Planning application
5/2026/1277
52 Napsbury Avenue London Colney Hertfordshire Al2 1Ls
Proposal
Certificate of Lawfulness (proposed) - The proposed development comprises building operations associated with the loft conversion of the existing roof space to provide additional habitable accommodation. The works include the construction of a rear dormer
As published by the council, reference 5/2026/1277
Timeline
Dates from the published record
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1 Jul 2026
Received by St Albans
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2 Jul 2026
Validated
Checked as complete and ready for consideration.
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24 Jul 2026
Added to PlanIndex
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2 Aug 2026
Status changed to Under Consideration
Previously Under Consultation.
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 lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
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5/2017/2508 Granted
38 Peters Avenue London Colney Hertfordshire Al2 1Nq
Discharge of Condition 3 (scheme for the insulation of the ground floor and upper floors units against the transmission of noise and vibration) of planning permission 5/2017/0383 dated 28/04/2017 for Conversion of existing dwelling to ground floor Class C
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TP/2026/0192 Granted
1 Lime Tree Court London Colney Hertfordshire Al2 1Ul
G2 in plan. Cluster of Sycamores. Remove approx 12 stems of the Sycamores closest to the buildings & from below the crown of the mature Pine. G3 in plan. Sycamore Remove approx 12 stems of Sycamore Closest to buildings.
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TP/2026/0289 Decided
22 Boyes Crescent London Colney Hertfordshire Al2 1Ub
T1 Robinia rear garden to fell to ground level. It has outgrown its alloted space and has thorny growth creating management and safety issues in a small domestic garden. They want to replant with a more suitable slower growing tree.
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TP/2017/0481 Granted
53 Azalea Close London Colney Al2 1Ua
Reduce crown of Cherry by 2.5m & to inner edge of pavement. Remove up to 3 heavy limbs from Birch tree. Reduce 1 year's growth from Cherry.
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5/2017/2584 Decided
61 Cotlandswick London Colney Hertfordshire Al2 1Eh
Erection of a detached two storey, two bedroom dwelling unit, single storey rear extension to existing dwelling, associated parking and landscaping
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TP/2026/0288 Decided
96 Norris Close London Colney Hertfordshire Al2 1Ur
T1 Lime tree in rear garden to reduce by 50%. The tree is huge in a small back garden and they want more light and less mess.
Other lawful development applications
In St Albans
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5/2026/1430 Decided
42 Holywell Hill St Albans Hertfordshire Al1 1Bx
Certificate of Lawfulness (proposed works to a Listed Building) - Replace master bathroom suite on 1st floor of property. Modern bathroom to be replaced with new suite, including new shower cubicle. It will use existing water and waste routes , and tiling
-
5/2026/0901 Granted
37 Saxon Road Wheathampstead Hertfordshire Al4 8Nz
Certificate of Lawfulness (proposed) - Timber framed garden room to be built on ground screw foundation. Dimensions 3m x 4.2 & under 2.5m in height. This will be 1.4m distance from boundary to neighbour. This will be situation at the end of the garden
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5/2026/1399 Decided
10 Birchwood Way Park Street St Albans Hertfordshire Al2 2Sg
Certificate of Lawfulness (proposed) - Loft conversion with rear dormer and 3No. roof lights to front elevation
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5/2026/1031 Granted
5 Flamsteadbury Lane Redbourn Hertfordshire Al3 7Dh
Certificate of Lawfulness (proposed) - Construction of single storey rear 3m extension, maximum eaves height 3m and maximum ridge height 4m
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5/2026/1035 Refused
30 Culver Road St Albans Hertfordshire Al1 4Ed
Certificate of Lawfulness (proposed) - Loft conversion with rear dormer and two velux to front