Postcode district
Planning applications in AL5
Page 3 of 14, newest first. Back to the AL5 overview.
Applications in AL5
Newest first · page 3 of 14
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5/2026/1202 Decided
23 Roundfield Avenue Harpenden Hertfordshire Al5 5Bd
Erection of single storey extension to the side and rear of existing dwelling
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5/2026/1211 Decided
4 Townsend Lane Harpenden Hertfordshire Al5 2Qe
Conversion of existing garage into a living room. New and replacement doors, windows & roof light to the existing house, with minor internal layout alterations.
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5/2026/1189 Decided
41 Ambrose Lane Harpenden Hertfordshire Al5 4Bu
Two-storey rear extension, together with internal reconfigurations and associated fenestration alterations.
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5/2026/1181 Decided
Dove House Farm Annables Lane Kinsbourne Green Harpenden Hertfordshire Al5 3Pr
First floor rear extension over existing ground floor extension
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5/2026/1176 Decided
12 West Common Grove Harpenden Hertfordshire Al5 2Ll
Single storey side extension including new garage following demolition of existing garage Alterations to front elevation of main house comprising the removal of the existing feature timbers and rendered panels and replacement with brick slips to ground fl
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5/2026/1177 Decided
52 Alzey Gardens Harpenden Hertfordshire Al5 5Sy
Conversion and extension of detached garage with replacement roof over
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TP/2026/0301 Decided
3 The Cloisters Grange Court Road Harpenden Hertfordshire Al5 1Db
FIVE DAY NOTICE REQUIRED Duplicated stem below - Shorten by 2-3m approx over highway Remove previously failed stem Cedar - Removal of failed stem recently
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TP/2026/0299 Granted
2 West Common Way Harpenden Hertfordshire Al5 2Lf
T1 copper beech to remove 2 lower branches over road to remove conflict with highway. T2 cherry tree to lightly shape up by 10% to improve its appearance and get it away from the road.
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TP/2026/0300 Granted
122 Eastmoor Park Harpenden Hertfordshire Al5 1Bp
G1 - 5 X Conifers reduce height by 50% as overhanging Little Lane G2 - 2 X Conifers reduce height by 33 % as overhanging next door garden
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TP/2026/0298 Granted
17 Longcroft Avenue Harpenden Hertfordshire Al5 2Rd
Leylandii hedge - removal of the existing hedge. It is deteriorating in parts and has ivy growth. Replacement trees: pleached tree laurels spaced 1.5/ 2m apart to form a new hedge alongside border planting.
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5/2026/1159 Decided
24 Burywick Harpenden Hertfordshire Al5 2Ah
Two storey side and rear extension and two front dormer windows and one rear dormer windows
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5/2026/1152 Decided
43A Moreton End Lane Harpenden Hertfordshire Al5 2Ha
Addition of flat roof dormers to the first-floor ensuite bathroom on both the front and rear elevations. New utility room added to the rear of the garage space.
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TP/2026/0296 Granted
5 St Johns Court St Johns Road Harpenden Hertfordshire Al5 1Dl
T1 Multi Stem Cypress - Crown reduction by 2m approx vertical growth only. This will improve visibility to the public while driving and pedestrians on the path
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5/2026/1137 Decided
27 Ambrose Lane Harpenden Hertfordshire Al5 4Dg
Construction of garden outbuilding
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5/2026/1133 Decided
45 The Deerings Harpenden Hertfordshire Al5 2Pf
Variation of Condition 2 (approved plans) to reduce the rear projections from 4.3m to 3.8m and alterations to openings to rear elevation of planning permission 5/2025/2324 dated 15/04/2026 for Single storey rear extensions and internal alterations
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5/2026/1114 Decided
24 Tintern Close Harpenden Hertfordshire Al5 3Nz
Single storey side and rear extension. Infill of existing overhanging front elevations, new dormer to side elevation, alterations to front door (on side elevation) and replacement roof to garage
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5/2026/1120 Decided
160 Lower Luton Road Harpenden Hertfordshire Al5 5Ha
Single storey side / rear extension following demolition of garage.
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5/2026/1111 Decided
37 Meadow Walk Harpenden Hertfordshire Al5 5Tf
Proposed first floor accommodation over bungalow
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5/2026/1103 Decided
14 Station Road Harpenden Hertfordshire Al5 4Se
Advertisement Consent - Display of one externally illuminated fascia sign and one externally illuminated projecting/hanging sign
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5/2026/1100 Granted
Kinsbourne House The Common Kinsbourne Green Harpenden Hertfordshire Al5 3Pe
Certificate of Lawfulness (proposed) - Removal of the existing hipped roof over the south projection and part demolished east wall. Build of a single storey rear extension between the south projection and the Drawing Room wall to the east. Construct a hip
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5/2026/1101 Decided
14 Station Road Harpenden Hertfordshire Al5 4Se
Use of premises (ground floor) for both Use Class E (Commercial, Business, and Service) (current use) or Use Class F.1(a) (education centre), new signage, and all associated works
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TP/2026/0293 Granted
The White Horse Ph Hatching Green Harpenden Hertfordshire Al5 2Jp
T6 Ash - Fell and treat stump with eco plugs (broadleaved) T8 Cherry - Fell and treat stump with eco plugs (broadleaved) to combat subsidence damage to adj property
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TP/2026/0290 Granted
18A Douglas Road Harpenden Hertfordshire Al5 2Ew
Conifer (rear garden) fell outgrown situation
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5/2026/1089 Decided
25 High Firs Crescent Harpenden Hertfordshire Al5 1Nb
Removal of the existing flat roof and construction of a pitched roof to the front elevation
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5/2026/1084 Decided
10-12 Station Road Harpenden Hertfordshire Al5 4Se
Construction of two storey and single storey over existing rear extension to provide two one-bedroom flats at first floor level and office unit at ground floor level
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5/2026/1067 Decided
12 Leycroft Way Harpenden Hertfordshire Al5 1Jw
First floor side extension over existing single storey side projection, with new pitched roof to match existing roof form and front elevational treatment in character with existing building. Garage conversion to habitable accommodation. Alterations to exi
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5/2026/1074 Decided
1 Eastmoor Park Harpenden Hertfordshire Al5 1Bn
Proposed single storey front extension and new parking space with dropped kerb.
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5/2026/1086 Decided
50 Roundwood Park Harpenden Hertfordshire Al5 3Af
Variation of Condition 2 (approved plans) to remove solar panels on the left hand side, alteration to proposed window, increased roof angle, increase of ridge height, and tiles, and introduction of sun pipes to main roof of planning permission 5/2025/0617
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5/2026/1072 Decided
32 Park Avenue North Harpenden Hertfordshire Al5 2Ed
The proposal comprises the installation of four decorative brick gateposts, arranged as two gateposts at each of the existing driveway entrances. No gates are proposed. The gateposts will be constructed in brickwork to match the existing dwelling and fini
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5/2026/1065 Decided
Cedar House Holly Lane Harpenden Hertfordshire Al5 5Dy
Proposed new garden room and enlargement of existing rear first floor dormer windows
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5/2026/1057 Decided
14 Ennis Close Harpenden Hertfordshire Al5 1Ss
Single storey rear extension
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5/2026/1126 Decided
1 Hatching Green Close Harpenden Hertfordshire Al5 2La
Two storey rear extension and single storey rear extensions
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5/2026/1051 Decided
Pollards Farm The Common Kinsbourne Green Harpenden Hertfordshire Al5 3Pe
Reconfiguration of existing light well and extension to existing basement adjacent to main West Barn
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5/2026/1125 Decided
52 Wroxham Way Harpenden Hertfordshire Al5 4Pr
Single storey rear extension, garage conversion to gym and air conditioning unit
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5/2026/1163 Decided
Pollards Farm The Common Kinsbourne Green Harpenden Hertfordshire Al5 3Pe
Listed building Consent - Reconfiguration of existing light well and extension to existing basement adjacent to main West Barn
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5/2026/1045 Decided
44 Park Avenue North Harpenden Hertfordshire Al5 2Ed
Replacement six bedroom detached dwelling with garden room ancillary to the enjoyment of the dwellinghouse, following demolition of existing
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5/2026/1046 Decided
15 Pendennis Court Harpenden Hertfordshire Al5 1Sg
Garage conversion and house front extension
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5/2026/1049 Granted
16 Kipling Way Harpenden Hertfordshire Al5 4Xg
Prior Notification - Single storey rear extension 3.72m in height x 4m in depth with 2.75m height to eaves
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5/2026/1042 Withdrawn
Rear Of 10 & 12 Station Road Harpenden Hertfordshire Al5 4Se
Prior Approval - Change of use of the first floor from Class E to provide a 1 bedroom flat Class C3 and to keep the Class E usage on the ground floor
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5/2026/1032 Decided
6 Barton Close Harpenden Hertfordshire Al5 4Qt
Single storey and first floor rear extension, single storey front extension, loft conversion with front rooflights and rear dormer window, internal alterations
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5/2026/1026 Decided
51 Moreton End Lane Harpenden Hertfordshire Al5 2Ha
Demolition of existing garage and proposed erection of single-storey side and rear extensions and first-floor front extension with new roof. Also internal and external alterations.
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5/2026/1017 Decided
2 Applewood Close Harpenden Hertfordshire Al5 3Bt
Single storey rear extension with solar panels and rooflights to the roof.
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5/2026/1019 Decided
6 Beesonend Cottages Beesonend Lane Harpenden Hertfordshire Al5 2Aa
Two-storey rear and single-storey rear and side extensions along with internal alterations (following refusal of planning application ref no 5/2025/1787).
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TP/2026/0263 Granted
6 Lodge Gardens Harpenden Hertfordshire Al5 4Je
Oak - Reduce back vertical growth by 2-3m and crown clean Mixed Specie - Reduce back lateral growth to the fence Small Sycamore (under 75mm at breast height) - Fell
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5/2026/1021 Granted
Sir John Lawes School Manland Way Harpenden Hertfordshire Al5 4Qp
Discharge of Condition 3 (materials) of planning permission 5/2025/1978 dated 25/02/2026 for Proposed development of a single storey teaching block with music practice rooms, performance studio and classrooms including extension to existing car park and l
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5/2026/1016 Decided
46 Chesterton Avenue Harpenden Hertfordshire Al5 5Su
New porch and conservatory
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TP/2026/0261 Granted
Old Gates West Common Harpenden Hertfordshire Al5 2Jw
The first is a conifer which stands by the field hedge line at the southern end of our garden. We planted this conifer since we moved here, and it has proved to be rather plain. We think it would enhance the area to have a better more indigenous tree ther
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5/2026/1009 Decided
54 Amenbury Lane Harpenden Hertfordshire Al5 2Dq
Demolition of dwelling
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TP/2026/0257 Granted
11 The Warren Harpenden Hertfordshire Al5 2Nh
TPO1773 (T1) Oak - Reduce the two lower branches by three to five metres. Reduce remainder of tree by 2 metres.
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5/2026/1003 Decided
5 Rosebery Avenue Harpenden Hertfordshire Al5 2Qt
Proposed new 5-bed dwelling within existing residential plot with private off-street parking located to the front of site, refuse and recycling allocation, and private external amenity areas and new vehicle crossover