Number of passes
The main factor. One or two passes is preventive work; it will not remove mould. Visible patches clear in 3 to 5 passes, heavy infestation needs 5 to 15. Every further pass costs less than the one before.
Mould treatment, room climate survey, cleaning
Prices and how they are calculated
We charge for the surface actually treated and for the number of passes your infestation really needs.
from €25/m²First pass over the affected surface. Every further pass cheaper.
Call-out from €150Zone A. Zone B from €200. Travel already included.
Preventive from €15/m²Treatment of visually clean surfaces in the same room.
Photo estimatePrice, number of passes and timing before the visit.
What determines the price
Four things, and all four are visible in a photograph. Nothing else goes into the calculation.
Treated surface
We count the surface we actually scrape and treat, plus a 5-10 cm margin around the patch. If there has been a focus in the room, the remaining surface goes at the preventive rate.
Access to the area
Height, stepladder, cramped space, work under a bath or behind an appliance. These are coefficients on the rate per metre: at the same size, a flat wall and a corner in a recess under the ceiling are different work and different time.
Ventilation
A bathroom with no window, a cellar with no draught, a flat that has been shut up. The product has to be left for its contact time, the room has to be force-ventilated, and the job takes longer.
Three treatment regimes
The regime is not a matter of preference, it follows the state of the surface. This is the most important thing on the page: both the result and the figure depend on it.
Preventive
€15-22/m²1-2 passes. No visible mould. We treat a visually clean surface that already carries spores: the other walls and the ceiling in a room with a focus, a flat before letting or after a long closure, a cellar or store room before patches appear.
No mechanical removal is needed, so the pass is cheaper. This regime cannot clear mould that has already grown.
Visible mould
€43-56/m²3-5 passes. Visible patches, black film, light blackening, dark joints, mould in a corner or on a window reveal. The first pass is mechanical removal of the mould and application of the product, then repeat passes until it is fully gone.
Typically: shower cubicle joints, a corner on a thermal bridge, a patch on a wall after a leak, window reveals.
Heavy infestation
€56-101/m²5-15 passes. Old, deeply ingrained mould, continuous blackening, infestation in a cellar or in a closed-up flat. One or two passes will not shift this at all: the product takes off the top layer while the mycelium stays in the substrate and grows back.
Typically: an unventilated cellar, a wall behind a fitted wardrobe, a flat left closed for a season or more.
Outdoor surfaces
individual quotefrom 10 passes. Facades, plinths, retaining walls, terraces, outside walls of houses. A rate per metre does not work here: rain and dew wash part of the product off, the work is done with a telescopic lance from the ground, and fewer than ten passes gives no result.
Treated zone up to 4 metres high. The quotation follows photographs of the wall. More below.
Why we wait 10-15 minutes after every 1-3 passes. The product needs its contact time: it has to get into the substrate and act before the next coat goes on. Pour it on back to back and you simply wash off the previous coat and pay for passes that did nothing. That is why a 10-15 pass treatment is not an hour of work but a full working day, sometimes two.
A single pass is not a "budget option" of the treatment, it is a different service. If there is visible mould on the surface, one pass will not remove it. We do not take that kind of job on a let's-see basis: either we do the number of passes needed, or we say honestly that at that price there will be no result.
The exact calculation: pass scale and coefficients
This is how the price is worked out in the written quotation. Nothing here is kept back.
Pass scale — base €25/m²
The first pass over the affected surface costs €25/m² and includes mechanical removal of the mould, the product, consumables and personal protective equipment. Every further pass is added at a falling rate.
Mechanical removal of the mould means taking off the topmost layer: with a brush and a cloth we remove the black film, the fluffy growth and loose particles from the surface, so the product reaches the substrate instead of sitting on dirt. We do not strip the finish, the paint or the plaster.
- 1 pass (with mechanical removal of the mould)€25/m²
- 2 passes (+10)€35/m²
- 3 passes (+8)€43/m²
- 4 passes (+7)€50/m²
- 5 passes (+6)€56/m²
- 6-10 passes (+5 per pass)€61-81/m²
- 11-15 passes (+4 per pass)€85-101/m²
Why every further pass is cheaper. The expensive part of a treatment is the first pass: mechanical removal of the mould, covering the furniture and the floor, mixing the solution, setting up access. All of that is done once. After that it is application of the product to an already prepared surface, and the price per pass falls.
A preventive pass over a visually clean surface is calculated separately: €15/m² for one pass and €22/m² for two. There is no mechanical removal there, hence the different base.
Working condition coefficients
Applied to the rate obtained from the pass scale. Each coefficient is a range, not a fixed figure.
- K1 — work from a stepladder, up to 3 m× 1.10-1.20
- K2 — telescopic lance from the ground, outdoor surfaces× 1.25-1.40
- K3 — cramped conditions, no room to turn× 1.10-1.20
- K4 — obstructed area: under a bath, under a basin, behind an appliance, in a recess× 1.15-1.30
- K5 — enclosed room, poor ventilation× 1.15-1.25
Where a job sits within a range depends on how pronounced the condition is: a stepladder at 2.2 m and overhead work at 3 m are a different 1.10 and 1.20. A bathroom with an opening window and a blind cellar with no extract are a different 1.15 and 1.25. The figure we use goes into the quotation and is justified there.
K1 and K2 are mutually exclusive. The others multiply, but they practically never all apply at once: in an ordinary flat one or two of them are in play.
Height limit: 4 metres. We work from the floor, from a stepladder, and outdoors with a telescopic lance from the ground. We do not use scaffolding, towers or platforms and we do not take on work above 4 metres. If the affected zone is higher, we say so straight away, before the visit.
If the calculation comes out above €110/m², the job moves to an individual quotation. We discuss it with you separately rather than invoicing from a formula that has left its sensible range.
Volume discount. Treating a whole room or flat uses the same scale, but on large surfaces the organisation of the work changes and the rate is revised in your favour: from 30 m² of total treated surface −10 %, from 60 m² −15 %, from 100 m² −20 %. The discount applies to the calculated total, before it is compared with the zone minimum.
Ventilation and air-conditioning grilles, ducts and similar items are quoted individually. They need mechanical cleaning of the profile and the edges, and the rate per metre is higher than usual.
How the surface is measured
This is the main source of disputes over a quotation, so we explain the rule in advance.
The calculation covers the treated surface
Not the floor area of the room, not the floor, not the whole wall. Only the surface from which we mechanically remove the mould and which we treat with the product.
The calculation always includes a margin of 5-10 cm around the visible patch. The mycelium goes beyond the edge of what the eye can see. Treat exactly to the outline of the patch and mould will come back along the edge of the treated area — and it will look as though the work was wasted.
Patch on a wall 40 × 60 cm
plus a 5 cm margin on each side
→ counted as 50 × 70 cm = 0.35 m²
Joints, seams and grilles are counted in linear metres
× the width of the treated strip:
grille 6.00 m × 0.25 m = 1.50 m²
(0.15 m slot plus 0.05 m of ceiling and wall on each side)
plus a 5 cm margin on each side
→ counted as 50 × 70 cm = 0.35 m²
Joints, seams and grilles are counted in linear metres
× the width of the treated strip:
grille 6.00 m × 0.25 m = 1.50 m²
(0.15 m slot plus 0.05 m of ceiling and wall on each side)
We have no minimum area. If the affected patch is very small, the surface is counted as it is — we do not round it up to a square metre to inflate the quotation. The final figure will simply hit the minimum call-out: travel, preparation and cleaning up afterwards cost the same whatever the size of the patch.
Why the whole room is treated, not just the patch
The most common misunderstanding when ordering. Let us settle it before you see the figure.
The visible patch is not all the mould
Where there is already a focus on the surface, spores are spread through the whole room. They settle on walls, on the ceiling, behind furniture and in places you simply never look at.
This is especially true of bathrooms, cellars and store rooms — rooms with high humidity and poor ventilation. In those, the whole surface is contaminated, even where nothing is visible. Treating one corner does not solve the problem: the cleaned area is recolonised from spores left half a metre away.
What is done in a room that has had a focus:
affected areas → 3-5 or 5-15 passes
mechanical removal of the mould and the passes needed, €43-101/m²
all the remaining surface → preventive, 1-2 passes
to kill spores on visually clean walls, €15-22/m²
affected areas → 3-5 or 5-15 passes
mechanical removal of the mould and the passes needed, €43-101/m²
all the remaining surface → preventive, 1-2 passes
to kill spores on visually clean walls, €15-22/m²
A real-world example. In a bathroom, people see mould in the corner above the shower — because that is where they wash and where they look. The real focus sits under the bath or behind the basin pedestal, where nobody looks for months. Treat the corner and you will see it again a month later and conclude that the treatment does not work.
That is why in wet rooms we treat this as a complete treatment of the room, not spot cleaning of a patch. In a dry, ventilated room with a local leak the rule is different: there we treat the area with its margin, and there is no need to go over the whole room.
Mould treatment and painting are two different things
They get confused constantly, and that is why people pay twice.
What our treatment does
The product does not damage plaster or paint and does not require opening up the finish. At the same time it does not only work on the surface: it penetrates the substrate and kills the mycelium and the spores rather than simply removing the black film.
The difference matters. Mechanical cleaning removes what you can see. If the mycelium stays in the substrate it will grow back through the same surface — and that is exactly why one pass is not enough.
Where the boundary lies
- We do not replace paintingIf a mark, staining or flaking paint is left on the wall after the mould is removed, that is restoring the finish. A painter does that; we do not.
- Painting does not replace treatmentPainting over mould, including with anti-mould paint, seals live mycelium under the coat. Weeks or months later it comes back through and the wall has to be repainted.
The right order: first identify and remove the cause of the moisture, then the treatment, and only then the decoration. In the reverse order the money spent on painting is lost.
Minimum call-out and travel zones
Travel, preparation of the work area and cleaning up afterwards are included in the minimum. We do not charge for the journey separately.
Zone A
call-out from €150- Ventimiglia
- Bordighera
- Sanremo
- Menton
- Roquebrune-Cap-Martin
- Monaco
- Beausoleil
- Cap-d'Ail
Zone B
call-out from €200- Nice
- Villefranche-sur-Mer
- Beaulieu-sur-Mer
- Saint-Laurent-du-Var
- Cagnes-sur-Mer
- Antibes
If the calculation by surface and passes comes to less than the minimum, the minimum call-out for your zone is charged. If it comes to more, you pay the calculation and the minimum no longer applies.
In individual quotations for jobs of a day or more, transport costs are shown on a separate line so that you can see what you are paying for.
Call-out surcharges. They do not depend on the surface, so they are fixed sums rather than a coefficient per metre: no vehicle access, equipment and water carried by hand — from €40; no water on site — from €25. We state both in advance from the address and your description of the access, rather than discovering them on site.
Cause diagnosis and room climate survey
A separate service. Treatment removes mould from the surface; if the cause of the moisture remains, the mould will return — and no number of passes will change that.
What we measure and calculate
- Air temperature and humidityMeasured in every affected room, under different ventilation regimes.
- Surface temperaturesWalls, corners, window reveals, ceiling, pipework. We look for the coldest points.
- Dew pointCalculated from the actual readings and compared with surface temperatures: on which surfaces exactly, and under what conditions, condensation forms.
- Thermal bridgesFloor slab lines, corners of external walls, the perimeter of window reveals, balcony slab junctions.
- VentilationPresence, direction and strength of draught in the ducts, whether the duct is clear, whether there is an outlet to the outside of the building.
- Sources of moistureLeak and infiltration, condensation on pipes, capillary rise from the floor, domestic moisture with no extraction.
What you receive
- A written reportThe cause of the mould, justified by the readings rather than "your place is damp". With the table of measurements and photographs.
- A humidity and ventilation regimeThe target humidity for your particular room, how often and how long to ventilate, whether a dehumidifier is needed and of what capacity.
- What to do about the causeWhat you can fix yourself and where a specialist contractor is needed — which one, and what their offer should contain.
- A forecast for the treatmentHow many passes it will take, and whether it makes sense to treat now or to deal with the cause first.
Price of the report
zone A — €150
zone B — €200
If treatment is ordered within 30 days,
this amount is credited against the work
zone A — €150
zone B — €200
If treatment is ordered within 30 days,
this amount is credited against the work
The report can be ordered on its own, without treatment. That makes sense if mould keeps coming back after someone else's treatment, if you are buying a flat and want to know where you stand on damp, or if the cause has to be put to a managing agent, a neighbour or an insurer.
What the report does not include. We do not do plumbing, roofing, insulation or ventilation works, and we do not issue court expert reports. We measure, calculate and explain the cause. Removing the cause is a specialist contractor's job, and we will tell you which kind.
On an ordinary treatment visit we identify the likely cause visually and tell you verbally: that is still included in the price of the work and is not charged separately. Instrument readings, dew point calculation and a written report are a separate service.
Cellars, store rooms and plant rooms
They are calculated on the same pass scale, but almost always fall into the heavy infestation regime.
Why a cellar costs more per metre
A cellar is an enclosed room with poor ventilation, so coefficient K5 (1.15-1.25) applies. Infestation there is usually old and needs 5 to 15 passes rather than 3 to 5.
A cellar is also almost always treated in full: a focus on one wall means spores on all the others. Affected areas follow the pass scale, the remaining surface the preventive rate. At that size the volume discount from 30 m² usually already applies.
A firm condition
Work in a cellar is only carried out if it is confirmed that the room can be ventilated to the outside of the building.
If there is no ventilation to the outside, the smell of the products used will travel into the building and into the flats. In that case we do not start work until the ventilation question is settled — and we say so before the visit, not on site.
If the ventilation grille has no draught, that is at the same time the cause of the mould: moisture is not removed from the room, and a return is inevitable however well the treatment is done. In that case it makes sense to start with a climate report.
Outdoor surfaces: facades, plinths, terraces
We work outside the building too, but the rate per square metre does not apply there.
Why individual quotation only
- At least 10 passesOutdoor infestation is years of growth in the open air. It does not clear with fewer passes.
- The weather works against the productRain and dew wash part of the applied coat off; the work has to be planned around the forecast and repeated more often than indoors.
- Work from the ground, up to 4 metresWe treat outdoor surfaces with a telescopic lance from the ground and from a stepladder. We do not use scaffolding, towers or platforms and we do not work above 4 metres. A zone above that line is not our work, and we say so straight away.
- Surface and substrateRender, stone, concrete, timber and paint behave differently and need different amounts of product.
How to get a facade quotation. Send photographs of the whole wall and close-ups, state the height of the affected zone above the ground and what stands against the wall — lawn, parking, terrace, shrubs. From that we give you the figure and the timing. If the infestation rises above 4 metres, we treat the lower part and tell you honestly that the upper part is a job for a contractor with scaffolding or a platform.
Cleaning of outdoor surfaces — paths, terraces, entrances, plinth from ground level — is charged at the hourly rate of €25/h, minimum 3 hours.
What the price includes
The full cycle, from covering the furniture to washing the floor afterwards.
Preparation
Inspection and photographs before treatment. Moving furniture, covering with film whatever cannot be taken out. Removing or covering curtains and textiles, covering the floor under the work area. Mixing the solution, setting up the stepladder, protective equipment.
Treatment
Mechanical removal of the film and loose material. Application of the product to the surface and the adjacent area with a margin. A 10-15 minute contact time after every 1-3 passes, then removal of residues. Repeat passes until the visible infestation is fully gone.
Finishing
Removing the covers, putting furniture and curtains back. Ventilating the room, washing the floor in the work area. Taking away film and consumables. Final inspection, photographs after treatment and recommendations.
Covering furniture is compulsory. All furniture, textiles and appliances in the work area are covered with polythene film. We work with chemical products and when treating walls and ceilings splashes are unavoidable — without covers, belongings will be ruined. Film and the covering work are included in the price; we do not charge separately for them.
If the infestation clears before the planned number of passes, the remaining passes are neither carried out nor charged: the figure is recalculated on the actual work. The reverse is also true: if more are needed, we stop and agree it with you before continuing.
Four worked examples
Real arithmetic on the same scale. Coefficient values are taken within their ranges according to the actual site conditions. Note the gap between a wet room and a dry bedroom — it explains almost all of the difference in the total.
A complete bathroom
Menton, zone A- Shower joints and ceiling corner, 5 passes2.00 m²
- 56 · K5 enclosed 1.20€67.20/m²
- Calculation: 2.00 × 67.20€134
- Area under the bath, 5 passes1.00 m²
- 56 · K5 1.20 · K4 obstruction 1.15€77.28/m²
- Calculation: 1.00 × 77.28€77
- Remaining walls and ceiling, preventive 2 passes17.00 m²
- 22 · K5 1.20€26.40/m²
- Calculation: 17.00 × 26.40€449
- 20.00 m² in total — no volume discount—
- To pay€660
A wet room is treated in full, and the focus gets five passes. Doing only the corner in two passes costs less, but the mould will come back both from spores on the neighbouring walls and from the substrate under the patch itself.
Bedroom wall after a leak
Roquebrune-Cap-Martin, zone A- Patch 1.60 × 1.20 m1.92 m²
- Plus a 10 cm margin1.80 × 1.40 m
- Surface counted2.52 m²
- Visible mould, 4 passes, no coefficients€50/m²
- Calculation: 2.52 × 50€126
- Minimum call-out, zone A€150
- To pay€150
A dry, ventilated room with a local leak: there is no need to go over the whole room. At that size the price is set by the minimum call-out, not by the rate per metre.
Cellar with old infestation
Nice, zone B- Wall and corner, continuous blackening, 8 passes6.00 m²
- 71 · K5 enclosed 1.25€88.75/m²
- Calculation: 6.00 × 88.75€533
- Remaining walls and ceiling, preventive 2 passes24.00 m²
- 22 · K5 1.25€27.50/m²
- Calculation: 24.00 × 27.50€660
- Calculated total€1,193
- 30.00 m² in total — volume discount 10 %−€119
- To pay€1,074
A cellar is the most expensive case per metre: enclosed room, old infestation, many passes. On the other hand the discount kicks in at that size. Work only starts if the cellar can be ventilated to the outside.
Flat closed up for a long time
Nice, zone B- Ceiling and window reveals, from a stepladder, 7 passes6.00 m²
- 66 · K1 height 1.15€75.90/m²
- Calculation: 6.00 × 75.90€455
- Hallway walls and corner, from the floor, 4 passes8.00 m²
- Visible mould, no coefficients€50/m²
- Calculation: 8.00 × 50€400
- Remaining surfaces of the two rooms, preventive 1 pass46.00 m²
- €15/m²€690
- Calculated total€1,545
- 60.00 m² in total — volume discount 15 %−€232
- To pay€1,313
A typical case for a flat left closed for a season. The foci get many passes, and all the remaining surface gets one preventive pass: otherwise the treated areas are recolonised from spores on the neighbouring walls.
Outdoor work — facade, plinth, retaining wall — is not in the examples: it is quoted individually, and the figure there is set by the method of access rather than by the surface.
Cleaning of premises, cellars and outdoor surfaces
Offered in addition to the treatment or on its own.
What we clean
Floors, dust, straightforward tidying of the premises, cleaning after guests or before an arrival. Cellars, store rooms and plant rooms. Outside: paths, terraces, entrances and the plinth from ground level. We do not remove construction waste and we are not a substitute for a building firm.
- Hourly rate€25
- Minimum3 hours
- Outdoor surfacesfrom the ground, up to 4 m
- Estimatefrom photos
What the treatment price does not include
- Opening up structures, removing grilles, cleaning ducts from the inside
- Painting, plastering, tiling and any finishing work
- Repairing leaks, plumbing, roofing, replacing insulation
- Instrument readings and a written climate report — a separate service
- Removal of construction waste
If infestation is found behind the finish or behind a grille during the work, we stop and agree the scope and price with you again.
Liability insurance
We work in other people's homes with chemical products. Our liability is therefore insured.
Allianz Actif Pro policy
- Public liabilityResponsabilité Civile Exploitation — damage caused to third parties during the work.
- Professional liabilityResponsabilité Civile Professionnelle — damage connected with the work carried out.
- Legal protectionDéfense Pénale et Recours suite à accident.
Insured: Tatiana Subbotina EI, 1 Place du Général de Gaulle, 06430 Tende. Insurer: Allianz, Dominique Desmet agency, Tende.
What this means for you
The insurance certificate (attestation d'assurance) is provided on request before work starts. To managing agents, syndics, letting agencies and owners — electronically, together with the quotation.
For work in residences and condominiums this is a standard requirement of the syndic: without a valid certificate a contractor is simply not let onto the site. We have one and we send it immediately, rather than promising to look for it.
Paperwork is issued by Tatiana Subbotina EI, SIRET 845 294 883 00028, APE 8121Z. VAT not applicable, art. 293 B du CGI.
3-month guarantee
We guarantee that the treated surface will stay clean for three months — provided the cause of the excess moisture has been removed.
If a leak has not been repaired, the ventilation does not work, or condensation keeps forming on the pipes, mould will come back regardless of how well the treatment was done. That is not a guarantee case, and we say so before the work starts, not after. That is exactly why we offer the climate report as a separate service: without understanding the cause, a guarantee becomes a lottery.
The guarantee covers the surface that was treated and the agreed number of passes. If you chose fewer passes than we recommended, or declined preventive treatment of the rest of the room, mould returning is not a guarantee case. We record that decision in the quotation in writing — so that there is no later argument about what was agreed.
The period is counted by actual use of the premises. If it concerns an air-conditioning system and it was not running during that period, no condensation formed in the ducts, and the absence of mould proves nothing.
How to get a quotation
From photograph to written calculation — usually the same day.
Photo
Send photographs of the affected area, if possible a general view and a close-up. For a bathroom, a cellar or a facade, photograph the whole room or the whole wall, including under the bath and behind the basin.
Calculation
We state the number of passes, the surface counted, the rate, the final figure and the timing. If the photo leaves a doubt we ask, rather than building a margin into the price.
Quotation
We issue a written quotation with a description of the work, surfaces, number of passes and a line-by-line calculation. On request the insurance certificate is attached.
Visit
We agree a date. On site we check that it matches the photographs: if the scope or the number of passes is smaller, we recalculate in your favour.
Common questions about price
How many passes does my case need?
1-2 passes is preventive work on a visually clean surface only. Visible patches, black film and light blackening need 3-5 passes. Heavy, old infestation needs 5-15. Outdoor surfaces need at least 10. We state the number of passes from your photographs before the visit and confirm it on site. If the infestation clears earlier, the remaining passes are neither carried out nor charged.
Why do 5 passes not cost 5 times as much?
Because the first pass is the expensive one: it includes mechanical removal of the mould, covering the furniture and the floor, mixing the solution and setting up access, and all of that is done once. After that only the application of the product to an already prepared surface remains. That is why the second pass adds €10/m², the third €8, the fourth €7, the fifth €6, and the sixth to tenth €5/m² each.
Why can you not give an exact price without a photo?
Because the price is calculated from the number of passes and the surface, with coefficients for height, cramped conditions, obstruction and ventilation, and all of that is only visible in a photograph. At the same size, a flat wall and a corner under the ceiling behind a fitted wardrobe are different work and different time. A photograph shows the surface, the access, the ventilation of the room and the degree of infestation — that is, every component of the price. It is quicker and more honest than naming a figure at random and then changing it on site.
Why treat the whole bathroom and not just the mouldy corner?
Because where there is a visible focus in the room, spores are spread across the whole surface — including the places you never look at: under the bath, behind the basin pedestal, behind the washing machine. A very common case: someone cleans the mould in the corner above the shower and it is back a month later, because the real focus was under the bath. So the affected areas get the number of passes they need, and the whole remaining surface gets a preventive treatment of 1-2 passes at €15-22/m².
Does the treatment damage paint and plaster?
No. The product does not damage the finish and does not require opening up the plaster. At the same time it does not merely remove the black film from the surface: it penetrates the substrate and kills the mycelium and the spores. That is exactly why the treatment works where ordinary cleaning lasts a fortnight.
Would anti-mould paint not be simpler?
No. Paint over live mould seals the mycelium under the coat but does not kill it. Weeks or months later the patch comes through the new paint and the wall has to be repainted — over an already spoiled coat. The right order: identify and remove the cause of the moisture, treat, and only then paint.
Do the furniture and belongings have to be taken out?
Taking them out is not compulsory, covering them is. All furniture, textiles and appliances in the work area are covered with polythene film: we work with chemical products and when treating walls and ceilings splashes are unavoidable. Without covers, belongings will be ruined. Film and covering are included in the price. Whatever can be taken out is better taken out: it is quicker.
The patch is tiny, why still €150?
Because travel, preparing the work area, materials and cleaning up afterwards cost the same whether it is 0.5 m² or 3 m². The minimum call-out covers exactly that. If you have several small areas in different rooms, it makes sense to do them in one visit: the surfaces add up and the minimum stays single.
Do you treat cellars and outside walls?
Yes. Cellars and store rooms are calculated on the same pass scale with the enclosed room coefficient — provided the cellar can be ventilated to the outside of the building. Outdoor surfaces (facades, plinths, retaining walls, terraces) are quoted individually: they need at least 10 passes and the weather washes part of the product off. Outside we work with a telescopic lance from the ground and from a stepladder, up to 4 metres high. We do not use scaffolding, towers or platforms and we do not take on work above 4 metres.
Why order a climate survey if you can simply treat?
If the cause of the moisture is not removed, mould will come back — at any number of passes. The report is worth ordering when mould has already returned after a treatment, when it is unclear where the moisture comes from at all, or when the cause has to be put to a managing agent, a neighbour or an insurer. It costs €150 in zone A and €200 in zone B, and it is credited against the treatment if you order it within 30 days.
What if there is more on site than in the photo?
We stop and agree the new scope with you before continuing. We cannot quietly increase the figure at the end. The reverse is also true: if the infestation is smaller, or clears in fewer passes, the price is recalculated on the actual measurement.
Do you work with managing agents and agencies?
Yes. For managing agents, syndics and letting agencies we issue written quotations with a line-by-line calculation and before and after photographs — in a form that can be attached to a report to the owner or to correspondence with an insurer. The Allianz insurance certificate is supplied with the quotation.
Do you work in Monaco and in Italy?
Yes. Monaco is in zone A, minimum call-out €150. The Italian side — Ventimiglia, Bordighera, Sanremo — is also zone A. Paperwork is issued by Tatiana Subbotina EI, SIRET 845 294 883 00028.
If you own the property and you are not in the country
A large share of our work comes from owners who are somewhere else when the problem appears.
How it usually starts
A tenant sends a photo of a black corner. A neighbour mentions a smell. Or you open the shutters in spring and find the cellar wall covered.
You are in London, Dublin, Frankfurt or Little Rock, and you need someone on the Riviera to look at it, price it honestly and actually turn up. That is a normal working situation for us, not an exception — our very first job of this kind came from an owner in the United States whose house in Menton had mould in the cellar.
How we handle it
- Nobody needs to be present for the estimateEverything starts from photos. You or your tenant send them, we reply with the number of passes, the surface counted and the final figure.
- Access can be arranged with anyone you nominateA tenant, a neighbour, a concierge, a letting agency or a syndic. You tell us who holds the keys and we agree the time directly with them.
- You see the result without being herePhotographs before and after, with the areas and the line-by-line calculation, in a form you can forward to a tenant, an owner or an insurer.
- Straightforward paperworkBank transfer, invoice issued by Tatiana Subbotina EI, SIRET 845 294 883 00028. VAT not applicable, art. 293 B du CGI. Insurance certificate on request.
A closed-up flat is the classic case for the preventive regime: when we are already on site for one mouldy corner, treating the remaining surfaces at €15/m² is what stops the same call happening again next spring.
We speak English, French and Russian. Write in whichever is easiest — e-mail, SMS or WhatsApp — and mention the town, because the town sets the minimum call-out.
Send a photo and get a calculation
Send a photo of the area, your town and the approximate size. We reply with the number of passes, the rate, the final figure and a possible date.