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/6/2026/0367/HOUSE
14 Brocket Road Welwyn Garden City AL8 7TY
Erection of a single storey rear and side extension
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Welwyn Hatfield/6/2026/0536/COND
Essendon Lodge School Lane Essendon Hatfield AL9 6HD
Submission of details pursuant to condition 1 (Arboricultural Impact Statement and Arboricultural Method Statement) on planning permission 6/2025/1790/HOUSE
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Welwyn Hatfield/6/2026/0554/COND
118 Ludwick Way Welwyn Garden City AL7 3PY
Submission of details pursuant to Condition 1 (Construction Management Plan) on planning permission 6/2025/2579/HOUSE
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Welwyn Hatfield/6/2026/0581/EMT
3 Old Forge Close Welwyn AL6 0SR
1 x Apple to reduce growth back to previous pruning points, approximately 1.2m in both height and width. To maintain size and current pruning maintenance cycle 2 x Norway maple to reduce gr...
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Welwyn Hatfield/6/2026/0926/HOUSE
The Willows Marshmoor Lane Welham Green Hatfield AL9 7HT
Extension of existing residential dwelling
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Welwyn Hatfield/6/2026/0262/COND
23-25 Mill Lane Welwyn AL6 9EU
Submission of details pursuant to condition number 5 (Material details) and 6 (Hard and soft landscaping) on planning permission 6/2025/1212/HOUSE
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Welwyn Hatfield/6/2026/0263/COND
23-25 Mill Lane Welwyn AL6 9EU
Submission of details pursuant to condition number 2 (Material details) on planning permission 6/2025/1211/LB
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Welwyn Hatfield/6/2026/0457/HOUSE
187 Blythway Welwyn Garden City AL7 1DS
Erection of home office/gym following the demolition of existing shed outbuildings
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Welwyn Hatfield/6/2026/0539/EMT
Quartermans Cottage Digswell Lane Welwyn AL6 0SP
50ft Ash tree to reduce the crown by 30%
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Welwyn Hatfield/6/2026/0899/EMT
10 The Commons Welwyn Garden City AL7 4RP
4x conifer reduce to 6ft height 3x self set ash, fell & poison 2x self set sycamore, fell & poison
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Welwyn Hatfield/6/2026/0900/LAWP
41 Great North Road Welwyn Garden City AL8 7TJ
Certificate of lawfulness for the erection of a hip to gable roof extension, formation of rear dormer, erection of single storey side extension and insertion of rooflight to front elevation
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Welwyn Hatfield/6/2026/0908/COND
59 New Road Digswell Welwyn AL6 0AL
Submission of details pursuant to Condition 14 (sustainable drainage scheme), 15 (verification report) and 16 (details of all units) on planning permission 6/2023/0907/FULL
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Welwyn Hatfield/6/2026/0912/EM
6 Marsden Road Welwyn Garden City AL8 6XZ
Erection of ground floor side extension and partial first floor side extension
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Welwyn Hatfield/6/2026/0924/TC
11 Coneydale Welwyn Garden City AL8 7RX
1 x Oak to reduce back to previous pruning points (approx 1.5m in height and width). Lawson Cypress (under Oak) to reduce by 3m in height. Trim sides hard while maintaining green. 1 x Eucal...
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Welwyn Hatfield/6/2026/0925/VAR
Home Farm 15 New Park Road Newgate Street Hertford SG13 8RD
Variation of condition 2 (habitat management and monitoring Plan) on planning permission 6/2025/0232/FULL
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Welwyn Hatfield/6/2025/0600/FULL
Community Building Lockleys Drive Welwyn AL6 9NT
Erection of a new Community Centre and two-storey detached dwelling with associated hard and soft landscaping following the demolition of the existing Community Centre and public toilet blo...
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Welwyn Hatfield/6/2026/0288/EM
21 Whitethorn Welwyn Garden City AL7 3EX
Installation of permeable block paved hardstanding
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Welwyn Hatfield/6/2026/0497/HOUSE
7A Mill Green Road Welwyn Garden City AL7 3UU
Installation of conservatory at rear
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Welwyn Hatfield/6/2026/0563/LAWP
16 Rosedale Welwyn Garden City AL7 1DR
Certificate of lawfulness for the erection of a part single-storey and part two-storey rear extension, replacement window to side elevation, and block up the existing kitchen ground-floor s...
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Welwyn Hatfield/6/2026/0701/PN14
6 South Mundells Welwyn Garden City AL7 1EP
Prior approval for demolition to remove the existing small industrial building and allow the site to be levelled and resurfaced in tarmac
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Welwyn Hatfield/6/2026/0765/EIA
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...
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Welwyn Hatfield/6/2026/0821/EM
32 Fordwich Road Welwyn Garden City AL8 6EY
Like for like replacement downstairs windows white PVC Georgian style sash windows. Replacement upstairs windows with white PVC Georgian style sash windows in keeping with other properties...
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Welwyn Hatfield/6/2026/0862/HOUSE
3 Brookmans Avenue Brookmans Park AL9 7QH
Erection of single storey rear extension
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Welwyn Hatfield/6/2026/0876/EMT
Great Dell Scout Hut Great Dell Welwyn Garden City AL8 7HY
Tree Safety Inspection reports lists the works to the trees
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Welwyn Hatfield/6/2026/0916/HOUSE
102 Lemsford Lane Welwyn Garden City AL8 6YP
Erection of single-storey rear and side extension with the installation of three rooflights
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Welwyn Hatfield/6/2026/0917/HOUSE
307 Knightsfield Welwyn Garden City AL8 7NJ
Erection of single storey rear extension and covered verandah area and alteration to fenestration.
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Welwyn Hatfield/6/2026/0918/LAWP
2 Corner View Welham Green Hatfield AL9 7DH
Certificate of lawfulness for the proposed erection of single storey rear extension
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Welwyn Hatfield/6/2026/0921/FULL
17 Tewin Road Welwyn Garden City AL7 1BD
Erection of a substation and ancillary infrastructure
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Welwyn Hatfield/6/2026/0225/FULL
8 Attimore Road Welwyn Garden City AL8 6LW
Change of use from lawned area to hard standing for car parking
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Welwyn Hatfield/6/2026/0566/HOUSE
18 Northaw Road East Cuffley Potters Bar EN6 4LL
Installation of rear dormer and pitched roof to facilitate loft conversion
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Welwyn Hatfield/6/2026/0693/LAWP
14 Jasmine Gardens Hatfield AL10 0BQ
Certificate of lawfulness for the proposed installation of a new window into the first floor side elevation
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Welwyn Hatfield/6/2026/0711/HOUSE
11 Graveley Dell Welwyn Garden City AL7 2LF
Erection of single storey rear extension
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Welwyn Hatfield/6/2026/0715/EIA
Land at Cooper’s Green North West Hatfield AL10 9FD
Request for screening opinion in respect of a hybrid application
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Welwyn Hatfield/6/2026/0731/EM
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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Welwyn Hatfield/6/2026/0766/MAJ
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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Welwyn Hatfield/6/2026/0806/HOUSE
87 Lords Wood Welwyn Garden City AL7 2HG
Erection of single storey rear/side extension & garage conversion
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Welwyn Hatfield/6/2026/0830/HOUSE
14 Holloways Lane Welham Green Hatfield AL9 7NP
Erection of single storey front, side and rear extensions
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Welwyn Hatfield/6/2026/0909/ADV
The Galleria Land Securities Comet Way Hatfield AL10 0XR
Erection of an electronic advertising display following removal of existing non-illuminated signage
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Welwyn Hatfield/6/2026/0910/FULL
The Galleria Land Securities Comet Way Hatfield AL10 0XR
Erection of an electronic advertising display following removal of existing non-illuminated signage
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Welwyn Hatfield/6/2026/0911/HOUSE
4 Sherrards Mansion Rectory Road Welwyn Garden City AL8 7AY
Erection of single storey rear extension with covered pergola area
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Welwyn Hatfield/6/2025/1887/FULL
51 Roe Green Close Hatfield AL10 9PF
Erection of a two storey rear and side extension
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Welwyn Hatfield/6/2026/0200/PIP
5 The Drive Ponsbourne Park Ponsbourne Park Hertford SG13 8QS
Residential development of 2 units
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Welwyn Hatfield/6/2026/0384/EM
16 Blakemere Road Welwyn Garden City AL8 7PJ
Replace flat roof on garage, kitchen and dining room, garden shed (7 feet by 5 feet) and downstairs windows all like for like
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Welwyn Hatfield/6/2026/0509/EM
16 Guessens Road Welwyn Garden City AL8 6QR
Erection of a single storey side extension / winter garden
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Welwyn Hatfield/6/2026/0517/EM
14 Turmore Dale Welwyn Garden City AL8 6HS
Replacement front door with composite door in a soft lilac, replacement side door, replacement aluminium windows with white pvc
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Welwyn Hatfield/6/2026/0548/ADV
46 Fretherne Road Welwyn Garden City AL8 6NU
Upgrading existing fascia, new KFC lettering, graphics to box sign, window sign and graphics to projecting sign
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Welwyn Hatfield/6/2026/0553/EM
121 Rowans Welwyn Garde City AL7 1PE
Installation of hardstanding due to OT Request, Removal of approx 2.75M of hedgerow to accommodate access, remaining hedgerow trimmed to 0.7M to allow safe access and meet HCC approval
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Welwyn Hatfield/6/2026/0555/COND
Land to the north east of King George V Playing Fields Northaw Road East Cuffley EN6 4RD
Submission of details pursuant to Condition 9 (Management and maintenance plan for the SuDS features and drainage network) on planning permission 6/2023/1352/VAR
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Welwyn Hatfield/6/2026/0561/HOUSE
32 Yew Grove Welwyn Garden City AL7 2HY
Erection of a single storey rear extension, following demolition of existing extension
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Welwyn Hatfield/6/2026/0576/PN8
31 Crawford Road Hatfield AL10 0PF
Prior approval for the erection of single storey rear extension measuring 3.65m in depth, 2.85m in height and 2.85m to the eaves
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Welwyn Hatfield/6/2026/0620/HOUSE
1 Old Leys Hatfield AL10 8LR
Erection of a two-storey side extension, associated roof alterations, and the erection of a brick boundary wall
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Welwyn Hatfield/6/2026/0737/COND
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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Welwyn Hatfield/6/2026/0788/HOUSE
40 Reynards Road Welwyn AL6 9TP
Demolition of an existing derelict outbuilding and its replacement with single-storey accommodation ancillary to the main dwelling
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Welwyn Hatfield/6/2026/0832/EM
180 Heronswood Road Welwyn Garden City AL7 3EU
Install inline rooftop solar panels front and back (14 rear, 10 front), with back garden installations of backup battery and air source heat pump unit
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Welwyn Hatfield/6/2026/0880/TPO
5 Evergreen Close Woolmer Green G3 6JN
Retrospective 5 day notice: Fell 1 dead silver birch TPO 105
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Welwyn Hatfield/6/2026/0886/EM
9 Monks Rise Welwyn Garden City AL8 7NF
New patio decking area and alterations to openings
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Welwyn Hatfield/6/2026/0893/HOUSE
Windy Ridge 40 Great North Road Welwyn AL6 0PX
Erection of two storey front extension with dormers, alteration to openings
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Welwyn Hatfield/6/2026/0894/FULL
14 Town Centre Hatfield AL10 0JZ
Change of use from Class E restaurant to class E restaurant with ancillary sui generis takeaway
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Welwyn Hatfield/6/2026/0901/EM
21 Broomhills Welwyn Garden City AL7 1RG
Erection of single storey one bedroom annexe
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Welwyn Hatfield/6/2026/0171/HOUSE
67 London Road Woolmer Green SG3 6HG
Erection of two single storey rear extensions