My ideal minimum is 20 sqm each for bedrooms, sala, kitchen, dining and utility areas, 8 - 10 sqm for T&B, and 48 sqm for garage, 3 meters easement front and 2 meters for the other 3 sides and all of these in a bungalow set up. Bonus na lang kung may loft, so need to allocate for stairs also.

As for budget, to give you an idea, a new construction in front of me costs 40/sqm, with no fence, gates and landscaping and probably a simple kitchen. So sakto ang 50k to complete everything including additional fixtures or upgraded finishing specs.

For a 2 storey 200 sqm house 6 - 8 months is enough if the contractor has enough people.