Planning application
5/2026/1375
20 Hartwell Gardens Harpenden Hertfordshire Al5 2Rw
Proposal
Proposed first floor side extension with new solar panels, new front two-storey extension, part external cladding, replacement rear bay window, along with internal and external alterations and replacement windows
As published by the council, reference 5/2026/1375
Timeline
Dates from the published record
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17 Jul 2026
Received by St Albans
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20 Jul 2026
Validated
Checked as complete and ready for consideration.
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2 Aug 2026
Added to PlanIndex
After the decision
The process from here
The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.
If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.
About householder applications
How this application type works
Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.
Nearby applications
Within 500 metres
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TP/2017/0455 Granted
24 Hartwell Gardens Harpenden Al5 2Rw
Reduce crown of Lime tree in rear garden back 2-3m below previous reduction points. Remove Diseased limb. Reduce Holly hedge by 1m. Reason - Lime has suffered limb failure. Holly hedge - To improve appearance - previously reduced. All in area A5.
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5/2026/0957 Decided
53 Park Avenue North Harpenden Hertfordshire Al5 2Ee
Single-storey front and side extension to provide additional residential accommodation, in the form of a private wellness / exercise space, adjusted vehicle entrance and new dropped kerb
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TP/2026/0364 Decided
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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5/2026/0469 Decided
68 Townsend Lane Harpenden Hertfordshire Al5 2Rg
Single storey side and rear extensions with rooflights, loft conversion with front and rear dormer windows and rooflights, alterations to openings
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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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5/2026/1045 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
Other householder applications
In St Albans
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5/2026/0574 Decided
39 St Annes Road London Colney Hertfordshire Al2 1Lq
Porch extension and pitched roof above. Garage conversion
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5/2026/0886 Decided
17 Tillage Close Tyttenhanger St Albans Hertfordshire Al4 0Fn
Variation of Condition 2 (approved plans) to marginally increase the width of the garage as approved of planning permission 5/2025/0510 dated 23/05/2025 for Proposed detached garage
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5/2026/0825 Decided
282 London Road St Albans Hertfordshire Al1 1Hy
Retention of a Glazed link to house and gym
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5/2026/0821 Decided
3 Lindley Court Lindley Close Harpenden Hertfordshire Al5 4Ht
Single storey front and rear extensions
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5/2026/1372 Decided
8 Miley Close Harpenden Hertfordshire Al5 3Ds
Proposed garage conversion and internal alterations in order to create a new habitable Living Room with new side Store