To build a wooden dollhouse with plans, choose a scale for the dollhouse size to fit the dolls it accommodates, such as 1 inch for every real-life foot in a normal house. Decide on the size and shape of the house.
The easiest dollhouse to construct is a one-story cottage-style home, but there are many styles from which to choose. It is a good idea to create paper patterns to use when cutting the wood and include windows and doors as needed. A one-story cottage requires at least six pieces — a base, three walls and two roof pieces for an angled roof — while a two-story house requires a second floor and possible room divider pieces.
Use 3/4-inch plywood for the base of the house and 3/8-inch plywood for the walls and the roof. Mark the outline for each cut using the pattern paper. Cut the wood either by hand or using a circular saw, but cut the windows and doors by first drilling holes in the corners of each one first for a more accurate cut. Sand down all the edges, and smooth any rough portions of the wood to prepare it for assembly. Join the walls to the base and the roof to the walls using wood glue and nails.
Sand again over the dried glue and nails. Paint the house and add trim details as desired.