Tenant Wants to Install New Faucets, Should I?

[James M.]

Hello,

I'm a fairly new landlord and this tenant has family members that are master plumbers. That's their background, but her request is to basically replace our bathroom faucets for some newer ones with no charge to me. The current ones do have some build up and they are quite old (came with the house 1986). My main questions are, should I trust this? How should I document this outside just emailing to confirm? Any litigation issues here?

No cost to me sounds great, but whatever she installs may be hard to get out, or cause leaks. Should I ask for the license of her relative?