Hello Peter,
basically, you should consider that all outdoor lamps and especially outdoor sockets should be switchable from inside. Best with a switch with a control light - that makes forgetting a bit more difficult.
I don't see a symbol for a ceiling light fixture in the attic. Is that actually the case (intended), or was it just forgotten to be drawn in? From the sockets in the attic, I would make double sockets now (if it might possibly be expanded sometime). The door in the attic will probably not be feasible like that. As far as I know, doors that lead directly to a staircase (going down) are not permitted according to building regulations.
Upstairs I would consider the following:
Parents’ bedroom: I would enlarge the double socket next to the bed to at least a triple socket. Now it is already fully occupied with a bedside lamp and a radio alarm clock. Having a light switch for the main lighting by the bed is also worth considering. In the dressing area (?) I would also make the single socket at least a double socket. Closet lighting,...
Children’s room: In my opinion also somewhat tight with socket supply. I would plan at least 2 - 3 additional sockets here.
Bathroom: Only one socket next to the sink? What electrical devices do you have in the bathroom? Razor, hairdryer, electric toothbrush, radio,... One socket in that area is too few for me. If you might later upgrade to one of these new toilets that clean the user with water, I would also have a socket and water connection installed in the toilet area. In the hallway and bathroom, you could also consider a socket with integrated LED night light (orientation light) - then you don’t have to turn on the "floodlight" on the ceiling at night if you need to go to the bathroom...
Ground floor:
In the kitchen, "only" two free sockets seem a bit tight to me personally. In the living room, two sockets next to the satellite connection might also be expandable. TV, DVD player and all are occupied. What about a possible satellite receiver, hard disk recorder, surround system? Even if not everything is there yet, there certainly won’t be fewer devices...
In the basement really only two sockets for washing machine and dryer and no others?
All in all, you have planned very conservatively, especially as far as sockets are concerned in my opinion. Of course, this can still be changed later, but if I compare the additional cost of one or two more sockets per room with the effort and mess of retrofitting, I know how I would decide.
I would have a high-voltage connection (recommended with 32 A) installed once in the garage and once in the basement.
Regards,
Dirk