Construction expenses are usually split up into "soft" and "hard" costs. The soft costs consist of design, drafting, planning, engineering, and other pre-construction requirements. In addition, they include all permit and plan check fees, which can vary widely from area to area. A further soft cost factor is the difficulty of the project, which depends on factors like geology, earthquake and flood area, and other exterior circumstances. Here you find a cumulative summary of my soft costs. The actual construction costs for my house are broken down into main categories for a better understanding and easy referencing to your own project.
Residential construction costs vary widely depending on the regulatory environment, size and type of building, owner involvement, and quality of material and craftmanship. Here is a rough cost calculator that lets you choose your building size and the level of expenses to get an idea of the final cost.