London Borough of Lambeth
Planning & Conservation in Lambeth
Lambeth runs from the South Bank to the Victorian streets around Clapham Common and Herne Hill. We design extensions, loft conversions, basements and refurbishments across the borough, within its conservation and permitted-development controls.
The London Borough of Lambeth includes Clapham and Herne Hill, with their Victorian terraces and villas around Clapham Common and the Herne Hill and Half Moon Lane junction. The Clapham Conservation Area, centred on the Common, and the Herne Hill Conservation Area both protect this character, so external alterations are assessed and permitted-development rights can be affected — though neither is among the specific conservation areas where Lambeth has added an Article 4 direction on external works.
Lambeth does, however, operate two borough-wide Article 4 directions that affect change of use: one removing the right to convert commercial premises to residential, and, from 2024, one removing the right to convert a family house into a small house in multiple occupation — so both of those changes now need a full planning application anywhere in the borough. For a standard extension, loft or basement, we test the position for the specific property and prepare the drawings needed to obtain approval and build.
How planning works here
London Borough of Lambeth: process for homeowners
Lambeth covers Clapham and other south-of-the-river family streets — Victorian terrace extensions, side returns and lofts against CA character and neighbour amenity.
Householder process
1. Confirm CA and borough edge
Parts of Clapham sit near Wandsworth boundaries. Confirm Lambeth is the determining authority and whether a conservation area covers the address before assuming PD.
2. Terrace extension design
Rear and side-return extensions are assessed for scale, materials and neighbour living conditions. Closet-wing geometry and short gardens make sections decisive.
3. Lofts and roofscape
Rear dormers are the common form; front-slope and mansard proposals face higher scrutiny in CAs. Design fire escape with the loft volume.
4. Validation and technical stages
Complete householder packages; then building regulations, party wall and drainage/build-over where relevant.
Project types & evidence
Side returns
Classic Clapham project type. Success turns on flank, roof form and neighbour windows more than on maximum plan depth.
Basements
Confirm current Lambeth basement policy and evidence requirements for the application date; do not import Camden/RBKC packages wholesale without checking local validation.
Commons-edge and terrace character
Clapham Common-edge streets and inland terraces are not identical. Elevation and outlook arguments should match the actual street type.
Package
Measured existing/proposed plans, elevations, sections; location/block plans; CA detail where required.
Official sources used on this page
Policy and Article 4 maps change. Confirm designations for your exact address on the council’s live planning map before relying on any general description.
Areas we cover
Prime neighbourhoods in Lambeth
Architects in Brixton
Brixton’s authority evidence is internally consistent: Lambeth appears at the point and throughout the complete 1,400-metre screen. That gives a simpler authority picture than many boundary localities, but the conservation evidence remains highly granular. The dataset names Brixton, Brixton Road and Brixton Water Lane alongside Albert Square, Brockwell Park and several other nearby areas. A single Lambeth route therefore does not mean a single set of local constraints. For any Brixton address, the live designation boundary and the relationship of the proposed external work to it must be established before architectural advice becomes site-specific.
View areaArchitects in Kennington
Four councils intersect Kennington’s evidence: Lambeth at the point, then Southwark, Wandsworth and Westminster inside 1,400 metres. The conservation search reflects that junction: Kennington and Albert Embankment appear with Addington Square, Camberwell New Road, Millbank, Pimlico and several other records. This is evidence of proximity across authority lines, not a combined designation. A Kennington address must be placed precisely before the responsible authority, applicable conservation boundary and architectural consequences are fixed. Lambeth is the point result; every neighbouring source needs a demonstrated site or setting connection.
View areaArchitects in Lambeth
At the checked locality point for Lambeth, the GLA planning-authority layer identifies Lambeth as the planning authority; its 1,400-metre search also returns Southwark, Wandsworth and Westminster. Nearby conservation records span Lambeth Palace, Lambeth Walk and China Walk, Lower Marsh, Roupell Street, South Bank, Vauxhall and Waterloo, as well as records owned by adjacent authorities. This is not one borough-wide designation profile. It is a tightly interleaved evidence field. The exact address must determine which authority and mapped area matter before any architectural consequence is assigned to a Lambeth project.
View areaArchitects in Stockwell
Lambeth contains the Stockwell sample; Southwark and Wandsworth appear only when the authority search expands to 1,400 metres. The conservation dataset names Stockwell Green and Stockwell Park alongside Brixton, Clapham, South Lambeth Road, Albert Square and several other Lambeth records. That local density does not establish designation for a particular Stockwell address. Lambeth is the confirmed point route, with Southwark and Wandsworth as boundary context. The property must be mapped before any one conservation name is used to explain design constraints or character.
View areaArchitects in Streatham
A Lambeth point sits at the centre of the Streatham authority screen, with Merton and Wandsworth entering the surrounding 1,400 metres. Nearby conservation records include Leigham Court Estate, Leigham Court Road North and South, Streatham Common, Streatham High Road and Streatham Hill, Hyde Farm and several Wandsworth “Cons Area” entries. This is a boundary-rich evidence field rather than one Streatham-wide designation. Lambeth is the point authority; Merton and Wandsworth need an exact geographic reason. The property must be checked on live maps before local conservation consequences are claimed.
View areaArchitects in Vauxhall
Lambeth owns the Vauxhall coordinate; the surrounding 1,400-metre circle reaches Southwark, Wandsworth and Westminster. The conservation evidence includes Vauxhall, Vauxhall Gardens, Albert Embankment, South Lambeth Road and Stockwell Park, together with Westminster records such as Millbank and Pimlico and Southwark’s West Square. That is a multi-authority proximity field, not a combined designation. Lambeth is the confirmed starting route. An exact Vauxhall address must determine which boundary and source owner matter before architectural consequences are described.
View areaArchitects in Waterloo
Waterloo’s point returns Lambeth, while its central 1,400-metre radius extends into Southwark, Westminster, Camden and the City of London. The conservation search names Waterloo, Lower Marsh, Roupell Street and South Bank alongside Southwark’s Bear Gardens and West Square, Westminster’s Adelphi and Covent Garden, Camden’s Seven Dials and City records such as Fleet Street. This is proximity across central boundaries, not one planning context. Lambeth is the checked starting route, and an exact Waterloo address must determine which authority and designation actually matter.
View areaArchitects in West Dulwich
The West Dulwich sample sits in Lambeth; Southwark appears beyond the point when the authority search reaches 1,400 metres. Nearby conservation records include Brockwell Park, Elderwood, Lancaster Avenue, Leigham Court Estate, Park Hall Road and West Norwood from the Lambeth field, together with Dulwich Village, Dulwich Wood and other Southwark records. This mix does not establish designation for a specific West Dulwich address. Lambeth is the checked starting authority, while Southwark requires a boundary or setting reason. The precise site must lead the architectural interpretation.
View areaArchitects in West Norwood
West Norwood’s coordinate resolves to Lambeth, but the 1,400-metre authority circle also crosses Croydon and Southwark. Nearby conservation records include Elderwood, Lancaster Avenue, Leigham Court Estate, Leigham Court Road North and South, West Norwood and several Southwark or Croydon-side areas such as Dulwich Village and Norwood Grove. This is a three-authority boundary field, not a declaration that one designation covers the locality. Lambeth is the checked route, and the exact address must determine which conservation source and architectural consequences are relevant.
View areaLambeth
Architects in Clapham
We help Clapham homeowners add light and family space to their Victorian terraces and Old Town houses — side-return extensions, lofts and basements — with drawings ready for Lambeth’s planners.
View areaLambeth / Southwark
Architects in Herne Hill
We design side-return extensions, loft conversions and refurbishments for Herne Hill’s Victorian and Edwardian homes, from the streets by Brockwell Park to the leafy roads towards North Dulwich. Getting the right council and conservation position is our starting point.
View areaPlanning in Lambeth: FAQs
Can I turn a house into an HMO in Lambeth under permitted development?
Are Clapham and Herne Hill conservation areas?
Planning a project in Lambeth?
Send us the address, property type and a short description of the work. We will advise whether you are likely to need planning drawings, building regulations drawings, listed building advice or leasehold approval drawings.