Professional Surveying Services
Welcome to David Cosby Chartered Surveyors
We are a firm of Chartered Land Surveyors, Building Surveyors, and Registered Valuers, regulated by the Royal Institution of Chartered Surveyors (RICS)
Commercial Property Surveys
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RICS Home Survey Reports & Valuations
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Probate Valuations
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Land Registry Compliant Plans
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Measured Building Surveys
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Land Surveying
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Party Wall Surveying and Advice
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Regulated by the Royal Institution of Chartered Surveyors (RICS)
Our surveying services are conducted by qualified professionals who adhere to the strict standards and ethical guidelines set by the Royal Institution of Chartered Surveyors (RICS)

Your Local Property Professionals
From our base in South Northamptonshire, David Cosby Chartered Surveyors offer informed local insight alongside nationwide surveying services. With specialist land and building surveying expertise, we provide dependable, up-to-date guidance on all aspects of land and property.
Latest News and Projects
Neighbour Building Without a Party Wall Notice – What Are Your Rights?
What happens if a neighbour starts building without serving a Party Wall Notice? A practical guide explaining your rights and how situations are usually resolved under the Party Wall etc. Act 1996.
A Brief History of Land Surveying
Land surveying looks thoroughly modern today, but the profession is ancient. This short article traces the evolution of surveying methods from ropes and chains to theodolites, laser scanners and satellites — and explains why careful measurement and professional judgement still matter.
Fire Mark Plaques on Older Homes: What Are They?
Fire mark plaques are small metal signs fixed to older buildings, dating from a time when fire protection was provided by private insurance companies rather than public fire brigades. Often found on Georgian and early Victorian houses, these plaques offer a fascinating insight into early property insurance and the development of modern fire services.






