Planning applications in Knebworth Ward

Field Off The B656, North Of Mansells Lane Codicote Hertfordshire SG4 9TJ

Installation of hard standing and creation of vehicular access of Hitchin Road following closure of existing field access.

55 Codicote Road Codicote Welwyn Hertfordshire AL6 9TY

Details Reserved by Condition 11: (Ecological Enhancement Plan) of planning permission 25/00974/FP granted 14.8.2025

159 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PR

Single storey rear and front extensions following demolition of existing rear element.

8 The Stables Pottersheath Welwyn Hertfordshire AL6 9GR

Widen first floor (obscured) window on the SW elevation (as Non-Material Amendment to planning permission 26/00036/FPH granted 27/02/2026)

66 Park Lane Knebworth Hertfordshire SG3 6PW

Variation of conditions 1 and 14 (Revised Plans-Ecological Enhancements) of Reserved Matters application reference 25/01658/RM granted 28.11.2025 for reserved matters (appearance, landscaping, layout, scale and internal access) for the erection of 9 dwellings with associated landscaping, parking and amenity space pursuant of outline permission 23/02946/OP granted 19.06.2025.

14 Deards End Lane Knebworth Hertfordshire SG3 6NL

Erection of two storey side extension following demolition of existing ground floor side extension

Land At Eiling Lodge Drivers End Codicote Hertfordshire SG4 8TP

Front extension to barn and change of use to a single dwellinghouse

57 Haygarth Knebworth Hertfordshire SG3 6HF

T1: Yew - Clear from path & reduce away from no 68. T2: Beech- Girdle ivy at 1.5m. T3: Oak - Remove 4x Elm, 3x Sycamore, 1x Norway Maple from under its crown & reduce lowest roadside limb that is resting in Sycamore by 2-3m & Second limb above Highway by 2-3m. T4, T5: Holly - Girdle ivy at 1.5m. T6: 4x Hornbeam- Reduce/re-pollard back to boundary. T7: Oak, 2x Sycamore - Remove from beneath Ash, Oak & Lime. T8: Philadelphus - Remove 2x ivy covered stems & 1x Ivy covered

6 Deards End Lane Knebworth Hertfordshire SG3 6NL

T1: Linden - Reduce by 1/3. T2: Sycamore - Remove. T10, T11: Sycamore - Remove. T12: Liquid Amber - Remove. T13: Elder - Remove. T16: Hawthorn - Remove. T17: Damson - Remove. T18: Silver Birch - Remove. T19: Apple - Remove. T20: Horse Chestnut - Reduce up to 1/3. T21: Oak - Reduce up to 1/3. T22: Horse Chestnut - Reduce up to 1/3. T23: Fir - Remove. T24: Hazel - Remove trunks.

4 Deards End Lane Knebworth Hertfordshire SG3 6NL

T25: Pear - Remove

25a Deards End Lane Knebworth Hertfordshire SG3 6NL

2x Fir - Reduce in height by 3m removing the over hanging branches.

Land Adjacent To 67 Park Lane Knebworth Hertfordshire SG3 6PW

Erection of building for church hall use including car parking, hard and soft landscaping, bin store and air source heat pump enclosure on south-west elevation. Alterations to existing vehicular access.

66 Park Lane Knebworth Hertfordshire SG3 6PW

Details reserved by condition 7 (Archaeological Written Scheme of Investigation) of reserved matters application reference no 25/01658/RM granted 28.11.2025.

78 London Road Knebworth Hertfordshire SG3 6HB

Single storey rear extension. Alterations to existing garage including insertion of front window following removal of garage door and raising roof to facilitate garage conversion. Erection of open-sided front porch and pitched roof above existing front bay window.

27 Lytton Fields Knebworth Hertfordshire SG3 6BA

Enlargement of existing front dormer windows and insertion of 2 no. front rooflights. Insertion of rear box dormer with 2 no. Juliette balconies. Replacement flat roof above existing rear element and demolition of existing conservatory. Front porch extension and alterations to fenestration.

23 Watton Road Knebworth Hertfordshire SG3 6AH

Rear roof extension including insertion of rear dormer window and side rooflights to facilitate additional accommodation at first floor level following removal of existing rear dormer window.

Briar Cottage Pottersheath Road Pottersheath Welwyn Hertfordshire AL6 9SU

Two-storey side/rear extension and insertion of first floor side window following demolition of existing shed and oil tank.

Land Adjacent To 6 Drivers End Codicote Hertfordshire

Erection of one self-build detached dwelling including detached garage, parking and landscaping

64 Stockens Green Knebworth Hertfordshire SG3 6DQ

Replace existing windows to front, side and rear elevations.

21 Danesbury Park Road Welwyn Hertfordshire AL6 9SH

Two storey rear extension following removal of existing single storey rear elements

76 Pondcroft Road Knebworth Hertfordshire SG3 6DE

Single storey side and rear extensions with car port following removal of existing detached rear garage and shed.

68 Stevenage Road Knebworth Hertfordshire SG3 6NN

Erection of single storey detached outbuilding for recreation use following demolition of existing detached outbuilding.

76 Pondcroft Road Knebworth Hertfordshire SG3 6DE

Insertion of L shaped rear dormer with Juliet balcony and 3 no. front roof lights to facilitate loft conversion to habitable space

Nup End Industrial Estate Nup End Old Knebworth Knebworth Hertfordshire SG3 6QJ

Details reserved by BNG Condition of planning permission reference 26/00260/FP granted 28.04.2026.

Land Between Knebworth Golf Club And A1M Old Knebworth Lane Knebworth Hertfordshire

Screening Opinion: Proposed solar photovoltaic farm and associated infrastructure.

27 Lytton Fields Knebworth Hertfordshire SG3 6BA

No raising of roof required, flat roof dormers (as existing design), Juliette balconies to rear dormer, extension of porch roof and no single storey rear extension as non-material amendment to planning permission reference 25/03244/FPH granted on 12.02.2026).

Connor Gardens Danesbury Park Road Welwyn Hertfordshire AL6 9SN

Change of use of land to residential static caravans/park homes to include footpath extension, parking, improved access points and associated landscaping (including changing the levels of part of the quarry area) and infrastructure.

60 London Road Knebworth Hertfordshire SG3 6HJ

Erection of attached single storey garage to side elevation following demolition of existing detached side single storey shed.

Chapel Barn Rabley Heath Road Codicote Welwyn Hertfordshire AL6 9UA

Erection of detached ancillary garden annex with decking and associated access steps

Southernwood Pottersheath Road Pottersheath Welwyn Hertfordshire AL6 9ST

Single storey rear extension, alterations to fenestrations including insertion of rear first floor Juliet balcony and external cladding

Robin Hood And Little John Rabley Heath Road Codicote Welwyn Hertfordshire AL6 9UB

Variation of Condition 2 (the new position of the building requires the approved drawing numbers to change) of planning permission 25/02741/FP granted on 19.01.2026 for Erection of outbuilding to provide staff accommodation and kitchen storage following demolition of existing chicken shed.

21 Danesbury Park Road Welwyn Hertfordshire AL6 9SH

Two storey rear extension following demolition of existing rear elements.

Land At The Rear Of 25 Danesbury Park Road Welwyn Hertfordshire AL6 9SH

Erection of up to 2 dwellings and associated infrastructure

27 Stockens Green Knebworth Hertfordshire SG3 6DQ

Single storey rear extension following demolition of existing conservatory

55 Codicote Road Codicote Welwyn Hertfordshire AL6 9TY

T10: Ash - Remove. T11: Horse Chestnut - Remove

2 Church Gardens Stevenage Road Knebworth Hertfordshire SG3 6AR

2 x Hornbeam - Reduce by 3.5m height

16 Deards End Lane Knebworth Hertfordshire SG3 6NL

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 reduction by approx 5m. Crown lift / raise canopy by approx 2m. Reduce lateral spread by approx 2m.

12 Stevenage Road Knebworth Hertfordshire SG3 6AW

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 (development already partially commenced).

35 Hornbeam Spring Knebworth Hertfordshire SG3 6AY

Insertion of side dormer to facilitate loft conversion

14 Deards End Lane Knebworth Hertfordshire SG3 6NL

Erection of two storey side extension following demolition of existing ground floor side extension

53 Orchard Way Knebworth Hertfordshire SG3 6BT

Single storey rear extension.

18 Deards End Lane Knebworth Hertfordshire SG3 6NL

Installation of 9 solar panels on flat roof below higher pitched roof

Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

Insertion of front bay window following removal of existing garage doors to facilitate garage conversion into habitable accommodation. Front entrance porch and installation of side canopy. Insertion of rooflights to existing rear element roofslope. Alterations to fenestration. Erection of boundary wall/railings and installation of entrance gates.

80 London Road Knebworth Hertfordshire SG3 6HB

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 of previously approved planning permission 22/01469/FPH granted 26.07.2022)

Robin Hood And Little John Rabley Heath Road Codicote Welwyn Hertfordshire AL6 9UB

Confirmation of material start on site of planning permission 24/01009/FP & Listed Building Consent 24/01010/LBC granted on 17.07.2024 for Infill courtyard extension and conservatory to west elevation. Alterations to fenestration

Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

Erection of four bay cartlodge with habitable accommodation at first floor and external staircase following demolition of existing stables and store.

Annexe At Cuckoo Hall 73 Park Lane Old Knebworth Hertfordshire SG3 6PP

Erection of one self-build dwelling including ancillary annexe following demolition of existing dwelling to including parking, hard and soft landscaping and installation of rear swimming pool.

Land Adjacent 21 Danesbury Park Road Pottersheath Hertfordshire AL6 9SH

Erection of two detached dwellings with detached garages including parking and hard and soft landscaping.

Nup End Industrial Estate Nup End Old Knebworth Knebworth Hertfordshire SG3 6QJ

Erection of building for general industrial use including car parking, refuse, cycle storage and landscaping.

Waterdells Pottersheath Road Welwyn Hertfordshire AL6 9TA

Erection of one detached dwelling