It keeps coming back because nobody has fixed what's causing it.
The damp isn't mentioned
Mould grows where water gets in or can't get out – and that's the part a landlord has to fix.
Painted over
It looks resolved for a few weeks and comes back in the same place, which is the pattern worth recording.
No dates
'It's been going on for ages' is much weaker than four dated reports and two failed repairs.
Reported by phone
Verbal complaints leave no record of what you asked for or when you asked.
What you get
Everything you need to make the problem visible on paper.
6 things to document
Photos with dates, where it is and how far it's spread, any leak or condensation you can see, what the ventilation is like, every report you've made, and what was done in response.
3 letters
A first written report, a follow‑up when the same spot returns, and a firmer one that asks for the cause to be found and fixed rather than the surface cleaned.
Cause or symptom
How to describe what you're seeing in a way that points at a leak, a failed seal, a broken extractor or a cold external wall – so it reads as a repair rather than housekeeping.
If nothing happens
The agent or owner above the manager, then your local council or housing authority, and the tenants' advice service where you live – with what to include at each step.
How it works
From a stain that keeps coming back to a file and a letter in 2 minutes.
1
Answer 5 quick questions
What it looks like and where, how long it's been there, what you've reported and when, what was done, and whether anyone in the flat has breathing problems.
~2 minutes
2
AI builds your plan
Custom HTML with what to document, the three letters, how to describe the cause, the escalation path, and a fortnight's plan.
~30 seconds
3
Photograph it today
Wide shot and close‑up, with something showing the date, and write down every time you've reported it – before anyone paints over it again.
5 minutes to begin
6
things to document before you write anything
3
letters provided
14
day action plan
1
cause to name in the letter
Questions
Everything you need to know.
Is this legal advice?
No – it's help with documenting and communicating. What a landlord is obliged to do about damp and mould differs by country, and often by city, and whether a particular situation breaches those rules is a question for a tenants' advice service, a housing officer or a solicitor. This gets your evidence and your letter in order before you get there.
Does mould automatically mean the flat is unfit?
Not automatically, and the standards vary by where you live. What tends to carry weight is a pattern rather than a spot: the same area returning, a visible leak or failed ventilation behind it, and a record of reports that weren't acted on. That's why the letter should describe the cause, not just the stain.
Should I clean it myself?
A small patch, yes, with ventilation and gloves – and photograph it first. Large areas, anything on plaster or ceilings, and anything connected to a leak are not a tenant's job to clean, and doing it yourself can make it look resolved when it isn't. If anyone in the flat has asthma, another respiratory condition or a weakened immune system, don't disturb it at all – mention that in writing to the landlord and speak to your doctor.
Do I have to let them in to inspect it?
Generally you're expected to allow reasonable access for inspections and repairs, and refusing tends to weaken your position. Keep it cooperative and in writing: confirm appointments by message, note who came and when, and record what was actually done. Access you've agreed to is also evidence that you've been reasonable.
What if they retaliate after I complain?
Document it – dates, what changed, what was said, in writing. Retaliation against a tenant for raising a repair issue is taken seriously in many places, though the protections differ. That's the point to contact a tenants' advice service or housing charity rather than handling it alone.
Reviews
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