Mould Removal in Portsmouth — Verified Local Specialists

Damp & Mould in Portsmouth’s Housing Stock

Portsmouth in numbers: homes, flood risk and rainfall

Housing and flood figures are for the whole Portsmouth local authority area, which is wider than the built-up area alone. Rainfall is the nearest Met Office station's reading.

Sources: ONS Census 2021; Environment Agency flood risk, November 2026; Met Office climate averages.

Mould and damp help near Portsmouth

If you cannot find the right firm in Portsmouth, these are the closest places we list specialists for. Distances are in a straight line from the town or borough centre.

• Gosport2 miles away
• Fareham4 miles away
• Ryde7 miles away
• Cowes10 miles away
• Sandown12 miles away
• Newport, Isle of Wight12 miles away

Guides

Mould Removal Near Portsmouth

Portsmouth mould removal: local answers

How many verified mould specialists cover Portsmouth?

4 verified mould specialists are based within 25 miles of Portsmouth, and 18 more cover the area from further away.

Who is the nearest verified mould specialist to Portsmouth?

BioSweep UK, based in Emsworth, Hampshire, is the nearest — about 7 miles in a straight line from the centre of Portsmouth.View BioSweep UK's profile →

Which services do specialists covering Portsmouth offer?

Of the 22 verified specialists listed for Portsmouth, 20 offer mould removal, 15 offer independent damp surveys, 7 offer damp proofing, 6 offer condensation control & ventilation and 5 offer structural damp & waterproofing. A specialist can offer several.

What kind of damp problems are common in Portsmouth?

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.

Where can Portsmouth tenants report damp and mould to the council?

Tenants and landlords in Portsmouth can report unresolved damp and mould directly to the council through its damp and mould page.Source: Portsmouth council damp and mould reporting page ↗

How many homes in Portsmouth are rented?

In Portsmouth, 28.6% of households (about 24,600 homes) rent privately and 18% rent from a council or housing association. Across England the figures are 20.5% and 17.1%. A private tenant who cannot get damp or mould dealt with can ask Portsmouth's housing or environmental health team to inspect, as it can act on damp and mould as hazards.Source: ONS Census 2021 ↗

What kind of homes are there in Portsmouth?

Across Portsmouth, 43.4% of homes are terraced (England: 23%) and 34.2% are flats (England: 21.4%). 2.4% of households have no central heating (England: 1.5%) and 4.4% have fewer bedrooms than they need (England: 4.4%).Source: ONS Census 2021 ↗

Is Portsmouth at risk of flooding?

In Portsmouth, 3.5% of properties are in areas at medium or high risk (a 1% or greater chance in any year) of flooding from rivers or the sea (England: 1.9%) and 4.5% are at medium or high risk of surface water flooding (England: 5.9%). These are Environment Agency figures for the whole local authority (November 2026), not street-level: the GOV.UK flood service shows the risk for a single address.Source: Environment Agency flood risk, November 2026 ↗

How much rain does Portsmouth get?

The nearest Met Office climate station with a 1991–2020 average, Solent, is about 5 miles from Portsmouth. It recorded an average of 723 mm of rain a year over 1991–2020. That is the station's reading, not Portsmouth's own: hills and coast can change rainfall noticeably over a few miles.Source: Met Office climate averages ↗