Mould Removal in Prague: 2026 Costs & How to Hire

What Does Mould Removal Cost in Prague in 2026?

Mould removal in Prague typically costs between 3 000 and 15 000 Kč for a standard residential job in 2026. The final price depends on the size of the affected area, the type of mould, whether the underlying cause needs structural repair, and how accessible the affected surfaces are. For severe infestations covering multiple rooms or requiring remediation of hidden mould behind walls, costs can climb to 20 000–40 000 Kč or more.

If you're an expat living in Prague and you've spotted black patches on your bathroom ceiling or a musty smell in your bedroom, you're not alone. Mould is extremely common in Czech apartments — especially in older panel buildings (panelák) and historic brick buildings with poor ventilation. This guide covers realistic 2026 prices, what to expect from the removal process, and how to find an English-speaking mould removal specialist in Prague.

Mould Removal Price Breakdown: 2026 Prague Rates

Prices vary significantly depending on the scope of work. Here's what you can expect in the Prague market:

Small surface treatment (under 5 m²) — 3 000–6 000 Kč. This covers cleaning visible mould from walls or ceilings with professional-grade antifungal agents and applying a protective coating.
Medium job (5–15 m²) — 6 000–12 000 Kč. May involve removing affected plaster, treating the substrate, and replastering.
Large or deep infestation (15+ m²) — 12 000–25 000 Kč. Often requires removing drywall, insulation, or other materials that harbour mould internally.
Full remediation with cause repair — 20 000–40 000+ Kč. Includes fixing the moisture source (leaking pipe, failed waterproofing, condensation issues) plus complete mould removal and surface restoration.
Professional mould inspection/assessment — 2 000–5 000 Kč as a standalone service, sometimes waived if you proceed with the same company for removal.

These prices typically include labour and basic materials (antifungal treatments, primers). Replastering, repainting, or replacing building materials is usually quoted separately. Always ask for an itemised written quote before work begins.

What Affects the Price?

Several factors push mould removal costs up or down:

Mould type and severity — surface mould (often green or white) is cheaper to treat than deep black mould (Stachybotrys) that has penetrated porous materials.
Location in the home — bathrooms and kitchens are usually straightforward. Mould behind built-in furniture, inside wall cavities, or in crawl spaces takes longer and costs more.
Root cause — if the mould is caused by condensation, improving ventilation may be simple. If it's caused by a leaking roof or rising damp, the structural repair adds significantly to the total cost.
Building type — Prague's panelák apartments often have thermal bridges at panel joints that cause condensation. Historic buildings may have moisture issues from old foundations. Both require specialist approaches.
DPH (VAT) — most professional mould removal companies charge 21 % DPH on top of quoted prices. Always confirm whether a quote includes or excludes DPH.

Why Mould Is So Common in Prague Apartments

Prague's climate and building stock create a perfect environment for mould growth. Understanding the cause is essential — if you remove mould without fixing the underlying problem, it will return within weeks.

The Main Causes

Poor ventilation — Many Czech apartments have sealed plastic windows (often installed during EU-funded renovations) that eliminated natural air exchange. Without regular větrání (airing out), humidity builds up fast.
Thermal bridges — In panelák buildings, the joints between concrete panels conduct cold from outside. These cold spots attract condensation, especially in winter, and mould thrives on the moisture.
Leaks and rising damp — Older buildings in Prague's centre often lack modern damp-proof courses. Leaking roofs, cracked pipes, and poor bathroom waterproofing also feed mould.
Lifestyle factors — Drying laundry indoors, cooking without extraction, and keeping heating too low in winter all increase indoor humidity. Czech energy prices have pushed many households to under-heat, which worsens condensation.
Insufficient insulation — Exterior walls in buildings from the 1960s–1980s were not designed for modern thermal comfort. Cold walls mean condensation and mould.

A good mould removal specialist won't just clean the surface — they'll identify the moisture source and recommend a permanent fix. If a contractor offers to "just paint over it," that's a red flag.

How to Find a Mould Removal Specialist in Prague

Finding an English-speaking mould removal professional in Prague takes a bit of effort, but it's entirely doable. Here's a practical approach:

What to Look For

Experience with Czech building types — A specialist who understands panelák thermal bridges or historic building moisture issues will give you better results than a general painter who "also does mould."
Diagnostic approach — The best professionals will inspect the moisture source before quoting. Be wary of anyone who quotes a price from photos alone for anything beyond a small surface patch.
IČO (company registration number) — Ask for the tradesperson's IČO and check it against the Czech business register at ares.gov.cz. This confirms they are a registered business entity in Czech Republic.
Written quote — Always get a written quote (cenová nabídka) detailing the scope of work, materials, timeline, and whether DPH is included. This protects you if disputes arise later.
Warranty on treatment — Ask whether the company offers any guarantee on the treatment. Reputable specialists often provide a 1–2 year warranty against mould recurrence, provided you follow their ventilation advice.

Questions to Ask Before Hiring

What do you think is causing the mould, and will you fix the root cause or just treat the surface?
What products and methods will you use? (Professional biocides are more effective than household bleach.)
Do I need to vacate the room during treatment? Some chemical treatments require ventilation time.
Will the quote include replastering and repainting, or is that separate?
How long before I can use the room again?

DIY vs. Professional Mould Removal: When to Call a Pro

Small patches of surface mould on bathroom tiles or silicone sealant can often be handled with over-the-counter antifungal sprays available at any Bauhaus or Hornbach in Prague. But there's a clear line where professional help becomes necessary.

Call a professional if:

The affected area is larger than roughly 1 m² (about the size of a bath towel)
Mould is on plaster, drywall, or wood — not just tile surfaces
You can smell mould but can't see it (it's likely behind walls or under flooring)
The mould keeps returning after you've cleaned it
Anyone in the household has respiratory issues, allergies, or a weakened immune system
You suspect the cause is structural (leaks, rising damp, insulation failure)

For anything involving hidden mould, structural moisture, or health concerns, always consult a professional. Disturbing large mould colonies without proper containment can spread spores throughout the apartment and make the problem significantly worse.

Mould and Renting in Prague: Who Pays?

This is one of the most common questions from Prague expats. The short answer: it depends on the cause, and disputes are common.

If the mould is caused by a building defect (leaking roof, failed waterproofing, thermal bridges) — the landlord is generally expected to address and pay for the repair. Document everything with photos and written communication.
If the mould is caused by tenant behaviour (not ventilating, drying laundry indoors, blocking radiators with furniture) — the landlord may argue the tenant is responsible.
In practice — many landlords in Prague will try to blame the tenant regardless of the cause. Get an independent assessment from a mould specialist who can identify the root cause. Their written report can help resolve disputes.

We recommend getting professional advice specific to your situation. A written assessment from a mould specialist carries weight in any negotiation with your landlord or property management company.

Preventing Mould from Returning

Professional removal is only half the battle. Without addressing the root cause and adjusting habits, mould will return. Here are the most effective prevention measures for Prague apartments:

Ventilate daily — Open windows for 5–10 minutes, two to three times a day, even in winter. Short, intense airing (průvan / cross-ventilation) is more effective than leaving a window slightly open all day.
Keep indoor humidity below 60 % — A basic hygrometer (available from 200 Kč at Czech electronics stores) helps you monitor this. If humidity stays high, consider a dehumidifier.
Don't push furniture flush against exterior walls — Leave a 5–10 cm gap to allow air circulation behind wardrobes and beds on cold-facing walls.
Use extractor fans — Run bathroom and kitchen extractors during and after showering or cooking. If your apartment lacks them, a professional can install one for 3 000–8 000 Kč.
Address thermal bridges — Interior insulation panels on cold walls can eliminate condensation spots. This typically costs 1 500–3 000 Kč per m² installed.
Fix leaks immediately — Even a small drip behind a washing machine or under a sink creates enough moisture for mould to establish in days.

Post Your Mould Removal Job on TraderPoint

If you're dealing with mould in your Prague apartment or house, you can post your mould removal job on TraderPoint to receive quotes from local professionals. Describe the affected area, upload photos if possible, and tradespeople will reach out with pricing. TraderPoint verifies traders' phone numbers and email addresses, and traders can optionally add their Czech IČO for you to check against the business register. Comparing multiple quotes is the best way to ensure you get a fair price.

Key Takeaways

Mould removal in Prague typically costs 3 000–15 000 Kč for standard jobs, with severe cases reaching 20 000–40 000 Kč+
Always identify and fix the root cause (ventilation, leaks, thermal bridges) — surface cleaning alone won't solve the problem
Prague's panelák and historic buildings are especially prone to mould due to thermal bridges and poor ventilation
Get a written quote and check the specialist's IČO at ares.gov.cz
For areas larger than 1 m², recurring mould, or hidden mould — always hire a professional
In rental situations, document everything and get an independent assessment to clarify responsibility
Prevention is cheaper than removal — ventilate daily, monitor humidity, and fix leaks fast