Are things like landscape services essential expenses?

In terms of whether they are factored into the ordinary and customary spousal support and child support figures, probably not. Child support and spousal support don’t even incorporate what is needed, much less a bunch of extras. If such a service has always been a part of your lifestyle, it makes sense to continue it as a regular and customary expense. Also, if having that sort of hired help would assist you in preparing your home for sale, or if it is essential to have someone do those chores because your new status as a single parent leaves you with less free time, you can always include the amount in your budget and bring it up in your negotiations. Most of my clients are very reasonable with each other about the additional expenses they require as they transition from married to single life.