Tall building development at Vauxhall and Nine Elms sits alongside Lambeth's Victorian housing across Brixton, Stockwell, and Streatham, mansion blocks along Kennington Park Road, and post-war housing estates throughout the borough. Almost all the older stock has windows that have received natural light for well over the 20 years required to acquire the easement under the Prescription Act 1832, which means Vauxhall and Nine Elms schemes, mid-rise residential redevelopment, and conversion projects all routinely raise rights of light questions. London Borough of Lambeth planning consent does not address that legal position.
We act on Lambeth schemes from the London head office, with reach across Vauxhall, Kennington, Brixton, and Streatham, supported by colleagues in Essex and Hampshire. CHP is RICS regulated and has been advising on rights of light since 2004. The London team handles this work with specialist focus, and where the work overlaps with the Party Wall etc. Act 1996 we run party wall services from the same point of contact.
The right time to instruct is early, before drawings go in for planning consent. On a Lambeth project, that means commissioning the free initial assessment at the design stage, when changes to massing, height, or fenestration are still affordable. The appraisal identifies which neighbouring windows could be affected and which look likely to carry the 20-year easement under the Prescription Act 1832, and a full rights of light analysis follows using specialist software where the appraisal flags a real risk.
Where the modelling shows likely infringement, the cutback analysis tests design variations including reduced height, set-back upper floors, and adjusted fenestration until the scheme works for both the planning case and the rights of light position. The Equivalent First Zone and the 50/50 rule are applied to quantify any loss. Our rights of light assessments overview sets out the broader method for design teams new to the area, with each scope tailored to the specific project.
Adjoining owners in Lambeth have several options when faced with a nearby development that threatens the light through their windows. We assess the impact of the proposed scheme on the affected rooms, advise on the strength of the legal position under the acquired easement, and set out the available remedies including negotiation, formal objection to the London Borough of Lambeth, and ultimately court action where matters cannot be resolved between the parties.
Light Obstruction Notices can also be used to protect future development potential of the adjoining owner's own property. For developers, the same early assessment work avoids surprises during construction and gives certainty over the cost of any required release. A short free initial assessment is the quickest way to know where you stand.
