How do I find a mould specialist in Portsmouth?

Search MouldPros for Portsmouth — all listed specialists are manually verified. Filter by service type (mould remediation, damp survey, damp proofing, ventilation) to find the right contractor for your property.

Does Awaab's Law apply to landlords in Portsmouth?

Awaab's Law has applied to social housing in England since October 2025. For private landlords in Portsmouth, the extension is a later phase of the Renters' Rights Act 2025 rollout, with no confirmed start date yet. Once in force it will require investigating significant damp and mould hazards within 10 working days and completing safety works within 5 working days of the investigation concluding (24 hours for emergencies).

What types of damp are most common in Portsmouth rental properties?

Portsmouth is the most densely populated city in the UK outside London, and its rented housing stock reflects that — tightly packed Victorian terraces with little outdoor space. Condensation mould is the most common problem in all UK rental properties, followed by penetrating damp in older terraced housing and rising damp in pre-1919 properties without adequate damp-proof courses.

How much does mould removal cost in Portsmouth?

Mould removal costs vary significantly depending on the extent of growth and the treatment required. Surface mould treatment in a single room typically costs £150–£400. Extensive remediation involving plaster removal and replacement can cost £800–£3,000+. An independent damp survey (£200–£400) is the recommended starting point to get an accurate scope of works.

Can a MouldPros specialist in Portsmouth provide a written report for Awaab's Law compliance?

Yes. Many MouldPros-listed specialists in Portsmouth and the wider South East area provide written inspection reports suitable for evidencing Awaab's Law compliance. Look for contractors with PCA accreditation or RICS qualifications, and confirm the written report format before booking.

Is mould in my home in Portsmouth a health risk?

Household mould, including black mould, can affect respiratory health — particularly for children, older people, and anyone with asthma or a weakened immune system. Occasional light surface mould in a bathroom is common and usually low-risk once cleaned, but persistent or spreading mould, or mould affecting a bedroom or living area, is worth having assessed rather than just wiped away repeatedly.

Can I remove mould myself, or do I need a professional in Portsmouth?

Small, isolated patches of surface mould on non-porous surfaces (tiles, glass, painted wood) can often be cleaned yourself with appropriate gloves, ventilation, and a mould-specific product. Mould covering a large area, mould that keeps returning after cleaning, or mould linked to a leak, damp patch, or condensation problem needs a professional inspection — treating the surface without fixing the underlying moisture source means it will come back.

What causes mould in a home I own, and is it something I've done wrong?

Mould needs moisture to grow, which in owned homes usually comes from condensation (cooking, showers, or drying laundry indoors without ventilation), a leak, rising damp in older properties, or penetrating damp through the building fabric. It's rarely about cleanliness — even well-kept homes get mould if ventilation or a building defect lets moisture build up. A specialist survey identifies the actual cause rather than guessing.

Will home insurance cover mould damage in Portsmouth?

Usually only if the mould results from a sudden, insured event — such as a burst pipe or storm damage — reported promptly. Most standard home insurance policies exclude mould caused by gradual issues like long-term condensation, rising damp, or lack of maintenance, since insurers treat these as preventable. Check your policy wording and speak to your insurer before assuming cover applies.

How do I stop mould coming back after treatment in Portsmouth?

Address the moisture source first — improve ventilation (extractor fans, trickle vents, opening windows after showers or cooking), fix any leaks or damp ingress, and avoid drying laundry on radiators in unventilated rooms. A specialist can advise on longer-term fixes such as positive input ventilation (PIV) systems or damp-proofing where the cause is structural rather than behavioural.

Mould Removal in Portsmouth

Verified mould removal, damp, and ventilation contractors serving landlords in Portsmouth and the surrounding area. All listings manually reviewed.

Quick answer

MouldPros lists verified mould and damp specialists in Portsmouth — 12 specialists currently listed. Every contractor is manually reviewed. Landlords can search by service type and contact specialists directly — no commission, no middlemen.

Damp & Mould in Portsmouth’s Housing Stock

Portsmouth is the most densely populated city in the UK outside London, and its rented housing stock reflects that — tightly packed Victorian terraces with little outdoor space.

Limited cross-ventilation and indoor drying in such dense housing are recurring contributors to condensation mould, on top of the solid-wall structural damp typical of the age of stock. The council received nearly 2,000 damp and mould enquiries in 2024/25 and found around 70% were condensation-related rather than structural.

Landlords and tenants can also report unresolved damp and mould directly to the council: council damp & mould reporting page →

Mould & Damp Specialists in Portsmouth

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Ideal Response

Maidstone, East of England; London; South East · ME14 3LY

20+ years' experience in professional mould removal, Awaab's Law compliant with IICRC and BDMA accreditation. Provides full audit trails required to meet Awaab's Law standards. HEPA air scrubbing and industrial biocides. End-to-end solution from damp surveying to comprehensive mould remediation.

✓ Awaab's Law

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Mould Management

Tunbridge Wells, South East · TN2 4BB

Mould removal specialists based in Kent, also serving East Sussex including Brighton, Eastbourne, Hastings, Lewes, Newhaven, Seaford, Uckfield, Bexhill-on-Sea, Crowborough, Hailsham and Burgess Hill. Aims to be on-site within 24 hours. Competitive pricing with price matching.

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Croft Preservation

Poole, South East; South West · BH12 4NL

Leading providers of mould removal services in Southampton and Hampshire. Long-lasting solutions for eliminating damp and mould including condensation, penetrating and rising damp. Comprehensive mould removal and treatment services for commercial and residential customers. Free quotes available.

✓ PCA

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SHS Hants

Southampton, South East · SO14 5FE

Local mould specialists for Southampton and Hampshire. Advanced techniques and non-toxic products to tackle mould at the source and prevent it from returning. Free survey and expert advice. Covers Southampton, Portsmouth, Winchester, Eastleigh and surrounding Hampshire areas.

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Nordic Damp Proofing Ltd

Southampton, South East; South West · SO14 5AA

South coast damp, mould and timber specialists with 40+ years combined experience. PCA-trained surveyors using thermal imaging, moisture meters and humidity testing. Covers Bournemouth, Poole, Christchurch, Southampton, Portsmouth and Winchester. Free quotes, 25-year guarantees, Biokil and ISSE accredited.

✓ PCA

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Insite (Southern) Ltd

Southampton, South East · SO15 3BA

Southampton's oldest specialist remedial contractor established 1974. 45+ years' experience serving Southampton, Bournemouth, Salisbury, Andover, Portsmouth and Chichester. Services include mould issues, damp proofing, tanking, condensation control, wall tie replacement and woodworm treatment.

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ServiceMaster Restore

Whetstone, East Midlands; East of England; London; North West; South East; West Midlands; Yorkshire · LE8 6LH

National mould removal franchise network with local specialists across the UK. 24-hour helpline. Professional inspection, removal and prevention services for homes and businesses. Fully accredited team with specialist equipment. Find your nearest ServiceMaster Restore business for local service.

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The Dwelling Doctors

Waltham Abbey, East Midlands; East of England; Greater Manchester; London; North West; South East · EN9 1JH

Nationally operating mould removal and domestic ventilation specialist serving Liverpool and across the UK. Educates landlords on preventing moisture and mould. Offers PIV system installations, black mould removal and condensation control. Works with PAS-funded schemes and Awaab's Law compliance.

✓ Awaab's Law

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Pure Maintenance UK

Daventry, East Midlands; East of England; Greater Manchester; London; North East; North West; Scotland; South East; South West; Wales; West Midlands; Yorkshire · NN11 4HN

UK's leading patented dry fog mould remediation company. Dewpoint Professional accredited. Non-toxic InstaPURE treatment kills surface, airborne and hidden mould spores without property destruction. 12-month guarantee with free return visits. Covers all of England, Scotland, Wales and Northern Ireland.

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Mould Busters

Carshalton, East Midlands; East of England; Greater Manchester; London; North East; North West; Scotland; South East; South West; Wales; West Midlands; Yorkshire · SM5 3NP

Specialist mould investigation and air decontamination company covering the whole UK. Identifies moisture issues, assesses mould responsibility, identifies health hazards and provides detailed expert witness reports. Offers air decontamination and comprehensive remediation solutions.

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Biohazard Cleanup Company

London, East Midlands; East of England; Greater Manchester; London; North East; North West; Scotland; South East; South West; Wales; West Midlands; Yorkshire · EC1V 2NJ

Leading national biohazard and mould removal specialist with over 20 years' experience. Available 24/7 with one-hour emergency response. HEPA air scrubbing, ozone purification, full decontamination and odour neutralisation. Works with housing associations, NHS facilities, councils and landlords.

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ICE Cleaning

Sevenoaks, East Midlands; East of England; Greater Manchester; London; North East; North West; Scotland; South East; South West; Wales; West Midlands; Yorkshire · TN13 2BL

ICE Cleaning is a national specialist cleaning company offering Dewpoint-accredited mould remediation. With a lifetime guarantee, 9-stage treatment process, HEPA air scrubbing and industrial biocides, they serve landlords, housing associations and commercial properties across all UK regions. Fully aligned with Awaab's Law compliance.

✓ Awaab's Law

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Services Available in Portsmouth

Mould Removal

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Independent Damp Surveys

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Damp Proofing

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Ventilation Solutions

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Structural Damp & Waterproofing

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Guides

How to find a reliable mould removal specialist near you →How much does mould removal cost? →

Awaab’s Law compliance in Portsmouth

Under Awaab’s Law — in force for social housing since October 2025 and being extended to private rentals under the Renters’ Rights Act 2025 — landlords in Portsmouth will need to investigate and fix damp and mould hazards within strict legal timeframes. Having a verified local specialist on call is essential for meeting the 10-working-day investigation deadline.

Read the Awaab’s Law guide All South East specialists

Frequently Asked Questions About Damp & Mould in Portsmouth

How do I find a mould specialist in Portsmouth?: Search MouldPros for Portsmouth — all listed specialists are manually verified. Filter by service type (mould remediation, damp survey, damp proofing, ventilation) to find the right contractor for your property.
Does Awaab's Law apply to landlords in Portsmouth?: Awaab's Law has applied to social housing in England since October 2025. For private landlords in Portsmouth, the extension is a later phase of the Renters' Rights Act 2025 rollout, with no confirmed start date yet. Once in force it will require investigating significant damp and mould hazards within 10 working days and completing safety works within 5 working days of the investigation concluding (24 hours for emergencies).
What types of damp are most common in Portsmouth rental properties?: Portsmouth is the most densely populated city in the UK outside London, and its rented housing stock reflects that — tightly packed Victorian terraces with little outdoor space. Condensation mould is the most common problem in all UK rental properties, followed by penetrating damp in older terraced housing and rising damp in pre-1919 properties without adequate damp-proof courses.
How much does mould removal cost in Portsmouth?: Mould removal costs vary significantly depending on the extent of growth and the treatment required. Surface mould treatment in a single room typically costs £150–£400. Extensive remediation involving plaster removal and replacement can cost £800–£3,000+. An independent damp survey (£200–£400) is the recommended starting point to get an accurate scope of works.
Can a MouldPros specialist in Portsmouth provide a written report for Awaab's Law compliance?: Yes. Many MouldPros-listed specialists in Portsmouth and the wider South East area provide written inspection reports suitable for evidencing Awaab's Law compliance. Look for contractors with PCA accreditation or RICS qualifications, and confirm the written report format before booking.

Own Your Home in Portsmouth? Mould Removal FAQs

Quick answer

If you own your home in Portsmouth rather than rent, mould is a health and maintenance issue rather than a legal compliance one — but the causes and fixes are the same. MouldPros-listed specialists in Portsmouth work with homeowners as well as landlords and letting agents.

Is mould in my home in Portsmouth a health risk?: Household mould, including black mould, can affect respiratory health — particularly for children, older people, and anyone with asthma or a weakened immune system. Occasional light surface mould in a bathroom is common and usually low-risk once cleaned, but persistent or spreading mould, or mould affecting a bedroom or living area, is worth having assessed rather than just wiped away repeatedly.Source: UKHSA / GOV.UK ↗
Can I remove mould myself, or do I need a professional in Portsmouth?: Small, isolated patches of surface mould on non-porous surfaces (tiles, glass, painted wood) can often be cleaned yourself with appropriate gloves, ventilation, and a mould-specific product. Mould covering a large area, mould that keeps returning after cleaning, or mould linked to a leak, damp patch, or condensation problem needs a professional inspection — treating the surface without fixing the underlying moisture source means it will come back.
What causes mould in a home I own, and is it something I've done wrong?: Mould needs moisture to grow, which in owned homes usually comes from condensation (cooking, showers, or drying laundry indoors without ventilation), a leak, rising damp in older properties, or penetrating damp through the building fabric. It's rarely about cleanliness — even well-kept homes get mould if ventilation or a building defect lets moisture build up. A specialist survey identifies the actual cause rather than guessing.
Will home insurance cover mould damage in Portsmouth?: Usually only if the mould results from a sudden, insured event — such as a burst pipe or storm damage — reported promptly. Most standard home insurance policies exclude mould caused by gradual issues like long-term condensation, rising damp, or lack of maintenance, since insurers treat these as preventable. Check your policy wording and speak to your insurer before assuming cover applies.
How do I stop mould coming back after treatment in Portsmouth?: Address the moisture source first — improve ventilation (extractor fans, trickle vents, opening windows after showers or cooking), fix any leaks or damp ingress, and avoid drying laundry on radiators in unventilated rooms. A specialist can advise on longer-term fixes such as positive input ventilation (PIV) systems or damp-proofing where the cause is structural rather than behavioural.