67 London Road Woolmer Green Knebworth Hertfordshire SG3 6HG
28th May 2026
Erection of two single storey rear extensions.
27 Stockens Green Knebworth Hertfordshire SG3 6DQ
29th April 2026
Single storey rear extension following demolition of existing conservatory
2 Church Gardens Stevenage Road Knebworth Hertfordshire SG3 6AR
22nd April 2026
2 x Hornbeam - Reduce by 3.5m height
14 Deards End Lane Knebworth Hertfordshire SG3 6NL
17th April 2026
Erection of two storey side extension following demolition of existing ground floor side extension
16 Deards End Lane Knebworth Hertfordshire SG3 6NL
16th April 2026
T1: Cedar - Crown reduction by approx 7m, crown lift / raise canopy by approx 2m. Reduce lateral spread by approx 2m. Prune back to provide approx 0.5m clearance from the BT telephone line where branches are currently encroaching. T2: Thuja - Crown reducti
53 Orchard Way Knebworth Hertfordshire SG3 6BT
16th April 2026
Single storey rear extension.
12 Stevenage Road Knebworth Hertfordshire SG3 6AW
15th April 2026
Installation of front brick wall including brick piers, coping stones, metal railings, and vehicular access gate following removal of existing timber picket fence and vehicular gate.
35 Hornbeam Spring Knebworth Hertfordshire SG3 6AY
8th April 2026
Insertion of side dormer to facilitate loft conversion
53 Orchard Way Knebworth Hertfordshire SG3 6BT
26th March 2026
Single storey rear extension
80 London Road Knebworth Hertfordshire SG3 6HB
17th March 2026
Two storey rear extension with Juliet balcony, front porch and addition of pitched roof to existing garage and replace garage door with a window to facilitate conversion of garage into habitable accommodation following removal of existing porch. (renewal o
12 Deards End Lane Knebworth Hertfordshire SG3 6NL
10th March 2026
T1: Oak - 2 -3 m Reduction (approx 30%). T2: Ash - Crown tidy and deadwood removal
31 Gun Road Gardens Knebworth Hertfordshire SG3 6ED
24th February 2026
Single storey rear extension following demolition of existing conservatory. Insertion of front and rear ground floor window following removal of existing garage doors and roller shutter to facilitate conversion of garage into habitable accommodation.
32 Stockens Dell Knebworth Hertfordshire SG3 6BG
18th February 2026
Insertion of utility room rooflight (as Non-Material Amendment to planning permission 25/02928/FPH granted 08.01.2026).
6 Deeping Close Knebworth Hertfordshire SG3 6BW
28th January 2026
First floor side extension above existing garage and part two storey side extension. Front porch extension and insertion of front ground floor window following removal of existing garage doors to facilitate garage conversion. Alterations to fenestration. E
1 Church Gardens Stevenage Road Knebworth Hertfordshire SG3 6AR
23rd January 2026
Hornbeam - Reduce back to previous pruning points. (Approx 1.5m height 1m width)
15 Deards End Lane Knebworth Hertfordshire SG3 6NL
23rd January 2026
Erection of detached double garage with office in roof space and installation solar panels following demolition of existing garage.
150-152 London Road Knebworth Hertfordshire SG3 6EY
15th January 2026
Details reserved by Condition 4 (Noise Assessment) of planning permission 25/00255/FP granted 25.4.2025.
27 Lytton Fields Knebworth Hertfordshire SG3 6BA
12th January 2026
Replacement raised roof including 2.no front dormer windows, 2.no front rooflights windows and 1.no rear dormer window. Single storey rear extension following removal of existing conservatory. Alterations to fenestration including insertion of garage door
3 Swangleys Lane Knebworth Hertfordshire SG3 6AA
19th December 2025
Single storey rear extension following partial demolition of existing rear element and removal of existing lean-to, outbuildings, and chimney
148 - 150 London Road Knebworth Hertfordshire SG3 6EY
15th December 2025
Installation of 1 no. internally illuminated fascia sign and 1 no. internally illuminated projection sign. (Development already carried out)
29 Stockens Green Knebworth Hertfordshire SG3 6DQ
9th December 2025
Single storey rear extension.
28 Stockens Green Knebworth Hertfordshire SG3 6DQ
2nd December 2025
T1: Beech - Reduce by approx 3m height and 2m width. T2: Beech - Reduce by approx 3m in height, reduce side over neighbouring garden by around 3m and remaining width by around 2m.
32 Stockens Dell Knebworth Hertfordshire SG3 6BG
27th November 2025
Alterations to existing attached garage to include raised roof and insertion of door following removal of existing garage doors to facilitate garage conversion. Alterations to front porch fenestration.
23 Pondcroft Road Knebworth Hertfordshire SG3 6DB
26th November 2025
Insertion of L shaped rear dormer with Juliette balcony and 2 no. rooflights to front roofslope to facilitate loft conversion to habitable space.
9 Watton Road Knebworth Hertfordshire SG3 6AH
24th November 2025
Single store rear extension following demolition of existing rear extension. Rear box dormer and 3 front roof lights to facilitate conversion of loft into habitable accommodation.