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

25,078Searchable applications

313Recorded as pending

86%Approval rate · 20,598 approved or refused records

2,824Refused applications

17,774 approved · 2,824 refused · 1,327 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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 building Local plan Our Local Plan Pre-application advice Pre-application advice (planning applications)Conservation areas Schedule of properties removed from the Welwyn Conservation Area Article 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

Decided - Granted6/2026/0760/EM
Proposed installation of a boundary fence and gate, and an external burglar alarm box
62 Handside Lane Welwyn Garden City AL8 6SJ
Received 30 Apr 2026
Decided6/2022/2329/TC
Dead or dying mature Ash tree - to fell to ground level.
4 Elmwood Welwyn Garden City AL8 6LE
Received 5 Oct 2022
Decided6/2018/1135/TPO
Fell 1 x Elder tree and 1 x Hornbeam tree and reduce 1 x Hornbeam tree by approx. 3 m covered by TPO 724 (2018)
1 Perrywood Walden Road Welwyn Garden City AL8 7PZ
Received 1 May 2018
Decided - Refused6/2022/1106/FULL
Erection of 1 x detached 4-bedroom dwelling and an apartment building accommodating 6 x 2-bedroom flats, with associated car parking, refuse and recycling storage, cycle storage, access/turning heads and landscaping following the demolition of the existing pair of semi-detached dwellings
1 Longcroft Green Welwyn Garden City AL8 6EP
Received 12 May 2022
Decided - Granted6/2020/0581/EM
Installation of rear door to facilitate conversion of exterior space into habitable space
87 Pentley Park Welwyn Garden City AL8 7SL
Received 28 Feb 2020
Decided - Withdrawn6/2022/2636/COND
Submission of details pursuant of condition 1 (external materials) on planning application 6/2020/1902/FULL
15 The Drive Welwyn AL6 0TW
Received 21 Nov 2022
Decided - Granted6/2023/0218/TPO
TPO 919 - T2 45ft Oak tree to reduce by 30% and remove major deadwood - significant deadwood in the canopy - reduction to re-balance the tree and prevent from future limb failure
36 Carleton Rise Welwyn AL6 9RF
Received 30 Jan 2023
Decided - Withdrawn6/2017/0720/EM
Erection of first floor side extension
1 Longcroft Lane Welwyn Garden City AL8 6EB
Received 10 Apr 2017
Decided - Granted6/2016/2551/EM
Oak (T1) - reduce canopy approx 25% to remove branches that overhang house, Hornbeam (T2) - coppice Cherry (T3) - remove large horizontal branch, Ash (T4) - reduce canopy by 30% to reduce impact of tree and roots on house; Cherry (T5) - reduce canopy by 30%
12 Mandeville Rise Welwyn Garden City AL8 7JU
Received 30 Nov 2016
Decided - Granted6/2023/1548/EM
Replacement of front door
53 Peartree Lane Welwyn Garden City AL7 3UA
Received 25 Jul 2023
Decided - Refused6/2017/1366/EM
Installation of rear dormer to facilitate conversion of existing loft
39 Beechfield Road Welwyn Garden City AL7 3RG
Received 23 Jun 2017
Decided - Refused6/2022/2643/HOUSE
Erection of single storey side extension
20 Gorseway Hatfield AL10 9GS
Received 21 Nov 2022
Decided - Refused6/2023/2544/HOUSE
Erection of a first floor rear/side extension and single storey front extension with insertion of front and rear Juliet balconies and fenestration alterations
166 Aldykes Hatfield AL10 8EE
Received 21 Dec 2023
Decided - Refused6/2021/1165/LAWP
Certificate of lawfullness for the conversion of a garage for habitable space and replacement of garage door with window
63 Hillfield Hatfield AL10 0TY
Received 12 Apr 2021
Decided6/2019/0782/TC
Reduce 1 x Cherry Plum by 3m height & 1.5m width
51 Springfields Welwyn Garden City AL8 6XT
Received 1 Apr 2019
Decided - Granted6/2017/1853/EM
Prune back lower growth on oak tree by up to 4m to balance crown
88 Woodhall Lane Welwyn Garden City AL7 3TF
Received 21 Aug 2017
Decided - Granted6/2016/1061/HOUSE
Erection single storey front extension and conversion of garage into habitable room and wet room
7 Thrush Lane, Cuffley, Potters Bar, EN6 4JU
Received 31 May 2016
Decided - Granted6/2021/0366/HOUSE
Erection of single storey side extension
28 Brocket Road Welwyn Garden City AL8 7TY
Received 5 Feb 2021
Decided - Granted6/2017/1788/HOUSE
Erection of a single storey rear conservatory
30 Lords Wood Welwyn Garden City AL7 2HF
Received 14 Aug 2017
Decided - Granted6/2018/2188/EM
Replacement of summerhouse in the rear garden
5 Youngs Rise Welwyn Garden City AL8 6RT
Received 23 Aug 2018
Decided6/2018/2479/TPO
Various tree works as per schedule covered by conservation area
Oaklands College The Campus Welwyn Garden City AL8 6AH
Received 25 Sept 2018
Decided - Granted6/2023/2073/TPO
T1 Oak 3-4m reduction, back to previous pruning points. T6 & T7 Chestnuts pollard to 8-9m, new pollard point approx. 1-2m below current pollard point. T12 Chestnut crown lift to 3m. T15 Hornbeam reduce back to previous points, approx 3m. T16 & T17 Chestnuts reduce and shape to previous pruning points. T18 Oak 3-4m reduction back to previous pruning points. T19 & T20 Oaks 4m crown lift to clear epicormic growth from touching adjacent dwelling. All covered by TPO 799 (2018)
12 Linden House Briary Wood Lane Welwyn AL6 0TF
Received 10 Oct 2023
Decided - Granted6/2021/3025/EMT
T1 - Beech: Crown reduce by 20% (or no more than 2.5m) Dead wood removal Remove short stem growing from base separate from trunk
5 Mannicotts, Welwyn Garden City, AL8 7BW
Received 21 Oct 2021
Decided - Granted6/2016/0555/HOUSE
Change of use of amenity land and the formation of new vehicular access
Lodge Farm Harmer Green Lane Digswell Welwyn AL6 0ET
Received 29 Mar 2016

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.
UK research
Published 16 Jul 2026Updated 13 Sept 2026
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.
UK research
Published 6 Aug 2026Updated 13 Sept 2026
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.
UK research
Published 13 Aug 2026Updated 13 Sept 2026

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.

Check collection coverage