Buying a pre-designed house plan online is common, but an architect is often needed to adapt that plan to your specific site’s topography and local codes. 2. Website & Software Site Plans

For major construction or when property boundaries are in dispute, you must hire a surveyor to visit the site and create a "certified" plan.

Agents use them to show buyers the layout, orientation, and outdoor features of a home. How to Buy a Construction Site Plan

In the digital world, "site plans" are subscriptions paid to platforms like Webflow or Wix to host and publish a website. What Is a Site Plan? 11 Things Site Plans Must Include

Used for adding pools, decks, or garages to existing properties.