
Downstairs Neighbor is selling condo - wants us to hire plumber to check whether our toilet is leaking
Edgewater Neighborhood - 8 Unit, 3 Floor Greystone - Self-Managed HOA (For Context)
Our downstairs neighbor is selling their condo after living there for about 2 years. The condo is currently contingent, and the buyer's inspector noticed some localized paint blistering/bubbling on the ceiling of their guest bathroom (see picture).
We are told the ceiling is not damp.
Our floorplans are nearly identical. Our guest bathroom sits atop theirs. We checked and do not see any sort of leak anywhere, toilet or otherwise.
Neighbor said they've never noticed the area in the time they lived there, though admitted it is the guest bathroom which they don't use very often.
They said they consulted with a plumber who thinks that the source is our toilet. They asked when the last time our toilet was reset. Plumber thinks seal is broken, and recommends we hire a plumber to confirm. He's happy to check for us, but says it would be on our dime.
Curious if anyone has dealt it, if it's possible we could have the issue despite not seeing anything around our level. And also best way to proceed, as I know they are motivated to move/sell, and I don't want us to needlessly get caught up in anything (where we agree to spend money and it ultimately results in nothing wrong).