Architectural models tend to be large, that is, contain a high number of faces and vertices. It is imperative that you develop good modeling habits to minimize the complexity of your models. Try to avoid becoming obsessive about a high degree of accuracy.
Most 3D Programs are not a CAD programs but a visualization tool. Learn the methods of working as accurately as possible-Units Setup, Grid Snap Settings, Snaps, for example-but keep in mind that when objects are seen in perspective size is relative to distance and camera angle.
Use “simulated” geometry when possible. Instead of creating a 3D chain link fence with all its faces and vertices, see if you can get away with an Opacity map material on a flat plane. Use Bump maps and Opacity maps to create the illusion of 3D geometry when none exists. Design your models with efficient presentations in mind. Do not model parts of the building that will never be seen in the final rendering.
Do not model details that are too small to show at the final rendered resolution. Instead of long, boring walkthrough animations, try to design a presentation that will be snappy and contain the highlights of the information you are conveying to the client. Once again, each face and each vertex in your model take computer resources to store and process. The more complex the model gets the less RAM memory is available for processing the rendering. If you reduce the face/vertex amount, you can often cut the rendering times enough to equal the speed of adding a new computer to the network.
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