Postcode district
Planning applications in AL5
Page 2 of 23, newest first. Back to the AL5 overview.
Applications in AL5
Newest first · page 2 of 23
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TP/2026/0410 Awaiting decision
43 Cowper Road Harpenden Hertfordshire Al5 5Nj
Rear left corner of the garden. Holly tree. Remove tree completely.
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5/2026/1589 Awaiting decision
The Three Horseshoes East Common Harpenden Hertfordshire Al5 1Aw
Listed Building consent - Partial demolition, extension and alteration of existing dwelling, and demolition of existing garage and erection of new annex on its footprint
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5/2026/1574 Awaiting decision
The Three Horseshoes East Common Harpenden Hertfordshire Al5 1Aw
Partial demolition, extension and alteration of existing dwelling, and demolition of existing garage and erection of new annex on its footprint
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TP/2026/0404 Awaiting decision
9 Kirkwick Avenue Harpenden Hertfordshire Al5 2Qu
Reduce 3 x Lawson Cypress, 1 x leylandii and 3 x Silver Birche by up to 4 metres each. Reduce overhanging branches from the Sycamore Tree which overhanging garden.
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5/2026/1564 Awaiting decision
1 Poynings Close Harpenden Hertfordshire Al5 1Jd
Two-storey and part single-storey rear extensions, side extensions, a two-storey front extension incorporating a projecting glazed gable feature, and new roof by increasing the ridge level and rooms within the roof space
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CB/26/02619/AG Granted
Thrales End Farm, Thrales End Lane, Harpenden, AL5 3NS
Prior Approval for the erection, extension or alterations of a building for Agricultural or Forestry Use. Erection of a general purpose agricultural storage building
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5/2026/1560 Awaiting decision
130A Southdown Road Harpenden Hertfordshire Al5 1Pu
Conversion of an external covered colonnade to office space for a community building including new windows and doors to existing colonnade openings and one new window
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TP/2026/0402 Granted
28 West Common Way Harpenden Hertfordshire Al5 2Lg
T1 - oak tree reduce north east side of Oak tree by 3m. This tree has been heavily cut on the opposite side of the tree leaving the tree hugely unbalanced.
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5/2026/1558 Granted
31 Highfield Avenue Harpenden Hertfordshire Al5 5Ub
Certificate of Lawfulness ( Proposed) - Proposed rear single-storey extension, side single-storey extension and removal of rear chimney stack
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TP/2026/0400 Awaiting decision
6A High Elms Harpenden Hertfordshire Al5 2Ju
Lawson Cypress - to be removed - the tree appears to be dead / dying - there are approximately 10% green leaves on it which has been the same for at least a year - the rest of the leave are brown - I have attached a plan and photos
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5/2026/1546 Awaiting decision
Rothamsted Manor Rothamsted Estate Harpenden Hertfordshire Al5 2Be
Variation to regularise Condition 5 (travel plan) of planning permission 5/2017/3632 dated 25/04/2018 for Siting of marquee within walled garden for wedding receptions, corporate, charity, community and private events, with associated walkway, landscaping, parking and ancillary services including toilets and catering enclosure, use of ground floor of Manor building for wedding receptions, corporate, charity, community and private events and bridal party accommodation
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5/2026/1541 Awaiting decision
13 Haslingden Close Harpenden Hertfordshire Al5 3Ew
Part single and part first floor front extension, first floor rear extension, alterations to openings, plus render finish to exiting elevations
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5/2026/1538 Awaiting decision
96 Cowper Road Harpenden Hertfordshire Al5 5Nh
Variation of Condition 3 (external materials) to change to render finish of planning permission 5/2025/2083 dated 06/01/2026 for First floor front and side extensions, single storey rear extension and roof alterations to the front elevation
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5/2026/1527 Granted
11B Douglas Road Harpenden Hertfordshire Al5 2En
Discharge of Condition 5 (tree protection plan and arboricultural method statement) of planning permission 5/2025/0568 dated 06/02/2026 for Two storey front extension, single storey front and rear extensions with roof lights, solar panels to rear roof slo
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TP/2026/0389 Granted
21 Eastmoor Park Harpenden Hertfordshire Al5 1Bn
T9 Oak (Rear of property) Carry out a height and lateral reduction pruning back to previous historical topping points - between 5 and 9 metres. Carry out selective pruning of the epicormic growth within the lower crown. Reason: Part of a cyclical maintena
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5/2026/1516 Awaiting decision
5 Bloomfield Road Harpenden Hertfordshire Al5 4Dd
Proposed side and rear extension, including extension of roof and addition of dormer
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5/2026/1514 Awaiting decision
8 The Cleave Harpenden Hertfordshire Al5 5Sj
Demolition of existing garage and carport. Side and rear extension to dwelling
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TP/2026/0388 Granted
37 Granby Avenue Harpenden Hertfordshire Al5 5Qp
T1 (TPO) Beech - Crown reduction by 3-4m approx, crown lift to the legal requirement on highway to 5.4m and crown clean to manage tree in its proximity to the highway and small garden
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TP/2026/0386 Granted
25 Rothamsted Avenue Harpenden Hertfordshire Al5 2Dn
Conifer (front garden) - Fell, this tree is now 55 foot high and is 20 feet in distance from the house (consent given historically to reduce by 30%)
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5/2026/1494 Awaiting decision
Redwood House 3 Broad Oaks Close Redbourn Lane Hatching Green Harpenden Al5 2Pr
Variation of Condition 2 (approved plans) amendments to the rear elevation window of planning permission 5/2026/0230 dated 05/05/2026 for Demolition of the existing raised brick structure on right elevation and replace it with a two-storey side extension,
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5/2026/1490 Awaiting decision
14 Park Avenue South Harpenden Hertfordshire Al5 2Ea
Construction of replacement dwelling with habitable roof accommodation, outbuildings and swimming pool, alterations to vehicular access and driveway, and associated changes to the garden and landscaping (alternative scheme to extant permission 5/2022/2666
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5/2026/1472 Awaiting decision
80 Park Rise Harpenden Hertfordshire Al5 3Al
Two storey side/rear extension, construction of two flat roof dormer window to front elevation and rooflights
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5/2026/1471 Awaiting decision
80 Park Rise Harpenden Hertfordshire Al5 3Al
Single storey side/rear extension, construction of two flat roof dormer window to front elevation and rooflights
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5/2026/1458 Awaiting decision
29 Noke Shot Harpenden Hertfordshire Al5 5Hs
Demolition of existing garage and shed and erection of a pair of self-build, semi-detached dwellings
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TP/2026/0382 Awaiting decision
Wedgewood Hyde East Common Harpenden Al5 1Dd
Conifer Tree X1 Approx 16M high remove
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5/2026/1464 Awaiting decision
26 Cowper Road Harpenden Hertfordshire Al5 5Ng
Proposed extensions and alterations to 26 Cowper Road, comprising a first floor extension above the existing garage and utility room, including the conversion of the existing garage to provide an enlarged entrance hall, WC and storage, involving the remov
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5/2026/1454 Awaiting decision
10A Park Avenue South Harpenden Hertfordshire Al5 2Ea
Erection of front boundary wall with piers, metal railings, new driveway and pedestrian gates
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5/2026/1456 Awaiting decision
17 Bowers Way Harpenden Hertfordshire Al5 4Ep
Loft Conversion Including Rear Hip To Gable Extension Plus Addition Of New Dormers & Rooflights
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TP/2026/0380 Granted
23A Douglas Road Harpenden Hertfordshire Al5 2Ep
(Front garden) Tree 1 Fell to ground level dead Lime tree. (Rear garden) Tree 2 Reduce crown by 50% on Sycamore tree as it's causing excessive shading.
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5/2026/1451 Awaiting decision
70 Meadway Harpenden Hertfordshire Al5 1Jq
Alteration to roof and increase in ridge height, construction of 3 x front roof lights, 2 x flat roof rear dormers and 1 x rear roof light to facilitate the conversion of the loft space to habitable accommodation
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TP/2026/0377 Granted
The Vinery 6 Salisbury Avenue Harpenden Hertfordshire Al5 2Qg
Ash (T1) - Crown reduction by 20% (T1) Silver Birch (T2) - fell due to poor quality, Ash (T3) Fell (renewal of previously approved application TP/2021/0300). Seasonal trimming of all boundary hedges.
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TP/2026/0376 Granted
19 West Common Grove Harpenden Hertfordshire Al5 2At
A large maple tree requires a reduction of c 30%
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TP/2026/0375 Granted
2C Cornwall Road Harpenden Hertfordshire Al5 4Th
Purple Plum x2 - Fell, trees in the front garden in significant decline
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TP/2026/0374 Granted
27 Leyton Road Harpenden Hertfordshire Al5 2Jb
T5 - Sycamore to reduce the crown by 50% to old points to ensure the health of the tree and give light to the undergrowth and allow bio-diversity under the canopy.
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TP/2026/0373 Granted
10 Moreton Avenue Harpenden Hertfordshire Al5 2Et
T1 Prunus Cerasifera Reduce height and width by 30%.
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TP/2026/0370 Decided
3 The Spinney Roundwood Park Harpenden Hertfordshire Al5 3Az
T37 Beech tree needs to be cut down and removed, its presents danger to life/property. It is infected with Gandaderma fungus and is rotten in base.
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TP/2026/0369 Granted
Haddon Court Milton Road Harpenden Hertfordshire Al5 5Na
Refer to report for full details of works to the following species Limes, Beech, Horse chestnut, Mongolian lime, Common lime, Hornbeam, Crab apple
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TP/2026/0368 Granted
78 Luton Road Harpenden Hertfordshire Al5 2Ur
(T1) Norway Maple , Re-Pollard to previous pollard points Tree is adjacent property and starting to encroach the building
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TP/2026/0367 Granted
5 Hanover Grange Harpenden Hertfordshire Al5 3Bd
Hornbeam x 5 reduce back to previous points, Oak Repeat crown reduction reducing back to the previous pruning points. Historically approved under Planning Application TP/2016/0331.
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5/2026/1416 Awaiting decision
Brachefield Redbourn Lane Hatching Green Harpenden Hertfordshire Al5 2Au
Discharge of Conditions 6 (hard and soft landscaping) and 7 (construction management plan) of planning permission 5/2026/0274 dated 01/06/2026 for Demolition of existing dwelling and erection of 3 dwellings with associated access, parking, amenity space a
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5/2026/1418 Awaiting decision
35 Overstone Road Harpenden Hertfordshire Al5 5Pn
Proposed Single Storey Rear Extension
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5/2026/1413 Refused
47 Westfield Road Harpenden Hertfordshire Al5 4Hr
Prior Notification - Single storey rear extension 3.7m in height x 3.04m in depth with 2.8m height to eaves
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TP/2026/0365 Decided
10 Medlows Harpenden Hertfordshire Al5 3Ay
T1-Oak tree to reduce to leave twin-stemmed habitat poles at 5 metres as the tree is in serious decline.
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TP/2026/0364 Granted
47 Park Avenue North Harpenden Hertfordshire Al5 2Ee
G1 - Pines x 3 - Remove to ground level see application for details. T3 - Lime x 1 Reduce the canopy by 1-2 metres to previous points.
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5/2026/1414 Refused
6 High Street Harpenden Hertfordshire Al5 2Tb
Prior Approval - Retention of Commercial premises at ground floor level. Change of Use from Class E (Commercial, Business and Service) into Class C3 (Dwellinghouses)
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TP/2026/0359 Granted
10 Devonshire Road Harpenden Hertfordshire Al5 4Tj
G1-Beech hedges-Reduce in height to 2 metres to maintain size and shape. G2-Conifer hedges-Reduce in height to 2 metres to maintain size and shape. T1-Elm-Lift crown to 2 metres to maintain size. T2-Willow-Remove damaged branches for safety T3-Ash-Fell to
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TP/2026/0357 Granted
9 Woodlands Harpenden Hertfordshire Al5 3By
T1 Hornbeam - Fell (not suitable specie to close to the house)
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TP/2026/0356 Granted
17 Douglas Road Harpenden Hertfordshire Al5 2En
G1 Hazel & Purple Leaf Plum - Crown reduction by 1-2m approx (primary cuts) G2 Lime & Portuguese Laurel - Pollard T3 Horse Chestnut - Crown reduction by 2-3m approx (back to previous pruning pionts)
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5/2026/1392 Awaiting decision
1 Greyfriars Lane Harpenden Hertfordshire Al5 2Qj
Variation of Condition 4 (obscure glazing & non-opening) to allow standard glazing in the rooflight on the eastern elevation of planning permission 5/2021/1155 dated 24/06/2021 for Two storey dwelling with habitable roof space and double garage following
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5/2026/1402 Awaiting decision
23 Kirkdale Road Harpenden Hertfordshire Al5 2Pt
Two storey rear and side extension with basement, single storey side, front and rear extension, new porch roof, rebuilding outbuilding gym