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Planning Application: 6/2025/1960/LAWP




LAWFUL DEVELOPMENT - PROPOSED
Under Consideration
Ms Emily Kingswell
e.kingswell@welhat.gov.uk
45 Mardley Hill Welwyn AL6 0TT
Certificate of lawfulness for conversion of the detached garage into habitable space and replacing a garage door with french doors.
525130
218082

  • Welwyn East

  • Councillor Roger Trigg
  • Councillor Julie Cragg
  • Councillor Terry Mitchinson
Welwyn
100080989503
11/09/2025
16/10/2025
16/10/2025
Mr Chris Tomlin
Mr Chris Tomlin
45 Mardley Hill Welwyn Hertfordshire AL6 0TT
45 Mardley Hill Welwyn Hertfordshire AL6 0TT
Description Distance
Sand and Gravel Minerals Safeguarding Area 0.00
Parish 0.00
Parish 108.88
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 (230 kb) Description: Application form redacted Created Date: 11/09/2025
Block Plan
File: SitePlan1.pdf (399 kb) Description: Block Plan Created Date: 11/09/2025
Location Plan
File: LocationPlan.pdf (410 kb) Description: Location Plan Created Date: 11/09/2025
Plans
File: MAR45-GAR-001 Rev 01, Application No - 6 2025 1960 LAWP.pdf (322 kb) Description: Proposed and Existing Elevations Created Date: 22/09/2025
File: MAR45-GAR-002 rev00 Garage Floor Plan - Application No - 6 2025 1960 LAWP.pdf (192 kb) Description: Proposed and Existing Floor Plans Created Date: 16/10/2025
Consultee Response
File: Comments.pdf (75 kb) Description: Comment - Welwyn Parish Council Created Date: 22/10/2025
Organisation Name Sent Reply Due Reply Received
Welwyn Parish Council Arooj Afzal 16/10/2025 22/10/2025
Welwyn Parish Council Arooj Afzal 16/10/2025 22/10/2025
Welwyn Hatfield Borough Council Councillor Julie Cragg 16/10/2025
Welwyn Hatfield Borough Council Councillor Julie Cragg 16/10/2025
Welwyn Hatfield Borough Council Councillor Roger Trigg 16/10/2025
Welwyn Hatfield Borough Council Councillor Roger Trigg 16/10/2025
Welwyn Hatfield Borough Council Councillor Terry Mitchinson 16/10/2025
Welwyn Hatfield Borough Council Councillor Terry Mitchinson 16/10/2025

There are no neighbours associated with this application

Application Number Proposal Decision Distance
6/2025/2022/HOUSE Erection of an infill side/rear extension, installation of decking to the rear and alterations to fenestration.
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