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

23,682Searchable applications

313Recorded as pending

86%Approval rate · 19,361 approved or refused records

2,699Refused applications

16,662 approved · 2,699 refused · 1,224 withdrawn. Received dates in our records: 5 Jan 2005 to 2 Oct 2026. Most recent record check: 14 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2023/0169/HOUSE
Erection of outbuilding in rear garden with Photovoltaic (PV) panels to roof
2A Rollswood Road Welwyn AL6 9TX
Received 24 Jan 2023
Decided - Granted6/2017/0014/HOUSE
Conversion of garage to habitable space
30 Lords Wood Welwyn Garden City AL7 2HF
Received 5 Jan 2017
Decided - Granted6/2018/1824/TPO
Fell 1 x Oak tree (T1) covered by TPO 842
52 Bridge Road Welwyn Garden City AL8 6UR
Received 11 Jul 2018
Decided - Granted6/2019/1551/LB
Extension and alterations to convert the building into a single dwelling with associated landscaping, hard surfacing and alterations to a section of the existing wall to create a new gated opening for pedestrian access
The Wood Barn The Estate Yard North Mymms Park North Mymms Hatfield AL9 7TR
Received 25 Jun 2019
Decided - Granted6/2016/2170/TPO
Thin Oak tree crown by 15% and reduce the height by upto 10ft - Conservation Area
25 Elmwood Welwyn Garden City AL8 6LD
Received 17 Oct 2016
Decided - Granted6/2018/2737/COND
Confirmation that conditions attached to application N6/2004/1334/FP have been complied with
2-16 (even), and 20-26 (even) Elderfield, Welwyn Garden City, AL7 1FN; 56-72 (even) Langstone Ley, Welwyn Garden City, AL7 1FQ and 51-79 (odd) Langstone Ley, Welwyn Garden City, AL7 1FR
Received 23 Oct 2018
Decided - Granted6/2024/1575/EM
Erection of a single storey side extension and alterations to openings, including insertion of bi-folding doors to existing rear elevation
42 Caponfield Welwyn Garden City AL7 4AP
Received 19 Aug 2024
Decided - Split6/2019/0207/COND
Submission of details pursuant to condition 2 (material samples for patio) on planning permission 6/2018/1865/HOUSE
176 Blythway Welwyn Garden City AL7 1DU
Received 31 Jan 2019
Decided - Granted6/2018/2597/EM
Erection of rear veranda
9 Brockett Close Welwyn Garden City AL8 7BN
Received 10 Oct 2018
Decided - Granted6/2021/0356/EMT
Fell 1 x Silver Birch in front garden
49 Marsden Road Welwyn Garden City AL8 6YQ
Received 4 Feb 2021
Decided - Granted6/2024/1545/PN8
Prior approval for the erection of a single storey rear infill extension measuring 6.00m in depth, 3.69m in height and 2.46m to the eaves
165 Knella Road Welwyn Garden City AL7 3NT
Received 13 Aug 2024
Decided - Granted6/2021/0763/HOUSE
Garage conversion into a habitable space with a new window in garage door opening.
19 Lawrence Hall End Welwyn Garden City AL7 4FB
Received 9 Mar 2021
Decided - Granted6/2023/1848/HOUSE
Erection of a single storey car port with attached storage/workshop
7 Turpins Chase Welwyn AL6 0QZ
Received 5 Sept 2023
Decided - Granted6/2025/2309/EM
Replacement of old shed (2m x 2.4m) with a better, and slightly bigger one (2.4m x 3m) on the same site. The height of the old shed was 2.3m and the new one will be 2.43m
53 Valley Road Welwyn Garden City AL8 7DH
Received 30 Oct 2025
Decided - Withdrawn6/2021/0447/EM
Erection of first floor rear exetension and double storey side extension following demolition of existing garage and alterations to fenestration.
136 Cole Green Lane Welwyn Garden City AL7 3JE
Received 11 Feb 2021
Decided - Granted6/2018/2955/VAR
Variation of condition 1 (approved plans and details) on planning permission 6/2016/0168/FULL
Swan Lodge Bell Lane Brookmans Park Hatfield AL9 7AY
Received 16 Nov 2018
Decided - Granted6/2026/0145/EM
Erection of a single storey rear extension, loft conversion with dormer and demolition of shed
2 Breakmead Welwyn Garden City AL7 3HG
Received 28 Jan 2026
Decided - Granted6/2025/2008/VAR
Variation of condition 2 (Approved plans) on planning permission 6/2025/1081/HOUSE
11 Kentish Lane Brookmans Park AL9 6NG
Received 18 Sept 2025
Decided - Granted6/2016/2744/PN8
Prior approval for the erection of a single storey rear extension measuring 4m. in depth, 3m. in height and 3m. to the eaves.
483 Howlands Welwyn Garden City AL7 4HP
Received 30 Dec 2016
Decided6/2025/1726/TC
Laurel group to coppice to 1.5m Ash to remove the slayed branch pointing eastwards Holly to air-gap structure by 2.5m Sycamore to air-gap structure by 2.5m Sycamore to air-gap the church by 2.5m and crown lift to 2.5m Chestnut to crown lift to 2m Sycamore to reduce lowest branch by 5m to fork Ash to crown lift to 4m and cut back any remaining branches to memorial Lonicera hedge Crab apples to be crown lifted to 2.5 and crown reduce by 25% Holly group to be trimmed back by 0.5m off access path Laurel group to coppice to 1.5m Sycamore to crown lift to 5m
St Lawrence Church Remains Of Bibbs Hall Lane Ayot St Lawrence AL6 9BU
Received 13 Aug 2025
Decided - Granted6/2019/0724/TPO
Fell 1 x Oak tree -Conservation area
36 Woodland Rise Welwyn Garden City AL8 7LF
Received 20 Mar 2019
Decided - Granted6/2017/0810/HOUSE
Erection of a single storey rear glazed conservatory extension
7 Butterwick Way Welwyn AL6 9GH
Received 20 Apr 2017
Decided - Granted6/2024/0907/HOUSE
Installation of 25 solar panels on removable a-frame
21 Rollswood Road Welwyn AL6 9TX
Received 15 May 2024
Decided - Granted6/2020/0193/FULL
Laying of hardstanding for new entrance pathway and disabled car parking space; installation of steel fencing and gates (part-retrospective)
4 Beaconsfield Road, Hatfield, AL10 8BE
Received 27 Jan 2020

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