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

40,297Searchable applications

283Recorded as pending

86%Approval rate · 33,821 approved or refused records

4,819Refused applications

29,002 approved · 4,819 refused · 2,219 withdrawn. Received dates in our records: 29 Apr 1948 to 29 Oct 2026. Most recent record check: 9 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 Counts reflect the last collected status; some records may be out of date.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 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 - Granted6/2024/1866/FULL
Redevelopment and change of use of the site from industrial to residential to provide 9 dwellings, together with associated landscaping, amenity space, parking, refuse storage and access from Welham Manor, following the demolition of the existing buildings and structures
Unit 1-3 51 Welham Manor Welham Green Hatfield AL9 7EL
Received 27 Sept 2024
Decided - GrantedC6/1988/7060/AD
Illuminated signs
Howard Court, Tewin Road, Welwyn Garden City
Received 4 Apr 1988
Decided - GrantedN6/2009/2530/FP
ERECTION OF PART SINGLE STOREY, PART TWO STOREY SIDE EXTENSION AND SINGLE STOREY REAR EXTENSION
93 OAKDALE, WELWYN GARDEN CITY, HERTFORDSHIRE, AL8 7QP
Received 10 Nov 2009
Decided - Refused6/2017/0456/ADV
Erection of three internally illuminated freestanding forecourt signs 5m in height and 1.8m in width
Land at Bessemer Road Welwyn Garden City AL7 1HU
Received 8 Mar 2017
Decided - Granted6/2018/2443/EM
1x Conifer to fell
18 Birds Close Welwyn Garden City AL7 4AR
Received 21 Sept 2018
Decided - Refused6/2020/2714/HOUSE
Erection of a two storey rear extension and raise lower section of existing pitched roof and soffit, installation of rooflights and solar panels, reposition garden gate and replace the existing oil tank with an air source heat pump following the removal of the rear dormer window and demolition of the existing conservatory
11A Whitehill Cottages Whitehill Welwyn AL6 9AE
Received 19 Oct 2020
Decided - Refused6/2018/0263/HOUSE
Conversion of a bungalow to a two storey dwelling to include alterations & extensions
14 Willow Walk Welwyn AL6 9SQ
Received 24 Jan 2018
Decided - GrantedN6/2014/2342/HH
Prior approval for a rear conservatory
8 New Road Woolmer Green Knebworth SG3 6JX
Received 23 Oct 2014
Decided - GrantedW6/2004/0097/EM
ERECTION OF GROUND FLOOR SIDE EXTENSION
279 Knightsfield, Welwyn Garden City, AL8 7RA
Received 22 Jan 2004
Decided6/2021/1495/TC
Sycamore (T1) - remove Flowering cherry (T2) - cut 4 branches (2 cut back 100%, and 2 by approx. 20% and 50% respectively)
Essendon Lodge School Lane Essendon Hatfield AL9 6HD
Received 11 May 2021
Decided - Split6/2019/2879/COND
Submission of details pursuant to condition 1 (sample of materials) 2 (biodiversity enhancement) 3 (soft landscaping plan) 4 (landscaping season) 5 (hard boundary treatments) 7 (obscure glazing) and 8 (extensions within class A) on planning permission 6/2019/1441/FULL
15 Newgate Street Village, Hertford, SG13 8RA
Received 15 Nov 2019
Decided - Granted6/2018/3070/HOUSE
Erection of pitched roof porch to replace timber framed porch
15 Pitsfield Welwyn Garden City AL8 7SJ
Received 3 Dec 2018
Decided - GrantedS6/2014/1924/TP
Branch cutting of trees covered by TPO3 W4 to create 1m clearance around BT line and relevant equipment
Woodland behind Essendon Lodge, School Lane, Essendon, Hatfield, AL9 6HD
Received 29 Aug 2014
Decided - Granted6/2018/2537/LAWP
Certificate of lawfulness for installation of front window, enlargement of canopy over front porch, to lower the kitchen window and cill to allow better vision, installation of roof lights and replacement of rear window with French doors
17 Pentley Park Welwyn Garden City AL8 7RT
Received 12 Oct 2018
Decided6/2018/2509/TPO
Fell 2 x Silver Birch trees (A & D), 1 x fruit tree (B) and 1 x Apple tree (C) to replace with eg amelanchier or spindle (euonymus) tree and reduce crown of 1 x Silver Birch tree (E) covered by conservation area
23 Roundwood Drive Welwyn Garden City AL8 7JZ
Received 1 Oct 2018
Decided6/2019/1207/TC
Reduce 6 x Yew trees by 50% Fell 2 x Yew trees
16 Fore Street Hatfield AL9 5AH
Received 17 May 2019
Decided - GrantedN6/2004/1279/CD
1.8 METRE HIGH BOUNDARY FENCING & ENTRANCE GATES & VEHICULAR CROSSOVER
St Michaels House Holwell Road Welwyn Garden City Hertfordshire AL7 3SF
Received 16 Jul 2004
Decided - WithdrawnN6/2007/1422/FP
FORMATION OF VEHICLE CROSSOVER
131 BLYTHWAY, WELWYN GARDEN CITY, HERTFORDSHIRE, AL7 1DN
Received 25 Sept 2007
Appeal Decided - AllowedS6/2007/0592/FP
ERECTION OF SUMMERHOUSE AND INSTALLATION OF OUTDOOR SWIMMING POOL.
TENNIS COURT HOUSE, BEDWELL PARK, ESSENDON, HATFIELD, HERTFORDSHIRE
Received 11 Apr 2007
Decided - RefusedW6/2007/1974/EM
ERECTION OF TWO STOREY SIDE EXTENSION, SINGLE STOREY REAR EXTENSION AND LOFT CONVERSION, INCORPORATING DORMER WINDOWS TO FRONT AND REAR ROOF ELEVATIONS AND BOUNDARY WALL AND GATES
41 Sherrardspark Road, Welwyn Garden City, AL8 7LD
Received 27 Dec 2007
Decided - Granted6/2021/2718/LAWE
Certificate of lawfulness for the existing HMO dwelling
61 Deerswood Avenue Hatfield AL10 8RZ
Received 20 Sept 2021
Decided - GrantedN6/2009/0205/DS
DISCHARGE OF CONDITION 3 (MATERIAL SAMPLES) OF PLANNING APPLICATION N6/2008/137/FP
6 The Valley Green, Welwyn Garden City, AL8 7DQ
Received 30 Jan 2009
Decided - Granted6/2018/1913/COND
Submission of details pursuant to condition 5 (material samples) on planning permission 6/2018/0872/EM
16 Hillside Welwyn Garden City AL7 4PZ
Received 19 Jul 2018
Decided - Withdrawn6/2019/1121/OUTLINE
Outline planning permission for the erection of 10 dwellings following demolition of existing pair of semi-detached dwellings and associates garages with all matters except access, layout and scale reserved
75 Oaklands Avenue Brookmans Park Hatfield AL9 7UH
Received 9 May 2019

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

Get emailed about new planning applications in Welwyn Hatfield

Area alerts send a daily or weekly email with new applications and decisions near a postcode, filtered by project type. £29 a month, up to 3 areas. Records are limited to the councils we collect.

Set up an area alert

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