94949 includes Bel Marin Keys, the Country Club, Ignacio, Loma Verde, Hamilton, and Pacheco Valley...essentially Southern Novato. It's a better commute location if you're commuting to central or southern Marin or to San Francisco. 94947 is central Novato, and there is a varying variety of homes and price ranges. In general, most of the homes in this zipcode are within a short or reasonably short distance of the freeway. 94949 is northern,northeastern,and northwestern Novato with some areas being 10-15 minutes from the freeway.
All of the areas have homes of various ages, sizes and prices.