This style of architecture became quite popular in the United States between the 1890's and 1940's. Interiors, because they are small, can give a cluttered but utterly functional appearance, with artistic niches and nooks, and knick-knick decor. Cottages are designed for a relaxed, simple lifestyle - places to come home to, kick off your shoes, and flop on the furniture. They are not designed to impress other people, but to make their owners feel good. Cottage living often involves gardening, and most cottage owners spend their weekends and vacations outside in their backyards, digging in the dirt and growing flowers and vegetables.
It is wise to speak to your architect about potential roadblocks in the project and about any other extras that are likely to be added to your bottom line figure. You may also want to discuss anything that your architect may think is a better design choice.
Eaves are usually large and overhanging. Small ranch house plans tend to be simple rectangles; but there are larger designs which can be have L or U shapes surrounding a courtyard in the center visible from the living areas. Frequently there are sliding glass doors which open onto patios, or large picture windows in the living and dining areas. The design often includes an attached garage as well as patio area. Also, the exteriors are usually of brick, wood, or stucco with simple or rustic interior décor and exterior trim.
A few questions you will need to answer will include: how many bedrooms, whether or not to have a family room, if a separate study room is valuable, and if internal garage access will be important. Plans come in both 2D and 3D versions for you to review before building begins. You will want to go over these with a fine toothed comb, as changes are much easier to make on the blue prints then once actually constructed on the ground.