Planning authority · 2026
Welwyn Hatfield planning applications 2026
1,244 public planning records from 2026 in the production OGL dataset, newest first, linked to council source pages.
Applications
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Welwyn Hatfield/6/2026/1207/FULL
Lower Woodside Farm Lower Woodside Woodside Lane Hatfield AL9 6DH
Erection of two new general purpose agricultural buildings within existing farmyard
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Welwyn Hatfield/6/2026/1223/HOUSE
100 Tolmers Road Cuffley Potters Bar EN6 4JJ
Front boundary alterations including new vehicular access gates and minor soft landscaping alterations
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Welwyn Hatfield/6/2026/1165/TPO
The Oaks 2 Highfields Cuffley Potters Bar EN6 4EL
Reduce 1 x Hornbeam by 1-2m (T2) Reduce 6 x Oak by 1-2m (T3, T4, T5, T6, T7, T8) Crown reduction 2 x Oak to 12m above ground level (T1, T9) Covered by TPO 932 (2018)
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Welwyn Hatfield/6/2026/1262/COND
26 Station Road Welham Green Hatfield AL9 7PG
Submission of details pursuant to Condition 21 (Biodiversity Enhancement Plan) on planning permission 6/2024/2418/MAJ
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Welwyn Hatfield/6/2026/0885/EM
166 Thistle Grove Welwyn Garden City AL7 4AQ
Installation of solar panels
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Welwyn Hatfield/6/2026/1220/TC
183 Howlands Welwyn Garden City AL7 4RL
T1 & T2 – Field Maples reduce the crowns by approximately 3m in height and 1.5m radially to provide a balanced crown and reduce overhang above the public footpath. Remove the failed stem an...
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Welwyn Hatfield/6/2026/1217/PN8
48 Great Ganett Welwyn Garden City AL7 3DE
Prior approval for a single storey rear extension measuring 4m in depth, 3m to the eaves and the maximum height of 3m
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Welwyn Hatfield/6/2026/1233/EMT
62 Holwell Road Welwyn Garden City AL7 3RN
1 x Ash to reduce by 3m height and 2m width Reduce canopy to maintain a suitable size for location as tree affects four other gardens
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Welwyn Hatfield/6/2026/1236/EMT
30 Coneydale Welwyn Garden City AL8 7RZ
Reduction by 40% of Oak tree (T5) Reduction of the Holly hedge (T8) to 8 feet high
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Welwyn Hatfield/6/2026/1000/EM
67 Howicks Green Welwyn Garden City AL7 4RJ
Erection of single storey rear & front extension
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Welwyn Hatfield/6/2026/1091/HOUSE
12 Melbourne Court Welwyn Garden City AL8 6LL
Erection of a detached outbuilding for use as a habitable residential annex ancillary to the main dwellinghouse
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Welwyn Hatfield/6/2026/1171/EM
5A Honeycroft Welwyn Garden City AL8 6HR
Erection of a single storey rear extension, alterations to opening on side elevation and garden room with covered area following demolition of conservatory
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Welwyn Hatfield/6/2026/1193/TPO
10 Gresley Court Little Heath Potters Bar EN6 1LF
T1 Ash 12m - Decay throughout crown, recently shed large limb, pollard to 6m to reduce risk of future snap outs G1 Mixed species (up to 16m): Reduce back Yew and Lime by up to 3m to boundar...
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Welwyn Hatfield/6/2026/1199/LB
6 Hall Grove Welwyn Garden City AL7 4PN
Increase to door height
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Welwyn Hatfield/6/2026/1200/HOUSE
98 Harmer Green Lane Digswell Welwyn AL6 0ES
Formation of front boundary gate with brick piers and erection of rear extension, rear orangery, side porch canopy, replacement front porch, alterations to the fenestration including replac...
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Welwyn Hatfield/6/2026/1205/TPO
12 Mardley Hill Welwyn AL6 0TN
TPO 24 T2 - 1 x Oak to remove in sections to ground level. Tree is suppressed by neighbouring tree leaving a high canopy, blocking lights to neighbouring gardens as part of a larger group *...
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Welwyn Hatfield/6/2026/1211/EMT
70 Valley Road Welwyn Garden City AL8 7DP
1x Ash to reduce canopy by 2.5m height & width to maintain suitable size for location as tree is now encroaching over neighbouring boundary dropping debris and bird poo on the patio + seati...
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Welwyn Hatfield/6/2026/1219/LAWP
57 Briars Lane Hatfield AL10 8EX
Certificate of lawfulness for a proposed loft conversion with the installation of a rear dormer and four rooflights in the front elevation
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Welwyn Hatfield/6/2026/1229/TPO
2 Bracken Lane Welwyn AL6 0RB
Remove 1 x Oak in sections to near ground level covered by TPO 753 (2018)
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Welwyn Hatfield/6/2026/1230/TC
30 Coneydale Welwyn Garden City AL8 7RZ
Tree and Hedge maintenance and remedial works 1. Reduction by 40% of oak tree (T5 on attached plan) . A trunk of this tree recently fell and was removed by the council. The remaining trunk...
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Welwyn Hatfield/6/2026/1053/EM
22 Ravenfield Road Welwyn Garden City AL7 3UE
Front garden alterations
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Welwyn Hatfield/6/2026/1198/HOUSE
9 Mardley Hill Welwyn AL6 0UE
Erection of single storey front, side and rear extension, raising the existing roof and formation of rear dormer. Alterations to the fenestration, including, installation of new windows and...
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Welwyn Hatfield/6/2026/1201/TC
Park Close Hatfield AL9 5AY
Reduce crowns of 2 Apple trees by approx 2m, crown thin, remove water shoots, and crown lift to achieve 2.5–3m clearance above ground level
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Welwyn Hatfield/6/2026/1206/COND
26 Station Road Welham Green Hatfield AL9 7PG
Submission of details pursuant to condition 10 (Landscaping) on planning application 6/2024/2418/MAJ
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Welwyn Hatfield/6/2026/1208/TC
70 Valley Road Welwyn Garden City AL8 7DP
Reduce 1 x Ash by 2.5m in height and width
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Welwyn Hatfield/6/2026/1209/TC
25 Rooks Hill Welwyn Garden City AL8 6EU
T1 x Cherry to reduce by approximately 2.5m in height and 1.5m in width. Lift to 4m above ground level
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Welwyn Hatfield/6/2026/1212/EMT
25 Rooks Hill Welwyn Garden City AL8 6EU
1 x Cherry to reduce by approximately 2.5m in height and 1.5m in width. Lift to 4m above ground level dominating garden and overhanging garage entranceway
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Welwyn Hatfield/6/2026/0740/FULL
8 Birds Close Welwyn Garden City AL7 4AR
Erection of a single storey detached dwelling with basement
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Welwyn Hatfield/6/2026/0952/FULL
18 Fallowfield Welwyn Garden City AL7 1EE
Retrospective application for change of use from amenity land to residential land to form part hardstanding and part garden land at the front of the property and installation of a drop kerb
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Welwyn Hatfield/6/2026/1182/TPO
18 Great North Road Welwyn AL6 0PS
T1 - Sweet Chestnut tree - Fell one dead sweet Chestnut tree to ground level
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Welwyn Hatfield/6/2026/1187/TC
85 Pentley Park Welwyn Garden City AL8 7SL
Ground works and associated root pruning/ severance of T1 (Oak) to facilitate installation of a root barrier 15m in length and 3.5m in depth.
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Welwyn Hatfield/6/2026/1188/TC
23 Warwick Avenue Cuffley Potters Bar EN6 4RS
REAR GARDEN T1 Weeping Willow (Salix Babylonica) Reduce stem with swing on it, to about 1 foot above swing frame cut out section. Pollard remaining tree. Final height = 4m and final spread...
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Welwyn Hatfield/6/2026/1190/EM
10 Walden Road Welwyn Garden City AL8 7PF
Retrospective consent for the installation of a single external condenser unit for a reversible air-to-air heat pump
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Welwyn Hatfield/6/2026/1191/COND
Long Arm Short Arm 18 Lemsford Village Lemsford Welwyn Garden City AL8 7TN
Submission of details pursuant of condition 3 (ground investigation), condition 5 (construction method statement), condition 8 (detailed section), condition 13 (electric vehicle charging),...
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Welwyn Hatfield/6/2026/0534/HOUSE
16 Chipmunk Chase Hatfield AL10 9GH
Retention of single storey rear extension and garage conversion to study/office
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Welwyn Hatfield/6/2026/0597/HOUSE
125 Knella Road Welwyn Garden City AL7 3NA
Erection of a single storey side extension
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Welwyn Hatfield/6/2026/0723/FULL
24 Market Place Hatfield AL10 0LN
Subdivision of unit from hair salon to hair salon (Class Ea) and multi cuisine takeaway & home delivery (Sui Generis)
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Welwyn Hatfield/6/2026/0820/HOUSE
17 Claves Crescent Welwyn Garden City AL7 1WN
Erection of single storey rear extension & alterations to openings
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Welwyn Hatfield/6/2026/0826/HOUSE
28 The Grove Brookmans Park AL9 7RN
Part conversion of garage to form utility room with two rooflights within the roof
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Welwyn Hatfield/6/2026/0839/EM
133 Sweet Briar Welwyn Garden City AL7 3EB
Rear garden landscaping comprising the installation of two louvered aluminium pergolas, a multi-level porcelain terrace, and integrated soft landscaping.
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Welwyn Hatfield/6/2026/0842/HOUSE
57 Briars Lane Hatfield AL10 8EX
Erection of a single storey side extension
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Welwyn Hatfield/6/2026/0852/PN24
Tesco Stores Ltd Great North Road Hatfield AL9 5JY
Prior approval for a Solar PV installation to reduce electrical consumption and therefore carbon emissions at the commercial property
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Welwyn Hatfield/6/2026/0854/EM
175 Blythway Welwyn Garden City AL7 1DS
Replace the existing front boundary hedge with a new, well-maintained evergreen hedge to improve the appearance of the property and enhance biodiversity within the street scene.
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Welwyn Hatfield/6/2026/0857/HOUSE
15 Victoria Close Welwyn Garden City AL7 4EL
Installation of air source heat pump to front (south) facing elevation of dwelling
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Welwyn Hatfield/6/2026/0915/FULL
Holwell Court Farm Holwell Court Hatfield AL9 5RL
Refurbishment of the existing residential farmhouse and the change of use of the adjoining stables from storage (use class B8) to residential (use class C3) to form a single residential uni...
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Welwyn Hatfield/6/2026/0929/FULL
Old Owen's Sports Ground Coopers Lane Potters Bar EN6 4NF
Installation of 1 no. single padel court
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Welwyn Hatfield/6/2026/1033/MAJ
Sandyhurst 1 Welwyn By Pass Road Welwyn AL6 9HT
Erection of a 66 bedroom care home for the elderly (Use Class C2) with associated access, parking, landscaping and ancillary buildings following demolition of existing dwelling and associat...
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Welwyn Hatfield/6/2026/1054/EM
155 Heronswood Road Welwyn Garden City AL7 3EL
Replacement of the existing Finlock guttering at both the front and rear of the property with a modern guttering system
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Welwyn Hatfield/6/2026/1127/EM
16 Broadfield Place Welwyn Garden City AL8 6LJ
Replacement hardstanding and new fences following removal of hedge
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Welwyn Hatfield/6/2026/1146/EM
66 Peartree Lane Welwyn Garden City AL7 3UH
Erection of a two storey side extension and single storey rear extension, three dormer windows to the front and one dormer window to the rear, roof lights and alterations to fenestration
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Welwyn Hatfield/6/2026/1164/FULL
Brocket Park Brocket Hall Marford Road Lemsford Welwyn Garden City AL8 7XG
Retention of driving range and conversion of Warren Farm Barn
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Welwyn Hatfield/6/2026/1172/EM
13 Barleycroft Road, Welwyn Garden City, AL8 6JX
Installation of air conditioning (air-to-air heat pump)
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Welwyn Hatfield/6/2026/0670/TC
23 Elmwood Welwyn Garden City AL8 6LD
Field maple to crown lift to 3m and to reduce the tree by 30%.
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Welwyn Hatfield/6/2026/0671/TPO
37 Ramblers Way Welwyn Garden City AL7 2JU
G1 5-6 Ash trees (to the rear of 37 Ramblers Way) to pollard all the trees along the fence line by 50%. (Covered by TPO 878 (2023))
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Welwyn Hatfield/6/2026/0680/HOUSE
40 Brookside Crescent Cuffley Potters Bar EN6 4QN
Erection of two-storey front, side and rear extensions and alterations to the roof, including a crown roof to the rear, following partial demolition of the existing dwelling. Installation o...
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Welwyn Hatfield/6/2026/0730/COND
24 Fulling Mill Lane Welwyn AL6 9NS
Submission of details pursuant to Condition 1 (Construction Management Plan), condition 2 (Samples of the materials), condition 3 (Hard and soft landscape), condition 4 (EV charging) and co...
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Welwyn Hatfield/6/2026/0760/EM
62 Handside Lane Welwyn Garden City AL8 6SJ
Proposed installation of a boundary fence and gate, and an external burglar alarm box
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Welwyn Hatfield/6/2026/0796/EM
45 Dawley Welwyn Garden City AL7 1EA
Proposed extension of the existing residential accommodation to provide an accessible WC and shower room. Materials, including white upvc windows, facing brickwork and a flat felt roof cove...
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Welwyn Hatfield/6/2026/0802/TPO
5 Pine Crest Welwyn AL6 0EQ
T1 Oak: 30% reduction to suitable lateral growth points. T2 & T3 Sweet chestnuts: 30% reduction to suitable lateral growth points. (Covered by TPO655)
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Welwyn Hatfield/6/2026/0827/HOUSE
14 Birch Drive Hatfield AL10 8NX
Erection of part single and part two storey rear extension, two storey side extension and a single storey front porch following demolition of the existing garage