If you are looking to create a 3D object in a scene from a floor plan it is really easy to do. Taking the time to carefully align a floor plan and start modeling from there will allow you to quickly and easily create the exact duplicate of the floor plan, while still ensuring that you are not over looking any important details, or missing out on something that is critical to the overall design of the building.
Creating 3D replicas of buildings using the floor plans makes it extremely easy, as well as highly accurate. Using the floor plan as a guide for the placement of the lines that you will use to create the model without much complication or issues is extremely helpful. Typically speaking using lines and other tools to follow the floor plan exactly will help you to design the replica perfectly, and also enable you to extrude the lines when appropriate, and then simply connect the lines where walls and other aspects of the house should meet.
Of course, a floor plan was never really intended for usage inside of a 3D graphics program, so it is very important that you learn and discover the actual ways that you can create the model quickly. Taking the time to draw out the major lines and walls for the exterior will be the very first process. By having this exterior shell created, you can then venture into the interior aspects of the model to create the inner walls, floors and other parts that will need to be created.
Ensuring that you also take the time to properly handle windows is important as well. The best method for handling windows, as well as doors is to simply make holes for them, and then seal the sides of them using the border tool. While this does take a bit more work than simply extruding the windows and doors, it will create a much more professional as well as polish look that can be very useful and helpful for creating the perfect look for the model.
Knowing that you are going to be working on a large project will mean that it is very important to ensure that you are using layers, selection sets and even naming objects appropriately so that they can be easily found. You do not want to be in the middle of a project that is a huge mess with objects all named object. Naming them properly so that the different portions of the scene are easily to locate, work with and manage will make it much easier to finish quickly as well.