Postcode district
Planning applications in AL5
PlanIndex holds 1,141 planning applications with AL5 postcodes, the earliest from 2016, the newest from October 2026. 90% of clear-cut decisions were approvals.
Applications in AL5
Newest first · page 1 of 23
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TP/2026/0506 Awaiting decision
Old Bell 177 Luton Road Harpenden Hertfordshire Al5 3Bn
5 x Oaks to lift to around 3m above ground level, remove deadwood greater than 40mm in diameter. Lift canopies on all Oaks to allow better view of area due to safety concerns & recent damage
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TP/2026/0509 Awaiting decision
36 Park Avenue North Harpenden Hertfordshire Al5 2Ed
G1 - 5 lime trees at the front of the house to raise the canopy to approx 5 mentres and remove epicormic growth. This work is all general maintenasnce and to keep mtrees healthy and under control
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TP/2026/0505 Awaiting decision
26 Leyton Road Harpenden Hertfordshire Al5 2Jb
T1 - Ash - Cut back lateral growth overhanging shed T2 - Beech - Cut back lateral growth towards house. These tree works are required to maintain the size and health of the trees and to provide more light into the garden, also to stop potential future d
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TP/2026/0499 Awaiting decision
9 Tuffnells Way Harpenden Hertfordshire Al5 3Hj
TPO 1510. English Oak T1 Reduce Crown by circa 4m Reduce overhanging branches To reduce level of shading. Help other plants grow and establish.
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TP/2026/0494 Awaiting decision
17 Rothamsted Avenue Harpenden Hertfordshire Al5 2Dn
T2 Beech - Crown reduction by 2-3m approx (primary cuts) and thin canopy by 15-20% G1 Cypress - Fell T3 Silver Birch - Crown reduction by 2-3m approx (primary cuts)
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TP/2026/0488 Awaiting decision
Woodlands East Common Harpenden Hertfordshire Al5 1Dg
T1 Oak (fungus Chicken of the Woods - Laetiporus) - Crown reduction by 4-6m approx and thin - precautionary work to prevent stems failing T2 Holly - Crown reduction by 1.5m and shape where required
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TP/2026/0474 Awaiting decision
12 Bowers Way Harpenden Hertfordshire Al5 4Ew
Dead Ash tree at the rear on the left side of the back garden.Fell to ground level Diseased Acacia tree, Fell to ground level and grind out stump.
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TP/2026/0477 Awaiting decision
11A Salisbury Avenue Harpenden Hertfordshire Al5 2Qf
11A Salisbury Avenue Harpenden Hertfordshire Al5 2Qf T1 - 1 x Overgrown Cotoneaster / Himalayan tree.Pollard to height of first branch break.
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TP/2026/0475 Awaiting decision
47 Aplins Close Harpenden Hertfordshire Al5 2Pz
G1 2 Silver Birch - Crown reduction by 2-2.5m approx and crown lift to the legal limit over highway Hawthorn - Crown reduction by 1-2m (primary pruning points)
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TP/2026/0490 Awaiting decision
5 Townsend Lane Harpenden Hertfordshire Al5 2Py
T1 Beech - Crown reduction by up to 2m approx, give 4m clearance from building and crown lift over the highway to the legal limit 5.2m
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TP/2026/0493 Awaiting decision
19 West Common Grove Harpenden Hertfordshire Al5 2At
Cypress - Reduce by about 30% in hiehgt and laterally
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5/2026/1702 Awaiting decision
2 Victoria Road Harpenden Hertfordshire Al5 4Ea
Alterations to the fenestration.
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TP/2026/0465 Awaiting decision
45 Granby Avenue Harpenden Hertfordshire Al5 5Qp
T1 Beech - Crown lift over highway to height of 6m to prevent vehicle strike and crown clean only
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TP/2026/0466 Awaiting decision
12 Grange Court Road Harpenden Hertfordshire Al5 1By
Weeping Willow, rear garden. Pollard back to the original pollard points, as marked on photo. Due to excessive lean and lack of light.
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5/2026/1688 Awaiting decision
Turners Hall Farm Annables Lane Kinsbourne Green Harpenden Hertfordshire Al5 3Pt
Certificate of Lawfulness (proposed) - Single storey side extension to existing dwelling house as shown on attached drawings
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TP/2026/0459 Awaiting decision
2A Cornwall Road Harpenden Hertfordshire Al5 4Th
T1 Maple - Crown reduction by 1/1.5m approx (previous pruning pionts)
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TP/2026/0458 Awaiting decision
7 Hammondswick Harpenden Hertfordshire Al5 2Nr
G1 Mixed Tree Growth - Reduce back over long laterals over highway to achieve legal requirement of 5.2m and 2.4m over footpath
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5/2026/1684 Awaiting decision
75 Station Road Harpenden Hertfordshire Al5 4Rl
Erection of a single-storey detached garden room to the rear of the garden, for incidental use as a hobby room
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TP/2026/0455 Awaiting decision
7 Salisbury Avenue Harpenden Hertfordshire Al5 2Qq
Silve birch - felling trees 1, 2, 3, and 5 on safety grounds in significant decline
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TP/2026/0452 Decided
7 Crabtree Lane Harpenden Hertfordshire Al5 5Ta
T2 Scots Pine Fell dead tree with tracked MEWP. 5 DAY REQUEST
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TP/2026/0451 Awaiting decision
Topstreet Farmhouse 28 Crabtree Lane Harpenden Hertfordshire Al5 5Nu
T1 Beech - Crown reduction by 3-4m approx and crown thin by 15-20% The tree has perviously been managed with a similar crown reduction in the past to contain shape and improve light
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5/2026/1665 Awaiting decision
12 Jameson Road Harpenden Hertfordshire Al5 4Hq
Two and a half storey side extension, single storey front and rear extensions, internal alterations and demolition of existing double garage within rear garden
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TP/2026/0443 Awaiting decision
15 Stewart Road Harpenden Hertfordshire Al5 4Qe
T2 Willow - Crown reduction by 3-4m approx & crown clean G3 3 Cypress (adjacent to the Willow) - Reduction by 2-4m approx T5 Holly - Fell (stump to remain) T1 Sycamore - Pollard T4 Purple Leaf Plum - Reduce back lateral growth by 1-2m to clear property
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5/2026/1650 Awaiting decision
Turners Hall Farm Annables Lane Kinsbourne Green Harpenden Hertfordshire Al5 3Pt
Prior Notification - Single storey rear extension 3.95m in height x 8m in depth with 3.95m height to eaves
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5/2026/1657 Awaiting decision
4 Collens Road Harpenden Hertfordshire Al5 2Aj
Certificate of Lawfulness (proposed) - Single Storey Rear Extension
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TP/2026/0442 Awaiting decision
29 Southdown Road Harpenden Hertfordshire Al5 1Pf
T1 Silver Birch (poor condition with extensive dieback in upper crown with birch polypore) - Fell
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TP/2026/0441 Awaiting decision
38 Park Avenue North Harpenden Hertfordshire Al5 2Ed
T1 & T2 Lime trees x 2 to reduce and reshape to 25-30% approx to previous pruning points 2 metres off teh canopy. T3 Lime tree with brace to reduce in height bu approx 2-3 metres below the previous pruning points. This is general maintenance work to keep
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TP/2026/0440 Awaiting decision
The Barn House 15A Southdown Road Harpenden Hertfordshire Al5 1Pd
T1 Acacia - Crown reduction by 2-3m approx to prevent stem failure due to cavities at base.
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TP/2026/0437 Awaiting decision
28 Park Avenue North Harpenden Hertfordshire Al5 2Ed
2 Limes - Pollard (back to previous pollard pionts)
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5/2026/1631 Awaiting decision
3 Ashcroft Close Harpenden Hertfordshire Al5 1Jj
Single storey side and rear extensions, loft conversion incorporating a raised roof, rooflights and solar panels, replacement windows, alterations to external openings, roof and fenestration, and alterations to external materials
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5/2026/1625 Awaiting decision
72 Crabtree Lane Harpenden Hertfordshire Al5 5Ns
Rear orangery
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5/2026/1628 Awaiting decision
15 Miley Close Harpenden Hertfordshire Al5 3Ds
Single storey rear extension
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TP/2026/0435 Awaiting decision
29 Station Road Harpenden Hertfordshire Al5 4Xb
T1 Sequoia - Crown reduction by 3m approx and crown thin by 10%, reduce disproportionate branches further to balance crown and crown clean. Clear growth over highway to 5.2m
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5/2026/1619 Awaiting decision
Brachefield Redbourn Lane Hatching Green Harpenden Hertfordshire Al5 2Au
Discharge of Biodiversity Net Gain Condition 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 and landscaping
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5/2026/1618 Awaiting decision
73 Cravells Road Harpenden Hertfordshire Al5 1Bh
Single storey rear extension
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5/2026/1621 Awaiting decision
9 Ashley Gardens Harpenden Hertfordshire Al5 3En
Certificate of Lawfulness (proposed) - Erection of a fence within boundary of the property
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TP/2026/0429 Awaiting decision
39 Leyton Road Harpenden Hertfordshire Al5 2Jb
T1 Eucalyptus tree at rear to reduce crown by approx 50% (approx 4m) T5 Gleditsia growing close to rear of house to reduce crown approx as previously (1-2m all over) T6 Yew growing close to Gleditsia at rear to reduce height by approx 3m to approx gutter
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5/2026/1613 Awaiting decision
10 Newton Close Harpenden Hertfordshire Al5 1Sp
Certificate of Lawfulness (proposed) - Proposed loft conversion with addition of rear box dormer
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5/2026/1604 Awaiting decision
6 The Mews Breadcroft Lane Harpenden Hertfordshire Al5 4Tf
Garage conversion with new window
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5/2026/1599 Awaiting decision
12 Leyton Green Harpenden Hertfordshire Al5 2Tg
Installation of AC condenser unit in acoustic enclosure
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5/2026/1597 Awaiting decision
7 Hales Meadow Harpenden Hertfordshire Al5 4Jb
Installation of air conditioning unit on side wall
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5/2026/1598 Awaiting decision
39 Grove Avenue Harpenden Hertfordshire Al5 1Ey
Single storey side extension and alterations to fenestration
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TP/2026/0423 Awaiting decision
Cottage 3 The Bourne Salisbury Avenue Harpenden Hertfordshire Al5 2Ps
Group of Hornbeam (x3) to reduce by approximately 1.5m height and width, making sure to cut back beyond neighbouring driveway and to clear the roadway. Cut back to clear bin store by 1m
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TP/2026/0421 Awaiting decision
25 Moreton Avenue Harpenden Hertfordshire Al5 2Eu
Cherry tree - left hand corner of our front garden. Reduce the crown by 30% and also thin out parts of the tree.
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5/2026/1583 Awaiting decision
42 Luton Road Harpenden Hertfordshire Al5 2Uj
3m deep, single storey rear extension plus introduction of side door to the existing garage
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TP/2026/0418 Awaiting decision
140 Cravells Road Harpenden Hertfordshire Al5 1Bq
Pittosporum rear garden - Fell.
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TP/2026/0416 Awaiting decision
6 Maple Cottages West Common Harpenden Hertfordshire Al5 2As
Cherry Tree reduce back laterals by 1.5 meter approx over hanging neighbours garden number 5. All work carried out to BS3998:2010
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TP/2026/0412 Awaiting decision
26 Tennyson Road Harpenden Hertfordshire Al5 4Bb
Fell two no. (Tree No.1 and Tree No. 2 on supplied plan) hawthorn trees which are adjacent to the southern boundary fence.
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TP/2026/0409 Awaiting decision
Plovers Redbourn Lane Hatching Green Harpenden Hertfordshire Al5 2Jy
1 x Multi stem Conifer tree (T1 - on sketch plan) in the front garden / driveway entrance area to be removed. 1 x dead Twisted Willow (T2 - on sketch plan) in the rear garden to be removed.
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TP/2026/0407 Awaiting decision
5 Oakfield Road Harpenden Hertfordshire Al5 2Nf
1 x Apple tree in the rear garden (T1 - on sketch plan) to be reduced back to historic pruning points by around 2 metres. 1 x Apple tree in the rear garden (T2 - on sketch plan) to be reduced lightly by up to 1 metre in places.
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