
Federation of Damp Certified Surveyor
John Castell FODCS


My Story
Independent Damp & Mould Surveyor in Devon
I provide independent damp surveys, mould inspections and specialist damp-related building condition reports across Devon and the South West, working with homeowners, landlords, businesses and housing providers.
My service is focused on accurate diagnosis of damp and mould problems, helping clients understand the true cause before committing to any remedial work.
Experience Across Domestic & Commercial Buildings
I have spent my career working in property surveying, renewable energy and social housing, inspecting and managing thousands of properties of all types, including:
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Private homes and rental properties
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Landlord and letting agent portfolios
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Housing Association stock
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MOD office buildings
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Large medical practices
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Schools and Commercial premises
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Listed Buildings
This broad experience allows me to assess damp, mould and localized building defects in both residential and commercial environments.
I also provide independent damp reports to support clients during the mortgage and lending process, helping buyers identify moisture-related risks before purchase.
Qualifications & Professional Background
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FODCS – Federation of Damp Certified Surveyor
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Level 4 DEA & NDEA – Domestic & Non-Domestic Energy Assessor
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Government Registered GDA
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HHSRS – Housing Health & Safety Rating System Assessor
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IOSH – Health & Safety Management
Legal & Survey Scope Notice: While my background spans energy, and hazard assessment disciplines, all instructions are strictly accepted for specialist Damp & Timber surveys. These separate technical disciplines are excluded from active testing, and no structural valuations are provided. All inspections are non-invasive utilising existing openings only.
Independent Damp Surveys – A Different Approach
Unlike many companies offering “free damp surveys”, I do not sell remedial treatments.
My role is to provide independent, evidence-based damp and mould surveys so you can make the right decision first time.
I take a holistic, whole-building diagnostic approach within the visible constraints of the property, considering:
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Ventilation and condensation risk
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Building construction and visible defects
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Heating patterns and insulation
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Moisture movement and bridging
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This ensures the root cause is identified, not just the symptoms.
Affordable & Proportionate Surveys
I aim to provide affordable damp surveys in Devon, with a clear and proportionate scope.
You only pay for the level of investigation that is genuinely required — no unnecessary work, no inflated recommendations.
Areas Covered
I carry out damp and mould surveys across:
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Devon
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Exeter
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Torbay
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Plymouth
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Surrounding areas in the South West
Book a Damp Survey in Devon
If you need an independent damp survey, mould inspection or building report in Devon, I’m happy to help.
Contact me today to discuss your property or arrange a survey.
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