Planning application
12A MONTAGUE AVENUE, LONDON, SE4 1YP
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Proposed front garden alterations, including retention and repair of the majority of the existing boundary wall, the creation of a pedestrian opening within the existing boundary wall, level access pathway, together with timber bin store, landscaping and all associated works at 12A Montague Avenue SE4.
As published by the council, reference DC/26/142772
Application record
- Reference
- DC/26/142772
- Type
- Householder Application
- Status
- Decided
- Decision
- Granted
- Received
- 23 Jan 2026
- Validated
- 3 Mar 2026
- Decided
- 28 Apr 2026
- Ward
- Ladywell
- Decision by
- Delegated
- Postcode
- SE4 1YP
Site history
Applications at this address on the Lewisham register
This site has had 2 applications since 2019: 2 approved, 0 refused.
-
DC/19/111637 Granted
12A MONTAGUE AVENUE, LONDON, SE4 1YP
The demolition of the existing single storey rear extension and construction of a single storey rear extension at 12A Montague Avenue, SE4 together with the installation of a timber fence along the south-western boundary of the site.
Timeline
Dates from the published record
-
23 Jan 2026
Received by Lewisham
-
3 Mar 2026
Validated
Checked as complete and ready for consideration.
-
28 Apr 2026
Decision issued: Granted
-
25 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Planning Calculus Agent, a planning consultancy registered in London
Active · incorporated 2024 · London
1 application on PlanIndex
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
20 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.
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Open the documentsWhat this grant of permission means
Lewisham granted permission on 28 April 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 householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
FLAT A, 26 MONTAGUE AVENUE, LONDON, SE4 1YP
FRONT: ONE Elder (T1)(ht:approx 6.5m) CROWN REDUCTION by 2.5m from 6.5m to 4m & CROWN THINNING by 30%, possibly remove two rubbing infused branches; Reason: To improve the shape and the health of the tree which is also encroaching onto the neighbours' front garden as well as the two footpaths from the house front door and street path.
Granted Trees 7 docs -
GROUND FLOOR FLAT, 9 MONTAGUE AVENUE, LONDON, SE4 1YP
Application submitted under Section 96a of the Town & Country Planning Act 1990 (as amended) for a non-material amendment to planning permission DC/22/126514 dated 6 June 2022 to reduce the extent of glazing in the NW Elevation and extend the fenestration in the NE Elevation, together with a change in external materials, at Ground Floor Flat, 9 Montague Avenue, SE4.
Refused Amendments Windows or glazing 12 docs -
17 MONTAGUE AVENUE, LONDON, SE4 1YP
REAR: ONE Cherry Plum (T1)(ht.8m) CROWN REDUCE HEIGHT by 2m to ht.6m, REDUCE SPREAD by 0.5m from 3m to 2.5m. Reason: general maintenance. FRONT: ONE Juneberry (Amelanchier) (T2)(ht.6m) CROWN REDUCE HEIGHT by 1m to ht.5m, REDUCE SPREAD by 1m from 3m to 2m on W compass point & by 0.5m from 2m to 1.5m on remaining compass points, control ivy. Reason: general maintenance. FRONT: ONE Hawthorn (T3)(ht.6m) CROWN REDUCE HEIGHT by 2m to ht.4m, REDUCE SPREAD by 0.5 from 2m to 1.5m. Reason: general maintenance. FRONT: ONE Lawson Cypress (T4)(ht.2m) FELL. Reason: has outgrown its location and is being replaced with Prunus laurocerasus (Cherry laurel) hedging plants 150 - 175cm, 20lt pot grown. FRONT: Purple Hop hedge (G1)(ht.2m) FELL. Reason: to allow more light to the clients garden/property whilst being sympathetic to amenity to replace with 20lt Prunus laurocerasus (Cherry laurel) hedging plants 150 - 175cm. Informative A: thank you for retaining trees for amenity, wildlife and shade to reduce increasingly high summer temperatures due to climate change. Informative B: huge thank you for the replacement planting, a mixed species hedge is encouraged for wildlife and biodiversity ? if evergreen preferred suggest a mix of such as holly, wild privet, spindle, yew, Cotoneaster, Pyracantha. Informative C: please create habitat log piles with arisings for wildlife and biodiversity.
Granted Trees 11 docs -
8 MONTAGUE AVENUE, LONDON, SE4 1YP
The construction of a front boundary brick wall, replacement of the existing render, installation of rear rooflights, alterations to windows and doors at rear ground floor and all associated works at 8 Montague Avenue SE4.
Granted Householder Loft or dormer Windows or glazing 16 docsDomestic -
10 MONTAGUE AVENUE, LONDON, SE4 1YP
The installation of replacement double glazed sliding sash timber framed windows to the front elevation at 10 Montague Avenue, SE4 .
Granted Householder Windows or glazing 6 docsDomestic -
12A MONTAGUE AVENUE, LONDON, SE4 1YP
The demolition of the existing single storey rear extension and construction of a single storey rear extension at 12A Montague Avenue, SE4 together with the installation of a timber fence along the south-western boundary of the site.
Granted Householder Extension Demolition 18 docsSmall domestic
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DC/26/144603 Granted
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DC/26/145239 Awaiting decision
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DC/26/145156 Awaiting decision
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The installation of an Air Source Heat Pump positioned on the flat roof of the front porch, together with the removal of the existing glasal fibre cement cladding board and overcladding the thermal envelope, ground floor rear and front porch extension, first floor rear extension and extension of roofline, installation of solar panels at roof level and all associated works at Walters Way SE23.
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DC/26/142856 Granted
21 HAREFIELD ROAD, LONDON, SE4 1LW
Retrospective planning permission for the construction of timber decking, shed, pergola and a boundary fence in the rear garden of 21 Harefield Road SE4.