Parkway Welwyn Garden City AL8 6HZ

    Received 21 Aug 2017
  4. Decided - Granted6/2020/2466/HOUSE

    Erection of single storey rear extension and extension of existing patio area following demolition of existing rear conservatory and detached outbuilding.

    23 Dellcott Close Welwyn Garden City AL8 7BB

    Received 28 Sept 2020
  5. Appeal Decided - Dismissed6/2024/0594/FULL

    Change of use from former horse menage (sui generis) to outdoor swimming pool and pump house ancillary to residential dwelling house (Class C3)

    Windmill Farm Ponsbourne Park Newgate Street Hertford SG13 8QU

    Received 27 Mar 2024
  6. Decided - Granted6/2019/3133/VAR

    Variation of condition 3 (Plans) on planning permission 6/2018/1573/HOUSE

    41 Valley Road Welwyn Garden City AL8 7DH

    Received 12 Dec 2019
  7. Decided - Refused6/2022/2468/HOUSE

    Part single storey and part two storey rear extension, single storey side extension, Velux loft conversion, alterations to openings, patio area with balustrading and addition of solar panels to existing and proposed roofs.

    16 Walden Road Welwyn Garden City AL8 7PF

    Received 26 Oct 2022
  8. Decided - Granted6/2017/2012/LB

    Internal and external alterations to building and provision of associated car parking area, garden paths and porch

    Orchard House Hatfield Park Estate Hatfield AL9 5NH

    Received 8 Sept 2017
  9. Decided - Granted6/2019/2880/HOUSE

    Erection of first floor side extension, single storey front and rear extensions and enlargement of dormer window with conversion of garage to habitable space with alterations to openings

    27 Westland Drive Brookmans Park Hatfield AL9 7UG

    Received 15 Nov 2019
  10. Decided - Granted6/2024/0308/EM

    Demolition of old garden shed (6' x 4') and replacement with new shed (6' x 6') sited on same (south) side of garden but closer to rear boundary.

    31 Longcroft Lane Welwyn Garden City AL8 6EB

    Received 15 Feb 2024
  11. Decided6/2022/1007/TC

    Fell and replace six aging poplars

    135 Parkway Welwyn Garden City Hertfordshire AL8 6JB

    Received 27 Apr 2022
  12. Decided - Granted6/2015/2457/HOUSE

    Erection of replacement Conservatory, single storey kitchen extension on west side of cottage, erection of first floor dormer window on west side of cottage. Installation of rooflights on north and south sides of cottage. Alterations to/refurbishment of cottage including replacement of existing windows.

    5 Whitehill Cottages, Whitehill, Ayot St Peter, Welwyn, AL6 9AE

    Received 10 Dec 2015
  13. Decided - Granted6/2025/2394/EM

    Erection of rear conservatory and rear shed

    82 Lumbards Welwyn Garden City AL7 1PL

    Received 14 Nov 2025
  14. Decided - Withdrawn6/2022/2662/MAJ

    Change of use from agricultural (class R) to outdoor sport and recreation class F2 (C) and construction of polo facility with the installation of three pitches and creation of viewing mound facilitated by the importation of approximately 945,000 cubic tonnes of soil over a five-year period to assist in reprofiling the site

    Land at Cromer Hyde Farm Marford Road Lemsford

    Received 22 Nov 2022
  15. Decided - Refused6/2016/1573/HOUSE

    Erection of two storey and single storey rear extensions, part garage conversion, raising of roof and loft conversion including two rear dormers

    25 Roundwood Drive, Welwyn Garden City, AL8 7JZ

    Received 2 Aug 2016
  16. Under Consultation6/2026/1508/HOUSE

    Erection of single storey front and rear extension, garage conversion and erection of rear outbuilding

    17 Sylvandale Welwyn Garden City AL7 2HS

    Received 27 Aug 2026
  17. Decided - Granted6/2016/2084/EM

    Fell Leyland Cypress tree

    146 Daniells Welwyn Garden City AL7 1QW

    Received 1 Oct 2016
  18. Decided - Granted6/2022/0220/COND

    Submission of details pursuant of condition 2 (details of crown roof) on planning permission 6/2021/2390/HOUSE

    56 Mymms Drive Hatfield AL9 7AF

    Received 1 Feb 2022
  19. Decided - Granted6/2022/1793/HOUSE

    Erection of a single storey front extension

    Postern Gate Farm Newgate Street Village Hertford SG13 8QR

    Received 1 Aug 2022
  20. Decided - Granted6/2021/1610/EMH

    Erection of a wooden summer house at 5x4m

    10 Boxfield Welwyn Garden City AL7 4PT

    Received 19 May 2021
  21. Decided - Granted6/2022/1540/HOUSE

    Single storey rear extension including raised platform and steps to access the garden

    22 Kingsmead Cuffley Potters Bar Hertfordshire EN6 4AN

    Received 1 Jul 2022
  22. Decided - Granted6/2017/0500/EM

    Reduce Purple Plum tree located in rear garden by 8ft

    25 Elmwood Welwyn Garden City AL8 6LD

    Received 13 Mar 2017
  23. Decided - Refused6/2022/1136/LAWP

    Change of use from Use Class C3(a) (dwellinghouse) to Use Class C3(b) (up to six people living together as a single household and receiving care)

    64 Walker Grove Hatfield Hertfordshire AL10 9PL

    Received 17 May 2022
  24. Decided - Granted6/2021/0928/EM

    Retention of lighting in front garden

    52 Sherrardspark Road Welwyn Garden City AL8 7LB

    Received 22 Mar 2021

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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