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Planning Application: 6/2025/2022/HOUSE




HOUSEHOLDER APPLICATION
Under Consultation
Ms Emily Kingswell
e.kingswell@welhat.gov.uk
45 Mardley Hill Welwyn AL6 0TT
Erection of an infill side/rear extension, installation of decking to the rear and alterations to fenestration.
525130
218082

  • Welwyn East

  • Councillor Roger Trigg
  • Councillor Julie Cragg
  • Councillor Terry Mitchinson
Welwyn
100080989503
22/09/2025
22/09/2025
05/11/2025
05/11/2025
Your Plans UK
Mr Chris Tomlin
Suite A2 Stevenage SG1 3UN
45 Mardley Hill Welwyn AL6 0TT
Description Distance
Parish 0.00
Parish 0.00
Hertfordshire Ecological Network 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 (268 kb) Description: Applicationformredacted Created Date: 22/09/2025
Block Plan
File: 2174_YPUK_P002 - Block Plan.pdf (461 kb) Description: Block Plan Created Date: 22/09/2025
Elevations
File: 2174_YPUK_P004(A) - Existing Elevations.pdf (769 kb) Description: Existing Elevations Created Date: 22/09/2025
File: 2174_YPUK_P004(B) - Existing Elevations.pdf (767 kb) Description: Existing Elevations Created Date: 22/09/2025
File: 2174_YPUK_P006(A) - Proposed Elevations - P2.pdf (2505 kb) Description: Proposed Elevations Created Date: 22/09/2025
File: 2174_YPUK_P006(B) - Proposed Elevations - P2.pdf (2498 kb) Description: Proposed Elevations Created Date: 22/09/2025
Location Plan
File: 2174_YPUK_P001 - Site Location Plan.pdf (386 kb) Description: Site Location Plan Created Date: 22/09/2025
Plans
File: 2174_YPUK_P003 - Existing Plan - P2.pdf (458 kb) Description: Existing Plan Created Date: 22/09/2025
File: 2174_YPUK_P005 - Proposed Plan - P3.pdf (470 kb) Description: Proposed Plan Created Date: 22/09/2025
Consultee Response
File: 6_2025_2022_HOUSE 45 Mardley Hill Welwyn AL6 0TT_Redacted.pdf (267 kb) Description: Conditional - Hertfordshire Ecology_Redacted Created Date: 21/10/2025
File: Comments.pdf (75 kb) Description: Comment - Welwyn Parish Council Created Date: 22/10/2025
Site Notice
File: Site Notice_620252022HOUSE.pdf (113 kb) Description: Site Notice Created Date: 15/10/2025
Organisation Name Sent Reply Due Reply Received
Welwyn Parish Council Arooj Afzal 14/10/2025 04/11/2025 22/10/2025
Welwyn Hatfield Borough Council Councillor Julie Cragg 14/10/2025 04/11/2025
Welwyn Hatfield Borough Council Councillor Roger Trigg 14/10/2025 04/11/2025
Welwyn Hatfield Borough Council Councillor Terry Mitchinson 14/10/2025 04/11/2025
Hertfordshire County Council Hertfordshire Transport Programmes & Strategy 14/10/2025 04/11/2025
Hertfordshire Ecology Martin Hicks 14/10/2025 04/11/2025 20/10/2025
Address Date Sent Expiry Date Date Reconsulted Reconsult Expiry Date
8 Mardley Heights Welwyn AL6 0TX 14/10/2025 04/11/2025
9 Mardley Heights Welwyn AL6 0TX 14/10/2025 04/11/2025
10 Mardley Heights Welwyn AL6 0TX 14/10/2025 04/11/2025
43 Mardley Hill Welwyn AL6 0TT 14/10/2025 04/11/2025
47 Mardley Hill Welwyn AL6 0TT 14/10/2025 04/11/2025
1 The Drive Welwyn AL6 0TW 14/10/2025 04/11/2025
2 The Drive Welwyn AL6 0TR 14/10/2025 04/11/2025
Application Number Proposal Decision Distance
6/2025/1960/LAWP Certificate of lawfulness for conversion of the detached garage into habitable space and replacing a garage door with french doors.
6/2024/1922/TPO Oak tree to reduce by 25% back to previous cuts (TPO 641 (2017)) Granted 0
6/2022/0263/TPO T1 - Apple tree - reduce by 30% due to poor health and deadwood and decay within the crown. TPO 24 A3 T2 - Oak tree - to reduce back to previous points, 20% crown reduction. TPO 641 (2017) T4 - Growing over the drive - Previous coppice, reduce the weight of the stems to prevent potential split outs at base T3 - Large Beech tree - to reduce by 30%. TPO 641 (2017) T16 - Very close to the house in the back garden - excessive shading - growing over neighbours garden a fair amount Granted 0
6/2021/1697/TPO T1 - Sweet Chestnut repollard back to previous points gaining some control and access of light. T2 - Overall reduce and shape all round by approx 25%. T3 - T6 Are all neighbours trees. Looking to cut all trees back to boundary line T3 - Oak Tree to cut tree back to boundary line. T4 - T5 Lime Trees to cut trees back to boundary line. T6 - Pine Tree to shorten just a couple of limbs back a couple of meters. Granted 0
6/2020/2928/TPO G3 - Pine and Silver Birch - Reduce to ground level Granted
6/2020/0516/TPO Reduce 4 x Oak Trees by 20% and thin by 20% Granted 0
641 (2017) for the continued amenity of the area following a review of the landscape. 0
6/2017/2321/TPO Crown reduce multi-stem oak by upto 30% covered by TPO 641 (2017) Granted 0
6/2016/1793/TPO Within the rear garden of 45 Mardley Hill Fell small decayed oak, Reduce oak back to previous pruning points and crown lift to 4m. High pollard two oaks to leave a scaffold framework Within the rear garden of 47: Crown reduce oak by 25% by TPO 24 (1976) Granted
6/2015/2135/TPO DD Application - Removal of tree (species unknown) plus Beech tree and Birch tree covered by TPO 24 Granted
N6/2015/0690/TP Reduce oak to previous cuts by 30%, removal of deadwood and thin. Reduce beech by 10% remove two lowest limbs and remove deadwood covered by TPO 24 A3 Granted 0
N6/2014/1876/TP fell pine tree (A5) covered by TPO24 (A3) Granted 0
N6/2011/1756/TP Reduce group of Oak trees in front garden by 3 metres Granted 0
N6/2010/1029/TP Crown thin by 20% , crown lift by 4 mts and crown reduction by 20% Beech tree covered by TPO 24 Area 3 Part Approved / Part Refused 0
N6/2009/1163/TP CROWN THINNING AND REDUCTION BY 20% AND LIFTING BY 4 METRES FOR 3 OAK TREES COVERED BY TPO 24 AREA 3 Granted 0
N6/2008/0828/TP CROWN RAISE TO 4m AND CROWN REDUCTION BY 20% TO OAK TREES (T3) COVERED BY TPO 24 Granted 0
N6/2002/1663/FP DETACHED GARAGE Granted 0
N6/2000/0983/TP THIN CROWN OF BEECH TREE BY 15% AND THIN CROWN OF OAK TREE BY 20%, COVERED BY TPO 24, AREA 3 Granted 0
N6/1999/0303/FP Replacement of existing roof light with two front dormer windows Refused 0
N6/1998/0986/FP Proposed loft conversion, incorporating provision of three dormer windows and replacement of existing flat roof with pitched roof Granted 0
N6/1989/0111/FP Two new dormers to front elevation after removal of rooflight Refused 0
N6/1988/0629/FP Erection of detached double garage Granted 0
N6/1986/0522/ Two storey front and side extension Granted 0
N6/1985/0116/ Single storey rear extension Granted 0
N6/1985/0556/FP Single storey rear extension with basement Granted 0
N6/1984/0270/ 4 Foot high front boundary wall Granted 0
N6/1983/0306/ Porch and garage extension Granted 0
N6/1980/0830/ Rear extension to provide a family room, play room and store Granted 0
N6/1979/0348/ Single storey extension Granted 0
N6/1979/0393/ Extension to provide a playroom and extensions to kitchen, dining room and garage Granted 0
N6/1979/0735/ New playroom and extensions to kitchen dining room and garage Granted 0
24 (1976) For the continued amenity of the land. 0
N6/1975/0063/ Extension at floor level for bedrooms Granted 0

There are no NMAs associated with this application