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AutoCAD is a popular drafting program by AutoDesk that costs $1,250 per year for a subscription. Engineers and architects use it to draw and edit 2D and 3D designs.

You can hire an architect, a draftsperson, or an engineer for drawings. In most residential settings, you’ll need a draftsperson or engineer. Engineering plans cost $300 to $2,500 per drawing or sheet for most residential projects. You can avoid delays by having an architect or licensed contractor review your blueprints before starting construction.

A draftsperson can usually design a house plan, and many do. In most residential spaces, they can create a complete set of blueprints without the aid or supervision of an architect. Check with your local building code agency to see if this is permitted in your area. 

Only hire drafters who have an education and experience in drafting. The American Design Drafting Association also offers optional certification programs that demonstrate competency in the field.

Blueprints are used for several purposes, including turning a design idea into a proposal, communicating ideas and concepts to clients, and convincing clients of a design's merits. They’re also used to enable a building contractor to construct the building, record completed work, and record a building that already exists.