ᐅ Planning a Single-Family Home, Room Layout, Opinion on the Floor Plan

Hello everyone,

First, a brief introduction about us.
We are a family of four: two adults and two young children.

Key details about our building project:

• Solid construction house, 10x10m (33x33 ft)
• Ground floor: kitchen, bathroom with shower and toilet, living room, dining room
• Upper floor: master bedroom, child 1, child 2, bathroom
• 1 to 1 attic level (knee wall 1.5m (5 ft))
• 35° gable roof / oriented north-south
• fully basemented
• Garage in the basement with a terrace above
• Carport on the east side

We are currently planning our construction project. At the moment, we are trying to find the optimal layout for our ground floor and hope you can provide some good tips, suggestions, or feedback.

We are still uncertain about the guest room / playroom.
Our idea is to initially use the guest room as a playroom for the children, where all their toys are kept. When the children are older, we want to convert it into a guest room or utility room. Later, when the children are over 18 or if we want to have all bedrooms on one level, we could move the master bedroom from the upper floor to the basement.

Attached are two floor plan examples I have sketched:

In the second floor plan, the playroom would be adjacent and open to the living room.
If it were later to be used as a guest room, a wall would have to be added afterwards.

Advantage: larger living room when it is no longer used as a playroom.

What do you think about the two floor plans? Pros and cons? Or something completely different?

PS: The kitchen should remain as it is.

Thank you in advance for your help.

Regards,
November2012