Archive · Welwyn Hatfield · 2026
Planning applications in Welwyn Hatfield, April 2026
Welwyn Hatfield recorded 146 planning applications in April 2026, listed newest first over 3 pages. Dates are as received, or as decided where the council publishes no submission date.
Applications, April 2026
Newest first · page 1 of 3
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6/2026/0765/EIA Decided
Small Animal Hospital at the Hawkshead Campus of the Royal Veterinary College AL9 7TA
Request for a screening opinion for proposal to implement the proposals for a new Small Animal Hospital as per the Approved Hawkshead Campus Masterplan (2018): Request for an Environmental Impact Assessment (EIA) Screening Opinion under Regulations 5 and 6 of the Town and Country Planning (E nvironmental Impact Assessment) Regulations 2017 (as amended)
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6/2026/0763/TC Granted
32 Valley Road Welwyn Garden City AL8 7DN
T1 x Juniper to fell.
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6/2026/0762/EMT Granted
32 Valley Road Welwyn Garden City AL8 7DN
T1 x Juniper to fell.
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6/2026/0764/COND Granted
45 High Street Welwyn AL6 9EH
Submission of details pursuant to condition 1 (method) and 2 (structural survey and a detailed schedule of repair works) on listed building consent 6/2025/2626/LB
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6/2026/0766/MAJ Granted
45-63 Brownfields Mill Brownfields Welwyn Garden City AL7 1AN
Erection of an additional storey to the roof of the building to accommodate additional office space.
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6/2026/0760/EM Granted
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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6/2026/0757/TC Granted
163 Parkway Welwyn Garden City AL8 6JA
1 x Hawthorn to lift to around 2m above ground level.
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6/2026/0759/EMT Granted
163 Parkway Welwyn Garden City AL8 6JA
1 x Hawthorn to lift to around 2m above ground level
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6/2026/0754/TC Granted
43 Beehive Lane Welwyn Garden City AL7 4BJ
The Tree (T1) reduction is for the Cherry Tree, with 2-4m of reduction to be carried out to maintain tree health due to proximity to properties & additional light in garden. The removal requested is for an old dead stump & Cotoneaster (T2/3), which will lead to replanting in more suitable areas to allow for shed replacement
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6/2026/0756/HOUSE Granted
43 Moorlands Welwyn Garden City AL7 4PY
Proposed single storey rear extension and a garage conversion
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6/2026/0755/HOUSE Awaiting decision
38 Westland Drive Brookmans Park AL9 7UQ
Erection of single storey side and rear extension with split level roofline
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6/2026/0750/TC Granted
33 Attimore Road Welwyn Garden City AL8 6LQ
1 x Plum to fell.
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6/2026/0749/HOUSE Granted
6 Witchford Welwyn Garden City AL7 2PR
Erection of single rear extension
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6/2026/0753/EMT Granted
33 Attimore Road Welwyn Garden City AL8 6LQ
1 x Plum to fell.
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6/2026/0748/LAWP Granted
72 Cherry Way Hatfield AL10 8LD
Certificate of lawfulness for non-material Change of Use from C3 (single-family dwelling) to C2 (residential institution) to establish a children’s home accommodating 1 to 2 service users
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6/2026/0751/COND Awaiting decision
Land adjacent to Woodvale 1 Carbone Hill Northaw Potters Bar EN6 4PJ
Submission of details pursuant to Condition 1 (Construction Management Plan), condition 2 (Construction Environment Management Plan), condition 3 (Full site survey showing the datum used to calibrate the site levels), condition 4 (Arboricultural Method Statement and Tree Protection Strategy and Plan), condition 5 (Crown Roof), condition 6 (Hard and Soft Landscape), condition 7 (Samples Materials), condition 8 (EV charging point) & condition 9 (Energy-efficient construction materials and processes) on planning permission 6/2025/2534/VAR
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6/2026/0752/VAR Refused
Land adjacent to Woodvale 1 Carbone Hill Northaw Potters Bar EN6 4PJ
Variation of condition 3 (levels), 6 (hard and soft landscaping), 7 (materials), 9 (energy statement) and 16 (approved plans) on planning permission 6/2024/1554/FULL
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6/2026/0747/TC Granted
10 Marsden Close Welwyn Garden City AL8 6YE
T1 Conifer (Cupressus / Leyland species) Fell to a standing monolith at approx 1 metre T2 Cherry (Prunus species) Remove one limb (as identified within the red outline on the attached photograph) and sever ivy at the base
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6/2026/0736/TC Granted
24 Moorlands Welwyn Garden City AL7 4PP
Conifer - fell 6 trees on border of property due to excessive height to be replaced with alternative hedging. Fence also is present on boundary of property separating between 24 Moorlands and 1 The Pastures
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6/2026/0739/COND Granted
Mill Green 5 Mill Green Cottages Bush Hall Lane Hatfield AL9 5PB
Submission of details pursuant to condition number 1 (brick replacement method) and 2 (material sample tiles) on listed building consent 6/2026/0039/LB
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6/2026/0741/EMT Granted
24 Moorlands Welwyn Garden City AL7 4PP
Conifer - fell 6 trees on border of property due to excessive height, shading to garden, and stunting growth of other vegetation in the garden. To be replaced with alternative hedging that is easy to manage
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6/2026/0737/COND Granted
55 Peplins Way Brookmans Park AL9 7UR
Submission of details pursuant to Condition 1 (the Biodiversity Gain Plan) on planning permission 6/2025/2564/FULL
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6/2026/0740/FULL Withdrawn
Land to the rear of 8 Birds Close Welwyn Garden City AL7 4AR
Erection of a single storey detached dwelling with basement
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6/2026/0734/COND Granted
Land south of Welham Manor and west of Station Road, including 26 Station Road Welham Green AL9 7EL
Submission of details pursuant to Condition 3 (Contamination through Surface Water Drainage), condition 5 (Surface Water Drainage Network) on planning permission 6/2024/2418/MAJ
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6/2026/0742/EM Granted
43 Brockswood Lane Welwyn Garden City AL8 7BE
Erection of garage/garden office following the demolition of the existing garage
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6/2026/0735/LAWE Refused
1 Northaw Place Coopers Lane Northaw Potters Bar EN6 4NQ
Certificate of lawfulness for the existing use of the land as residential garden land ancillary to the dwellinghouse continuously since 2012
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6/2026/0744/EM Granted
1 Old Forge Close Welwyn AL6 0SR
Proposed removal of redundant boiler chimney at rear of property
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6/2026/0745/LB Withdrawn
14 Fore Street Hatfield AL9 5AH
Repointing of the principal front elevation. Localised repointing of approximately 2m of brickwork in the rear gable. Replacement of 20 damaged bricks to the chimney stacking reclaimed bricks to match the existing. Careful removal of failed pointing by hand Repointing using a lime-based mortar to match the original in composition. Pre-wetting of joints using a mist spray. Finishing of mortar joints flush with the the brick face.
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6/2026/0733/FULL Granted
Tylersley Farm Tylers Causeway Newgate Street Hertford SG13 8QN
Erection of two dwellings together with car parking and landscaping following the demolition of existing bungalow
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6/2026/0738/HOUSE Refused
21 Lemsford Village Lemsford Welwyn Garden City AL8 7TN
Erection of two storey side extension following the demolition of previous single storey side extension
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6/2026/0746/EMT Granted
10 Marsden Close Welwyn Garden City AL8 6YE
T1, Conifer: Fell to monolith at approximately 1m to reduce excessive shading and oversized canopy, retaining standing deadwood for biodiversity in line with BS3998:2010. T2, Cherry: Remove declining limb to mitigate failure risk and sever ivy at base to reduce wind-sail loading and allow inspection of main stem, prolonging the tree's safe useful life
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6/2026/0729/PN8 Granted
100 Crawford Road Hatfield AL10 0PE
Prior approval for the erection of a single storey rear extension, measuring 6m in depth, 3m in height and 2.90m to the eaves
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6/2026/0732/EM Granted
3 Coneydale Welwyn Garden City AL8 7RX
Installation of solar panel on rear south-facing roof
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6/2026/0725/HOUSE Granted
10 West Mead Welwyn Garden City AL7 4SA
Erection of a single storey rear extension, raising of roof to existing side extension and canopy area with polycarbonate sheeting roof
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6/2026/0726/HOUSE Granted
9 Lanercost Close Welwyn AL6 0RW
Erection of a single-storey rear extension with lantern rooflight; erection of a timber pergola on raised patio; replacement of existing windows and doors with black aluminium windows and doors; replacement dormer roofs; erection of a single-storey glazed side extension; and alterations to fenestration following the demolition of garage and erection of new timber carport. Demolition of existing conservatory
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6/2026/0727/HOUSE Refused
34 Northaw Road East Cuffley Potters Bar EN6 4LL
Erection of a single storey rear extension and front extension, part single storey, part two storey side extension, alterations to the roof including the enlargement and replacement of existing dormers, installation of additional flat roof dormers, and insertion of rooflights and solar panels; replacement of existing pebble dash with off white render and alterations to fenestration
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6/2026/0730/COND Granted
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 condition 6 (energy-efficient construction materials and processes) on planning permission 6/2025/1341/FULL
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6/2026/0731/EM Granted
11 Barleycroft Green, Welwyn Garden City, AL8 6JY
New windows and a new front door and a new ground floor french door.
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6/2026/0728/HOUSE Granted
78 Valley Road Welwyn Garden City AL8 7DP
Erection of a part single, part two storey rear extension, garage conversion and installation of rooflights
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6/2026/0718/PN8 Granted
8 Lemsford Road Hatfield AL10 0DH
Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3.07m in height and 2.46m to the eaves following the demolition of existing outbuilding
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6/2026/0723/FULL Awaiting decision
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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6/2026/0721/HOUSE Refused
4 The Chase Welwyn AL6 0QT
Reduction in height of the existing retaining boundary wall and alteration to and extending the garden boundary fencing.
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6/2026/0717/COND Granted
73 Bridge Road East Welwyn Garden City AL7 1UT
Submission of details pursuant to Condition 16 (Hard & Soft Landscape Works), condition 18 (External lighting schemes) on planning permission 6/2020/2268/MAJ allowed under appeal APP/C1950/W/21/3284525
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6/2026/0722/HOUSE Granted
43 Appletree Way Welwyn Garden City AL7 2FE
Proposed loft conversion including formation of a rear dormer and front rooflights
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6/2026/0714/COND Granted
9 Wendover Lodge Church Street Welwyn AL6 9LR
Submission of details pursuant to Condition 4 (Archaeological post investigation assessment) and 11 (Energy assessment) on planning permission 6/2024/2088/FULL
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6/2026/0716/EM Granted
15 Guessens Road Welwyn Garden City AL8 6QL
Erection of two storey rear extension, single storey side and rear extensions following demolition of existing garage, insertion of rooflights and installation of solar panels
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6/2026/0715/EIA Decided
Land at Cooper’s Green North West Hatfield AL10 9FD
Request for screening opinion in respect of a hybrid application
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6/2026/0705/HOUSE Granted
Ponsbourne Manor Topthorn House 5 The Ridings Newgate Street Village Hertford SG13 8QX
Erection of a detached outbuilding in the rear garden
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6/2026/0709/EM Granted
3 Woodland Rise Welwyn Garden City AL8 7LE
Replacement of existing broken garage door with new georgian style white wood effect steel sectional door. No changes to door opening size or elevations
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6/2026/0711/HOUSE Granted
11 Graveley Dell Welwyn Garden City AL7 2LF
Erection of single storey rear extension
Other months in 2026
- January 2026 25
- February 2026 55
- March 2026 138
- April 2026 146
- May 2026 151
- June 2026 168
- July 2026 166
- August 2026 116
- September 2026 8