Christopher Alexander's Towns Buildings Construction has a treasure trove of advice for your case. Applicable patterns that come to mind:

• House for a small family
• Intimacy gradient (rooms more distant from the entrance should be smaller and more intimate
• Couples Realm
• Connected Play and Children's Realm (the basic pattern is that all rooms/areas used by children basically (should) form a contiguous realm - simply because that's what will inevitably happen anyway. You will recognize it by the toys littering this connected area)
• Sleeping to the East
• Teenager's Cottage (this might be the minimum of what you might intend/do)
• House a for a single Person
• House for a couple
• Home Workshop
• Master and Apprentice
• Teenagers Society
• Public Outdoor Room (space between buildings should form 'outdoor rooms' with recognizable sides and 'doors/windows' instead of just gaps between buildings)
• Adventure Playground

See here for a list of the patterns: https://www.patternlanguage.com/apl/aplsummary.htm