TL;DR — Fumigation At A Glance
- Most whole-property fumigation-style treatments cost £150 – £400 or more, priced by property size and how severe the infestation is. London adds roughly 20–30%.
- In UK homes, "fumigation" usually means an intensive whole-property treatment — fogging, space treatment and targeted insecticides — rather than the sealed-gas fumigation used for warehouses and shipping.
- The price depends on the property size, the pest involved, the severity, and the number of rooms or areas treated.
- A single-room treatment sits at the lower end; a whole-house, heavy infestation sits at the top and may need more than one visit.
- Treatment usually covers a survey, the treatment itself and prevention advice — you will need to vacate treated areas for a set time.
- Targeted treatment of a specific pest is often cheaper and just as effective as blanket fumigation, so a survey first can save money.
Get a fixed price for professional fumigation — check prices and book online or call to talk through the right treatment for your infestation.
How Much Does Fumigation Cost In 2026?
Professional fumigation-style treatment in the UK typically costs £150 – £400 or more, priced by property size and severity. London and the South East run roughly 20–30% higher. That covers a survey, an intensive treatment of the affected areas, and advice on preventing the problem returning.
It is worth being clear about what "fumigation" means in a home context. True fumigation — filling a sealed space with a toxic gas — is used for large commercial spaces, warehouses, grain stores and shipping containers, and is rarely appropriate or necessary for a house or flat. When homeowners ask about fumigation, what usually fits the bill is an intensive whole-property or whole-room treatment: fogging or space treatment combined with targeted insecticides that reach into cracks, voids and soft furnishings. This is used for heavy or widespread infestations of insects such as fleas, cockroaches, bed bugs or moths, where a single spot treatment is not enough.
Here is what you can expect to pay for fumigation-style treatment across the UK:
| Scope | Rest of UK | London & South East |
|---|---|---|
| Single room / targeted area | £150 – £220 | £180 – £280 |
| Whole flat | £200 – £320 | £250 – £400 |
| Whole house | £300 – £400+ | £360 – £500+ |
| Severe / multi-visit | £400+ | £500+ |
Figures include VAT and reflect 2026 market rates. Your exact price depends on the pest, property size and severity — get a fixed quote here.
Fumigation Cost By Property Size And Severity
Fumigation-style treatment is priced mainly by the area treated and how heavy the infestation is. The table below shows how that plays out.
| Situation | What it involves | Typical cost |
|---|---|---|
| One room, moderate infestation | Fogging/space treatment of one area | £150 – £220 |
| Whole flat, established infestation | Multiple rooms treated together | £200 – £320 |
| Whole house, heavy infestation | Full-property treatment, possible follow-up | £300 – £400+ |
| Severe / recurring | Repeat visits and intensive treatment | £400+ |
Fumigation-style work is mostly skilled labour and product. The biggest cost drivers are the area treated, the severity, and whether more than one visit is needed.
What Affects The Cost Of Fumigation?
Several factors decide where you land in the ranges above.
1. Property Size And Number Of Rooms
The main driver is how much space needs treating. A single room is far cheaper than a whole flat, which is cheaper than a full house. Every additional room adds product and time.
2. The Pest Involved
Different pests need different treatments and products. A heavy flea or moth infestation is treated differently from cockroaches or bed bugs, and some pests need repeat visits to break their life cycle — which changes the total cost.
3. The Severity Of The Infestation
A moderate infestation caught reasonably early is quicker to treat. A severe, long-established one, spread through the property and deep into furnishings, needs more intensive treatment and often a follow-up visit.
4. Number Of Visits
Many insect infestations cannot be cleared in one go because eggs survive the initial treatment. Where follow-up visits are needed to catch newly hatched pests, the total cost rises accordingly.
5. Access And Preparation
Cluttered rooms, hard-to-reach voids and lots of furniture slow the job. Good preparation — clearing surfaces, moving items and giving access — keeps the time and cost down.
6. Your Location
London and the South East add roughly 20–30% to fumigation-style treatment, reflecting higher labour and travel costs.
What's Included — And What's Not
Typically included in a fumigation price:
- A survey to identify the pest, the spread and the right treatment
- The intensive treatment — fogging, space treatment and targeted insecticides
- Advice on how long to stay out of treated areas and how to ventilate
- Prevention advice to stop the problem returning
- Follow-up visits where the pest needs them (check the quote)
Usually charged separately or excluded:
- Laundering or disposing of your own heavily infested belongings
- Sealing entry points and structural pest proofing
- Additional visits beyond the agreed plan (unless covered by a guarantee)
- Specialist sealed-gas fumigation for commercial or container use
Always get the scope and the number of visits in writing before work starts.
Can You Do It Yourself?
DIY "foggers" and "bug bombs" are sold for £5 – £20 and can knock back adult insects in a room, but they have real limits. They rarely reach the cracks, voids and soft furnishings where eggs and larvae hide, so infestations often rebound. Used incorrectly, they can also spread pests to other rooms or leave residue on surfaces.
Call a professional for any heavy or whole-property infestation, or when DIY has already failed. A technician surveys first to identify the pest and choose the right treatment, uses professional-grade products that reach where foggers cannot, and plans the follow-up visits some infestations need. Just as important, they will tell you honestly whether a targeted treatment would do the job more cheaply than blanket fumigation — which is often the case.
How To Save Money On Fumigation
- Get a survey first — a targeted treatment of the actual problem is often cheaper and just as effective as whole-property fumigation.
- Act early — a moderate infestation in one or two rooms costs far less than a whole-house job.
- Prepare thoroughly — declutter, clear surfaces and give access so the technician's time goes on treatment.
- Deal with the source — remove attractants and, for pests like fleas, treat pets separately so the treatment is not undone.
- Choose a treatment with follow-ups included where the pest needs them, rather than paying for separate callouts.
- Get 2–3 quotes and compare what's included, not just the headline price.
How To Hire A Good Pest Controller
Fumigation-style treatment uses professional insecticides in enclosed spaces, so choose a qualified, insured technician. Look for membership of the British Pest Control Association (BPCA) or NPTA, confirm technicians are trained and certified to apply these treatments safely, and check public liability insurance. Ask for reviews, and get a written quote covering the pest, the areas treated, the number of visits and any guarantee.
A good technician will survey before treating, recommend the least intensive effective option, and give you clear safety instructions on vacating and ventilating treated areas.
With Fantastic Services, you get vetted, insured pest control technicians, transparent pricing and online booking — describe the problem and get a price up front.
Frequently Asked Questions
How Much Does Fumigation Cost In The UK?
In 2026, fumigation-style whole-property treatment typically costs £150 – £400 or more, priced by property size and severity, with London adding roughly 20–30%. A single room sits at the lower end and a heavily infested house at the top.
What Is The Difference Between Fumigation And Spraying?
Spraying targets specific surfaces and harbourage points. Fumigation-style treatment is more intensive — fogging or space treatment that reaches a whole room or property, used for heavy or widespread infestations. True sealed-gas fumigation is reserved for commercial and container use.
Do You Need To Leave Your Home During Fumigation?
Yes — you will need to vacate treated areas for a set period, usually several hours, and ventilate afterwards. Your technician will tell you exactly how long to stay out based on the products used and the areas treated.
Is Whole-House Fumigation Necessary?
Often not. A survey usually shows that a targeted treatment of the actual problem area is cheaper and just as effective. Whole-house treatment is reserved for genuinely widespread, severe infestations.
How Long Does Fumigation Take To Work?
Adult insects are usually affected quickly, within hours to a few days. For pests whose eggs survive the treatment, a follow-up visit two to three weeks later catches newly hatched insects — so a full result can take a few weeks.
Is Fumigation Safe For Pets And Children?
Professional treatments are applied by trained technicians who will give you clear instructions on vacating and ventilating. Once the specified time has passed and areas are ventilated, it is safe to return. Follow your technician's guidance precisely.
