Planning applications in North Hertfordshire, September 2026

77 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PP

Erection of one detached three-bedroom dwelling including detached double garage with Air Source Heat Pump and soft and hard landscaping works following demolition of existing detached structures.

12 Cashio Lane Letchworth Garden City Hertfordshire SG6 1AX

Single storey rear extension following partial demolition of existing garage.

12 Cashio Lane Letchworth Garden City Hertfordshire SG6 1AX

Single storey rear extension following partial demolition of existing garage. Internal alterations.

The Orchard Fore Street Weston Hitchin Hertfordshire SG4 7AS

2x Conifer - Remove

Whitings Court Paynes Park Hitchin Hertfordshire SG5 1EJ

T1: Sorbus - Reduce by approx 1.5m. T2: Robina - Reduce by approx 1.5m. T3: Sycamore - Reduce height by approx. 3m. Remove epicormic growth

80 Balmoral Road Hitchin Hertfordshire SG5 1XQ

Single storey rear extension following removal of existing pitched roof. Front porch extension and external rendering to existing rear element

Trees Gosmore Road Hitchin Hertfordshire SG4 9AN

Erection of 3 no. detached dwellings with garages following demolition of existing house and outbuildings. Formation of vehicular access onto the highway.

Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

External wall insulation and timber boarding added to east wall. Front door design updated, bi-fold doors changed to 6 doors and addiotnal rooflight added to landing outside bedroom 6 (as Non-Material Amendment to Planning Permission 26/00817/FPH granted 03.06.2026)

2 Croft Lane Letchworth Garden City Hertfordshire SG6 1AP

B. Lawson Cypress - Fell. A. Birch - Fell. C. Damson - Loping/Prune.

172 Wilbury Road Letchworth Garden City Hertfordshire SG6 4JA

Replace single-glazed first floor window on front elevation with timber slimline double-glazed window.

5 The Dovecote Back Street Ashwell Baldock Hertfordshire SG7 5PE

T1: Silver Birch - Crown reduce by up to 1.5m in height and approx 1m in lateral spread to create a balanced crown. Prune branches back to suitable secondary growth points and avoid leaving stubs or making indiscriminate cuts through the main stems. Approx finished dimensions: 6m high by 3.5m wide. T2: Cherry Plum - Crown reduce by up to 1.5m in height and approx 1m in lateral spread, retaining a natural, balanced crown. Prune branches back to suitable secondary growth points and avoid leaving stubs or making indiscriminate cuts through the main stems. Approx finished dimensions: 6m high by 3.5m wide.

Dinsley Field School Lane Preston Hitchin Hertfordshire SG4 7UE

T1, T2, T4, T5: Conifer - Reduce by 50%. T3: Sycamore - Reduce by 30%.

42 Oakfield Avenue Hitchin Hertfordshire SG4 9JD

Single storey rear extension and alterations to fenestration.

36 Willian Way Letchworth Garden City Hertfordshire SG6 2HG

First floor rear extension and single storey rear extension. Alterations to fenestration including insertion of first floor side window

15 Langbridge Close Hitchin Hertfordshire SG4 9EL

Removal of condition 3 (obscure glaze side facing windows) of planning permission 25/02894/FPH granted 14.01.2026 - Replacement roof involving raising roof ridge height and change to roof form, 2 rear dormer windows and 5 front roof lights to facilitate addition of first floor to existing bungalow. Front porch canopy and alterations to fenestration

Norton Way Peugeot Ltd Works Road Letchworth Garden City Hertfordshire SG6 1NT

Installation of three internally illuminated facia signs, non-illuminated welcome sign and internally illuminated freestanding totem sign.

The Hoo Codicote Road Whitwell Hertfordshire

Installation of non-turf cricket pitch.

Former Big Cat Sanctuary Codicote Road Welwyn Hertfordshire AL6 9TU

Erection of 109 residential dwellings with access, parking, hard and soft landscaping and public open space following demolition of all existing buildings and structures

6 Gun Meadow Avenue Knebworth Hertfordshire SG3 6BS

Single storey infill side extension to link existing garage to dwelling. Insertion of dormer windows to existing front, rear and side roofslopes. Alterations to fenestration.

9 Ransom Close Hitchin Hertfordshire SG4 9AX

Silver Birch - Remove.