Planning applications in Welwyn Hatfield, August 2026

Land adjacent to Cromer House Cromer Hyde Lemsford Welwyn Garden City AL8 7XD

Proposed agricultural storage building

21 Turmore Dale Welwyn Garden City AL8 6HT

Replacement doubleglazed doors and windows

48 Great Ganett Welwyn Garden City AL7 3DE

Erection of single storey rear extension

45 Sherrardspark Road, Welwyn Garden City, AL8 7LD

Remove 1 x Yew to ground level

Folly Lodge And Arch Swanley Bar Lane Little Heath Potters Bar EN6 1NN

Erection of an outbuilding to provide a home gym and office

17 Sylvandale Welwyn Garden City AL7 2HS

Erection of single storey front and rear extension, garage conversion and erection of rear outbuilding

80 Travellers Lane Hatfield AL10 8SF

Erection of a part single, part two storey rear extension, part first floor, part two storey side extension, single storey front extension and alterations to openings to facilitate the subdivision of the existing dwelling to create 1 No. three-bedroom dwelling and 1 No. two-bedroom dwelling

10 Scholars Mews Welwyn Garden City AL8 7JQ

1 x Crab Apple to reduce by approx 1.2m height and width

6A Wendover Drive Welwyn AL6 9LT

T1 1 x Beech to remove in sections to ground level - Tree is almost dead and in poor condition T2 1 x Beech to reduce to clear property by 1.5m - Branches rubbing on property

Gosmore Brocket Road Welwyn Garden City AL8 7TT

Erection of single storey side extensions x 2 and two storey rear extension

183 Howlands Welwyn Garden City AL7 4RL

T1 & T2 – Field Maples (Front of Property) 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 all ivy from the stems. Remove the failed stem and leave the trees in a safe condition T3 – Pine (Rear Garden) Crown thin the upper half of the canopy to reduce the dense reaction growth resulting from previous pruning works, matching the density of the lower crown. Undertake minor formative pruning to improve the overall shape T4 – Cherry (Dead) (Rear Garden) Monolith the dead Cherry to approximately 3m above ground level, retaining the ivy on the remaining stem where practicable. The tree overhangs the neighbouring property T5 – Holly (Rear Garden) Reduce the crown by approximately 2m all round, leaving a balanced and natural-looking crown T6 – Cherry (Dead) (Rear Garden) Prune back the ivy covering the dead stem to reduce weight and minimise the risk of stem failure

2 Cunningham Avenue Hatfield AL10 9LP

Certificate of lawfulness for a proposed loft conversion including a rear dormer and rooflights within the front roofslope

143 The Ryde Hatfield AL9 5DP

Erection of single storey rear extension with raising of roof to existing extension, and alterations to openings to rear and side elevations

27 Batterdale Hatfield AL9 5JG

Certificate of lawfulness for the existing like-for-like replacement of damaged and aged windows on the front and rear elevations

2 Valley Road Welwyn Garden City AL8 7DF

1 x Holly to reduce height by approximately 3m height 1 x Lawson cypress to reduce by approximately 2.5m in height. 1 x Plum to reduce height by approximately 3m Above 3 are domination side of the garden, they are thick dense and evergreen. Reducing to allow more light into garden and control the size 1 x Apple to reduce lateral branches over lawn area by approximately 2m to reduce lateral branches over lawn to maintain size of tree & provide more space and light to lawn area 1 x Ash to reduce lateral branches over lawn area by approximately 2m to reduce lateral branches as now crossing half the garden and blocking light

49 Knightsfield Welwyn Garden City AL8 7JE

1 x Irish Yew to remove in sections to ground level. Remove as tree is close to front room window and blocking the light. Tree owner is also elderly and wants to be able to see out of the window

6 West View Hatfield AL10 0PJ

Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3m in height and 3m to the eaves

49 Knightsfield Welwyn Garden City AL8 7JE

1 x Irish Yew to remove in sections to ground level. Remove as tree is close to front room window and blocking the light

6 West View Hatfield AL10 0PJ

Certificate of lawfulness for erection of single storey rear extension, side and rear extension, hip to gable loft conversion with rear dormer

6 West View Hatfield AL10 0PJ

Erection of part single part two-storey rear extension

Land at Great North Road Stanborough Welwyn Garden City AL8 7TQ

Variation of condition 28 (approved plans) on planning permission 6/2025/0764/FULL

2 Valley Road Welwyn Garden City AL8 7DF

1 x Holly to reduce height by approx 3m height 1 x Lawson Cypress to reduce by approx 2.5m in height 1 x Plum to reduce height by approx 3m 1 x Apple to reduce lateral branches by approx 2m to reduce lateral branches over lawn 1 x Ash to reduce lateral branches over lawn area by approx 2m

29 Sheepcote Welwyn Garden City AL7 4QA

Fell 1 x ash tree

41 Rosedale Welwyn Garden City AL7 1DW

Remove 2x quince trees - trees are engulfed in ivy and have a lot of deadwood present

23 The Ridgeway Potters Bar EN6 4BB

Certificate of lawfulness for the erection of an outhouse to accommodate gym facilities

29 Sheepcote Welwyn Garden City AL7 4QA

Remove 40ft ash tree - The ash tree is showing signs of basal decay and structural defects from previous poor pruning, raising concerns over its long-term stability. Its raised roots are also damaging and lifting garden pathways, creating an ongoing maintenance and trip hazard. Continued pruning would require significant ongoing expenditure, therefore removal is considered appropriate on arboricultural, safety and practical grounds

57 Tolmers Road Cuffley Potters Bar EN6 4JG

Submission of details pursuant to condition number 3 (Hard and Soft Landscaping) on planning permission 6/2026/0435/FULL

82 Attimore Road Welwyn Garden City AL8 6LP

Remove Ash tree stem to ground level - tree is in the way of fence/boundary line.

9 Autumn Grove Welwyn Garden City AL7 4DB

Installation of 1 x Extreme uPVC french door set, Smooth White uPVC frames inside & out, Multipoint locking mechanism, Ultion High Security door cylinder, White hardware, Trickle Vents to comply and Clear Toughened safety glass

82 Attimore Road Welwyn Garden City AL8 6LP

Remove Ash tree stem to ground level

5 Ashley Close Welwyn Garden City AL8 7LH

Proposed addition of a 3104 x 5474 mm pent roofed wooden shed to rear garden

9 Barleycroft Green Welwyn Garden City AL8 6JY

Replacement of existing wooden garage with wooden shed

4 Brookmans Avenue Brookmans Park AL9 7QJ

Retention of single storey timber structure as gym and addition of storm porch

6 Marsden Road Welwyn Garden City AL8 6XZ

Erection of single storey side extension and part single, part two storey rear extension

27 The Grove Brookmans Park AL9 7RL

Submission of details pursuant to Condition 1 (details of external render) and Condition 2 (details of windows and doors) on planning permission 6/2025/1617/HOUSE

9 Barleycroft Green Welwyn Garden City AL8 6JY

Replacement of wooden 'garage' (only been used for storage) with a similar size wooden shed in the same location. The wooden garage is 6.3m x 2.75m. The proposed shed will be 6m x 3m.

16 Oak Road Woolmer Green SG3 6LS

Erection of part single, part two storey rear extension, new windows and doors to existing side and rear elevations and installation of rooflight within the rear roofslope

38 The Grove Brookmans Park AL9 7RN

Submission of details pursuant to Condition 2 (boundary treatments) on planning permission 6/2025/0285/HOUSE

108 Tolmers Road Cuffley Potters Bar EN6 4JR

Proposed replacement dwelling

Glebe House Ellesfield Welwyn AL6 9HB

TPO 1016 1 x White Poplar to reduce upper canopy by approximately 10m height - Reduce upper canopy due to large volume of regrowth from historical reduction. Cavities and decay at old pruning wounds. Tree is close to neighbouring properties with a recent limb failure. 1 x White willow leaning over river to reduce by approximately 50% -tree is leaning heavily over river, reduction will prevent risk of failing. 1 x Goat willow to reduce by approximately 4m height and 3m width - tree is in decline, reduction is to stabilise upper canopy and allow retention of tree.

5 Branch Close Hatfield AL10 0TW

Garage conversion and extension to garage for use as annex

8 The Valley Green Welwyn Garden City AL8 7DQ

Erection of one and two storey rear extension, loft conversion with side dormer addition, plus fenestration alterations

8 The Valley Green Welwyn Garden City AL8 7DQ

Erection of a two storey rear extension, installation of side dormer with loft conversion with fenestration alterations

6 Parkway Close Welwyn Garden City AL8 6HJ

1 x Hawthorn to reduce height to leave around 4-5m above ground level. To retain balance and minimise overhang to neighbours garden

14 Brockswood Lane Welwyn Garden City AL8 7BG

Fitting an air-to-air heat pump on a rear wall

6 Parkway Close Welwyn Garden City AL8 6HJ

1 x Hawthorn to reduce height to leave around 4-5m above ground level. To retain balance and minimise overhang to neighbours garden

3 Holly Hall Court Church Street Welwyn AL6 9LH

Replacement like-for-like front door and one window

Tesco Heart Building Car Park Shire Park Welwyn Garden City AL7 1TW

Installation of one padel tennis court as an additional ancillary sporting and recreational facility to the Tesco office headquarters, together with associated floodlighting, and hard landscaping works.

469 Howlands Welwyn Garden City AL7 4HP

Removal of front hedge on boundary of property and to replace existing block paving, with new block paving with better drainage

16 Oak Road Woolmer Green SG3 6LS

Erection of annexe