Planning applications in Welwyn Hatfield

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Extensions & alterations
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Showing 50 of 501 applications
6/2025/1887/FULL 6 May 2026 Pending

51 Roe Green Close Hatfield AL10 9PF

Erection of a two storey rear and side extension

Welwyn Hatfield 6 May 2026
6/2026/0531/EM 6 May 2026 Pending

28 Beehive Lane Welwyn Garden City AL7 4BQ

Replacement of aluminium windows to energy efficient UPVC windows

Welwyn Hatfield 6 May 2026
6/2026/0579/EM 6 May 2026 Pending

35 Sandpit Road Welwyn Garden City AL7 3TW

Proposed loft conversion

Welwyn Hatfield 6 May 2026
6/2026/0590/HOUSE 6 May 2026 Pending

7 Barfolds Welham Green Hatfield AL9 7NG

Erection of two storey side extension

Welwyn Hatfield 6 May 2026
6/2026/0613/EM 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0639/HOUSE 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0393/HOUSE 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0466/HOUSE 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0584/HOUSE 6 May 2026 Pending

35 Sandpit Road Welwyn Garden City AL7 3TW

Loft conversion with rear dormer

Welwyn Hatfield 6 May 2026
6/2026/0600/EM 6 May 2026 Pending

7 Moorend Welwyn Garden City AL7 4QL

Installation of additional window

Welwyn Hatfield 6 May 2026
6/2026/0632/PN8 6 May 2026 Pending

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

Welwyn Hatfield 6 May 2026
6/2026/0322/FULL 6 May 2026 Pending

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

Welwyn Hatfield 6 May 2026
6/2026/0588/HOUSE 6 May 2026 Pending

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

Welwyn Hatfield 6 May 2026
6/2026/0595/HOUSE 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0597/HOUSE 6 May 2026 Pending

125 Knella Road Welwyn Garden City AL7 3NA

Erection of a single storey side extension

Welwyn Hatfield 6 May 2026
6/2026/0346/HOUSE 6 May 2026 Pending

7 Welwyn Hall Gardens Welwyn AL6 9LF

Erection of a detached outbuilding in the rear garden following the demolition of the existing outbuilding

Welwyn Hatfield 6 May 2026
6/2026/0564/EM 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0457/HOUSE 6 May 2026 Pending

187 Blythway Welwyn Garden City AL7 1DS

Erection of home office/gym following the demolition of existing shed outbuildings

Welwyn Hatfield 6 May 2026
6/2026/0583/LAWP 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0572/HOUSE 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0575/EM 6 May 2026 Pending

19 Handside Lane Welwyn Garden City AL8 6SE

Enlargement of existing driveway and alterations to frontage

Welwyn Hatfield 6 May 2026
6/2026/0562/HOUSE 6 May 2026 Pending

47 Bramble Road Hatfield AL10 9RZ

Conversion of garage with raising of roof

Welwyn Hatfield 6 May 2026
6/2026/0563/LAWP 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0566/HOUSE 6 May 2026 Pending

18 Northaw Road East Cuffley Potters Bar EN6 4LL

Installation of rear dormer and pitched roof to facilitate loft conversion

Welwyn Hatfield 6 May 2026
6/2026/0517/EM 6 May 2026 Pending

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

Welwyn Hatfield 6 May 2026
6/2026/0558/HOUSE 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0559/HOUSE 6 May 2026 Pending

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.

Welwyn Hatfield 6 May 2026
6/2026/0560/HOUSE 6 May 2026 Pending

3 Heathlands Welwyn AL6 0UU

Erection of rear and side single-storey extension with conversion of garage to habitable accommodation

Welwyn Hatfield 6 May 2026
6/2026/0561/HOUSE 6 May 2026 Pending

32 Yew Grove Welwyn Garden City AL7 2HY

Erection of a single storey rear extension, following demolition of existing extension

Welwyn Hatfield 6 May 2026
6/2026/0384/EM 6 May 2026 Pending

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

Welwyn Hatfield 6 May 2026
6/2026/0553/EM 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0538/HOUSE 6 May 2026 Pending

18 Worcester Road Hatfield AL10 0DX

Erection of single storey rear extension and front lean to porch following the demolition of rear conservatory

Welwyn Hatfield 6 May 2026
6/2026/0541/EM 6 May 2026 Pending

19 Greenfield Welwyn Garden City AL8 7HW

Installing a garden room (incorporating a shed)

Welwyn Hatfield 6 May 2026
6/2026/0543/HOUSE 6 May 2026 Pending

59 Wilga Road Welwyn AL6 9PT

Single storey rear extension and side extension, following demolition of existing porch

Welwyn Hatfield 6 May 2026
6/2026/0413/EM 6 May 2026 Pending

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...

Welwyn Hatfield 6 May 2026
6/2026/0506/EM 6 May 2026 Pending

7A Mill Green Road Welwyn Garden City AL7 3UU

Installation of a conservatory at rear of property

Welwyn Hatfield 6 May 2026
6/2026/0509/EM 6 May 2026 Pending

16 Guessens Road Welwyn Garden City AL8 6QR

Erection of a single storey side extension / winter garden

Welwyn Hatfield 6 May 2026
6/2026/0526/HOUSE 6 May 2026 Pending

11 Wheatbarn Welwyn Garden City AL7 2BN

Erection of a single storey rear extension following the demolition of conservatory

Welwyn Hatfield 6 May 2026
6/2026/0527/HOUSE 6 May 2026 Pending

19 Queens Avenue Welwyn Garden City AL7 4BZ

Conversion of garage with alterations to fenestration

Welwyn Hatfield 6 May 2026
6/2026/0419/FULL 6 May 2026 Pending

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

Welwyn Hatfield 6 May 2026
6/2026/0488/EM 6 May 2026 Granted

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...

Welwyn Hatfield 6 May 2026
6/2026/0515/LAWP 6 May 2026 Refused

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

Welwyn Hatfield 6 May 2026
6/2026/0519/HOUSE 6 May 2026 Pending

Foxwood Tylers Causeway Newgate Street Hertford SG13 8QN

Erection of a pool house

Welwyn Hatfield 6 May 2026
6/2026/0481/EM 6 May 2026 Pending

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

Welwyn Hatfield 6 May 2026
6/2026/0482/EM 6 May 2026 Pending

10 Graysfield Welwyn Garden City AL7 4BL

Single story rear extension with 8 solar panels

Welwyn Hatfield 6 May 2026
6/2026/0507/EM 6 May 2026 Pending

139 Oakdale Welwyn Garden City AL8 7QS

Erection of single storey rear extension

Welwyn Hatfield 6 May 2026
6/2026/0452/EM 6 May 2026 Granted

15 Brooms Close Welwyn Garden City AL8 7JA

Replacement shed 8ftx16ft

Welwyn Hatfield 6 May 2026
6/2026/0497/HOUSE 6 May 2026 Pending

7A Mill Green Road Welwyn Garden City AL7 3UU

Installation of conservatory at rear

Welwyn Hatfield 6 May 2026
6/2026/0505/HOUSE 6 May 2026 Pending

139 Oakdale Welwyn Garden City AL8 7QS

Erection of single storey rear extension

Welwyn Hatfield 6 May 2026
6/2026/0356/EM 6 May 2026 Granted

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...

Welwyn Hatfield 6 May 2026
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Data updated 10 May 2026. Source: Welwyn Hatfield planning portal.