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Planning Application: 6/2026/0443/PN29




Class AB - New dwellinghouses on terrace buildings in commercial or mixed use - Prior Approval
Under Consultation
Ms Emma Barral
e.barral@welhat.gov.uk
17-17a Mill Lane Welwyn AL6 9EU
Change of use of offices to 3 x 2 bedroom flats
523183
216178

  • Welwyn West

  • Councillor Tony Kingsbury
  • Councillor Sunny Thusu
  • Councillor Alex Bardett
Welwyn
100081156266
11/03/2026
11/03/2026
24/04/2026
24/04/2026
Mr James Gran
Mr Bullock
4 Ennismore Close Letchworth Garden City SG6 2SU
3 Codicote Road Welwyn Herts AL6 9LY
Description Distance
Conservation Area 0.00
Listed Buildings Combined 1.43
Listed Buildings Combined 5.82
Listed Buildings Combined 39.77
Listed Buildings Combined 0.03
Listed Buildings Combined 24.35
Listed Buildings Combined 40.54
Listed Buildings Combined 14.41
Listed Buildings Combined 38.94
Listed Buildings Combined 0.00
Area of Archaeological Significance 0.00
Minerals Safeguarding Area 0.00
Parish 0.00
Flood Zone Surface Water 1000mm 0.00
Hertfordshire Ecological Network 0.00
Sand and Gravel Belt 0.00
Great Crested Newts DLL Risk Zones 0.00
Delegated

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File Description Date Uploaded
Application Form - Without Personal Information
File: ApplicationFormRedacted.pdf (254 kb) Description: Applicationformredacted Created Date: 11/03/2026
Community Infrastructure Levy - Completed form
File: CIL Form.pdf (458 kb) Description: Community Infrastructure Levy - Completed form Created Date: 11/03/2026
Block Plan
File: AT1155-01 site plan and location plan.pdf (152 kb) Description: Site Plan And Location Plan Created Date: 11/03/2026
Plans
File: AT1155-02 existing floor plans.pdf (116 kb) Description: Existing Floor Plans Created Date: 11/03/2026
File: AT1155-03 proposed floor plans RevB.pdf (142 kb) Description: Proposed Floor Plans Revb Created Date: 11/03/2026
File: AT1155-04 existing and proposed elevations RevA.pdf (127 kb) Description: Existing And Proposed Elevations Reva Created Date: 11/03/2026
Planning Statement
File: Planning Statement.pdf (678 kb) Description: Planning Statement Created Date: 11/03/2026
Consultee Response
File: Comments.pdf (75 kb) Description: Comment - Case Officer - Joint Committee of the National Amenity Societies Created Date: 25/03/2026
File: 6-26-0443-1.pdf (183 kb) Description: Comment - Historic Environment Created Date: 27/03/2026
Noise Impact Assessment
File: Noise Assessment_Redacted.pdf (2857 kb) Description: Noise Assessment Redacted Created Date: 11/03/2026
Organisation Name Sent Reply Due Reply Received
Welwyn Parish Council Arooj Afzal 25/03/2026 15/04/2026
Joint Committee of the National Amenity Societies Case Officer 25/03/2026 15/04/2026 25/03/2026
Place Services Conservation Officer 25/03/2026 15/04/2026
Welwyn Hatfield Borough Council Councillor Alex Bardett 25/03/2026 15/04/2026
Welwyn Hatfield Borough Council Councillor Sunny Thusu 25/03/2026 15/04/2026
Welwyn Hatfield Borough Council Councillor Tony Kingsbury 25/03/2026 15/04/2026
Hertfordshire County Council Historic Environment Advisor 25/03/2026 15/04/2026 27/03/2026
Hertfordshire Ecology Martin Hicks 25/03/2026 15/04/2026
WHBC - Public Health and Protection Public Health and Protection 25/03/2026 15/04/2026
Address Date Sent Expiry Date Date Reconsulted Reconsult Expiry Date
13-15 Mill Lane Welwyn AL6 9EU 25/03/2026 17/04/2026
The Old Exchange 19 Mill Lane Welwyn AL6 9EU 25/03/2026 17/04/2026
21 Mill Lane Welwyn AL6 9EU 25/03/2026 17/04/2026
The White Horse 30 Mill Lane Welwyn AL6 9ET 25/03/2026 17/04/2026
9 Mimram Walk Welwyn AL6 9EZ 25/03/2026 17/04/2026
3 Mimram Walk Welwyn AL6 9EZ 25/03/2026 17/04/2026
5 Mimram Walk Welwyn AL6 9EZ 25/03/2026 17/04/2026
7 Mimram Walk Welwyn AL6 9EZ 25/03/2026 17/04/2026
Application Number Proposal Decision Distance
6/2023/2232/PN33 Change of use from commercial, business and service (Class E) to dwellinghouses (Class C3) residential use to form three dwellings Withdrawn
6/2019/1717/HOUSE Erection of a single storey rear extension Granted 0
6/2019/1342/FULL Conversion of 2x outbuildings to 1x Dwelling and erection of a single storey rear extension (retention of number 5 outbuilding) Granted 0
6/2018/1454/PN11 Prior approval for change of use from office building B1 to dwelling houses C3 Prior Approval Required and Granted
6/2016/1611/PN11 Prior approval for the change of use from office to residential to provide 3no two bedroom units Prior Approval Refused 0
N6/2012/1072/LB Renewal of roof and removal of chimneys Refused 0
N6/2012/0283/FP Repairs and alterations to existing building to include replacement fenestration, weatherboarding to rear extension, replacement guttering and rain water goods, installation of two conservation area roof lights on rear roof slope, erection of new and alterations to existing boundary treatments to include 1.8m garden brick wall, refurbishment of existing gates to driveway and erection of oak post and rail fence along front boundary and internal alterations (as amended by detailed plans received and dated 2 April 2012) Granted 0
N6/2012/0284/LB Repairs and alterations to existing building to include replacement fenestration, weatherboarding to rear extension, replacement guttering and rain water goods, installation of two conservation area roof lights on rear roof slope, erection of new and alterations to existing boundary treatments to include 1.8m garden brick wall, refurbishment of existing gates to driveway and erection of oak post and rail fence along front boundary and internal alterations (as amended by detailed plans received and dated 2 April 2012) Granted 0
N6/2011/2426/FP Retention of extended and altered outbuilding for use for ancillary purposes in association with residential use Prior Approval Not Required 0
N6/2009/2655/FP CHANGE OF USE FROM OFFICE ACCOMMODATION (B1) TO 3 TWO BEDROOM FLATS (C3) Granted
N6/2007/1829/FP ERECTION OF EXTENSION TO EXISTING OUTBUILDING AND TIMBER SHED Granted 0
N6/1996/0740/FP Change of use of part of ground floor from A1 (Retail) to B1 (Office) Granted 0
N6/1991/0655/FP Change of use of office accomodation on 2nd floor to one bedroomed flat and creation of additional two bedroomed dwelling Granted 0
N6/1991/0656/CA Demolition of garages and outbuildings Granted 0
N6/1991/0184/LB Two storey rear extension and rebuild garage and wall Granted 0
N6/1991/0185/FP Two storey rear extension and rebuild garage and wall Granted 0
N6/1990/0399/FP Installation of solar panels to roof Granted 0
N6/1989/0960/LB Erection of railings to frontage Granted 0
N6/1989/0621/LB Two storey rear extension Granted 0
N6/1989/0595/FP Two storey rear extension and detached garage Granted 0
N6/1987/0217/FP Single storey rear extension (Application received March, 1987) Granted 0
N6/1987/0218/LB Demolition of existing lean to and erection of single storey rear extension Granted 0
N6/1984/0115/ Use of premises as offices Granted 0
N6/1978/0449/ Single storey side extension Granted 0
N6/1978/0644/LB Alterations to provide a bathroom Granted 0

There are no NMAs associated with this application