Overall, looks good to my non-professional eye, except I think the combination of fountain and counter (?) sticking out onto the patio might make the space feel crowded and impede traffic flow. Can you ditch the counter that juts out? How about incorporating the fountain into the raised planting bed?

It would be helpful if you can orient the plan -- which way is north? And what part of the country is this property?

Are the rectangles in the back right of the lawn stepping stones? I've never had much luck trying to set stepping stones into the lawn. I'd suggest a normal path along the edge of the bed back there that will then serve as a divider between the bed and lawn.

Which back exit is near the kitchen? Is that the one closest to the BBQ area? What is the distance between the BBQ and the seating? Looks like it may be a bit far but I'm not sure I'm reading the drawing correctly.

Is the firepit going in on the left of the patio? Is that seating around that area? I'd recommend a permanent firepit as most of the portable ones are too small to hold a real fire. You'll also want to consider somewhere to store a small amount of wood to supply the fire.

@Whitewatervol - yes. the rectangles in back right will be a stepping pathway (something contemporary looking - e.g long rectangle slabs). The kitchen is smack in the middle; somewhat equidistance from both openings to the backyard.

The firepit will be in the left of the patio with seating around it. I haven't yet decided wether to go with permanent seating (concrete) or patio furniture around the firepit area. We long narrow stretch on left will be storage area with a shed etc.

@einportlandor - the property is in the bay area (san francisco suburbs) in California. We hope to use the outdoor space most time of the year.