A water mark or mould patch is a reason to investigate, not enough information to diagnose the cause. The Council damp, condensation and mould guide identifies several possible sources of damp, including leaking pipes and roofs, damaged guttering and walls, rainwater and condensation. Do not accept “just condensation” or “definitely rising damp” without appropriate investigation.
What is condensation?
The council explains that moisture in air can condense on cold surfaces such as windows and walls. If moisture builds up and cannot escape, damp and mould can follow. It identifies moisture production, insufficient ventilation and insufficient heating as contributing factors. That explanation is general; it does not identify what is happening in a flat from a viewing photograph.
What should you ask at a viewing?
- When did the marks appear, and have they returned after cleaning or decorating?
- Have there been plumbing, roof, gutter or external-wall repairs?
- What ventilation exists in kitchens and bathrooms, and is it working?
- Are there survey reports, contractor findings, guarantees or invoices?
- Have neighbours or the factor reported related issues?
Take those answers to your surveyor. Do not carry out invasive tests or assume a product will fix the problem before the cause is understood.
Read the Home Report carefully
mygov.scot describes the single survey as a visual inspection. Look at what was accessible, the repair recommendations and the date. If further investigation is recommended, ask what should be done before committing. Obtain estimates for urgent work or work needing future attention where appropriate, rather than relying on a guessed “typical damp-treatment cost”.
Could the repair be shared?
If the issue concerns common parts such as the roof or external walls, your title deeds and the applicable repair rules matter. They determine responsibility and cost sharing; the presence of damp does not by itself decide who pays. Ask your solicitor about relevant notices or agreed works.
Do not confuse council-tenant help with a buyer’s entitlement
The council’s household guide includes reporting and repair arrangements for its tenants. Those are not a promise that the council will repair a privately owned flat. Private owners can seek the Shared Repairs Service’s advice on common works. For a local example, look at Marchmont Road and its conservation map; neither diagnoses damp at an address.
Questions buyers ask
Can a photograph distinguish damp from condensation?
Not reliably for a purchase decision. The council lists several possible moisture sources; ask a qualified surveyor to investigate the particular property.
Does mould always mean a leaking roof?
No. The council lists condensation and several building defects among possible causes. A specific diagnosis needs investigation.
Does the street lookup tell me who pays for damp repairs?
No. Responsibility depends on the defect, the affected part of the building and the title deeds or applicable rules, not the heritage lookup.
General information from open data, not legal advice. Confirm the details with the council, Historic Environment Scotland or your solicitor.
Not legal advice. This is a plain-English summary of official sources to help you know what to ask. Every property is different, so check the details with your solicitor, surveyor or the council before you rely on it.
Related
EH9 postcode area · Roof and common repairs · Home Report validity · Browse postcode areas · Search a street
Compare two streets · The Edinburgh flat buyer’s checklist · Data sources and limitations
Official sources
Checked 6 November 2026. Council damp, condensation and mould guide · mygov.scot Home Report guidance · mygov.scot common-repair responsibility. Summaries are our wording; check the originals for your property.