New build floorplans - opinions welcome

[Iceverge]

51 minutes ago, Indy said:

Vaulted ceilings in the master bedroom and front 2 rooms (to give the idea of height and counteract the sloping roofs on either side)

Normal roof in the middle part of the house - this gives it a little bit of storage space (boxes, suitcases etc) and also space to vent the MVHR system

 

Sounds like a good compromise. I'd keep the MVHR in the plant room for noise and serviceability. Run the ducts through the  first floor posi joists for the ground floor and up through the attic and into the  bedrooms etc for the first floor. Make it all a warm roof with a glulam ridge beam and cellulose filled I joists. It'll make it easy to route services and deal with airtightness.