Planning application
20 Sherrock Gardens London NW4 4JJ
Works: Extension Loft or dormer Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights. 2no. single storey rear extensions with 1no. rooflight with new patio area. Front porch extension. Changes to fenestration at side and rear elevation including replacing window with a door. Erection of rear outbuilding. (AMENDED DESCRIPTION)
As published by the council, reference 25/4341/192
Application record
- Reference
- 25/4341/192
- Type
- Proposed Lawful Development Certificate
- Status
- Pending Consideration
- Received
- 30 Oct 2025
- Validated
- 30 Oct 2025
- Ward
- Hendon
- Postcode
- NW4 4JJ
Timeline
Dates from the published record
-
30 Oct 2025
Received by Barnet
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 25 December 2025, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Barnet took a median of 43 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice registered in London
26 applications on PlanIndex · across 3 councils
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
22 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat happens while it is decided
The process from here
This application is with Barnet 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 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
-
32 Newark Way London NW4 4JL
Roof extension involving hip to gable, rear dormer window and 2no front facing rooflights
Decided Lawful development Extension Loft or dormer +1 20 docs -
216 Watford Way London NW4 4UA
77% historically approved · decision due ~12 Jun
First floor rear extension with pitched roof. Roof extension involving hip to gable, rear dormer window and 3no. front facing rooflights
Awaiting decision Householder Extension Loft or dormer +1 9 docsDomestic -
Small domestic
-
40 Selborne Gardens London NW4 4SJ
Single storey rear extension with a proposed depth of 6m, maximum height of 3m and eaves height of 3m.
Granted Prior approval Extension 9 docsSmall domestic -
32 Selborne Gardens London NW4 4SJ
79% historically approved · decision due ~26 Nov
Use as rear granny annexe
Awaiting decision Lawful development 5 docs -
Rear Of 69 Greyhound Hill London NW4 4JN
61% historically approved · decision due ~13 May
Demolition of the existing outbuilding and erection of a single storey detached dwelling with green roof. Associated landscaping and cycle storage
Awaiting decision Full applications New dwelling Demolition 4 docsSmall domestic
Other lawful development applications
In Barnet
-
26/2679/192 Decided
21 Myddelton Park London N20 0JH
Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).
-
26/1907/191 Decided
8 Golders Manor Drive London NW11 9HT
Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)
-
26/2059/192 Decided
Low Ridge Rowley Lane Barnet EN5 3HS
Erection of a rear outbuilding
-
26/2066/192 Decided
355 Hendon Way London NW4 3NB
Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)
-
26/1663/192 Decided
152 Deans Lane Edgware HA8 9NT
Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)