Condensation, mould and landlords, Norfolk
Indoor air quality surveys in Norfolk
CO2, humidity and particulates logged for a week, with plain-English findings, across Norfolk.
- From £150 inc VAT per home
- Charged visit, price agreed first

An indoor air quality survey measures how fresh and how damp the air in a building really is, over days rather than minutes. We place loggers that record CO2, humidity and temperature (and particulates in workplaces), then explain what the readings mean and what ventilation changes would help.
Our team is based in Great Barr, Birmingham, and we work throughout Norfolk, from Great Yarmouth, King's Lynn, Thetford, Bowthorpe and East Dereham. This is a charged visit. We confirm the cost in writing before we book it.
Air quality surveys in Norfolk at a glance
- Area
- Norfolk
- Towns listed
- 11, largest Norwich
- Postcode districts
- NR30, NR31, NR1, NR2, NR29 and NR30
- Price region
- East of England
- Survey
- Charged visit, price agreed first
What the work involves
CO2 is a practical indicator of whether a room is getting enough fresh air for the number of people in it: levels that climb steadily through a meeting or a night in a bedroom point to under-ventilation. Humidity readings show whether moisture is being removed or lingering long enough to cause condensation and mould. Surveys are useful before spending money: they show whether a problem is constant or happens at particular times, which rooms are worst, and whether an existing system is doing its job.
Before and after
Readings taken before and after a ventilation upgrade to show the difference.
Spot checks
Readings taken during a single visit, where a quick answer is enough.
Home survey
Loggers in bedrooms, living areas and wet rooms for 7 days, with a written summary.
Guide prices in Norfolk
| Work | Guide price |
|---|---|
| Home air quality check: CO2, humidity and temperature logged for 7 days (per home) | £150–£255 inc VAT |
| Workplace air quality survey: CO2, PM2.5, humidity, 7 days logged, written report (per survey) | £525–£1,250 + VAT |
These ranges use our East of England rates. Home prices include VAT at 20%; business prices exclude VAT. You get a fixed written price before any work is booked.
When to get it looked at
- Headaches or drowsiness in meeting rooms or classrooms
- Condensation and mould with no obvious cause
- You want evidence before spending money on ventilation
Rules in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Workplaces must also be ventilated with a sufficient quantity of fresh or purified air under the Workplace (Health, Safety and Welfare) Regulations 1992.
How the job runs
- Plan
- Place loggers
- Log
- Analyse
- Report
Towns we cover in Norfolk
- Norwich
- Great Yarmouth
- King's Lynn
- Thetford
- Bowthorpe
- East Dereham
- North Walsham
- Downham Market
- Diss
- Attleborough
- Bradwell
Questions about indoor air quality surveys in Norfolk
Is the survey free in Norfolk?
This is a charged visit because it is servicing, testing or repair work. We tell you the cost before booking. Surveys for new installations on the UK mainland are free.
What humidity should a home be?
Relative humidity of roughly 40 to 60 percent is comfortable for most homes. Readings that sit above 70 percent for long periods make condensation and mould much more likely.
How much does an air quality survey cost?
A home survey costs £145 to £245 including VAT, and a workplace survey £495 to £1,195 excluding VAT, depending on the number of rooms.
Which rules apply to ventilation in Norfolk?
In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Which towns in Norfolk do you cover?
All of Norfolk, including Great Yarmouth, King's Lynn, Thetford, Bowthorpe and East Dereham. If your town is not listed, send the postcode and we will confirm.
Other services in Norfolk
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.