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

36,279Searchable applications

333Recorded as pending

86%Approval rate · 30,229 approved or refused records

4,129Refused applications

26,100 approved · 4,129 refused · 1,916 withdrawn. Received dates in our records: 29 Apr 1948 to 20 Oct 2026. Most recent record check: 24 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 Counts reflect the last collected status; some records may be out of date.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 - Granted6/2022/2793/VAR
Variation of condition 1 (limited period permission) on planning permission 6/2018/3204/FULL
The Bothies and Walled Garden North Mymms Park North Mymms AL9 7TR
Received 8 Dec 2022
Decided - Refused6/2018/3227/HOUSE
Erection of a single storey front and side extension
25 Elmwood Welwyn Garden City AL8 6LD
Received 19 Dec 2018
Decided - GrantedC6/1987/0716/FP
Single storey side and rear extension
3 Roundwood Drive, Welwyn Garden City, AL8 7JZ
Received 1 Jan 1987
Decided - Granted6/2020/1244/FULL
Installation of a Co2 gas cooler plant, 3 x air conditioning units and a satellite dish
Tesco Express Commercial Unit New Local Centre Knebworth SG3 6JR
Received 3 Jun 2020
Decided - GrantedS6/2009/0994/AD
INSTALLATION OF TWO REPLACEMENT LOGO SIGNS
THE LISTED HANGAR, MOSQUITO WAY, HATFIELD, HERTFORDSHIRE, AL10 9AX
Received 11 May 2009
Decided - Granted6/2024/1759/HOUSE
Erection of a single storey rear extension
44 Warren Way Digswell Welwyn AL6 0DN
Received 12 Sept 2024
Decided - GrantedS6/2013/1592/FP
Erection of single storey rear extension
30 Huggins Lane, Welham Green, Hatfield, AL9 7LE
Received 24 Jul 2013
Decided - Granted6/2019/0956/FULL
Installation of 2x external air conditioning condenser units
20A Church Road Welwyn Garden City AL8 6PS
Received 18 Apr 2019
Decided - GrantedS6/2013/0459/DS
Discharge of condition 3 (Bat details Wildlife and Countyside Act and Habitat Regulations) of planning permission S6/2012/0720/CA
17-23 Church Street Hatfield AL9 5AS
Received 1 Mar 2013
Decided - Granted6/2020/2448/TPO
Fell and treat 2 x Oak trees (T4 and T5)
10 Hook Lane Northaw Potters Bar EN6 4DA
Received 23 Sept 2020
Decided - Granted6/2016/0389/EM
Planting of a 1m. high hornbeam hedge partially along the front border of the property
52 Brockswood Lane, Welwyn Garden City, AL8 7BG
Received 3 Mar 2016
Decided - Granted6/2020/0782/EM
Erection of a gazebo
111 Handside Lane Welwyn Garden City AL8 6SP
Received 26 Mar 2020
Decided - RefusedS6/2014/2353/FP
Change of use of adjoining amenity land to residential land to form vehicle hardstanding and private residential garden
2 Wood Close, Hatfield, AL10 8TY
Received 24 Oct 2014
Decided - GrantedN6/2013/0373/FP
Removal of existing extensions and erection of single storey rear extension
11 Attimore Road, WELWYN GARDEN CITY, AL8 6LH
Received 18 Feb 2013
Decided - Refused6/2021/1450/PN15
Erection of a 15m Phase 8 Monopole C/W wrapround Cabinet at base and associated ancillary works.
Hawkshead Road North Mymms Little Heath EN6 1NH
Received 10 May 2021
Decided - Granted6/2017/0665/TPO
Fell 1x copper beech tree - covered by TPO 271.
34 Blakemere Road Welwyn Garden City AL8 7PJ
Received 3 Apr 2017
Decided - Granted6/2019/1063/FULL
Installation of 2x Air Conditioning Units
Pacific House Unit K, City Park Swiftfields Welwyn Garden City AL7 1LY
Received 2 May 2019
Decided - Withdrawn6/2026/0613/EM
Erection of part single part double storey rear and side extension to dwelling with fenestration alterations following the demolition and rebuild of garage
6 Handside Green Welwyn Garden City AL8 6SQ
Received 8 Apr 2026
Decided - Granted6/2024/2156/FULL
Removal and replacement of 3no antennas, internal upgrade of existing equipment cabin, installation of 1no new GPS node and associated ancillary works thereto
Telecommunications Site WEH049 Campus West The Campus Welwyn Garden City Hertfordshire AL8 6UB
Received 8 Nov 2024
Decided - GrantedW6/2013/1166/TE
Reduce dangerous low branch on Oak tree by 25%
12 Sherrardspark Road, WELWYN GARDEN CITY, AL8 7JP
Received 7 Jun 2013
Decided - GrantedN6/2015/0873/FP
Erection of single storey side and rear extension
45 Longcroft Lane, Welwyn Garden City, AL8 6EB
Received 23 Apr 2015
Decided - Granted6/2021/1062/LB
Installation of 1 x velux conservation rooflight, repairs to front dormer windows, replacement window sills to front elevation, replace canopy to front door, replace front entrance steps and general repair to mortar on front elevation.
24 Church Street Hatfield AL9 5AW
Received 30 Mar 2021
Decided - Granted6/2021/2937/EM
Erection of garden room
52 Attimore Road Welwyn Garden City AL8 6LP
Received 12 Oct 2021
Under Consideration6/2026/1084/FULL
Change of use from general amenity land to residential to include the alteration and extension of the existing brick wall
1 Heay Fields Welwyn Garden City AL7 2EH
Received 23 Jun 2026

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

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