Planning application
P2026/1581/LBC
5 Mountfort Crescent, London, N1 1JW
Proposal
Erection of a replacement two-storey side extension, replacement of existing rear conservatory with bay window, replacement of existing roof lantern, removal of existing non-original roof timber enclosure and water tanks on roof, upgrading of single glazed windows with double glazed windows, installation of air source heat pump with enclosure in rear garden, along with other associated internal alterations [Full planning application P2026/1579/FUL also submitted]
As published by the council, reference P2026/1581/LBC
Timeline
Dates from the published record
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17 Jun 2026
Received by Islington
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24 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Islington for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About heritage and listed buildings applications
How this application type works
Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.
More on heritage and listed buildings applications in our guide
Nearby applications
Within 500 metres
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P2023/3418/LBC Withdrawn
5 Mountfort Crescent, London, N1 1JW
Demolition of the existing conservatory and erection of a replacement single-storey rear extension, replacement of side lean-to with a single-storey side extension, excavation and enlargement of the basement including the formation of a side and rear lightwell and installation of a Ground Source Heat Pump, re-roofing and installation of a triple glazed roof lantern and removal of rooftop water tank, replacement of windows and doors, and associated internal and external alterations (Full Planning Application ref. P2023/3381/FUL also submitted).
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P2024/3431/LBC Withdrawn
5 Mountfort Crescent, London, N1 1JW
Erection of a single-storey rear extension to replace existing conservatory, erection of a single-storey side extension to replace existing lean-to, replacement of windows and insertion of new window openings, installation of new roof covering and a roof lantern, excavation of existing basement and installation of a ground source heat pump with associated internal and external alterations including replacement of mechanical, electrical and plumbing services. (A Planning Application ref. P2024/3430/FUL has also been submitted).
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P2024/3430/FUL Withdrawn
5 Mountfort Crescent, London, N1 1JW
Erection of a single-storey rear extension to replace existing conservatory, erection of a single-storey side extension to replace existing lean-to, replacement of windows and insertion of new window openings, installation of new roof covering and a roof lantern, excavation of existing basement and installation of a ground source heat pump with associated internal and external alterations including replacement of mechanical, electrical and plumbing services. (An application for Listed building Consent ref. P2024/3431/LBC has also been submitted).
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P2026/1579/FUL Awaiting decision
5 Mountfort Crescent, London, N1 1JW
Erection of a replacement two-storey side extension, replacement of existing rear conservatory with bay window, replacement of existing roof lantern, removal of existing non-original roof timber enclosure and water tanks on roof, upgrading of single glazed windows with double glazed windows, installation of air source heat pump with enclosure in rear garden, along with other associated internal alterations (Listed Building Consent P2026/1581/LBC also submitted)
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P2026/1797/TRE Awaiting decision
4, Mountfort Crescent, London, N1 1JW
T2 Pear, cut back by 2m from neighbour's garden in Belitha Villas. T3 Lime, reduce back to previous pruning points, approx 2m, from neighbour's garden in Belitha Villas. Both works are cyclical works.
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P2026/1730/LBC Awaiting decision
6, Mountfort Crescent, London, N1 1JW
Alter roofing as agreed by Conservation Officer Sean McEntee 9 February 2026. Revise glazing changes approved 6 February 2025, as agreed by Conservation Officer Sean McEntee 13 April 2026.
Other heritage and listed buildings applications
In Islington
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P2026/1490/LBC Granted
15 Barnsbury Street, London, N1 1PW
Replacement of internal flat entrance doors, architraves and fanlights, installation of new fire alarm system, and replacement electrical cupboard.
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P2026/1838/COL Awaiting decision
18 - 20 St John Street, London, EC1M 4AY
Certificate of lawfulness for a proposed works to a listed building.
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P2026/1623/LBC Granted
16 Copenhagen Street, London
Replacement of internal flat entrance doors, architraves and fanlights, installation of new fire alarm system, and replacement of electrical cupboard.
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P2026/1625/LBC Granted
36 Barnsbury Road, London
Replacement of internal flat entrance doors, architraves and fanlights, installation of new fire alarm system, and replacement of electrical cupboard.
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P2026/1493/LBC Granted
40 Barnsbury Road, London, N1 0HD
Replacement of internal flat entrance doors, architraves and fanlights, installation of new fire alarm system, and replacement of electrical cupboard.