Planning applications in Welwyn Hatfield
51 Roe Green Close Hatfield AL10 9PF
Erection of a two storey rear and side extension
28 Beehive Lane Welwyn Garden City AL7 4BQ
Replacement of aluminium windows to energy efficient UPVC windows
35 Sandpit Road Welwyn Garden City AL7 3TW
Proposed loft conversion
7 Barfolds Welham Green Hatfield AL9 7NG
Erection of two storey side extension
6 Handside Green Welwyn Garden City AL8 6SQ
Erection of part single part double storey rear and side extension to dwelling with fenestration alterations following the demolition and rebuild of g...
6 Handside Green Welwyn Garden City AL8 6SQ
Erection of part single part double storey rear and side extension, fenestration alterations and erection of garage following demolition of existing g...
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, rooflig...
93 Bluebridge Road Brookmans Park AL9 7UN
Erection of single storey side extension, front porch with new access steps, changes to fenestration at rear to replace french door and widow set with...
35 Sandpit Road Welwyn Garden City AL7 3TW
Loft conversion with rear dormer
7 Moorend Welwyn Garden City AL7 4QL
Installation of additional window
29 Heathcote Avenue Hatfield AL10 0RQ
Prior approval for a single storey rear extension which will measure 4m in depth, 3m to the eaves and the maximum height of 2.69m
1 Heay Fields Welwyn Garden City AL7 2EH
Change of use from general amenity land to residential to include the alteration and extension of the existing brick wall
54 Georges Wood Road Brookmans Park AL9 7BU
Erection of a single storey rear extension, main roof raised by 1 meter in height and rear dormer with rooflights to facilitate a loft conversion
60 Westland Drive Brookmans Park AL9 7UQ
Erection of single storey rear extension, hip to gable loft conversion and insertion of rear box dormer and alterations to fenestration, following the...
125 Knella Road Welwyn Garden City AL7 3NA
Erection of a single storey side extension
7 Welwyn Hall Gardens Welwyn AL6 9LF
Erection of a detached outbuilding in the rear garden following the demolition of the existing outbuilding
16 Rosedale Welwyn Garden City AL7 1DR
Part single storey and part two storey rear extension with replacement side window on the first floor and block up the existing ground-floor side wind...
187 Blythway Welwyn Garden City AL7 1DS
Erection of home office/gym following the demolition of existing shed outbuildings
Red Lodge High Road Essendon Hatfield AL9 6HU
Certificate of Lawfulness for two single storey side extensions, replacement car port following removal of existing structures, new hardstanding and v...
23 The Ridgeway Cuffley Potters Bar EN6 4BB
Erection of a part double storey front extension - part double storey rear extension with inset balconies - 0.8m increase in ridge height and installa...
19 Handside Lane Welwyn Garden City AL8 6SE
Enlargement of existing driveway and alterations to frontage
47 Bramble Road Hatfield AL10 9RZ
Conversion of garage with raising of roof
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...
18 Northaw Road East Cuffley Potters Bar EN6 4LL
Installation of rear dormer and pitched roof to facilitate loft conversion
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
96 Birchwood Avenue Hatfield AL10 0PS
Erection of a part single-storey, part two storey side extension and a single storey rear extension, including associated internal reconfiguration, re...
78 Travellers Lane Hatfield AL10 8SF
Erection of single storey front extension, raising of garage roof and raising of boundary walls with addition of trellis.
3 Heathlands Welwyn AL6 0UU
Erection of rear and side single-storey extension with conversion of garage to habitable accommodation
32 Yew Grove Welwyn Garden City AL7 2HY
Erection of a single storey rear extension, following demolition of existing extension
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
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...
18 Worcester Road Hatfield AL10 0DX
Erection of single storey rear extension and front lean to porch following the demolition of rear conservatory
19 Greenfield Welwyn Garden City AL8 7HW
Installing a garden room (incorporating a shed)
59 Wilga Road Welwyn AL6 9PT
Single storey rear extension and side extension, following demolition of existing porch
114 Parkway Welwyn Garden City AL8 6HN
New UPVC glazing to replace the existing timber windows in a style to match the existing windows. Replacement of garage door, front door and side acce...
7A Mill Green Road Welwyn Garden City AL7 3UU
Installation of a conservatory at rear of property
16 Guessens Road Welwyn Garden City AL8 6QR
Erection of a single storey side extension / winter garden
11 Wheatbarn Welwyn Garden City AL7 2BN
Erection of a single storey rear extension following the demolition of conservatory
19 Queens Avenue Welwyn Garden City AL7 4BZ
Conversion of garage with alterations to fenestration
15 Ely Close Hatfield AL10 0DW
Retrospective change of use from a dwellinghouse (use class C3) to a 4 bedroom HMO (use class C4) and installation of a bike shed
55 Rosedale Welwyn Garden City AL7 1DP
Removal of chimney stack and making good void to match existing tiles and appearance; installation of CCTV camera at front of house and installation o...
43 Appletree Way Welwyn Garden City AL7 2FE
Certificate of lawfulness for the erection of a loft conversion including a rear dormer and rooflights to the front roof slope
Foxwood Tylers Causeway Newgate Street Hertford SG13 8QN
Erection of a pool house
159 Handside Lane Welwyn Garden City AL8 6TA
Erection of part single and part two storey rear extension, following demolition of conservatory with alterations to side & rear openings
10 Graysfield Welwyn Garden City AL7 4BL
Single story rear extension with 8 solar panels
139 Oakdale Welwyn Garden City AL8 7QS
Erection of single storey rear extension
15 Brooms Close Welwyn Garden City AL8 7JA
Replacement shed 8ftx16ft
7A Mill Green Road Welwyn Garden City AL7 3UU
Installation of conservatory at rear
139 Oakdale Welwyn Garden City AL8 7QS
Erection of single storey rear extension
6 Densley Close Welwyn Garden City AL8 7JX
Erection of part two storey, part single storey side extension and formation of new parking space & crossover, following demolition of existing single...
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Data updated 10 May 2026. Source: Welwyn Hatfield planning portal.