I don't adapt the fee.
I worked as a dom and BDSM provider and would charge sissies and chore slaves the same general BDSM rate as my other punters. You may find a lot of chore slaves who approach you are wankers so vetting is important.
The fact they are doing chores isn't relevant to my fee. They often suggest they're doing you a big favour and it should be free or reduced. I disagree. They can be needy and draining.

Sissies- if it involves me assisting preening, dressing up, wigs and makeup I charge a higher fee as more involved.

(Sissies and chore slaves as pretty much my least favourite clients and I'd rather not entertain them.)

I have some guys who will  happily just do chores for me for free. If they want a session they still have to pay my normal rate. They may get some extra treats.

It's up to you, but they should be paying you and I'd charge my normal rate too. If a punter is in my flat then that means no other punter can be, so it makes no odds to me whether he's shagging or cleaning the oven .

I've usually charged half rate, I've had a few of them and they were all genuine, some young some old.

Thank you for all the feedback tho really helpful xx

I stopped doing doubles with other providers that didn't quite meet my standards. That sounds awful but I have had MANY doubles where the other provider was chosen by the client and more likely the set up wound up like this  and I got fed up with it: the SW was inexperienced to what the session required (always elements of BDSM), I would have to orchestrate the whole session, the session would normally take place at my incall and more than once the SW showed up without even bringing her own resources meaning she used my condoms, lube, toys and even my towels to go for a shower before and after.

Now, I don't mind some of that if it is a SW I know and know they aren't purposefully taking the piss. But when I don't even know the SW and she shows up doing all of that AND I know she's been paid more than me, that doesn't sit well with me.

I no longer allow doubles on those basis and if I did, for some obscure reason, I would double my rate.

For domestic slaves, I don't waste my time unless they are paying my full rate like others have said. Aside from the reason stated above of not being able to have a client in whilst they are in, they generally want for me to stand over them, fully made up and ordering them about. That is a session to me. I deserve to be paid. If not, I'd rather just roll my sleeves up and do the cleaning myself.

Thank you ladies all very helpful advice xx