Planning application
120 Hillside Gardens Barnet EN5 2NL
Works: Extension Loft or dormer Demolition Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Roof extension involving hip to gable with rear dormer, juliette balcony, 3no. front facing rooflights, new side gable window following the demolition of the existing rear and side dormers. Conversion of garage into habitable room, insertion of window to replace existing front garage door
As published by the council, reference 26/1762/192
Application record
- Reference
- 26/1762/192
- Type
- Proposed Lawful Development Certificate
- Status
- Lawful
- Decision
- Granted As published: Lawful
- Received
- 11 May 2026
- Validated
- 12 May 2026
- Decided
- 24 Jun 2026
- Ward
- Underhill
- Decision by
- Delegated Decision
- Postcode
- EN5 2NL
Timeline
Dates from the published record
-
11 May 2026
Received by Barnet
-
12 May 2026
Validated
Checked as complete and ready for consideration.
-
24 Jun 2026
Decision issued: Lawful
-
25 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Generative Design Partnership Ltd Agent, a design practice registered in London
Active · incorporated 2005 · London
53 applications on PlanIndex · across 13 councils · 68% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
3 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.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Barnet granted permission on 24 June 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
124 Mays Lane Barnet EN5 2LS
77% historically approved · decision due ~1 Dec
New front hardstanding and vehicular access to provide off-street parking
Awaiting decision Householder 6 docsDomestic -
87 Hillside Gardens Barnet EN5 2NH
Conversion of the existing garage into habitable room, insertion of window to replace the garage door. Increase to height and depth of the existing garage. New front porch (amended)
Refused Lawful development Extension Windows or glazing 4 docsSmall domestic -
87 Hillside Gardens Barnet EN5 2NH
Conversion of the existing garage into habitable room, insertion of window to replace the garage door. Increase to height and depth of the existing garage. New front porch (UPDATED PLANS)
Granted Householder Extension Windows or glazing 8 docsSmall domestic -
38 Kenerne Drive Barnet EN5 2NN
77% historically approved · decision due ~26 Nov
Two storey side extension and single storey rear extension following demolition of the existing garage
Awaiting decision Householder Extension DemolitionSmall domestic -
58 Cedar Lawn Avenue Barnet EN5 2LN
Proposed ground floor rear extension with a maximum depth of 4.0m, a maximum height of 4.0m and an eaves height of 2.98m
Granted Prior approval Extension 8 docs -
43 Cedar Lawn Avenue Barnet EN5 2LP
80% historically approved · decision due ~6 Apr
Roof extension involving rear dormer window, 3no. front facing rooflights and new side gable window
Awaiting decision Lawful development Extension Loft or dormer +1 3 docs
Other lawful development applications
In Barnet
-
26/2679/192 Granted
21 Myddelton Park London N20 0JH
Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).
-
26/1362/191 Refused
145 Cotswold Gardens London NW2 1PL
Use as a House in Multiple Occupation (HMO) for 6 people
-
26/1907/191 Granted
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)
-
26/2392/192 Refused
6 Mostyn Road Edgware HA8 0JD
New front hardstanding and vehicular access to provide off-street parking
-
26/2059/192 Refused
Low Ridge Rowley Lane Barnet EN5 3HS
Erection of a rear outbuilding