Planning applications in Hertsmere, July 2026

21 Folly Close Radlett Hertfordshire WD7 8DR

Application for a non-material amendment to allow for alterations to fenestration and internal layout amendments following the grant of planning permission 24/0266/HSE.

49 Loom Lane Radlett Hertfordshire WD7 8NX

Variation of condition 2 (plans) to allow for revised block plan denoting no. of as-built air source heat pumps / air-con units and level changes in the garden following grant of planning permission reference 25/1603/VOC.

11 Spring Close Borehamwood Hertfordshire WD6 5HD

Single story rear extension and alterations to existing right flank storage room to include replacement flat roof, increase in height, and alterations to fenestration.

2 Barham Avenue Elstree Borehamwood Hertfordshire WD6 3PN

Application for approval of details reserved by condition 3 (schedule of materials) of planning permission reference 25/0013/LBC.

57 Aberdale Gardens Potters Bar Hertfordshire EN6 2JN

Conversion of loft to habitable space to include hip to gable roof alterations, rear dormer and 3x front rooflights. Certificate of Lawful Development (Proposed).

Land Adjacent To 26 Woodhall Lane Shenley Hertfordshire

Construction of 8x dwellings with associated access and public realm landscaping.

Charleston Paddocks St Albans Road South Mimms Potters Bar Hertfordshire EN6 3ND

Application for approval of details reserved by condition 19 (Geotechnical submissions) of planning permission reference 23/1049/OUT.

57 Aberdale Gardens Potters Bar Hertfordshire EN6 2JN

Single storey rear extension. Depth: 6m, Height: 3.15m, Eaves: 3m.

Units 4 To 5 Riverside Industrial Estate London Colney Bypass London Colney Hertfordshire

Submission of Reserved Matters (details of appearance, landscaping, layout and scale) following Outline permission 5/2025/1841 dated 25/03/2026 for Variation of Condition 3 (approved plans) to amend the approved Paramete. (Adjacent Authority application)

24 Mount Grace Road Potters Bar Hertfordshire EN6 1RD

Construction of a single-storey BBQ within the garden. Certificate of Lawful Development (Proposed).

24 Mount Grace Road Potters Bar Hertfordshire EN6 1RD

Construction of a single-storey outbuilding within the rear garden. Certificate of Lawful Development (Proposed).

29 Willow Way Potters Bar Hertfordshire EN6 2PR

Construction of a single-storey rear extension to include alterations to fenestration.

14 Rushfield Potters Bar Hertfordshire EN6 3HL

Conversion of loft to habitable space with rear dormer, 3 x front roof lights and removal of chimney stack. Construction of single storey rear extension and alterations to fenestration.

6 Brickfield Cottages Theobald Street Borehamwood Hertfordshire WD6 4SD

Subdivision of the existing dwelling into two self-contained one-bedroom dwellings (Use Class C3), together with minor internal alterations, enlarged refuse storage, secure cycle storage and associated operational improvements. (Part retrospective.)

31 Tempest Avenue Potters Bar Hertfordshire EN6 5JU

Change of use from class C4 (6 Bed HMO) to sui generis (11 bedroom HMO) use facilitated by internal alterations, provision of waste and cycle storage, and installation of new dropped kerb.

6 Brickfield Cottages Theobald Street Borehamwood Hertfordshire WD6 4SD

Construction of a single-storey detached outbuilding within the rear garden of the existing dwellinghouse for use as a private gym incidental to the enjoyment of the main dwelling (Use Class C3). Certificate of Lawful Development (Existing).

Borehamwood Fire Station Elstree Way Borehamwood Hertfordshire WD6 1JP

Full planning application for the installation of modular sleeping and decontamination units within the site at Borehamwood Fire Station, Elstree Way, Borehamwood, Hertfordshire, WD6 1JP - Planning Reference PL/0586/26 (Consultation from Herts County Council).

27 Park View Potters Bar Hertfordshire EN6 5PY

Demolition of existing conservatory to facilitate construction of a part single, part two storey side and rear extension, single storey front porch extension, and alterations to fenestration. Conversion of loft to habitable space to include rear dormer and 3 x front roof lights.

Land At Bushey Hall Golf Club Bushey Mill Lane Bushey Hertfordshire

Application for approval of details reserved by condition 6 (Archaeology - Condition 1) of planning permission reference 24/1022/OUT.

15 Radlett Park Road Radlett Hertfordshire WD7 7BG

Erection of single storey outbuilding to rear garden. Certificate of Lawful Development (Proposed).

2 Norton Close Borehamwood Hertfordshire WD6 5DW

Tree: T3 Oak Work proposed: Crown lift to 5m Reason for works: Crown lift to achieve clearance for adjacent highway. Low growth currently obscuring the highway

129 Cowley Hill Borehamwood Hertfordshire WD6 5NA

Demolition of existing outbuildings to facilitate construction of two storey side extension with associated roof works and 2x front rooflights, single storey rear extension with associated roof works and conversion of garage to habitable space to include replacement of garage door with window.

44 Kimptons Mead Potters Bar Hertfordshire EN6 3JA

Existing use as a HMO (Class C4) Certificate of Lawful Development (Existing).

31 Tempest Avenue Potters Bar Hertfordshire EN6 5JU

Change of use from class C4 (6 Bed HMO) to sui generis (10 bedroom HMO) use facilitated by internal alterations and new dropped kerb.

8 Melrose Avenue Potters Bar Hertfordshire EN6 1SZ

Existing use as a HMO (Class C4). Certificate of Lawful Development (Existing).

119 Ashwood Road Potters Bar Hertfordshire EN6 2PW

Existing use as an HMO (Class C4). Certificate of Lawful Development (Existing).

81 Sunnybank Road Potters Bar Hertfordshire EN6 2NL

Conversion of house to 6x bed HMO (Class C4). Certificate of lawful development (Existing).

22 Holly Drive Potters Bar Hertfordshire EN6 2QL

Conversion of house to 6x bed HMO (Class C4). Certificate of lawful development (Existing).

21A Coldharbour Lane Bushey Hertfordshire WD23 4NP

Construction of first-floor rear infill extension.

87 Southgate Road Potters Bar Hertfordshire EN6 5EB

Conversion of house to 5x bed HMO (Class C4). Certificate of lawful development (Existing).

69 Elmroyd Avenue Potters Bar Hertfordshire EN6 2EF

Demolition of existing garage, store, and conservatory to facilitate construction of single storey side and rear extension and extension to existing loft space to include 2x side dormers, rooflights, removal of chimney stack and associated roof alterations.

25 Elmroyd Avenue Potters Bar Hertfordshire EN6 2EE

Single storey rear extension including new internal connection to garage. Conversion of garage to habitable space including roof alterations. Alterations to fenestration and landscaping. External air conditioning condenser unit within rear garden concealed within timber housing.

W Block Clare Hall Laboratories Blanche Lane South Mimms Hertfordshire

Outline application (with all matters reserved except for means of access) for the demolition of buildings on site and erection of up to 185 homes (including 50% affordable housing) alongside access, landscaping, car parking and associated works.

Hazel Tree Lodge Back Lane Letchmore Heath Watford Hertfordshire WD25 8EF

Front boundary works to include widening of existing vehicular access and driveway, resurfacing with permeable block paving and associated alterations to the boundary treatment and landscaping.

138 Stanborough Avenue Borehamwood Hertfordshire WD6 5LR

Retention of the change of use from a single dwellinghouse (Use Class C3) into 3no. self-contained flats (Use Class C3), including associated cycle and refuse storage.

Fields Theobald Street Radlett Hertfordshire WD7 7LS

Variation of condition 13 (bus stops) to allow for changes from a pre-commencement to a pre-occupation condition and to upgrade alternative bus stops following grant of planning permission 25/1379/OUT.

3 Bentley Place Bentley Heath Barnet Hertfordshire EN5 4BF

Part single, part two-storey rear extension, 2x new rear dormers, conversion of existing garage into habitable room, and alterations to fenestration.

Land Lying To The East Of Hartfield Avenue And Fronting Onto Barnet Lane Elstree Hertfordshire

Application for approval of details reserved by condition 2 (external materials) of planning permission reference 25/1122/REM.

8 Admiral Gardens Bentley Heath Barnet Hertfordshire EN5 4FB

Single storey side extension.

52 Loom Lane Radlett Hertfordshire WD7 8PA

Tree: TPO/125/1987 Mature Cedar (Cedrus spp.) situated in the front garden of 52 Loom Lane, Radlett, protected by Tree Preservation Order. Proposed works: Fell the tree to ground level. Reason: The tree is in significant physiological decline, with a very sparse canopy and extensive needle loss. A tree surgeon has inspected the tree and advised that, in their professional opinion, the tree appears to be dying. A written report will be provided in support of this application.

24 Southgate Road Potters Bar Hertfordshire EN6 5DZ

Subdivision of detached dwelling into 3x flats facilitated by demolition of existing conservatory to facilitate construction of single storey rear extension. Construction of first floor side extension. Conversion of garage to habitable space to include replacement of garage doors with window. Conversion of loft to habitable space with rear dormer and insertion of rooflights, alterations to fenestration and alterations to roof. Alterations to hard landscaping, bin and bike storage (additional information received on 30.07.2026 and 13.08.2026 and as amended by plans received on 31.07.2026).

24 Southgate Road Potters Bar Hertfordshire EN6 5DZ

Subdivision of detached dwelling into 2x flats facilitated by demolition of existing conservatory to facilitate construction of single storey rear extension. Construction of first floor side extension. Conversion of garage to habitable space to include replacement of garage doors with window. Conversion of loft to habitable space with rear dormer and insertion of rooflights, alterations to fenestration and alterations to roof. Alterations to hard landscaping, bin and bike storage (additional information received on 31.07.2026 and 13.08.2026).

4 Honeywood Close Potters Bar Hertfordshire EN6 5QE

Existing use as an HMO (Class C4). Certificate of Lawful Development (Existing).

69B Bushey Grove Road Bushey Hertfordshire WD23 2GJ

Single storey rear extension and conversion of garage to habitable space including removal of garage door with replacement window.

87 Chandos Road Borehamwood Hertfordshire WD6 1UX

Variation of condition 2 (plans) to allow for reduction of the approved first floor side extension, revision to the roof design, alterations to internal floor layouts and fenestration following grant of planning permission 24/0127/HSE.

31 Whaley Road Potters Bar Hertfordshire EN6 2RA

2x single storey rear extensions. Depth: 5.95m, Height: 3.00m, Eaves: 3.00m.

6 Loom Lane Radlett Hertfordshire WD7 8AD

30T Norway maple (possibly part of TPO group G7 and incorrectly identified as a sycamore. Covered by conservation area regardless of TPO). This tree is recommended for removal due to a large column of decay with visible Kretzschmaria deusta fungi from base of stem to stem bifurcation at 3m height. A sounding mallet test on the stem indicated extensive internal stem decay. The tree is located adjacent to a driveway and may be at risk of failure. Fell to ground level and grind stump. 32T Common yew (possibly part of TPO group G7 - exact location of trees on TPO plan is not clear. TPO is almost 30 years old so unlikely to have been a part of the original order as the tree is too young but I want to make sure if it is now covered. Also within conservation area) - fell to ground level and grind stump. This small tree (5m height, 100mm DBH, category C1) requires removal in order to facilitate the construction of a woodland walk footpath and adjacent bin store. 33T Common yew (possibly part of TPO group G7 - exact location of trees on TPO plan is not clear. TPO is almost 30 years old so unlikely to have been a part of the original order as the tree is too young but I want to make sure if it is now covered. Also within conservation area) - fell to ground level and grind stump. This small tree (5m height, 160mm DBH, category C1) requires removal in order to facilitate the construction of a woodland walk footpath and adjacent bin store. The 3No. trees that are proposed for removal are located within a densely wooded area which limits the possibility for replanting due to light competition from the overhanging canopy.

41 Penscroft Gardens Borehamwood Hertfordshire WD6 2QZ

Erection of outbuilding in rear garden for use as both a hair salon (Class E) and home office (Class C3).

Land Lying To The East Of Hartfield Avenue And Fronting Onto Barnet Lane Elstree Hertfordshire

Application for approval of details reserved by condition 4 (retaining walls) of planning permission reference 25/1122/REM.

31 Whaley Road Potters Bar Hertfordshire EN6 2RA

2x single storey rear extensions. Depth: 5.00m, Height: 3.00m, Eaves: 3.00m.