Harwich's Old Town conservation streets, Victorian terraces along the harbour, and historic merchant houses near the quay create a residential pattern dominated by older buildings where windows have received natural light for far longer than the 20 years required to acquire the easement under the Prescription Act 1832. When new builds, conversions, or larger rear extensions go up nearby, those acquired rights are a real consideration. Tendring District Council planning consent does not address rights of light, so the legal track has to be worked through separately.
We act on Harwich schemes from the Wickford office, with reach across Dovercourt, Parkeston, Ramsey, and the wider Tendring area, supported by colleagues in London and Hampshire. CHP is RICS regulated and has been advising on rights of light since 2004. The local Essex team handles this work faster than London-led practices, and we can bring in airspace development advice on roof-level conversions in the older streets.


Every Harwich project starts with a free initial assessment of the proposed scheme against the surrounding context. We identify the neighbouring windows that are likely to carry the 20-year easement and the points of the proposed massing most likely to cause an issue. A full rights of light analysis follows using specialist software, with the existing and proposed light levels modelled and tested against the Equivalent First Zone and the 50/50 rule for each affected room.
Where modelling shows likely infringement, the cutback analysis tests design variations to find a scheme that works for both the planning case and the rights of light position. For Harwich projects this often means roof-level conversions on conservation street properties, infill new builds on cleared plots, and rear extensions on Victorian terraces. Where adjoining owners need protecting, our rights of light assessments cover Light Obstruction Notices and any settlement negotiations through to a deed of release.
A good outcome means the Harwich scheme is viable, the impact on neighbouring windows has been quantified and addressed, and any infringement has been resolved on agreed terms before construction starts. For most local developments, that means a few design adjustments at the planning stage and a negotiated release of rights where any residual impact remains. Court action is rare when the rights of light position is identified and worked through early on the project.
Adjoining owners on Harwich streets affected by a nearby development can equally instruct us to assess the impact, advise on the strength of their legal position under the acquired easement, and consider Light Obstruction Notices where formal protection of acquired light is the right step. A free initial assessment covers either side of the table and is offered without charge.
